Back to Home Technical Information on

Land Mobile Radio Equipment
Compiled by Mike Morris WA6ILQ
Maintained by Robert Meister WA1MIK
Click here or on the logo above for the main Kenwood web site 		 

Contact / Service / Parts Information:
  USA West Coast           USA East Coast           Canada          
  Kenwood Communications Corp.
2201 East Dominguez Street
PO Box 22745
Long Beach, CA 90801-5745 USA
Customer support: 310-639-4200
Repair locations and parts: 800-KENWOOD
(or) 800-536-9663
Fax: 310-537-8235
http://www.kenwoodusa.com 		Kenwood Corporate Offices
3975 Johns Creek Court Suite 300
Suwanee, GA 30024
Main: (678) 474-4700
Fax: (678) 474-4730
http://www.kenwood.net 		Kenwood Electronics Canada Inc.
6070 Kestrel Road
Mississauga, Ontario, Canada L5T1S8
 
  Kenwood Service Center West
13030 Alondra Blvd., Suite 104
Cerritos, CA 90703-2257
Repairs Only: (562) 483-874
Fax: (562) 483-8749 		Kenwood Service Center East
829 Lynnhaven Pkwy., Suite 130
Virginia Beach, VA 23452
Repairs Only: (757) 340-1702
Fax: (757) 340-6809
 
  Pacific Coast Parts
Orders: (800) 262-1312
www.pacparts.com 		Kenwood Amateur Parts
(Also known as East Coast Transistor)
Orders: (800) 637-0388
www.kenwoodparts.com


Note that the contents of this page, like most here at www.repeater-builder.com, are totally dependent on donations of information.
If you have a hint, or a useful trick, please consider wiring it up, writing it up and sending it in.

Information and Modifications
General Information and Yahoo Groups
Repairing the Toshiba S-AV17 RF power hybrid   Used in the TM-241, TM-741 2m module, and others... by Kevin Custer W3KKC
How to mod a Kenwood TK-805 for UHF link or remote base operation   349KB PDF by Dwayne at LDG Electronics
PS-30 Schematic (with repair notes)   904KB courtesy A. Nony Mous
Courtesy of Greg Beat W9GB we have the full PS-30 Operators Manual.
A library of 16 different microphone, speaker-mic, accessory plug, etc. Kenwood connector diagrams   202 KB PDF
A drawing of the 6-pin RJ-style microphone connector on the TK-705 / TK-805, the TK-760 / TK-860 and several other models.   4KB GIF
Some notes on the TR-7930 and TR-7950   By Mike Morris WA6ILQ
Rock solid radios in their day...   A couple of friends had these, and used them until just a few years ago - they had Com-Spec external TD-32 PL encoder boxes strapped to their radios.
Adding a CTCSS encoder to the TR-8300.   19KB PDF     Click here for a photo.   Additional information about the 8300 can be found here.
The Kenwood PG-4S programming cable is used to program a Kenwood TM-V7A or a TM-G707A. You can make your own using info from the KA7O web site page on the PG4S. Supposedly you can use an inexpensive KPG-4 (6 pin) or KPG-46 (8 pin) cable from eBay and change the plug (the plug and cable from a dead PS/2 mouse works just fine), or make an adapter from a 6-pin or 8-pin jack and the plug end of a PS/2 style PC keyboard or mouse extension cord. Click here for additional Kenwood TM-V7A / TM-G707A programming information.
Some notes on the Kenwood "packet" connector
Modifying Kenwood TK860 TK862 TK760 TK762 Radios for Link Use   by Kyle Yoksh KØKN

