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So I have a sound module that is 4mb storage not much about 3 minutes of time. Module has 8 channels for playback if set up for mp3 player. And thats how i have it set up. Problem is if you ground any of one of the 8 channels the channel will activate when ground is applied. 2 ways to set up...

I know its a ham radio but modded for 11 meters I have a Kenwood 440TS AT modded for 11 meters. I use the MC60A desk preamp mic. Im wanting to add an echo board/box to the radio and having problems. 3 different echo boards all work on cb radios but not this Kenwood 440. So I have a small box...

I have a Kenwood 440TS AT modded for 11 meters. I use the MC60A desk preamp mic. Im wanting to add an echo board/box to the radio and having problems. 3 different echo boards all work on cb radios but not this Kenwood 440. So I have a small bot to put the echo board in. I added an 8 pin mic...

Is there a good location to hook up 1 of the Chinese frequency counters to a Classic Cobra 29GTL or a LTD to monitor the channels that has 40 above and 40 below channels. thanks for any help

If anyone has done the channel mod on either of these radios Robyn executive 240 or GEMTRONICS GTX-5000 both radios have the MSM5907 pll to do channel mod, Im looking for a channel list after doing the mod. Supposed to get uppers and lowers and would appreciate if someone has a channel mod list...

Anyone have a simple variable power mod for a cobra 2000gtl. Radio keys now at 5 watts to 10 watts on am. Want variable so I can tune back to 3 watts to run a Texas star killer bee 250 variable amp. Was told to use 3 watts or less for AM drive.

Is there a 10KC mod channel jump to get the missed A channels? I have searched the web and found a few ideas but do not work.. It the upd2816 pll thats in these radios and many other models. Would anyone have any info for the Cobra 29LTD and GTL 40 ch radios?

Been messing around with the 29ltd for low channel mods with the 2816 pll. I have all the expo kits for these radios and all the xtals for 40up/40dn. My question is on the pll 2816 i isolated pin 9 and got all the low channels 26.950 to 26.510 all half channels. I can easily fix to get back on...

Where is a good point to add frequency counter to read the constant transmit/receive frequency. Would TP1 be a good point through a .001 cap. Using 1 of the 6 digit Chinese counters from ebay. thanks

So i received a 148gtl to add extra channels. As I always do I check out the radio first. radio has been recapped radio off frequency. Fixed AM great power and clean audio. LSB and USB has the dreaded dirty warble audio. I cant lower the ssb power vr11 does nothing. Also cant lower the AM...

What is a good replacement for this 2SA733 TRANSISTOR What have you used. thanks HAPPY NEW YEAR TO ALL

Would anyone have a Galaxy N channel kit with directions they will not be using. Or the board design so I can breadboard one. The N kit is used for the 146gtl or the pc122 ssb radios and others that use the same pc board. Here is a picture of what the board/kit looks like. Willing to buy one...

So i have been using this little circuit for over 10 +years and i even have it submitted in a Secret cb volume. Its for the mb8719/mb8734 pll where you cut trace on pin 16 so you can get the A channels 3a 7a 11a 15a and 19a. Also on any channel mods it will fill in the missed channels. The...

Here is my web page and youtube link. If interested on anything please private message me for availability/price and shipping. *We sell noise toy boxes and modules *channel kits *tweety bird boxes and modules *4 minute record watergate boxes web page https://www.dj56cbsales.com...

Well put this radio on the shelf about 3 months ago and now back trying to find out why LOW AM output of 2 watts. The radio is all stock SSB power is 15 watts the AM output is only 2 watts no matter what I do to tune the radio. Also seems the bright/dim on the radio does not get that bright...

So I have done plenty of the 959 channel mods and they are on 4 different sections 27.965-26.665 close enough. I know about the viagra boards-not made anymore. So i have been reading someones post I saved and seems you can use a oscillator board to add the standard 40 up and 40 down. use the...

So i got in a Cobra 2000.gtl it had a roger beep and a train noise toy. I removed them and had to rewire the wires back to the mic jack on the radio. I have a Turner +3 and a Turner super sidekick desk mics. both older 5 pin connectors. Tr24 was removed in radio but I replaced it back removed...

I have a cobra 29LTD lights up bright dim works Green receive Led and red Led work when mic is keyed. Radio has no receive no transmit and I tried next to a radio to transmit dead cold and i tried to transmit a radio and to see if i had any receive cold dead. No voltage on any pll pins at all...

course. fine removed the brown from fine vl. remover yellow wire from the cvl and to ground removed D52/D44 RED WIRE TO 8V CONSTANT. RADIO WILL NOT ALIGN FOR TRANSMIT/RECEIVE. COUNTER SHOWS 1 frequency and will transmit off frequency. tried a few different ways and same problem. So i put it...

Has anyone seen these kits before? Im trying to get directions for install in radios. It says can install in a cobra 29. Kit has 4 wires thats all I know. Shows many more radios. The board has no xtals on it so wondering how this kit will work? And comments appreciated