Do you have any tricks, modifications or constructions for homebrewed equipment that are not on mods. The 940 was a capable, fully featured rig and it made a lasting. The kenwood ts940s is a serious radio for the serious operator. Almost everyone who owns a kenwood ts 940, ts 440 and a few select other transceivers or even the r5000 receiver will have heard, or experienced, the dreaded pll wax potting curse. Ts940s, provided the input impedance of the transmis sion line is not outside the capability of the at940 auto matic antenna tuner pioutput matching network. In 1985 kenwood, a japanese company, began to produce the ts940s hf transceiver and discontinued it in the 90s. English usa user manual, view ts940s pdf english usa user manual download ts940s pdf user manual. Note that there is a limit to the number of files you can download. Kenwood ts940s ts940s instruction manual glendale manuals. It has standard modes and it has a digital readout and lcd subreadout. Piexx company ts940 interface board the ts940 interface fits inside of the ts940, in place of the original if10b board. This site helps you to save the earth from electronic waste. Jul 10, 2011 download countless of free service manuals you find nowhere else.
If you prefer to be anonymous write it in the message. Service manuals usually include printed circuit boards, block diagrams, exploded views, assembly instructions and parts catalog. Orient the cable so it is lying flat and exiting the rear. By no means would i purchase one based on the serial number though. For sale is reprintreproduction of kenwood ts940s hf transceiver instruction manual. One of the biggest problems with the ts 940 has been the power supply. The modifications below will dramatically improve the response and flatness of the receiver. See the fets q10 rf preamp preamp 2sk125, nfet, 25v, 0. Here is where you find the manuals for the various ts series products. Simply follow the link provided above and you can directly download. Once you get the speaker and control panel removed, then remove the cover for the digital a board housing. Kb2ljj radio mods database and manuals page 1 of 10 ts. Kenwood service manual ts 940s by elainehaney2427 issuu. If you cant find a manual please do not contact us.
The picture above was scanned from the ts 940s service manual, revised edition. In case of damage, to replace these transistors you have to follow some tricky steps. Pdf service manualschematics for kenwood ts940s ts 940 s ts940s. The picture above was scanned from the ts940s service manual, revised edition. The ts940 is known for intermittent connectors and poor soldering where they attach to pc boards. There is quite a large clearance between the top radio cover and the internal assemblies of the ts940 in the center of the case, just to the left of the final amplifier assembly when viewing the transceiver from the front. Kenwood tk940 service manual kenwood th22e users guide. Radio manuals on qrzcq the database for radio hams. Kenwood ts940sat free knowledge base the duck project. How to increase rx sensitivity of kenwood ts 940s and ts 940sat an article posted on the longwire, december 2004, published by the liverpool amateur repeater club larc. Piexx company ts 940 interface board the ts940 interface fits inside of the ts 940, in place of the original if10b board. At 940 unit there are two versions for the ts 940s. The top was badly scratched, the cw pitch control shaft and knob were broken, the phones jack and ground terminal were not attached to their respective panels.
English different language versions may vary sligthly in file size and page count. Ts940s repair 2017 1 30 document by david lowrance al5x. Kenwood ts 940 ts 930 supply upgrade project after being a ham for over 50 years, i have finally decided that one of the best transceivers ever made is the kenwood ts 940. I know that there is a lot of controversy on the 940 with the reversed transistors. How to increase rx sensitivity of kenwood ts940s and ts940sat an article posted on the longwire, december 2004, published by the liverpool amateur repeater club larc. Before making any tests on either board it is best to check that the supply voltages are correct. Remove the bottom cover and locate the control pcb. Parts and suppliers power supply rebuild project avr pc board and heat sink power semiconductors replace components some bad. Service manual for kenwood ts940s, downloadable as a pdf file we also have owners manual to this model manual details.
Manual was scanned in our shop at 800dpi, cleaned in adobe photoshop, printed on heavy 28lb archival paper. A tiny drop of deoxit helps on the pins while a small iron works to flow new solder on the under side. The main category is kenwood ts 940s that is about kenwood ts 940. Kb2ljj radio mods database and manuals page 1 of 10 ts 940. No guarantees of accuracy are implied and if your repair fails, i disclaim all responsibility. Download countless of free service manuals you find nowhere else. Kenwood ts940s display problem with a twist qrz forums. Kenwood ts940 instruction manual kenwood ts940s alignment instructions kenwood ts940s service manual kenwood tv502 operating manual.