Manuals
The publications group at Kenwood seems to have decided
that a "dual band" radio is dual simultaneous receive,
and a "twin band" or "two band" radio is one at a time.
Kenwood seems to use the convention of model numbers starting with TK for land mobile (commercial 2-way) LMR, TM for amateur radio mobiles, TH for amateur radio portables and TS for amateur radio station equipment.
TH-F6A and TH-F7E Service Manual   4.5 MB PDF
This is the basic manual, the next file is the supplement.
The F6A is a 144 Mhz / 220 MHz / 440MHz FM TRIBAND handheld, the F7E is the European 144 MHz / 430MHz FM DUAL BAND handheld
The difference between the two radios is one diode. Click here to read about a critical design flaw with the TH-F6 and TH-F7 radio.
KB2LJJ's page on the radio. Some of the info came from our web page on it...
TH-F6 and TH-F7 Schematic Diagram   2.2MB PDF
TH-F6A and TH-F7E Service Manual Supplement   6.2 MB PDF
This is the supplement, the previous file is the basic manual.
"This supplement is aimed to revise and update the following PCB layout, J72-0778-09, J72-0778-29 and J72-0778-39."
TH-78 Owner's/Instruction manual   294KB PDF
TH-79 A/E Instruction manual   2.7MB PDF
TH-79 A/E Service manual   2.7MB PDF
The TH-D7AE is a dual band handheld that has a built in packet / aprs TNC.
TH-D7-AE Service Manual   7.35 MB PDF
TH-G71A and TH-G71E Instruction Manual   2.58 MB PDF
Th-K2 and TH-K4 Mono-band portable Instruction Manual   1.3MB PDF
TK-190 Sales Brochure   980kB PDF
TK-190 Instruction Manual   180kB PDF
Roger WA1NVC reports "I recently bought a TK-190 and put it on the 6m ham band. This series uses the same battery, speaker-mic, programming cable, etc as the TK-380 and TK-481. The antenna connector on the radio is an SMA male."
TK-190 Service Manual   3.8MB PDF
Roger WA1NVC reports "The Windows based Kenwood KPG-59D software and the Kenwood KPG-36A serial programming cable can be purchased from www.kenwoodparts.com or a local Kenwood dealer. The software will program the radio from 29.7 to 50.0 MHz. To put the radio on 10m or 6m, depending on model, you will need to hex edit the code plug. Once the data is edited, you can view it and program the radio but you cannot enter or change a frequency to one above 50.0 or below 29.7."
KRA-21 Field Tunable Antenna Cutting Info for TK-190 Series Low Band Portable Transceivers   1.2MB PDF
TK-290 Service Manual (1998 version)   856 KB PDF
The TK-290 is a 160 channel VHF handheld. It is a 7.2v rated radio! Do not use a mobile power cord from a 12v source without a voltage regulator in the cord.... This is the voice of experience, I watched a friend smoke his radio...
TK-290 Service Manual (1998 version)   3 MB PDF
TK-715/(N) Service Manual (1997 version)   6.3 MB PDF donated by John Casullo N2QKV
TK-760/762 Service Manual (1996 version, NO schematic)   1.5 MB PDF donated by Greg Beat W9GB
TK-790 Service Manual (2001 version)   6.3 MB PDF
This is a 160 channel VHF mobile radio good for 4 to 45 watts (TK-790) or 45 to 110w (TK-790H).
Noted as follows:This service manual applies to products with 30300001 or subsequent serial numbers.
(KCH-10 and KCH-11 front panels are applicable to the productions June 2001 and after.)
In terms of the products with the serial numbers earier than 30300001, refer to the TK-790/(B)/H(B) service manual as per part No. B51-8438-00 and the TK-790(B) service manual as per part No. B51-8456-00.
TK-790 Supplement (dated 2005)   38 KB PDF
Noted as applicable to units with serial numbers 60400001 and above.
TM-221/TM321/TM421 A/E/ES Owner's manual   2.2MB PDF
