Kenwood Ts 940s Mods

Incorporated into the board is the RS-232 level converter as well so you won't need the external, IF-232C, box. Kenwood Secret CB Index By Model Documentation Project CBTricks. 1 Disconnect the power and antenna. ACOM - 1000. This particular performance advantage has, for whatever. Love that K3. Mankhoff, N6BIZ Mike Hutchins, ZL1MH Dave Phillips, KB7JS Marcel De Vuyst, ON7DY Luis Velazquez, K4BTA. TS940 AVR Board. A list of ham radios supported by Ham Radio Deluxe Rig Control software | Yaesu, Icom, Kenwood, Elecraft, FlexRadio, Alinco, Ten-Tec, and more. This link is listed in our web site directory since Friday Sep 10 2010, and till today "Kenwood TS-940 Mods" has been followed for a total of 1375 times. Rationale The key to giving the TS-940S Hi-Fi AM is removing the low level AM modulation process from the IF strip where it is limited by the characteristics of the filters and balanced modulator. 8KHz) and make the rig sound "great", all the while keeping the audio narrow enough to be neighborly. VX-7R modification. Kenwood TS-790. ) ***** TS 940 SUPER MOD. Kenwood TS-940S CAT software. TS 570 ITA NEW! TS 570 TS 790 MODS NEW! TS 790 SERVICE NEW! TS 850 Service Manual NEW! TS 870S. User Manual. Does anyone know if this was a Kenwood mod? Is it desirable to replace both. Shipping to 98052: Items in search results. Kenwood LED Transceiver Mod - NEW LED w/ Harness - TS440 / R5000. EB5AGV's Workbench: Kenwood TS-940S repair. Intermittent control or display problems that are difficult to correct with the reset procedure may be caused by a faulty ROM socket. Mankhoff, N6BIZ Mike Hutchins, ZL1MH Dave Phillips, KB7JS Marcel De Vuyst, ON7DY Luis Velazquez, K4BTA. This is the 100 watt version with built in AC power supply. is down as the avr has been played about with at some time which has put about 40v in to the p. Input power is rated at 250 PEP on SSB, 200W DC on CW, 120W FM (optional) and 60W AM. EB5AGV's Kenwood TS-790 TS-790A TS-790E REPAIR page The very best Kenwood all-mode V/U/SHF rig. Does anyone know if this was a Kenwood mod? Is it desirable to replace both. KENWOOD TS-940 EXPANDED RF. This all mode transceiver covers 160 to 10 meters with a general coverage receiver. I am not a expert nor a certified Electrician. Mars Cap and freeband modification for the VX-7R transceiver. About Repairing a Kenwood TS-940S The resource is currently listed in dxzone. TS-940: VBT mod, amp keying problem. This particular performance advantage has, for whatever. The IF port #1 on the 940 goes into the RFL. Mani Page Page Up. Superb interference reduction circuits and high dynamic range receiver combine with superior transmitter design to get your signal through. KENWOOD TS-570S - $612. Incorporated into the board is the RS-232 level converter as well so you won't need the external, IF-232C, box. HTML TS-940 Control Program Size: 2622 Bytes; TW 4000. THAT WILL SLOW THE TUNING RATE TO 2 KHZ ON THE MAIN DIAL OF A KENWOOD TS-940. Marcel De Vuyst, ON7DY. Kenwood TL922 Amplifier As with any old gear and our modern Internet, there are many needless (and sometimes detrimental) mods published for the Kenwood TL922 and TL922A amplifier. A pan-adapter or bandscope expands the function of a receiver, essentially adding a picture of the band that is being monitored. TS-940: VBT mod, amp keying problem. Synthetic motor oil, one drop. HTML Mods For The Kenwood TS 930 Size: 8329 Bytes; TS 930. Digital Unit B is the board closest to the Front Panel. Input power is rated at 250 PEP on SSB, 200W DC on CW, 120W FM (optional) and 60W AM. KENWOOD TS-450S/690S MARS MODIFICATION (GENERAL TX) Kenwood TS 940 DOT on display Chasing down the rabbit hole Pt 1 - Duration: 19:08. The rig sounds "good". After doing the regular checks for signals and voltages on the PLL's I decided to start looking for other issues that can cause this problem. Modifications for the Kenwood TS-940 TS-940S LCD Clock Display Erratic Operation We have received a few reports concerning erratic operation of teh LCD clock display when the Main dial is rotated, or the VBT or SLOPE TUNE controls are operated. Over 1350 units completed and counting! Read. HTML Mod For Kenwood TW 4000 For CAP Size. KENWOOD TS-570S - $612. Kenwood TS-940S. - After using Kenwood and it's T-F Set button for years to operate split frequency, I don't like toggling between the xmit and receive frequencies. The Kenwood TS-430S all solid state transceiver supports SSB, CW, AM and has an option for FM. Japan TRIO-KENWOOD COMMUNICATIONS TRIO-KENWOOD COMMUNICATIONS, GmbH D 6374 Steinbach TS Industnestrasse BA West Cermenv TRIO-KENWOOD ELECTRONICS, N. Kenwood's long awaited flagship model is equipped with the latest technology that embodies an entirely new HF standard. If in doubt please enlist the help of a competent technician. KB2LJJ Radio Mods Database KB2LJJ Home Radio Mods Database and Manuals Modifications for the Kenwood TS-850 Expanded RF M/C 1 Disconnect the power and antenna. This page is dedicated to the Kenwood TS-790 VHF/UHF/SHF all-mode transceiver problems. The all solid-state 28 volt final amplifier runs 250 watts PEP input on USB, LSB, CW and FSK and 80 watts on AM mode. It's not clear if you've actually gotten your TS-940S to transmit on 11m. There are also a few chip caps changed for the monitor circuit. Secret CB Volume Twenty-Two Documentation Project CBTricks. What kind of Kenwood TS-50 mods can you do? There are instructions online for mods to brighten the LCD screen, increase the power level, increase transmission area, mod the CAT control, and more. I tune to a LSB signal on 7. 4E Woodcock Place. This rig has the optional auto antenna tuner, SSB filter, AM filter and 2 CW filters installed as shown in. Kenwood TS-940S (TS 940 S TS940S) Antenna Tuner Relays Occasionally during operation of the AT-940 a VSWR greater than 1. How to use the Kenwood TH-D7e, TM-D700 or TS-2000 with GP 1. I HAVE JUST INSTALLED IT IN MINE AND IT WORKS VERY WELL. Performance upgrades. um TRIO-KENWOOD (AUSTRALIA) PTY. Kenwood TS-940S CAT software. 