Search results

Brandon thanks for suggesting to parallel the 5.120 as that works perfect made the 10kc dead nuts and all the channels 3-7-11-15-19 all become the a channels and if I add an expo kit all those missed will there. Also because it shifted up it gives channel 41 27.415 Still would like to try the...

I will give that a shot in a few BRB

here is a picture of the oscillator connected to my crystal/oscillator reader and it showes 5.1221mhz i will check it when its back in the circuit. Just gotta bend it a bit more for the full 10kc jump. If 5.1221 is giving me about 6kc i figure if I can get it to read 5.1242 might do the job

PM me your address and I will send a few i got 50 of them for $5.00 from china.

Thanks Brandon7861 Will be interesting to see what you come up with. Im going to take the kit out of the radio and hook up to my xtal reader and see what frequency its doing. Mose likely pretty close to the 5.120. When I sell all my kits I pre adjust them on my reader as close to the frequency...

I did try the 47pf and no change I know its the xtal as there is no adjustment. I use this kit all the time for single low channels for the cobra 29 sell them 10 kits at a time and when I put in a 14.910 xtal they trim great because I had the xtals cut that way. Dont know the specs on the 5.120...

The schematic you posted is the same as the picture of my Expo S kit single xtal for single band mods the post as i read says L19 could be L22 Ill see if I can post the radio schematic. The 29ltd gtl lx and NW and Weather are all the same. And now that I looked at the schematic it is L22 and not...

As in another post it says to cut trace on pin 10 of pll that generates the 5.120 frequency to L19 and it gets trippled there to 15.360. So post says to inject your own 5.120 and trim it to get the half channels. Like I said im half way there getting the half channels. I just cant trim the xtal...

im using a Expo 100 S kit oscillator with the 5.120 xtal in it. I think the xtals I got from AliExpress are just not the correct spec xtal as it will not trim much at all. Here is picture of the expo S Kits i use for single xtal use

Brandon7861. I have my oscillator board with the 5.120 xtal as I said does not trim much. So i have it injecting it into L19 with it disconnected from pin 10 on pll. Im getting about a 6kc in moving towards the full 10 kc and if i flip the toggle on my board it will close pin 10 back and back...

Hi Nomadradio. I tried the pin 10 where you cut the 5.120 signal to L19 and injected my own oscillator. I bought some 5.120 xtals from Ali Express and well I used one of my Expo S kit with the 5.120 xtal and it would generate the 5.120 signal but no adjustment in the trim cap to off set to move...

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?

nomadradio. do you have any info on how to do this mod? thanks

Nomadradio I know its an old post do you or anyone have this inverting pin 9 on the 2816pll in the cobra 29ltd radios. Looking to mess around nothing better to do. I took pin 9 low and radio is transmitting 40 below but not receiving the 40 below. Was wondering if inverting pin 9 will do the...

This trick involves taking the transmit/receive pin (#9) on the 2816 loose, and "inverting" the signal that feeds into it. Takes a DPDT switch, a NPN transistor like a PN2222 and three resistors Well Im just messing around as I do have many expo kits for the 29s and 25s and many other radios...

Thanks TM86 yes i have the expo kits for the 15.810 and 14.910. In post #2 someone mentions about inverting" the signal that feeds into it. Takes a DPDT switch, a NPN transistor like a PN2222 and three resistors. Have you seen this done or would you know of this mod? thanks

Anyone have any info if you can get the receive to work on the low channels by lifting pin 9 to go low to get the low channels? Main question is in post #2 thanks

I just saw an old post on here where it says The only "non-crystal" mod I've ever heard of won't move you down 45 channels, it moves you down 45-and-a-half channels. This trick involves taking the transmit/receive pin (#9) on the 2816 loose, and "inverting" the signal that feeds into it. Takes a...

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...

Thanks Loosecannon I will try that and report back here with an update.