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Questions tagged [microphone]

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1answer
27 views

How to use HT microphone with two jacks (Kenwood connector) as a substitue for KX-3 microphone?

The original microphone for KX-3, Elecraft MH-3, is insanely expensive. What changes would be necessary to convert a cheaper speaker/microphone for a FM handheld transceiver? Is there any ready-to-buy ...
0
votes
1answer
43 views

Using Gaming Headset on FTDX3000

It seems like a gaming headset is a cheap option for my radio, considering I have a 3.5mm to XLR adapter, along with an adapter for the Yaesu mic input (from XLR). However, what I'm not sure about is ...
2
votes
1answer
162 views

How do I put an RJ-45 connector on to repair a Kenwood MC-59 microphone cable?

I've got a Kenwood MC-59 microphone, which started fraying around the place where the mic cable goes into the body. I thought I'd cut it off and put a new RJ-45 jack on it. After cutting the cable, I ...
0
votes
2answers
87 views

VOX mic that emulates PTT

I have a radio that does not support VOX, but then I got the idea that there might be a VOX mic that sends the PTT when VOX is activated? Basically a mic that will "push" the button for me. Does that ...
5
votes
1answer
955 views

How do PTT buttons work?

I'm really new to this, and I was wondering how the whole PTT system works? I have a headset with microphone, and a Baofeng UV-82 radio. I know the radio has its own PTT button, but is there any kind ...
3
votes
1answer
93 views

Is a connecting computer sound output equivalent to connecting a “dynamic” mic?

I bought a Kenwood audio breakout cable having only the kenwood connector (3.5mm and 2.5mm-in-one) on one end and up to me to add connectors on the other side. It came with a nice diagram for how to ...
1
vote
2answers
715 views

MIC microphone ground vs common (PTT, chassis etc) ground

How do we reconcile the ground connection between audio eqp (TNCs, soundcards etc) and transceiver? Most of the audio eqp for digimodes has only one ground. I've seen that the common practice is to ...
1
vote
1answer
262 views

Old Yaesu FT-470 HT audio feedback with external speaker mic

I have a generic external speaker mic with the two-pin connection (1x 3.5mm, 1x 2.5mm mono jack), which doesn't work with my FT-470 (no real surprise, figured I'd just mod it.) I've started the mod, ...
3
votes
1answer
616 views

Mic ground vs ground

Why do most radios have a microphone ground as well as a Ground? I have found that simply using one ground and tying the microphone as well as the PTT (and audio out, 5v out or whatever else is in ...
5
votes
3answers
316 views

Will Icom HM-133 work on IC-2800H

I have been having problems with the knock off of Icom microphone so I figured I would bite the bullet and get a new Icom microphone, since the original is out of production. I found that HM-133 looks ...
2
votes
1answer
3k views

Baofeng UV-B6 transmits no audio

I have this Baofeng UV-B6 (the same as B5), and after using CHIRP a few times, transmission stopped working. In fact, it starts transmitting, but no voice is sent whatsoever — dead carrier. RX works ...
8
votes
1answer
1k views

How are DTMF tones sent through a mic?

In the following diagrams, a microphone pinout is shown for several radios which have DTMF mics that work with them. How is DTMF sent to the radio without a pin designated "DTMF"? Is it through the ...
5
votes
1answer
868 views

Is the Kawamall DMTF 6pin microphone usable with the Kenwood TK-805D radio?

I have a Kenwood TK-805D commercial radio, which I am using for UHF ham operation. For repeater usage, with AllStar, IRLP, and Echolink, I need a DTMF mic for it. I did a search on the internet, ...
10
votes
2answers
4k views

What is the expected microphone input voltage level of a handheld transceiver?

Ok, so I'm looking to inject some computer generated CW into a little handheld rig by wiring direct into the mic input line. What sort of voltage is expected on this input, are we talking uV, mV or ...