TM-241-441-541 Owner's manual   (horizontal - oriented towards reading on the screen) 2.26MB PDF
The same manual except vertically oriented (for printing)   2.2MB PDF
TM-241A/TM-241E Service manual   5.74 MB PDF
TM-261A, TM-261EJ and TM-461A Instruction manual   2.9 MB PDF
TM-261A Service manual   1.8 MB PDF
TM-261A Schematics   676 kB PDF
TM-271 Adjustments section of the service manual   This is a really poor scan. It's also contained in the service manual below.
TM-271A Service manual   36.7MB PDF
TM-641A / TM-741A / TM-741E Instruction manual   6.5 MB PDF
These radios can draw as much as 12 amps on transmit, and the DC wire pigtail hanging from the back of the radio and the matching power cord that was shipped with it was undersized. The transmitter is sensitive to low DC voltage, a voltage drop of less than a volt can cost you 25% of the transmit output power. Measure the voltage at the radio while transmitting (the simple way is to temporarily push a couple of sewing pins through the insulation of the power cable right by the strain relief). If it does not remain above 13vDC you will have to check the voltage at the power source (i.e. at the vehicle battery). If that is fine then you will need to change the wiring to a larger size (lower resistance) wire. Been there twice, done that twice, got the t-shirt (but not the coffee cup). I replaced the short pigtail in the back of the radio with the heaviest red / black zip cord I could find and enlarged the hole in the back of the radio for a larger strain relief. The pigtail had a 15 amp mini-ATO type automotive fuse in it. I also replaced the cable from the battery to the pigtail. At the time the biggest wire available was #12, but since then I've seen #10 at HRO, and saw #8 in a catalog. Be careful, don't trust the insulation size to be indicative of the wire size, look at the copper cross-section.
TM-641 / TM-741 Service manual   15.4MB PDF
A tip on the 641 / 741 / 941 / 642 / 742 / 942 series from Rian AG4ME:
If you have no audio output, and the light dimmer does not work then look at resistor R121 and maybe transistor Q102 in the control head becoming un-soldered.
TM-721 Service manual   15.9MB PDF
TM-733A/E Instruction manual   13.8MB PDF
The TM-D700 is a dual band mobile that has a built in packet / aprs TNC.
  TM-D700 sales brochure   679KB PDF
  This is the software package that lets the PC program the radio (freeware).   398KB executable file
  TM-D700 APRS / Packet manual   855KB PDF file
  TM-D700A Owner's / operator's manual   2.68MB PDF
The TM-G707 is a basic twin band mobile (one band at a time - For simultaneous receive see the TM-V7).
  TM-G707 sales brochure   817KB PDF
  TM-G707 Instruction Manual   2.5MB PDF
  TM-G707 Service Manual   7.48 MB PDF
  See the article above on the Kenwood "packet" connector.
The TM-V7 is the dual band mobile. The early ones had a history of developing lines in the display due to a poor design. Kenwood did a recall/replacement of the displays, but naturally some folks didn't get the word. If you have a used V7 that has lines you will have to live with it, there are no more replacements to be had. Or use it as a remote base. (note from WA6ILQ: If anyone has a replacement display module (or has a V7 in use as a remote base and could live with a defective display) let me know, I've got a local disabled ham that has a bad display and can't afford a replacement on his limited income)
  TM-V7A / TM-V7E Instruction manual   4.9MB PDF
  TM-V7A / TM-V7E Service manual   2.7MB PDF