3 Remove the top and bottom screws from each side of the front panel assembly. Kenwood TS-940S Transceivers: User Guide. The original format used from the initial production up until approx. Coverage includes the WARC bands. TS-940S Complete TX Coverage Modification: 22. pdf TS-950SDX_broch. 10 postage; 71 Sold. One 48 inch long cable with a MCX connector on one end and plug in pins on the other that connects the RTL SDR Receiver to the rig. kenwood mc-47 microphone. pdf TS-940S_user. I like looking at the band. A Kenwood TS-940S with a computer interface is required. pdf TS-940S_user_IT. TS 940 Mods A Brazilian ham found two factory assembly errors that, if corrected, may improve sensitivity and AGC performance of your TS-940S. Does anyone know if this was a Kenwood mod? Is it desirable to replace both. On the TS-440, the positive leads runs to the power switch, so you can verify it that way. pdf file describes how I used a modern TCXO that cost less than US$3 to improve the frequency stability of my TS-940S. Mankhoff, N6BIZ. Modifications for the Kenwood MC-85 Mod for MC-85 MIC and RC-1A phone. The company name was changed to Trio-Kenwood in the 1950's to better suite their international needs. This is the 100 watt version with built in AC power supply. At the moment it is been repaired, so I have to use my XYLs Yeasu FT101ZD. kenwood mc-45 microphone. We are already getting a lot of questions about the best "settings" for the onboard DSP microphone equalizer. TS 570 ITA NEW! TS 570 TS 790 MODS NEW! TS 790 SERVICE NEW! TS 850 Service Manual NEW! TS 870S. THERE IS A CHIP AVAILABLE FROM GIEHL ELECTRONICS IN CINCINNATI. The bonus is that the tuner acts as a preselection for the RX. What kind of Kenwood TS-50 mods can you do? There are instructions online for mods to brighten the LCD screen, increase the power level, increase transmission area, mod the CAT control, and more. 37v not working (1. The TS-990S comes equipped with dual receivers for simultaneous reception on different bands, it also features narrow-band roofing filters on the main receiver in a full down-conversion configuration. A Kenwood TS-940S with a computer interface is required. User Manual. Williams, WA61VC, "Trio-Kenwood Communications TS-940S HF Transceiver", Product Review, QST, Feb 1986, pp 47-49. It covers 160 through 10 meters, and has been cap modified. (photo only) kenwood mc-60 microphone. Young, W3AFC and others. HTML TS-940 Control Program File Size: 2622 Bytes; TW 4000. that I will be working on, and then I plan to redo the graphics and replace the faces with some better pics. Absolutely beautiful rig, looks almost as good as it did the day it came out of the box. The TS-930SE's serial port connects directly to your computer, without the need for a level converter or added chips inside the radio; already, this threatens to severely impact the market for TS-940s and TS-850s, which need one or both. Kenwood , Ten Tec, Yaesu, Icom , Ameritron, Alpha, THP, Mirage, and just about all other brands. TM-221A/321A/421A/521A - With the power off press the VFO/M, & M. UPDATE: 12/7/2017 I have began working on this project once again, there are a few minor bugs etc. I have a Kenwood TS-940S that I am trying to identify. The TS-940S is supplied to operate from a 120V AC, 220V AC or 240V AC 50/60 1-IZ power source capable of supplying 510 watts or more. Kenwood presumably did not anticipate the need for the battery to be replaced before the rig expired, but we have other plans. Check back often as I add more information. Professional Repairs/Restoration specializing on the Kenwood TS-940, TS-930 radios. Hallicrafters HT-37 Audio Mods by Jeff, W2NBC. I HAVE JUST INSTALLED IT IN MINE AND IT WORKS VERY WELL. So, I swapped for a Kenwood TS-940S/AT that looks perfect. kenwood mc-45 microphone. Successor series have been the TS-930, TS-940, and TS-950. This is Kenwood's description of it. I am not a expert nor a certified Electrician. It is possible to save yourself a few dollars and lose nothing in quality by buying the parts to upgrade your Kenwood radio for computer control. KMC-35, Standard Dynamic Mobile Microphone (8-pin mod plug). There are also a few chip caps changed for the monitor circuit. TS-130: 12. One of the minor draw backs to the TS-850 as a CW contest machine is the inability to use the internal keyer in conjunction with an external keying circuit such as a personal computer or auxiliary memory keyer. I am the proud owner of an IC-746, Love the radio has been great - but it has developed some usual IC-746 problems, burnt out backlight, loose VFO Knob, low power on 2M SSB. Mani Page Page Up. This will increase high frequency response on SSB/CW. Be careful no to break the speaker wires. 82v ic8>pin2=1. 73's-----Earlier 5-star review posted by KJ4KBC on 2013-06-25 Kenwood made a lot of TS-940's. My station is exclusively Kenwood (TS-940s, TL-922, TR-2400, TR-7950, MC- 85, and the PC-1A phone patch) and I'm very content of having the honor to belong to the Kenwood family. Does anyone know if this was a Kenwood mod? Is it desirable to replace both. I intend to get it repaired, but our local repair shop is very busy, and it could be a while. 