Kenwood ts830s service manual wo large schematic drawing. The main category is kenwood ts940s that is about kenwood ts 940. The kenwood ts 940s is a serious radio for the serious operator. Kenwood ts940 service manual download, schematics, eeprom. The rear panel has antenna and io jacks plus ac cord input. It has an original owners manual and mc43 hand mic. Different language versions may vary sligthly in file size and page count. Kenwood ts2000 service manual kenwood tkr751 users guide. Kenwood ts940s service manual pdf download manualslib. There is quite a large clearance between the top radio cover and the internal assemblies of the ts 940 in the center of the case, just to the left of the final amplifier assembly when viewing the transceiver from the front. Kenwood tk940 service manual kenwood th22e users guide kenwood th42e users guide. My ts940sat had been stored in a garage for 1012 years before it was given to me in september 2014.
Kenwood ts940s ts940s servicerepair manual, schematic. Service repair manual for kenwood ts940s original from manufacturer definition depending on the type of product, a service manual includes schematic and block diagrams, printed wiring boards, waveforms, parameters and ic pin descriptions, parts list, drawings and schematics of mechanisms. These are located in the upper right hand corner as the rig faces you upside down near vr3. This all mode transceiver covers 160 to 10 meters with a general coverage receiver. The 28 volt pa line shorted took out the power supply most of the transistors in it after repairing that it powered on and rxed but no tx it makes a chatter over speaker like a motor boating and a relay in the filter board on all bands and modes puts out no power the tx led. Immediate download after payment delivered as a pdf file. Many thanks to john, ki4nr and mike wz5q for the help and guidance with these mods. Kenwood ts 940s service manual this service manual contains complete information included in original factory repair manual we guarantee that our manual contains circuit diagrams. One of the biggest problems with the ts940 has been the power supply.
Click here to write a new message or comment for ts940 note that the message is not related to any article click here to see the article list for ts940. Incorporated into the board is the rs232 level converter as well so you wont need the external, if232c, box. Service manuals usually include printed circuit boards, block diagrams, exploded views, assembly instructions and. An antenna sys tem which shows a standing wave ratio of less than 1. Click here to write a new message or comment for ts 940 note that the message is not related to any article click here to see the article list for ts 940. This service manual contains complete information included in original factory repair manual we guarantee that our manual contains circuit diagrams. He bought a secondhand rig in the early 90s, previously having used a ts440sat for most of his hf operating. Download kenwood ts940s ts940s service manual ham radio, amateur radio, two way radio, cb radio, walkie talkie service manuals and repair information. Kenwood ts940s ts 940 s ts940s factory assembly mistakes kenwood ts940s ts 940 s ts940s bad solders kenwood ts940s ts 940 s ts940s remote relay elimination. Although they had a few issues on the earliest runs, all were fixable and as the serial numbers grew the issues went away.
Kenwood ts940s ts 940 s ts940s pa drivers replacement any owner of ts940 knows that this radio has very pour pa drivers, mrf485 from motorola. Ts 940s, provided the input impedance of the transmis sion line is not outside the capability of the at 940 auto matic antenna tuner pioutput matching network. Kenwood ts480hx users guide download delayed confirmed in 24 hours max. Owners manual for kenwood ts940s, downloadable as a pdf file. Jul 07, 2014 the ts 940 is known for intermittent connectors and poor soldering where they attach to pc boards.
Superb interference reduction circuits and high dynamic range receiver combine with superior transmitter design to get your signal through. View and download kenwood ts940s instruction manual online. At first is was only doing 50 watts and i had it warming up and it died. Orient the serial cable out the rear of the ts940 transceiver. This procedure allows modification to the control pcb x53142011 in the ts940 without having to remove the board. And when you click on the file or icon it will count as a download. Ts 940 mods a brazilian ham found two factory assembly errors that, if corrected, may improve sensitivity and agc performance of your ts940s. In 1985 kenwood, a japanese company, began to produce the ts 940s hf transceiver and discontinued it in the 90s. Possible cure for the dreaded ts940 dot display problem. Orient the serial cable out the rear of the ts 940 transceiver. If you cannot download this file, try it with chrome or firefox browser.
Kenwood ts940s user manual english usa user manual. Resources listed under kenwood ts940s category belongs to hf transceivers main collection, and. Kenwood ts940s, kenwood ts940s transceiver ts940s, ts940sat. Version with the at 940 version without the at 940 if unit 8. This manual includes operating instructions, circuit description. This image shows the old battery removed and the pins cleaned up for the replacement. Owners manual for kenwood ts940s, downloadable as a pdf file we also have service manual to this model manual details. Ts940s service manual free download,schematics,datasheets.
Service manuals, schematics, eproms for electrical technicians. First exposure to kenwoods at the time flagship radio was through my friend hank, ka8rzt sk. Pdf user manual for kenwood ts940s ts 940 s ts940s. Get an idea of the used market prices by looking at these kenwood ts 940sat classified on universal radio inc. Kb2ljj radio mods database and manuals page 1 of 10. Service manual for kenwood ts940s, downloadable as a pdf file.
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