  A "usability" note from Dan Hopper KU4NF on the TM-V7A radio and the PC software they provide to upload and download the 180 memories... if you download the radios memory, move some locations around and thus create some newly empty locations, and then write it back to the radio it doesn't seem to delete the now-empty locations like it should, it merges the upload with the momory contents resulting in duplicate locations where the old entries are visible in the empty channels in the new data. My workaround is to delete all the memories in the radio before doing a write to the radio, thus giving the new data a clean slate to program into. How do you erase only the memories and none of the other settings? None of the power-up hotkeys seem to do this. However, if you have the radio change the VHF/UHF channel ratio, it'll prompt you to OK erasing all the memories. Do that, then change it back to your original ratio or a new ratio, and then write from the software to the radio. Kludgy, but it works.
Note from WA6ILQ - The same problem will probably happen in the TMG-707 series. If Kenwood is going to fix the duplicating problem (don't hold your breath), another feature that would be nice to add is a way to export the download as a Excel file, allowing the user to use Excel (or the spreadsheet from the free Open Office package) to manipulate the data, then import it back into the Kenwood package for uploading to the radio.
  See the article above on the Kenwood "packet" connector.
TM-V71A / TM-V71E Instruction Manual   4.3 MB PDF courtesy A. Nony Mous
For details on the programming (PG-5G) and audio (PG-5H) cables click here: http://www.kenwood.com/i/products/info/amateur/pg5g_5h_e.html
The free programming software for the radio can be downloaded from Kenwood at http://www.kenwood.com/i/products/info/amateur/mcp_2a.html.
Or from here: Download MCP-2A Version 3.10 (filename: M2A310.exe; file size : 3.72MB),
or if you have a paranoid ISP that forbids downloading EXE files you can click
here: Download MCP-2A Version 3.10 (filename: M2A310.zip; file size: 2.95 MB).
The only difference is that the executable file inside the ZIP is renamed to M2A310.EEE, you will have to rename it to EXE before running it.
There is a firmware update to this radio according to http://www.kenwood.com/i/products/info/amateur/tmv71_d710_main_update_e.html that increases the usability as a remote base or EchoLink radio.
TM-V71 Service Manual   5.7 MB PDF courtesy A. Nony Mous
TM-V71 Mods   5.1MB PDF courtesy of A. Nony Mous
TM-V71A Brochure   2.4MB PDF courtesy of A. Nony Mous
TR-7400A Service Manual   10.8MB PDF file
TR-7600 User / Operating manual with schematic   2.03MB PDF courtesy Jim MacDougald KB6ZOP
TU-79 Tone Board manual   For the TR-7950/30 radios.   238KB PDF
PS-50 Manual   For the TS-440 and others.   584KB courtesy of A. Nony Mous
TS-140s / TS-680s Instruction Manual   1.16MB courtesy of A. Nony Mous
TS-440S Instruction Manual   7.0 MB PDF courtesy of A. Nony Mous
TS-600 User / Operating manual 6M all mode radio   3.6 MB PDF
TS-700 User / Operating manual 2M all mode radio   1.9 MB PDF
TS-700 Service Manual - Larger PDF file, about 49.6MB     Smaller PDF file, about 15MB
Get the larger file if you have the download bandwidth.   The files are larger than they would normally need to be as both files have a lot of background shading (i.e. the background is a varying shade of grey rather than white).
Service manual for the TS-850S:
Part 1   2.7 MB PDF
Part 2   1.3 MB PDF
Part 3   2.9 MB PDF
Part 4   1.4 MB PDF
All 4 Parts as one file   8.1 MB PDF