7: 02/18/2017 Contributors (To date, in order of appearance) Gary J. kenwood mc-43 microphone. Kenwood TS-950S (TS 950 S TS950S) Final bias circuit change: It is possible to exceed the maximum Vcbo rating of the MRF429 transistors used in the TS-950S/SD if the unit is operated at excessive transmit power levels (greater then the normal factory output power setting). little or no audio transmitted. HTML TS 940S Erratic Display Or Control Fix File Size: 5117 Bytes; TS 940 IBM. Modifications for Yaesu and Kenwood tranceivers, receiver. FA: TS-940-AT SP-940 MC-60. Date Published : July 1985 Number of Pages: 72 Kenwood TS-940S Complete TX Coverage Modification: 11. Secret CB Volume Twenty-Two Documentation Project CBTricks. now TS-590 since a couple of months Both radios have excellent receivers. This rig has the optional auto antenna tuner, SSB filter, AM filter and 2 CW filters installed as shown in. Check back often as I add more information. It is in excellent condition both cosmetically and functionality. I have already replaced the power supply transistors. I finally came by to read your blog on your Kenwood TS-940. Receiver works very well transmit section has not been tested but worked when last used. A Kenwood TS-940S with a computer interface is required. One 48 inch long cable with a MCX connector on one end and plug in pins on the other that connects the RTL SDR Receiver to the rig. 29 postage; 6 Watching. HTML Mod For Kenwood TW 4000 For CAP Size. DESBLOQUEIO MARS MOD. This filter has a 6dB B/W of 2. DESBLOQUEIO MARS MOD. The symptoms, in my case, were a dead radio. HTML TW 4000 Modification And Notes File Size: 1403 Bytes; TW 4000. FA: TS-940-AT SP-940 MC-60. 3 Remove the top and bottom screws from each side of the front panel assembly. 9 amps on the TS-440. Kenwood Ts 940s Service Manual Pdf modifications for the kenwood from kenwood ts 940s service manual pdf , source:pi4oss. PIEXX TS-930SE Digital Board for the Kenwood TS-930. Kenwood amateur radio receivers, scanners, transmitters & transceivers Includes only equipment in 100% working condition, missing no original accessories, and including no mods or extra accessories unless noted. Got a TS-940 with issues i can not resolve At first is was only doing 50 watts and i had it warming up and it died. The item "KENWOOD TS-50 HF TRANSCEIVER" is in sale since Tuesday, March 17, 2020. You Will Receive: One Newsky USB RTL SDR Digital Tuner/Receiver (Dongle). TS 430 ENG NEW! TS 430 ITA. Kenwood TS-850s Noise Blanker Mod Posted on 4th July 2017 30th March 2020 by G7SYW Most owners of this radio would agree that the Kenwood TS-850 is a very good radio except for the noise blanker. They both have a communication type dynamic unidirectional moving coil type microphone element. 4SALE: TS-940,SP-940,SM-220, IF-232c. What I have going on is this. Executive Summary of AGC Mod Independent Feedback on how Receiver Improves KENWOOD TS-940S RECIPROCAL MIXING NOISE In early March I [Rich Maher] talked to someone at International Radio regarding the reciprocal mixing ===== KENWOOD TS-940 PAGE ===== KENWOOD TS-940. ts-940 super mod. Kenwood Diagrams, Schematics and Service Manuals - download for free! Including: kenwood at 130 schematic, kenwood basic m1a power amplifier service manual, kenwood connectors pinouts, kenwood dsp100, kenwood ka 801 integrated amplifier service manual (incomplete), kenwoodkd1 new , kenwood kr 77 svc manual, kenwood kw 55u am fm stereo receiver new , kenwood kx1030 tape service manual, kenwood. The Kenwood TS-430S all solid state transceiver supports SSB, CW, AM and has an option for FM. pdf TS-950SDX_broch. Kenwood TS-950SD / SDX Series (Extensive TX and RX Mods by WZ5Q) Kenwood TS-870 ACC2 Audio Input Modification (C131 Mod) Kenwood TS-850S / DSP-100 (Transmitter and Receiver Mods by W5JAY & W9AC) Yaesu FT-1000MP Series Mods - (Transmit and Receiver Mods) Extensive mods by W5CUL and VE7RF (PDF creation and download available courtesy W5CUL and. The specific ESSB modification that I attribute to the high quality AM performance is the direct application of audio to the. Kenwood TS-950S (TS 950 S TS950S) Final bias circuit change: It is possible to exceed the maximum Vcbo rating of the MRF429 transistors used in the TS-950S/SD if the unit is operated at excessive transmit power levels (greater then the normal factory output power setting). , the switch is set for 120 VAC with a 6-ampere fuse installed. I have a Kenwood TS-940S that I am trying to identify. As I use my tube/BA gear for all ham activity, the TS-940S and attachments are dedicated to MARS and CAP communications. This page is dedicated to the Kenwood TS-790 VHF/UHF/SHF all-mode transceiver problems. PARTS NEEDED: 1/4w resistors, 4. Dave Phillips, KB7JS. Kenwood's long awaited flagship model is equipped with the latest technology that embodies an entirely new HF standard. more Format Format. 19 December 2011. Kenwood TS-830S Operating Manual. Kenwood TS-940S or SAT, SP-940, SM-220 & MC-60 Combo Ham Radio Dust Cover Set. All references below are to the IF board component designations. I still don't know how to work it, but it does look cool and has lots of bragging right. The mods here are for the AF unit. I have received several positive comments on the quality of my AM transmissions. On the TS-440, the positive leads runs to the power switch, so you can verify it that way. Locate Digital Unit B. He said that someone at Kenwood told him that it was the only way to reduce the level. This is just a report on how I fixed my TS-440 with info directly from the Yahoo Group KENWOOD TS-440S. TS-140S TS-680S : user manual. The TS-940S is supplied to operate from a 120V AC, 220V AC or 240V AC 50/60 1-IZ power source capable of supplying 510 watts or more. I finally came by to read your blog on your Kenwood TS-940. See more ideas about Kenwood, Ham radio, Amateur radio. THERE IS A CHIP AVAILABLE FROM GIEHL ELECTRONICS IN CINCINNATI. Discussion in 'General Ham Radio Discussion' started by Robalo, Jan 1, kenwood ts-940s serie708xxxx pll 50-2020-00 board ic19>pin2=4. TYLKO CHODZI O TO ŻE NIGDZIE NIE MOGE ZNALEŚC W INTERNECIE JAKA KENWOOD TS 140S MA MINIMALNOM PWR BO O MAX WSZEDZIE JEST NAPISANE 100W warunkiem podłonczenie wzmacniacza jest ze radio ma nie przekraczac pwr 10w. Mar 26, 2018 - Explore jamesaleemsi's board "TS 590S", followed by 162 people on Pinterest. This link is listed in our web site directory since Friday Sep 10 2010, and till today "Kenwood TS-940 Mods" has been followed for a total of 1375 times. In 1985 Kenwood, a Japanese company, began to produce the TS-940S HF Transceiver and discontinued it in the 90s. The company name