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16 votes
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What's the pinout for "Kenwood" 2.5mm TRS/3.5 mm TRS connector?

This is the one I use for my Baofeng UV-5R.
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11 votes

What's the pinout for "Kenwood" 2.5mm TRS/3.5 mm TRS connector?

Here is a Diagram from page 11 of The (Chinese) Radio Documentation Project's Baofeng UV-5R Manual PDF:
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8 votes
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How do I put an RJ-45 connector on to repair a Kenwood MC-59 microphone cable?

Here's how to repair a Kenwood MC-59 microphone cable (ships with the TM-V71a, probably the 710, and a few LMR radios as well). First, if you didn’t know already, behind the rubber boot at the end of ...
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  • 1,615
8 votes
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Kenwood TH-D72A: what's the difference between Tone and CTCSS?

"Tone", displayed as "T" on the main screen, selects tone encoder + carrier squelch (your HT will send a tone, selected by the TONE Freq menu, and receive any strong-enough signal, regardless of ...
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7 votes
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Decoding the Morse code

If you would like to decode Morse code with an existing program: My personal recommendation is Fldigi, which is a software modem that runs on most major operating systems, including Windows and Linux....
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6 votes
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What size is the Kenwood TM-D710 panel mounting bracket?

This image of the bottom side of the bracket was taken with a flatbed scanner. The depicted dimensions were taken separately using a caliper, not by measuring on the image. The white inner area is the ...
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6 votes
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Transmitted audio coming out through my speaker

The manual, on page 56 says: TX monitor allows you to monitor the on-going transmission sound. This is convenient when you want to check the modulation sound quality of the transmission. In FSK mode, ...
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  • 7,817
3 votes

Tuning to Aviation Band on Kenwood D-710G?

First of all, only Band A (left side) can be tuned to the aviation band; if you try to use Band B it will not work. Press the left "BAND SEL" button (volume knob). Then you should be able to use the ...
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3 votes

What's the pinout for "Kenwood" 2.5mm TRS/3.5 mm TRS connector?

The origin of this connector is Kenwood. We work with Kenwood and build custom headsets for Kenwood. This link is pretty much up to date and definative. https://www.wildtalk.com/knowledge-base/kenwood-...
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3 votes

How do I replace the Li-ion battery in a Kenwood TM-741A?

I found the TM-741A service manual. As shown on page 106, the battery can be seen looking into the case from the front after the display panel is removed. Luckily, the spare batteries from my dive ...
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3 votes
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Antenna Tuner Range

I found a list of specifications for the TS-480SAT giving the matching range as 16.7 Ω – 150 Ω. Another list of specifications for the TS-870SAT says that model's matching range is 20 Ω – 150 Ω. ...
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3 votes
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Connecting a Katsumi Elekey EK-150 to my transceiver

I took it apart and found a transistor that had been blown apart, pictured below (the black one with its metal innards showing), likely from a scenario described by @rclocher3. This is the NPN ...
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2 votes

Kenwood TM-241A direct discriminator out

Typically a good place to get discriminator audio is the "high" end of the squelch control. Unfortunately the TM-241A does not have a conventional squelch control, making it necessary to tap onto ...
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2 votes

Low Audio out from Kenwood TM-V71A on cross band repeat

TM-V71A firmware update Ver.2.00 (May 16, 2008) added microphone sensitivity to the Menu (No. 111) so that MCP-2A is not needed to change it.
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2 votes

What's the pinout for "Kenwood" 2.5mm TRS/3.5 mm TRS connector?

FWIW: The Baofeng UV-5R HT supplies 3.3V through 100(*) ohms on the tip of the 3.5mm connector, not 5V as documented above. Also, the PTT is pulled up thru 10K to 3.3V, and the MIC+ connection line ...
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  • 21
2 votes

Setting up a Kenwood TM-D710G for APRS

I am setting up a B2000, a TH-D72 and a 710GA. The best practice is to set the APRS freq to 144.39 MHz in Band B then configure the data band of the TNC to B-Band. You can lock it as well. Kenwood ...
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2 votes

Kenwood TS-440SAT Change VFO Resolution?

Just give the knob a good flick in the direction you want to go. The radio automatically switches to 1kHz tuning when the knob is moving at a fast pace. Manual page 8, paragraph 22
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2 votes
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Kenwood TH-D72 Freeze on Splash Screen

I assume you have extensively bench tested the kit and have not found any problems. Having several years of experience with high altitude radios in the Alps, I would suspect that you are getting ...
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2 votes
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Does the Kenwood TH-D74 support Access Point and Terminal mode for D-Star?

The ICOM gateway terminal mode is a unique mode. It allows you to configure the radio to use the radio, tethered to a computer through a USB cable, to route the communications through the computer, ...
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2 votes

Connecting TNC-Pi to Kenwood TM-241A

It likely uses the external speaker output because not all rigs (especially older ones) have an RX audio output pin. And even if a rig does, it's possible that the audio output is before de-emphasis ...
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2 votes

Kenwood TS 520 S Meter accidentally run without an antenna connected

Unless you tried to transmit without an antenna, it should be fine. If the radio is in receive mode without an antenna, it won't hurt it. But if you transmit without an antenna, especially at high ...
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2 votes
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On the Kenwood TM-D710, what is the "D" on the B band?

According to the manual, it says "Appears while using the External data band", and all of the images of the display in the manual show it only appearing on the B band. However, menu setting (...
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  • 4,291
2 votes

How do I set up my radio for Echolink?

Echolink allows repeaters to be connected over the internet, and also allows licensed hams with computers to connect to the system directly without using a radio. So there are two ways to participate:...
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2 votes

Connecting a Katsumi Elekey EK-150 to my transceiver

In the keyer, PNP transistor Q4 should be on when the keyer is supposed to be keyed. I assume that the transceiver's key jack goes to a CMOS high-impedance input and has a pull-up resistor, and that ...
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2 votes
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Vara FM winlink with Kenwood D710g and DRA-50

I'm not quite sure why things worked in today's testing, possibly I was just in a dead zone yesterday. Here's the setup that's working though: DRA-50 is plugged into radio's "Data" port (on ...
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  • 359
2 votes
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Programming receive tone on Kenwood V71A

The tone values for Tone mode and CTCSS mode are stored separately in the TM-V71A. If you set the value when you set up for tone and then change into CTCSS mode, you'll be back at the default 88.5. ...
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  • 1,615
1 vote

Tuning to Aviation Band on Kenwood D-710G?

I never saw a viable answer here. Realize this post is a year old, hopefully it is answered somewhere. The solution is to select band A, left side by pressing the left volume control on the right ...
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1 vote

Does the Kenwood TH-D74 support Access Point and Terminal mode for D-Star?

No. The D-74 cannot act as an access point/gateway.
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1 vote

How to program Kenwood TM-742A 6-meter repeater offsets for 500kHz

To disable Repeater AutoShift turn the power off. Press and hold both the VFO and REV keys while turning power on. Do this again to turn Autoshift back on. The manual makes mention of using the SHIFT ...
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