900 MHz Kenwood Radio Manuals and Info
As mentioned above the radios that have a model number ending in a zero is 800 MHz, and ending in a 1 is 900 MHz
In other words, TK or TM-nn0=800 MHz, TK or TM-nn1=900 MHz.
Additional information on 900 MHz radios and programming software can be found here.
Handhelds:
Anybody have a step-by-step programming procedure for the 900 MHz TK-431 or 481 handheld ?
Anybody have the catalog page / specifications sheet PDF or service manual PDF for the TK-431 handheld ?   Or one we can scan ?
Catalog page / Spec Sheet for the TK-480 (800 MHz) or TK-481 (900 MHz) handheld   704 KB PDF
Another catalog page / Spec Sheet for the TK-480 (800 MHz) or TK-481 (900 MHz) handheld   534 KB PDF
TK-480 / TK-481 900 MHz hand held service manual including parts lists   Revised for units with serial numbers after 30100001, dated March 2001   64 pages, 2.83MB PDF file, donated by A. Nony Mous
TK-480/481 transceivers with a serial number of 30100001 or greater have a red triangle above the "W" in the KENWOOD logo label at the top of the front panel. You will also find the model name plate marked as “Ver 2.0” on the rear of the transceiver. You must use the KPG-49D to program Version 2.0 units. You cannot use the KPG-35D software for Ver. 2.0 radios. The KPG-36 cable is used with either software.
TK-480/481 Leather Case is the KLH75B (non-DTMF) or KLH76B (DTMF).
The nylon case is the KLH86.
The Speaker-microphone is a KMC25.
The heavy duty public safety speaker-mic (has the antenna on top) is the KMC-41.
Thanks to Dave Clausen NN4TT and Bob Brown WØNQX for these part numbers.
Mobiles:
Anybody have a step-by-step programming procedure for the 900 MHz TK-931 mobile?
Step-by-step conversion and programming to use two TK-941 radios as a repeater   10 MB PDF file
Includes screen shots at every step in the programming, annotated schematic and PCB images, and photos of the repeater controller wiring. Submitted by Ray Montagne W7CIA
TK-981 step-by-step programming procedure   38 KB PDF by Chip Olheiser W7AIT
Catalog page / Spec Sheet for the TK-930 (800 MHz) or TK-931 (900 MHz)   891KB PDF, donated by A. Nony Mous.
This is a very poor scan, anybody have a better one?
TK-930 or TK-931 Mobile non-DTMF microphone is a KMC-2A or B
DTMF mobile microphone is a KMC-18 or KMC-18A (it's a 12-button mic).
The base mic is a KMC-9C.
Anybody have a PDF of the catalog page / spec Sheet for the TK-94n mobile ?   Or one we can scan ?
Catalog page / Spec Sheet for the TK-980 (800 MHz) or TK-981 (900 MHz)   353KB PDF, donated by A. Nony Mous
Anybody have a PDF of the owners manual / users manual for the TK-93n mobile ??
TK-840, TK-940 and TK-941 900 MHz mobile instruction manual undated   1.75 MB PDF file, donated by A. Nony Mous
TK-770 (VHF), TK-880 (UHF), TK-980 (800) and TK-981 (900) mobile instruction manual undated   1.1 MB PDF file, donated by A. Nony Mous
TK-880 (UHF) mobile service manual 2002   7.5 MB PDF file, donated by Ray Miles K7LNA
TK-880/H (UHF) mobile service manual 2001   4.1 MB PDF file, donated by A. Nony Mous
TK-941 900 MHz mobile service manual dated Aug-1994   6.2 MB PDF file, donated by A. Nony Mous
Anybody have a PDF of the Kenwood TK-980 / TK-981 mobile service manual PN B51-8478-10 ?
TK-980 / TK-981 mobile service manual supplement dated Jan-2005   908 KB PDF file, donated by A. Nony Mous
From the cover page: "This service manual applied to products with 30600001 or subsequent serial numbers. In terms of the products with the serial numbers earlier than 30600001, refer to the TK-980/981 service manual as per part No. B51-8478-10."
TK-980 / TK-981 mobile service manual supplement dated Jan-2005   908 KB PDF file, donated by A. Nony Mous
From the cover page: "This service manual applied product with 50100001 (TK-980), 60600001 (TK-981) or subsequent serial numbers."
The TK-931 mobile microphone is a KMC-2A or B, the DTMF mobile microphone is a KMC-18 or KMC-18A (it's a 12-button mic). The base mic is a KMC-9C.
The part number of the the TK-931 mobile mounting bracket is J29-0418-03.
The TK-981 base mic is a KMC-9C. The mobile microphone is a KMC-27A or B, the DTMF mobile microphone is a KMC-28A (it's a 12-button mic). The "A" is significant as the KMC-28 has a different connector to the radio, the mic must be a KMC-28A. Click here for a PDF of the KMC-27 series / KMC-28 series documentation.
The original TK-981 mobile mounting bracket is a part number J29-0627-13, superceeded by the J29-0728-03 which will run you about seven dollars (USA). If the coax connector is damaged you will probably have to replace the entire coax pigtail, which is part number is E30-3031-25 (which will run you about $30.00). Either can be purchased from East Coast Transistor or Pacific Coast Parts.