was changed to Trio-Kenwood in the 1950's to better suite their international needs. TS440S Repair FAQ I take no responsibility for any damage you cause to your TS-440S. Not only does a good radio feel smooth to the ears, but the eyes get a treat with a good radio with a pan-adapter. I have not been able to find details of how to remove the module to work on it. Requests: 1. A Kenwood TS-940S with a computer interface is required. What a wonderful write up and so much useful information. I began to wonder last year why its Rx was weaker than the other Kenwood HF rigs or Icom. Kenwood TS-830 Instruction Manual. My homebrew projects. Kenwood TS-830S Alignment Manual. ON6MU: Hamradio equipment and mods. Get an idea of the used market prices by looking at these Kenwood TS-940SAT classified on Universal Radio Inc. Young, W3AFC Rev. Just a average Ham like you who likes to learn. Kenwood TS-940S Mod TS940s erratic display fix. kenwood mc-44 microphone. Kenwood TS-850s Noise Blanker Mod Posted on 4th July 2017 30th March 2020 by G7SYW Most owners of this radio would agree that the Kenwood TS-850 is a very good radio except for the noise blanker. After doing the regular checks for signals and voltages on the PLL's I decided to start looking for other issues that can cause this problem. TS-120S TS-120V: user manual (version V) service manual (19. All KENWOOD Mods From Mods Dk in ONE File - Free ebook download as PDF File (. It covers 160 through 10 meters, and has been cap modified. Superior to any MP or recent ICOM rigs, in my opinion. The service manual does not show an exploded view of the PA module. Modifications for the Kenwood TS-940 19-07-1998 TS-940S LCD Clock Display Erratic Operation We have received a few reports concerning erratic operation of teh LCD clock display when the Main dial is rotated, or the VBT or SLOPE TUNE controls are operated. I had struggled to achieve a balanced TX audio frequency response (that I liked) due to the limitations of the TS940 and my higher pitched and somewhat nasally natural voice. Naturally, you perform this mod (and any mod) at your own risk. It also comes with power cord and original box and manual. 10 postage; 71 Sold. Yaesu introduced the FT-101E, or "Economy" model, so Kenwood had to counter with the TS-520SE, "Economy" model. TS-940S_Technical_information. DB-9(m) to Kenwood round 8 pn mic and external speaker. is down as the avr has been played about with at some time which has put about 40v in to the p. TRIO-KENWOOD CORPORATION 1 7-5. - After using Kenwood and it's T-F Set button for years to operate split frequency, I don't like toggling between the xmit and receive frequencies. Next 2 digits are month code starting with April (beginning of Japanese tax year) as 01. Both microphones also have a PTT lock switch on the microphone. One of the biggest problems with the TS-940 has been the power supply. HTML TS-940 Control Program File Size: 2622 Bytes; TW 4000. Help with TS-940 Problem. pdf file describes how I used a modern TCXO that cost less than US$3 to improve the frequency stability of my TS-940S. Each incorporates on the base a piano key style of switches for PTT (push to talk) as well as a lock feature for extended transmissions. TS-940S Kenwood: TS-950S Kenwood: TS-950SDX Kenwood: TS-B2000 Kenwood: TW-4000 Kenwood: TW-4100A Tigertronics SignaLink™ Plug and Play Jumper Modules plug into the SignLink™ in place of the jumper wires that normally would be used. Short collection of modifications for the Kenwood TS-850, collected from CQ Contest email reflector. TS-430S Modifications (Correction in Volume 25 Page 16) 18. Kenwood TS-440 Mods - by Dave, W2VW. He also services some other early solid state Kenwood transceivers and amateur equipment for which documentation is available. 1 MHz) Phase Locked Loop (PLL) Circuit This is a digital Variable Frequency Oscillator (VFO) covering 45. Kenwood TS-770 (TS 770 TS770) Modification for 9600 baud (G3RUH) If you remove the small plate on the back of the unit you will find an easy way to mount an 9 pin sub d connector (at least on the "E" version) which has enough room for rx, tx and ptt. 50 ea TS-2000 Parts 2SC1972 Transistors MP $20. They both have a communication type dynamic unidirectional moving coil type microphone element. TS-850 as secondary rig. The debut of the TS-900 in 1973 established the magnificent tradition of KENWOOD flagship HF transceivers, designed for DX'ers with exacting requirements for long-range high-performance Amateur Radio communications. Twitter Facebook WhatsApp Google+ LinkedIn Pin It. I have a very nice Kenwood TS-570S for sale that covers all the HF bands and 6 meters. This appears as if you had pressed the SET, SCROLL, or GRAPH switches. With the so-I installed, overall frequency stability is upgraded to a level approximating professional standards. pdf TS-940S_serv. com in a single category. After finding out which is positive, place some heat shrink on both of the power leads and solder the positive lead to the anode (the one with the resistor) and the negative lead to the cathode (the one without the resistor). I even find myself passing my 990 up not because it's not a fine radio itself with many bells and whistles, but the 940 audio and Transmit quality using an MC-60, is just hard to beat. pdf file describes how I used a modern TCXO that cost less than US$3 to improve the frequency stability of my TS-940S. Hi, My 940 was working good for while, but now the S-Meter lights and the VFO display have started to flicker. ON6MU: Hamradio equipment and mods. TRIO-KENWOOD CORPORATION 1 7-5. Modifications for the KENWOOD created 28-03-2002 from www. Hi all, The final transistors (MRF422) in my TS-930S need to be replaced. Input power is rated at 250 PEP on SSB, 200W DC on CW, 120W FM (optional) and 60W AM. Kenwood amateur radio receivers, scanners, transmitters & transceivers Includes only equipment in 100% working condition, missing no original accessories, and including no mods or extra accessories unless noted. VX-7R modification. Kenwood Micro-Processor Reset Procedures 1. 