Recent content by dss56

NZ8N Dont think i can do that here because any of the 8 channels repeat as long as ground is present. I need something when the mic is keyed a channel will see ground and then go high while the mic is keyed so when sound is finished person can talk. Un key the mic then keyup and start the cycle...

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 would use it on ssb Brandon what do you recommend for a blocking cap? I dont have the service manual for this radio just the mic wiring and pin 1 is the audio mic. Having dc voltage on pin 1 will explain that 3 different echo boards had problems. Im putting this in a small plastic box as I...

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...

I would say dont bother and like u said just use an Expo S kit for the 25s channels or an Expo A kit for the 29s or an N kit for the Cobra 29s but the N kit only gives you the high channels ch 41 to 28.045. Im sure some where this mod is documented and was used way back. Thanks for trying to...

Cable Guy Thanks for the update and hope you will have luck getting it to work and document the mod

Thanks Cable Guy for the post wish there was a write up post or directions of the resistor values and the transistor and the switch wiring. Interesting just to try on a 25 and 29. thanks for the post.

Thanks Nomadradio for the info

If you need xtals for this J-code radio I have a kit that will go to ch 55 and 23 ch below then also all the missed A channels RC missed channels and any missed channel on the added channels. Message me for more info if u r interested.

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

thanks for the chart. Im more so looking for the low chart as a friend wanted to know if he would get 26.915? And 26.895? hope someone will chime in

I have the pll mod info just wanted a channel chart.

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...

You can use an mc14506 pll with adapter board and works well also for extra channels more than the mb8719 will give.