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So i have a audio module that I bought has 8 channels that can record and play back voice or music using just a onboard mic. The module comes with a enclosed speaker and has 3 AA batteries inside and plugs onto the module to supply 5 volts and a speaker. record audio is great and also recording...

Along the years many frequency counters have been sold out there. There were regular ones with the so239s in back and some with the so239 and a antenna built in so you can use without jumper cables. Would anyone have a circuit or directions on a way to make or add an antenna on a frequency...

nomadradio Yes I know its in a trippler circuit for the xtals. Funny how all radios are made different in the crystal circuits for ssb radios and also Am radios no standardized simple circuit.

I sent you a message with contact info

Here is a new kit I designed with relay switching to keep the frequency stabilized no drifting. Will work with mb8719/mb8734 11.1125 or 11.3258 xtals. crystals freqs you need are 11.2625 high and 10.9655 for low with the 11.1125 xtal. remember to use trim caps and use a choke to lower the...

Would anyone know what other manufactures us the same board as Galaxy 959 2547 949 939 PC board, I know there must be some other radios that are the same. thanks for the help

Yes the 15.360 is the loop down mix crystal Same as the cobra 29s and yes the 858 861 pll radios. I'm more so trying to see if the 14.910 and 15.810 are the correct frequencies to add 80 extra channels thanks

Hi have been searching the web for some info on channel mod using crystals for the Galaxy 959 and such radios that use the same pc board or pll configuration. Some info I have is that xtal 3 >15.360mhz is the one to change and either add a 15.810mhz for high or a 14.910 for low channels would...

Next radio is a connex 3300HP Radio has no tx and rx. There is audio in the speaker but no rf what so ever on a watt meter. There is also no reading on frequency counter. Like the pll is out of lock nothing and of course someone was in to the radio can tell the vco and other cans moved. So...

So i was able to fix the radio 100% and the echo board is working also. What i did was follow the schematic center out of the mic gain in front and feed the echo board and now radio has audio and echo with all functions. Something in the front face plate most likely a broken trace/wire. On to...

Im sure you are correct I think its the dimmer switch and the shrink tube is one with glue in side so Im going to let it stay. I was able to get the audio work by bypassing the echo board. On the schematic without echo board the center of the mic pot feeds resistor 202. So I jumped that and no...

Well i just did a bit more checking and audio is getting to the mic gain pot and back out to the Echo bd. With audio trace good clean audio and if I put the echo on that works also. Getting audio at all 3 red arrow locations Not getting any audio in the the rf signal power out. dont know what...

Just thinking that it might not be Q53 or 55 because im not getting audio to the in of the IC7 BA4558 mic audio chip. I would like to try to bypass the echo board but no schematic on how its wired in.

Well I did some detective work and no good results. I checked the mic input and good audio. I went over to the IC7 BA4558 and no mic audio to the in on both channels and of course no output. I checked the mic audio right in the front panel and a few components but looks like the front panel will...

Superlid Thanks I see that in the block diagram will check ic 7 out and then the 4 trannys. So this radio uses a separate chip for receive audio then a chip ic 7 for the mic audio. Older radios always used 1 chip to control both. Thanks again will check tomorrow.

I have a Galaxy DX929 AM radio. There is good receive Audio and good tx and rx. There is no mic audio and no pa audio. If i key radio about 3 watts and turn on a radio next to i can not hear any audio when I keyup. If i turn on the echo and then key up I can just faintly hear the mic audio...

Nomadradio. Well I had some adapter boards that I was able to shift pins 17-9 I grounded pin 6 and then a 5.1 resistor from pin 17 to ground and then the toggle to 5v plugged into a washington and nothing. I made sure of all my shifting of pins and pin g and 17 and got nothing. So im back at...

Nomad radio. thanks for the info. Do you think i will be able to keep the channel mod working still if i swap the pins out?

Hi all Im back at it again with some questions. This kit i have installed in a pc-385 RS trc 490 same a s a washington and other radios is working good range is set to 28.045 to 26.495 vco limit of course. See pictures of the board with the MC145106 pll replacing the mb8719 or the mb8734 will...

Thanks I sent a message to them.