00 to all parts of the continental USA, no sales to outside of the USA. All KENWOOD Mods From Mods Dk in ONE File - Free ebook download as PDF File (. The Kenwood MC-50 and MC-60A has been a popular desk microphone among Kenwood owners for many years. pdf TS-950SDX_serv. How to use the Kenwood TH-D7e, TM-D700 or TS-2000 with GP 1. View and Download Kenwood TS-930S service manual online. TS-850 as secondary rig. The crammed assembly makes it difficult. It is, however, simple and reversible so long as you place the jumper in a safe place should you want to return the rig to its original state. The TS-590S does have a very sophisticated software-programmable equalizer system, but that's not required in order. KENWOOD TS-940S/AT. I even find myself passing my 990 up not because it's not a fine radio itself with many bells and whistles, but the 940 audio and Transmit quality using an MC-60, is just hard to beat. TS-140 MARS Modification: 29. the complete radio was i repeat was for sale these listings are for individual items or boards only. He bought a second-hand rig in the early 90s, previously having used a TS-440SAT for most of his HF operating. Kenwood TL922 Amplifier As with any old gear and our modern Internet, there are many needless (and sometimes detrimental) mods published for the Kenwood TL922 and TL922A amplifier. PIEXX TS-930SE Digital Board for the Kenwood TS-930. 00 to all parts of the continental USA, no sales to outside of the USA. The all solid-state 28 volt final amplifier runs 250 watts PEP input on USB, LSB, CW and FSK and 80 watts on AM mode. in Los Angeles, California. mods, kenwood ts 570sg mods, kenwood ts 570d for sale. MFJ-940 suffers from a minor design error, which can be easily rectified. TS-440 RX Audio Mods Here's some easy modifications to improve the rx audio fidelity of Kenwood TS-440's. KENWOOD TS-940S/AT PLL Wax Woes: Almost everyone who owns a Kenwood TS-940, TS-440 and a few select other transceivers or even the R-5000 receiver will have heard, or experienced, the dreaded PLL wax potting curse. POZDRAWIAM See More. 54 clearly states: D135 is for MARS. THERE IS A CHIP AVAILABLE FROM GIEHL ELECTRONICS IN CINCINNATI. TS-940S Serial Number Help (too old to reply) Tony Page 2007-08-05 04:47:49 UTC. Kenwood TS 940S ham radio transceiver - $700 (Goodland) I have a Kenwood TS 940S ham radio transceiver for sale or trade. The numerical result obtained by dividing the -60 dB bandwidth by the -6 dB bandwidth is known as the filter's shape factor, the smaller the number, the better the shape factor. Kenwood TS-830 Alignment Manual. This appears as if you had pressed the SET, SCROLL, or GRAPH switches. The company name was changed to Trio-Kenwood in the 1950's to better suite their international needs. 2 Remove the 16 screws top and bottom covers from the radio. com in a single category. Ts-430s Service Manual. KENWOOD TS-450S/690S MARS MODIFICATION (GENERAL TX) Kenwood TS 940 DOT on display Chasing down the rabbit hole Pt 1 - Duration: 19:08. It is possible to save yourself a few dollars and lose nothing in quality by buying the parts to upgrade your Kenwood radio for computer control. Kenwood TS-830S Service Manual. TS-120S TS-120V: user manual (version V) service manual (19. Kenwood's exciting new TS-590S transceiver promises to be popular among active operators throughout the world. Bands covered are 160M, 80M, 60M, 40M, 30M, 20M, 17M, 15M, 12M, 10M and 6M. Provided by PY6AFL F0ELS Manual_Exchange. Top-rated seller. From CT1APV 2. Kenwood Ts 940s Service Manual Pdf modifications for the kenwood from kenwood ts 940s service manual pdf , source:pi4oss. Be careful no to break the speaker wires. Pure tube radios could use even more. 0 MB) block diagram. I pulled the top cover and with a Ray-Tek gun discovered a filter capacitor on the AVR board that was starting to short. The supply fits perfectly into the TS-940S case with plenty of room for cooling. Decrease C51 to. TS-940S transceiver pdf manual download. The '940 was a capable, fully featured rig and it made a lasting. Kenwood TS-950SD / SDX Series (Extensive TX and RX Mods by WZ5Q) Kenwood TS-870 ACC2 Audio Input Modification (C131 Mod) Kenwood TS-850S / DSP-100 (Transmitter and Receiver Mods by W5JAY & W9AC) Yaesu FT-1000MP Series Mods - (Transmit and Receiver Mods) Extensive mods by W5CUL and VE7RF (PDF creation and download available courtesy W5CUL and. The other grey unit with the big knobs and the big meters is a Kenwood TL-922A linear amplifier. more Format Format. MFJ-940 modification. Kenwood TS-440S (TS 440 S TS440S) Computer Interface Instruction : These Instructions are TS-440 specific, but the basics also apply to the TS-940, TS-811 and TS-711. There are also a few chip caps changed for the monitor circuit. There are allot of electrolytic and chip capacitors that need to be changed on this board. What I have going on is this. The numerical result obtained by dividing the -60 dB bandwidth by the -6 dB bandwidth is known as the filter's shape factor, the smaller the number, the better the shape factor. Hallicrafters HT-37 Audio Mods by Jeff, W2NBC. - The receiver 3rd order IMD does not seem to be as good as my TS-940S. DTMF keypad RJ45 microphone for Kenwood TM-D700 TM-D710 TM-G707 etc. I began to wonder last year why its Rx was weaker than the other Kenwood HF rigs or Icom. I having an odd issue with my RTL and my TS-940. I have received several positive comments on the quality of my AM transmissions. If not, the modification for it (and some other good info) can be found here: KB2LJJ Radio Mods Database and Manuals Long story short, it seems you need to cut/remove D130 on the digital unit, which is behind the face of the rig. Ham Radio modifications imporvements or fiexs that can extent. Kenwood TS-950S (TS 950 S TS950S) Final bias circuit change: It is possible to exceed