900 MHz Mailing Lists and Web Sites
There are two 900 MHz lists and the first one listed below has 90% of the message traffic. Note that these are 900 MHz lists (for any radio, not just Kenwood) and do not take kindly to off-topic discussions. Personally, I'd subscribe to both. If you change your mind you can always unsubscribe later.
http://groups.yahoo.com/group/AR902Mhz   From the description text: "This listserv is used to further experimentation and utilization of the 902-928 MHz amateur radio spectrum using voice and data communications. Please limit your posts to information relating to these subjects ONLY. Want and For-Sale ads allowed. Do not post EBAY links. Do NOT list non-900 MHz applicable items."
http://groups.yahoo.com/group/900mhz   From the description text: "For those interested in utilizing the 900 MHz amateur radio band. This group is here to discuss modification of commercial radio gear to amateur radio use, repeater construction for 900 MHz, and other related topics relating to the 900 MHz amateur radio band."
Alex Szuski KD6VPH has put together a web site oriented towards 900 MHz Kenwood radios. Check out http://www.kw902.com.

Kenwood Land Mobile (commercial) Radio Products Background information, models, and other contributions.

Some notes on programming and interfacing the Kenwood TKR-720 and TKR-820 repeaters   A "quickie" page that was put together to share two pages of handwritten notes from my file cabinet that cover interfacing a TKR-n20 repeater to an external repeater controller. If anybody wants to turn them into a photo article feel free to do so and send it in.

Brute Force Hacking the Kenwood TKR-720 and TKR-820 Series Repeaters   By Matt Krick K3MK
This writeup shows you how to move a TKR-720 or TKR-820 around the band when you don't have access to a KPT-20 or KPT-50.

Adding a Ham Gadgets ID-O-Matic II Controller to a Kenwood TKR-720 (VHF) or 820 (UHF) Desktop Repeater   11.1 MB PDF by Bob Lawrence KI4RWL
A photo article that walks you through the installation of a commercial IDer board in a popular desktop repeater

Com-Spec has hookup information for their TP-38 community repeater panel to the TKR-720 or TKR-820 at their web site. There is enough information buried in their web page to guide you in hooking up a generic repeater controller (like an ACC, an RLC or an Scom) to the TKR720 or 820...   a local copy is here just in case...

Homebrew programming interface equivalent to the KPG-4   The KPG-4 is the RS-232 to TTL cable that is used for programming most any commercial or amateur Kenwood radio.   35KB PDF from K9MN

Another version of the above KPG-4 replacement   This diagram is similar to the above but with a lot more info - it shows the DB9 and DB25 connections, and the handheld connections.   13KB GIF from KC7GF

A list of Kenwood Radios, the software needed, and the programming cables needed   A work in progress, contributions welcomed!   By Mike WA6ILQ

Kenwood programming software names, versions, radios, and release dates   Donated by Garrett Ramsey

A newer list of software versions, radios, and release dates   70 kB PDF file; Donated by A. Nony Mous

TK-250 and TK-350 instruction manual   1.4 MB PDF file, donated by A. Nony Mous

TK-380 "E series" service manual   4.1 MB PDF file, donated by A. Nony Mous
Despite the fact that this is titled a service manual pages 3 through 15 are the end-user instructions.

TK-860G and 862G service manual   5.9MB PDF file, donated by A. Nony Mous

Mark Seidler N9XK has done a bunch of research on the TK-805 UHF radio. He has a web page (offsite link) on how to front-panel program them. The information applies to the TK-705 VHF radio as well.

Art Bross KC7GF used to have a Kenwood TK-705 and TK-805 Radio page but the hosting company went away. He moved it to a Yahoogroup at www.groups.yahoo.com/group/kenwood_05s. The information available there covers programming from a PC as well as programming them from the front panel. BEFORE YOU BUY AN 805(D) CHECK THE VERSION NUMBER ON THE BACK. There are 4 different versions of the 805 and 805D and you need to look at the rear FCC ID# label. A -1 is for the 450-470 MHz band. A -2 is for the 470-490 MHz band, a -3 is for the 490-512 MHz band and a -4 is for 406 to 430 MHz "government" band. The 450-470 MHz band TK-705D and TK-805D will work fine with no modifications in the ham bands, however you will need the "H" version to get 45 watts out of them. The stock non-H versions only put out around 30 watts (retuning with a service monitor makes them better). Art's group page also has links to other Kenwood-related sites. He also has some downloadable manuals available at http://www.rfstuff.com/store/manuals.asp.

