rob, just to clarify; my radio doesnt squeal, i just dont want everyone on the receive end to hear my wife talking on the phone in the other room while im keyed up. LOL
D104's are straight pre-amplified mics. this means that the "gain" control is really just a sensitivity control. turn it up too high, and the mic feeds back.
IMO- the best way to set a mic like this is to turn the sensitivity up just enough to get the full swing from the radio. to me, its not really a preference thing; it is the correct sensitivity for my voice volume at the distance from the mic i speak at. you will notice this if you try it the way i do it.
while turning the gain on the mic up from 0, you will see its like, nothing, nothing, nothing, BAM! full swing from the radio.
turn it up more, and i can achieve the same level of "talk power" with the mic at arms length, its just that to do that on a straight pre-amplified mic, you have also made the mic sensitive enough to hear a toothpick hit the floor upstairs. (i sure love making these little jokes LOL)
turn the sensitivity up just enough to pick up my voice from a couple of inches away, and the person on the receiving end only hears my voice and not the cars driving down the street a block away. (LOL)
now, i do have to point out that my radios are not stock, and saying that i turn the mic gain on the radio all the way up is somewhat misleading, because depending on the radio, i may run it at half way or 3/4 of the way up.
my point is about how D104's work and why many times on the air when you are talking to someone who is using one, you can hear the fan on their linear at the same volume as their voice.
one guy here has been running like that for 10 years now, and he operates out of his garage. so he has like four fans going at once to stay cool.
he sounds like complete crap, but he is one of those people who is not happy unless every knob, pot, and tuning coil is turned all the way up.LOL
booty, what kind of audio mods did mojo do for you?
i know mojo and he is a good guy, and knows his stuff.
just curious what he did to open up the audio on that radio, as there are three or four different approaches people usually take.
just make sure that TR32 is not removed. it will make your
SSB sound like crap.
is the radio still with mojo?
if so, i can offer him some suggestions about what mods you might like, and you two can agree on them.
later, and sorry for rambling, LOL, i love to talk audio!
LC