Two errors that i found and are also showed in the service manual, revised edition. Ts940s repair 2017 1 30 document by david lowrance al5x. About 90% of the power measurements in radios and in external rf power meters still are simple continous wave cw output measures so that is what your ts 940 rf meter is telling you. Best diy indoor or outdoor tv antenna ever made duration. Raccolta di info manuali di ricetrasmettitori frequenze materiale didattico ponti ripetitori. Printed on higloss 28lb high quality acid free paper for a professional finish that wont turn yellow with age. Kb2ljj radio mods database and manuals page 5 of 10. Instruction manual hf transceiver model ts940s notes. First exposure to kenwood s at the time flagship radio was through my friend hank, ka8rzt sk. In this page you find schematic, users and instructions manuals, service manuals, technical supplement, leaf leads and other good stuff. Mar, 2020 kenwood ts940s ts 940 s ts940s expanded xmit.
Find great deals on ebay for kenwood ts940s and kenwood ts850s. Owners manual for kenwood ts940s, downloadable as a pdf file we also have service manual to this model manual details. Over 600 service, instruction, schematics and operating manuals. I have a problem with my ts 940 and was wondering if anyone else has had it.
Ts 940s amateur trio kenwood electronic inc komagane, build 1985, 5 pictures, japan, schematics, tubes, semiconductors, amateur transmitterreceiver and. If the timer switch is set to on, the unit sometimes does not. Print the page or schematic that you need or print the whole document. Kenwood ts 940 category is a curation of 5 web resources on, kenwood ts 940 page, repairing a kenwood ts 940s, kenwood smart memory ksm by pp1etl. When signals that interfere with the target signal multiply, this is a convenient function for operations such as dampening interference signals, even if it cuts down some of. These are manufacture on larger substrates than is the case with other 1 00 w transistors and have superior lineari ty. Find great deals on ebay for kenwood ts 940s and kenwood ts 850s. Programming software for kenwood ts940s ts 940 s ts940s. The rear panel has antenna and io jacks plus ac cord input. View and download kenwood ts940s service manual online. Second hand ts 940s non tuner version the kenwood ts 940s is a serious radio for the serious operator. If the control is turned fully clockwise, the reception sound sometimes cannot be heard. Orient the serial cable out the rear of the ts940 transceiver.
Kb2ljj radio mods database and manuals page 1 of 10 ts. Kenwood ts940s service manual download, schematics. 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. Kenwood ts940s ts940s servicerepair manual, schematic. Doa dead on arrival cover removed transporting myself back in time, to the era when you fixed the circuit rather then simply changing out the broken board, you either enjoy the challenge of comprehension, or you run away and hide in depression, because looking under the hood reveals a system that appears so complex that no one could really keep it all straight.
If the frequency is changed, the correct display will appear but return to decimal. View and download kenwood ts950sd service manual online. The transistors used in the final amplifier are motorola mrf422s with a vc of 28 v. For sale is reprintreproduction of kenwood ts 940s hf transceiver instruction manual. This radio is most definitely not working, missing many parts and incomplete. The main category is kenwood ts 940s that is about kenwood ts 940. You may want to look at the following pictures before. Download countless of free service manuals you find nowhere else.
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. Service manual, instruction manual kenwood ts940s service manual 109 pages. Replacing the first caps c188 through c199 simply allows more bass response to arrive at the input of ic 3, the main speech amp. Kenwood ts940s service manual cdrom pdf ke3gk ebay. Kenwood ts940 assembly error corrections radio mods. Version with the at940 version without the at940 if unit 8. I would also be joining the yahoo ts940 group if not already a member, sometimes they know exactly what is going on and will point you right to it. The ts940s diode removal info is available in about a dozen places around the web, but no elaboration on which pc board, etc. Parts and suppliers power supply rebuild project avr pc board and.
Hi i would be looking at what voltages are coming if any from the psu per the service manual. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. After many tests, i undrstand that the problem is the rl2 contact, because i can hear the relay work, but the tl922 no. Ts940s have lower 3rd, 5th, 7th and 1 ith order imds than do conventional final transistors. The kenwood ts 940s is a serious radio for the serious operator.
View and download kenwood ts940s instruction manual online. Service manuals, schematics, eproms for electrical technicians. All the frequency digits change from numbers to decimal points. If the timer switch is set to on, the unit sometimes does not function even when the power switch is set to on. Superb interference reduction circuits and high dynamic range receiver combine with superior transmitter design to get your signal through. Rx even better mistakes hidden for almost 20 years. We have 7 kenwood ts940s manuals available for free pdf download. The ts990s local oscillator circuit is an independent configuration that combines the main receiver and vco frequency divisiondds, the subreceiver, dds, transmitter and conventional pll, with the targeted signal system. For windows pc if you use mac or linux let me know. Includes 48 page instruction manual and 7 page full color flyer. Kenwood ts940s, kenwood ts940s transceiver ts940s, ts940sat. Kenwood ts940s ts940s instruction manual glendale manuals.
