Questions tagged [microphone]
The microphone tag has no usage guidance.
4
votes
1answer
417 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
70 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
458 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
230 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
480 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
260 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
2k 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 ...
7
votes
1answer
888 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
666 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, ...
8
votes
2answers
3k 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 ...