the maximum Vcbo rating of the MRF429 transistors used in the TS-950S/SD if the unit is operated at excessive transmit power levels (greater then the normal factory output power setting). What a wonderful write up and so much useful information. The crammed assembly makes it difficult. Make Offer - Kenwood Filter Bypass Circuit Board P/N J25-3113-04 TS-930S Ham Radio TS930S KENWOOD 8 Band Microphone Sound EQ Compressor TS-140 TS-430 TS-440 TS-930 TS-940 $129. KB2LJJ Radio Mods Database and Manuals Page 5 of 10. The TS-940S is supplied to operate from a 120V AC, 220V AC or 240V AC 50/60 1-IZ power source capable of supplying 510 watts or more. I've done this mod to my TS-590S and it works just fine. Young, W3AFC and others. The all solid-state 28 volt final amplifier runs 250 watts PEP input on USB, LSB, CW and FSK and 80 watts on AM mode. Help with TS-940 Problem. Leuvensesteenweç 504 B 930 ? aventem gelg. Hi all, The final transistors (MRF422) in my TS-930S need to be replaced. HTML TS 930 Repair Notes Long Size: 8329 Bytes; TS 940. pdf file describes how I used a modern TCXO that cost less than US$3 to improve the frequency stability of my TS-940S. Is this number right? Early production or Prototype?. I assume you have excellent soldering skills and a good DMM. Kenwood TS-790. kenwood mc-45 microphone. I intend to get it repaired, but our local repair shop is very busy, and it could be a while. in Los Angeles, California. 21 Posts Related to Kenwood Ts 940s Service Manual Pdf. Provided by PY6AFL F0ELS Manual_Exchange. i was informed by the grandson of original owner it was his radio from newbut no way to prove this except for very good condition of both radio's i receivedwill also be selling the yaesu 901dmi listed this transceiver at a. I tune to a LSB signal on 7. Kenwood presumably did not anticipate the need for the battery to be replaced before the rig expired, but we have other plans. Kenwood TS-940S. Piexx Company TS-940 Interface Board - The TS940 Interface fits inside of the TS-940, in place of the original IF-10B board. PLL Wax Woes. Executive Summary of AGC Mod Independent Feedback on how Receiver Improves KENWOOD TS-940S RECIPROCAL MIXING NOISE In early March I [Rich Maher] talked to someone at International Radio regarding the reciprocal mixing ===== KENWOOD TS-940 PAGE ===== KENWOOD TS-940. TS-130S: user manual (version SE) service manual (11. If first digit is 0 add 10 to 1998. 7 khz SSB Filter 2. I looking at my radio, there are two batteries, each diode isolated, in parallel. Mods for Kenwood TS-440S (TS 440 S TS440S) : Kenwood TS-440S (TS 440 S TS440S) IF-10 (RS-232) interface Kenwood TS-440S (TS 440 S TS440S) Displays dots on certain bands Kenwood TS-940S (TS 940 S TS940S) service manual and specs Kenwood TS-950S (TS 950 S TS950S) service manual and specs. HTML TS 940S Erratic Display Or Control Fix File Size: 5117 Bytes; TS 940 IBM. Johnson Valiant Mods by Tim, WA1HLR. com: Website devoted to the Yaesu FL-7000 Linear Amplifier! I have been rebuilding, repairing, and applying modifications to the Yaesu FL-7000 amplifier for over 30 years. TS-140S 11 Meter Modification: 29. HTML TS 930 Repair Notes Long Size: 8329 Bytes; TS 940. HTML TS-940 Control Program File Size: 2622 Bytes; TW 4000. I have a very nice Kenwood TS-570S for sale that covers all the HF bands and 6 meters. Leuvensesteenweç 504 B 930 ? aventem gelg. Menu #34 should be set at 4-5 and can be increased to provide more Receive Audio if needed. You can either have a single 500, or a 250 cascaded with a 500. M odify your Kenwood TS-940S for Hi-Fi AM? You bet! Just follow the step-by-step instructions below. Refine your search for kenwood ts 440s. I recently purchased a Kenwood TS-940S/AT (serial number over 20 mil) - I know that the user manual states 100 % duty cycle at 100 % power - but they do put a caveat in there - something like if transmit times are going to exceed 1 hour the power output should be reduced. Kenwood TS-830 Alignment Manual. Comes with power cord, no microphone or power supply. Remove case screws and case. KMC-18 Service Manual TS 140 MOD. Kenwood TS-950S (TS 950 S TS950S) Final bias circuit change: It is possible to exceed the maximum Vcbo rating of the MRF429 transistors used in the TS-950S/SD if the unit is operated at excessive transmit power levels (greater then the normal factory output power setting). Date Published : July 1985 Number of Pages: 72 Kenwood TS-940S Complete TX Coverage Modification: 11. Kenwood TS-940S/AT Transceiver for auction. This is the BUFF of them all. Ts-430s Service Manual. As I use my tube/BA gear for all ham activity, the TS-940S and attachments are dedicated to MARS and CAP communications. Superior to any MP or recent ICOM rigs, in my opinion. Kenwood Micro-Processor Reset Procedures 1. I recently purchased a Kenwood TS-940S/AT (serial number over 20 mil) - I know that the user manual states 100 % duty cycle at 100 % power - but they do put a caveat in there - something like if transmit times are going to exceed 1 hour the power output should be reduced. Apparently a design change to the bias network in the '940 production run allowed the radio to use the higher gain drivers. 39 or later, and Chris. For units shipped to the U. Got a TS-940 with issues i can not resolve At first is was only doing 50 watts and i had it warming up and it died. About Kenwood TS-940 Mods The resource is currently listed in dxzone. 