Field programming the TK-270 or TK-370 Handhelds   A writeup on front panel programming of these models. It's somewhat cryptic and since I don't have one of the radios to experiment with I can't build on it, if anyone wants to add some detail (or some photos) feel free to, then email it to us.

Ken Arck AH6LE owns Arcom Communications and they make repeater controllers, including the RC-110, RC-210 and RC-810 models. Ken has provided a writeup on connecting a RC-210 to a TKR-x50 series repeater. The 210 uses a simple enough interface that the information will be of value on any repeater controller.

Here's a few photos of the Kenwood repeaters (7xx=highband, 8xx=UHF):


Here's a photo of the older TKR-720 / 820     Kenwood brochure (120KB pdf)
There is a rack mount kit, or you can set it on a rack shelf.
The black square at the bottom right corner is the microphone jack.
Here's another photo
A schematic of the TKR-720 on 48 separate pages   2MB PDF
The TKR-720/820 service manual   36 MB PDF
Another copy of the TKR-720/820 service manual   27 MB PDF
Another copy of the TKR-720/820 service manual   12.7 MB PDF
How to connect a TKR-720 or TKR-820 to a Com-Spec TP-38 repeat panel ...or almost any other repeater controller   87KB PDF


Here's a photo of the newer TKR-730 / 830
Anyone have any experience with it?
Any PDF'd brochures or manuals available?


Here's a photo of the TKR-740 / 840, Kenwood's current top-of-the-line repeater
Kenwood 740 / 840 brochure (130KB pdf)
Kenwood 740c / 840c brochure (86KB pdf)
Kenwood 740 / 840 description (62KB pdf)
The 740 comes in three versions: TKR-740K is RX 146-162 MHz,
the TKR-740K2 is RX 158-174 MHz, the TKR-740K3 is RX 136-150 MHz.
All are TX 136-174 MHz
If you are going to order a new one for an amateur radio channel
make sure you order (and receive) a K3 version.


And the Kenwood TKR-750 / 850     Kenwood brochure (170KB pdf)
TKR-750 service manual   (5MB pdf)
TKR-750 Version 2 service manual   (3.5MB pdf)
TKR-750 Ver 2 S.M. Supplement   (500KB pdf)
TKR-850 service manual   (5MB pdf)
Function Reference (FUNC) For The TKR-750/850 Version 2 and TKR-751/851   648KB PDF
Field Programming Reference (FPRG) For The TKR-750/850 Version 2 and TKR-751/851   1.8MB PDF

Yes, you are seeing a faint "4" on the LED display in the upper picture, a "1" and a "32" on the LED displays in the middle pictures and a "16" in the bottom picture. Both the exciter synthesizer and receiver synthesizer are based on a mobile design and hence are multichannel - useful when you keep one extra repeater on the shelf to use it as a spare at several different radio sites that operate on different frequencies - just load all the frequencies into the channel bank of the spare repeater, then when you need to install it just set it to the appropriate channel, tweak the transmitter and receiver, and then cable it up to the existing duplexer / antenna system at the site.

The TKR-720 and TKR-820 were discontinued around October/November 2004.


And finally, the the high power Kenwood repeaters - essentially one of the
above units plus a power supply and a power amplifier, all in a cabinet.

Anybody have a photo of a single-channel repeater?

The photo on this brochure shows a conventional single-channel repeater system:
Kenwood brochure: TKR-7400 / 8300 / 8400 (52KB pdf)

The photos on this brochure show a 3-channel and a 5-channel trunked system:
Kenwood brochure: TKR-7400 / 8400 (87KB pdf)


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Information provided from various sources as listed in the text.
Hand-coded HTML © Copyright date of last edit by Mike Morris WA6ILQ.
You can contact Mike at (callsign) at repeater-builder dot com

This page originally posted on 14-Oct-2004

This web page, this web site, the information presented in and on its pages and in these modifications and conversions is © Copyrighted 1995 and (date of last update) by Kevin Custer W3KKC and multiple originating authors. All Rights Reserved, including that of paper and web publication elsewhere.