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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 ...
hobbs - KC2G's user avatar
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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 ...
user3486184's user avatar
  • 1,957
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 ...
Kevin Reid AG6YO's user avatar
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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, ...
tomnexus's user avatar
  • 11.3k
4 votes

Advice on keyer: two paddle on old Kenwood with 'straight key' only

In my experience radios are generally keyed by grounding the tip of the key jack. The tip will be pulled high by a resistor inside the radio, to 12 V or maybe 5 V. Other arrangements are possible; I'...
tomnexus's user avatar
  • 11.3k
3 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:...
rclocher3's user avatar
  • 9,242
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. ...
rclocher3's user avatar
  • 9,242
3 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, ...
Glenn W9IQ's user avatar
  • 18.6k
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 ...
Brian K1LI's user avatar
  • 7,858
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 ...
Kevin Reid AG6YO's user avatar
  • 24.6k
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-...
Bivviboy's user avatar
3 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 ...
wpns's user avatar
  • 31
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 ...
Edward Anderson's user avatar
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 ...
Glenn W9IQ's user avatar
  • 18.6k
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 ...
Duston's user avatar
  • 939
2 votes

Kenwood TH-D74 VOX on D-Star

OK after a couple of weeks I just stumbled onto the answer! Basic Vox only works if you have squelch turned on to at least a minimum setting.
user11332's user avatar
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 ...
rclocher3's user avatar
  • 9,242
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 (...
Scott Earle's user avatar
  • 4,599
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 ...
user10489's user avatar
  • 6,455
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 ...
Brad Mace's user avatar
  • 421
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. ...
user3486184's user avatar
  • 1,957
1 vote

Kenwood TH-F7E power supply troubleshooting

I suspect you have a plastic brick. Unless you have the skills at working on surface mount pcb, like a steady hand and good magnification lens or video microscope, needle probes (easy to make) and ...
user18104's user avatar
1 vote

Kenwood TM-D710E in packet mode: does not transmit

Found out what it is. Something really stupid. Before I had a TNC-PI. That TNC-PI modem just starts sending as sook as it gets data. The Kenwood on the other hand checks for a signal on the waves. If ...
Folkert van Heusden's user avatar
1 vote

Viewing current frequency on Kenwood TM-281

It doesn't look like it can be done quickly, but you can change the settings to display the freq instead of the memory name. From page 32 of the manual (available from the Kenwood website): To ...
James NF8I's user avatar
1 vote

Kenwood TH-D72A and AO-91/92

This might be crazy, but you were on the TX band when you attempted to TX? You should have continued to hear the downlink of you were. Sinfulness it is the simple things. Also, if it was during the ...
wag's user avatar
  • 19
1 vote

Connecting TNC-Pi to Kenwood TM-241A

As you have speculated, the wiring diagram you show is not correct for the TNCPi. Consult page 10 of your TM-241A user manual for the pin-out of your front panel connector and page 10 of the TNCPi ...
Glenn W9IQ's user avatar
  • 18.6k
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 ...
W9WEP's user avatar
  • 11
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.
user2104506's user avatar
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 ...
John Etling's user avatar

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