19 December 2011. TS-140S TS-680S : user manual. that I will be working on, and then I plan to redo the graphics and replace the faces with some better pics. Kenwood TS-830 Alignment Manual. com Model: TS-120S: 12. Kenwood TS-850 and TS-850S links category is a curation of 26 web resources on , Modifications for the Kenwood TS-850, Simplified Kenwood TS-850 AM Mod, Kenwood/Trio - TS-850S. 73, Clif Holland KA5IPF Millie Holland W5AUX Current Items For Sale Parts S40-2418-05 Power Switch for TS930/940 $7. Mods for Kenwood TS-940S (TS 940 S TS940S) : Kenwood TS-940S (TS 940 S TS940S) Factory Assembly Mistakes Kenwood TS-950SDX (TS 950 SDX TS950SDX) service manual and specs Kenwood TS-2000 (TS 2000 TS2000 TS-2000X TS-B2000) service manual and specs. I finally came by to read your blog on your Kenwood TS-940. AT-940 HS-4 HS-5 HS-6 HS-7 MC-42S MC-60A MC-80 MC-85 PC-1A SM-220 SO-1 SP-940 VS-1 YG-455C-1 YG-455CN-1 YK-88A-1 YK-88C-1: Internal automatic antenna tuner Communications headphones Light-weight open air communications headphones Deluxe communications headphones Micro headphones Hand microphone Desk microphone Desk microphone Desk microphone. Discussion in 'General Ham Radio Discussion' started by Robalo, Jan 1, kenwood ts-940s serie708xxxx pll 50-2020-00 board ic19>pin2=4. Locate Digital Unit B. For units shipped to European, Central, South Ameri- can, and African countries, the switch is set for. A Kenwood TS-940S with a computer interface is required. Provided by PY6AFL F0ELS Manual_Exchange. 8KHz) and make the rig sound "great", all the while keeping the audio narrow enough to be neighborly. The main category is Kenwood TS-940S that is about Kenwood TS 940. The latest music videos, short movies, tv shows, funny and extreme videos. HTML Mods For The Kenwood TS 930 File Size: 8329 Bytes; TS 930. As I use my tube/BA gear for all ham activity, the TS-940S and attachments are dedicated to MARS and CAP communications. It has a REALLY early serial number 0050364. Intermittent control or display problems that are difficult to correct with the reset procedure may be caused by a faulty ROM socket. The Kenwood TS-930S is a superlative, high performance, all solid-state, HF transceiver capable of operation in SSB, CW, FSK and AM modes. Successor series have been the TS-930, TS-940, and TS-950. momentarily displays then. Mankhoff, N6BIZ Mike Hutchins, ZL1MH Dave Phillips, KB7JS Marcel De Vuyst, ON7DY Luis Velazquez, K4BTA. The ESSB modifications I have performed on the TS-940 have provided a very strong foundation for AM operation. W6NL Mods for the TS-930 Introduction The Kenwood TS-930, while many years out of production and lacking many of the technology developments of the past twenty years, continues to be an excellent HF radio with a unique ability to hear multiple signals in a pileup. I guess Kenwood realized that they forgot to allow an operator to do what the. Mar 26, 2018 - Explore jamesaleemsi's board "TS 590S", followed by 162 people on Pinterest. KENWOOD TS-940S MODS. A list of ham radios supported by Ham Radio Deluxe Rig Control software | Yaesu, Icom, Kenwood, Elecraft, FlexRadio, Alinco, Ten-Tec, and more. Kenwood TS-940 Instruction Manual. pdf TS-950SDX. One morning he turned it on and it was just dead. What kind of Kenwood TS-50 mods can you do? There are instructions online for mods to brighten the LCD screen, increase the power level, increase transmission area, mod the CAT control, and more. Using HDSDR I see signals in the waterfall good so far. The Kenwood TS-430S all solid state transceiver supports SSB, CW, AM and has an option for FM. It has a REALLY early serial number 0050364. 46 postage +S$ 18. User Manual. Kenwood TS-900 Operators Manual. EB5AGV's Kenwood TS-790 TS-790A TS-790E REPAIR page The very best Kenwood all-mode V/U/SHF rig. little or no audio transmitted. PE2BZ Datasheet Archive, send your comments to [email protected] It comes with the matching SP23 speaker, hand mic. KMC-35, Standard Dynamic Mobile Microphone (8-pin mod plug). 1 Disconnect the power and antenna. in Los Angeles, California. TS-140 MARS Modification: 29. Is this number right? Early production or Prototype?. User Manual. Receiver works very well transmit section has not been tested but worked when last used. TS-940S Complete TX Coverage Modification: 22. We are already getting a lot of questions about the best "settings" for the onboard DSP microphone equalizer. Short collection of modifications for the Kenwood TS-850, collected from CQ Contest email reflector. So I acquired a TS-940 not too long ago, and after modding the power supply to keep it from killing itself I came upon some mods about flipping a couple of FETs to increase the sensitivity (https://ww. Kenwood Ts 520 Service Manual Pdf. Mods for Kenwood TS-440S (TS 440 S TS440S) : Kenwood TS-440S (TS 440 S TS440S) IF-10 (RS-232) interface Kenwood TS-440S (TS 440 S TS440S) Displays dots on certain bands Kenwood TS-940S (TS 940 S TS940S) service manual and specs Kenwood TS-950S (TS 950 S TS950S) service manual and specs. kenwood ts-940sat ts-940s main transformer transformer only - $88. Professional Repairs/Restoration specializing on the Kenwood TS-940, TS-930 radios. The results are summarised in this pdf document. Kenwood , Ten Tec, Yaesu, Icom , Ameritron, Alpha, THP, Mirage, and just about all other brands. PLL Wax Woes. Love that K3. 9 Giehl chip available for the Kenwood TS-940S. The final Kenwood hybrid (TS-520) used 5 amps when receiving, compared to 1. more Format 42 results for kenwood ts-930 Save this search. TS 140 Schema. Kenwood TS-950S (TS 950 S TS950S) Final bias circuit change: It is possible to exceed the maximum Vcbo rating of the MRF429 transistors used in the TS-950S/SD if the unit is operated at excessive transmit power levels (greater then the normal factory output power setting). Created: 06 Jul 2016 Kenwood TS-940 Subject: Loss of Xmit mode on TS-940S Troubleshooting a loss of SSB xmit on my TS-940S/AT (AM & CW had full power), I tried cleaning a couple of the mini-molex connectors, and found several that made a difference, SO - I cleaned them Click here to view the article. that I will be working on, and then I plan to redo the graphics and replace the faces with some better pics. The main category is Kenwood TS-940S that is about Kenwood TS 940. dk (AT-50) AT-50 Blows ACCY fuse in TS-50S English language (AT-50) AT-50 Blows ACCY fuse in TS-50S (Part 2) English language (AT-50) AT-50 Mechanical stability English language (DG-1) Service