These were imported 4 months after the introduction of the ts. Ts 940s s in the serial number range of 601xxxx through 708xxxx may be limited n ssb peak power as compared to full cw output. When the squelch is not in use, turn the sql control fully counterclockwise. Kenwood ts940 instruction manual kenwood ts940s alignment instructions kenwood. Adjust coil packs kenwood ts hybrid transceivers with uneven receivetransmit peak on drive control. Kenwood ts 940 instruction manual kenwood ts940s alignment instructions kenwood. About repairing a kenwood ts 940s the resource is currently listed in in a single category. User manuals, guides and specifications for your kenwood ts830s transceiver. This version of kenwood ts680s manual compatible with such list of devices, as.
Kenwood ts680s transceiver instruction manual pdf view. Download kenwood ts940s ts940s service manual ham radio, amateur radio, two way radio, cb radio, walkie talkie service manuals and repair information. Ts940s mrf485 driver transistor news some mrf485 transistors are being supplied by motorola with a green or blue color ranking. Sometimes, but now frequently, when i use the amplifier tl922, it doesnt go on air. Service repair manual for kenwood ts 940s 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. Ts940s amateur triokenwood electronic inc komagane, buil. I can assume that thousands of other ts 940s are also waiting to be corrected and perform. Kenwood service, schematics and instruction manuals. Kenwood ts440s service manual cdrom pdf ke3gk ebay. The picture above was scanned from the ts 940s service manual, revised edition. Download instruction manual of kenwood ts680s transceiver for free or view it online on. Kenwood ts940sat free knowledge base the duck project. Mar 17, 2020 kenwood ts 940s ts 940 s ts940s ssb talk power improvement. Jan 27, 2007 both are correct but are referring to different power measures apples and oranges.
Includes thirteen pages of 11 x 17 color schematics and board layouts. Excellent service manual on cdrom in adobe pdf format. The rules should oblige the seller to give the purchaser an operating instrucion of kenwood ts940s, along with an item. You should know that it could be even better if you do some minor corrections. The best general coverage transceivers for shortwave listening. Get an idea of the used market prices by looking at these kenwood ts940sat classified on universal radio inc.
Kenwood ts830s manuals and user guides, transceiver. The filter is capable of varying the stopband bandwidth and the amount of loss. Some corrections that will significantly improve the already very famous ts 940s receiving performance. Ts940s programming interface schematics for kenwood. Ts 940s adjustment o off power o o 010 notchsql pitchaf tune afrf cw vbt ssb slop tune centero center 010 normal preparation unless otherwise specified, set the controls as follows. Kenwood ts 940s the best hf amateur band radio transceiver especially for club operations duration. To open downloaded files you need acrobat reader or similar pdf reader program. View and download kenwood ts440s instruction manual online. This entry was posted in art, ham radio, news, radios, shortwave radio and tagged kenwood ts 940, radios in movies, spectral on june 24, 2017 by thomas. In these pictures the fets are in the wrong position. If these transistors are installed without modifying the driver bias circuit there is a strong possibility that they will fail within a very short time frame. It has standard modes and it has a digital readout and lcd subreadout.
Describe your experience with the kenwood ts940sat and tell us why you give it the rating you did required. 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. 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 1863 t. Immediate download after payment delivered as a pdf file.
Do you have any tricks, modifications or constructions for homebrewed equipment that are not on mods. Other useful information would include your experience with similar products, infomation on a product that you would purchase instead of this one, and so on. Kenwood ts940s instruction manual pdf unknown size, submitted by rigreference. English different language versions may vary sligthly in file size and page count. This manual includes operating instructions, circuit description. This all mode transceiver covers 160 to 10 meters with a general coverage receiver. Database contains 4 kenwood ts830s manuals available for free online viewing or downloading in pdf. Instruction manual hf transceiver model ts 940s notes. Manual was scanned in our shop at 800dpi, cleaned in adobe photoshop, printed on heavy 28lb archival paper. Ic 3 as used in the stock ts 940s introduces both high frequency and low frequency limitations do to the original caps used. He said it was one of the best ham radios he has owned. C200 and c203 form a high frequency negative feedback loop that kills everything above 3 khz. This unit has been out of production for many years.
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