Note on DG-1 English language (DG-1) DG-1 Standard service procedure English language (DG-5) Repairing DG-5 English language. Refine your search for kenwood ts 440s. About Repairing a Kenwood TS-940S The resource is currently listed in dxzone. The TS-450, which replaced the TS-440, has a PWR Control that does reduce the power out. From CT1APV 2. It is, however, simple and reversible so long as you place the jumper in a safe place should you want to return the rig to its original state. I was gifted an older Kenwood TS-940S by an Elmer. It also comes with power cord and original box and manual. As far as setup everything is working good well mostly. Help with TS-940 Problem. TS 570 ITA NEW! TS 570 TS 790 MODS NEW! TS 790 SERVICE NEW! TS 850 Service Manual NEW! TS 870S. The TS-930SE's serial port connects directly to your computer, without the need for a level converter or added chips inside the radio; already, this threatens to severely impact the market for TS-940s and TS-850s, which need one or both. This is the BUFF of them all. Kenwood presumably did not anticipate the need for the battery to be replaced before the rig expired, but we have other plans. PIEXX TS-930SE Digital Board for the Kenwood TS-930. What I have going on is this. Is this number right? Early production or Prototype?. TS-440 RX Audio Mods Here's some easy modifications to improve the rx audio fidelity of Kenwood TS-440's. Kenwood TS-830S Operating Manual. TS-940 users need to use the jumper settings shown in figure 1, except for the PTT jumper. The board is shipped with a 5' ribbon cable that connects to the new board,on one. TS-940S General Xmit: 29. For units shipped to the U. The Kenwood TS-940S is a serious radio for the serious operator. This may be especially noticeable when switching BANDS, or if TUNINS is performed too frequently. Pure tube radios could use even more. There are also a few chip caps changed for the monitor circuit. TS-940S Kenwood: TS-950S Kenwood: TS-950SDX Kenwood: TS-B2000 Kenwood: TW-4000 Kenwood: TW-4100A Tigertronics SignaLink™ Plug and Play Jumper Modules plug into the SignLink™ in place of the jumper wires that normally would be used. You Will Receive: One Newsky USB RTL SDR Digital Tuner/Receiver (Dongle). pdf TS-940S_user_IT. Mar 26, 2018 - Explore jamesaleemsi's board "TS 590S", followed by 162 people on Pinterest. FS: Classic TS-940 w/ SP-940. AT-940 HS-4 HS-5 HS-6 HS-7 MC-42S MC-60A MC-80 MC-85 PC-1A SM-220 SO-1 SP-940 VS-1 YG-455C-1 YG-455CN-1 YK-88A-1 YK-88C-1: Internal automatic antenna tuner Communications headphones Light-weight open air communications headphones Deluxe communications headphones Micro headphones Hand microphone Desk microphone Desk microphone Desk microphone. Kenwood ts-940s transceivers: user guide (62 pages) Transceiver Kenwood RC-2000 Instruction Manual. Cover- age Transmit. pdf), Text File (. TS440S Repair FAQ I take no responsibility for any damage you cause to your TS-440S. This link is listed in our web site directory since Friday Sep 10 2010, and till today "Repairing a Kenwood TS-940S" has been followed for a total of 1888 times. Ts-430s Service Manual. I do understand using the SSB filter and digitally making the CW filter in the 4th IF works fine. TS940 AVR Board. D130 is for Gen. User Manual. Of course it will work as a regular transmitter monitoring scope without any modification to your TS-440. ACOM - 1000. KMC-35, Standard Dynamic Mobile Microphone (8-pin mod plug). Coverage includes the WARC bands. As of now, after the mod's below I am very satisfied with my station sound! The stock 940 will pass some very low frequency response with a. PDF, rus - 457kb ACOM - 2000A. PIEXX TS-930SE Digital Board for the Kenwood TS-930. 0 MB) block diagram. HTML Mods For The Kenwood TS 930 Size: 8329 Bytes; TS 930. 39 or later, and Chris. I can make your 940 / 930 trouble free and perform as new again !!. Kenwood was founded as the Kasuga Radio Company in 1946 as a builder of electronic components and amateur radio equipment. I recently purchased a Kenwood TS-940S/AT (serial number over 20 mil) - I know that the user manual states 100 % duty cycle at 100 % power - but they do put a caveat in there - something like if transmit times are going to exceed 1 hour the power output should be reduced. com in a single category. I am the proud owner of an IC-746, Love the radio has been great - but it has developed some usual IC-746 problems, burnt out backlight, loose VFO Knob, low power on 2M SSB. Mike KC8ZNW on 25/4/05 describes this same behaviour to the Kenwood. Take full control. Date Published : July 1985 Number of Pages: 72 Kenwood TS-940S Complete TX Coverage Modification: 11. 8KHz) and make the rig sound "great", all the while keeping the audio narrow enough to be neighborly. 1 Disconnect the power and antenna. I hope it helps someone! TCX. A complete drop down control panel, user preferences, load and save favorite frequencies and much more. 73, Clif Holland KA5IPF Millie Holland W5AUX Current Items For Sale Parts S40-2418-05 Power Switch for TS930/940 $7. zip TS-940S_review_QST_1986. Menu #34 should be set at 4-5 and can be increased to provide more Receive Audio if needed. kenwood mc-42s microphone. The external VFO for the '180 gave me back the split operation that had always been part and parcel of operating separates, which had been my configuration for the previous eight years. PARTS NEEDED: 1/4w resistors, 4. Kenwood TS-940S Audio Mods by Don, KE1IZ. MISC - Kenwood YK-88S1 2. Hello, and Welcome to N4ATS. As of now, after the mod's below I am very satisfied with my station sound! The stock 940 will pass some very low frequency response with a. Secret CB Volume Twenty-Two Documentation Project CBTricks. This link is listed in our web site directory since Friday Sep 10 2010, and till today "Repairing a Kenwood TS-940S" has been followed for a total of 1888 times. Input power is rated at 250 PEP on SSB, 200W DC on CW, 120W FM (optional) and 60W AM.