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Hey guys, I have a cobra 29 ltd classic that has variable power. All the way down it goes to 1 watt. All the way up it shows 6 watts. When I drop the dead key to 1 1/2 or 2 watts and I modulate, it only swings to 3 rms. Peak it does 20. How can I get it to swing the whole 6 watts? What would be...

Hey gang, so I’ve seen some people building these power supplies for higher amp output out of those switching power supplies. I would like to build one for myself that has a 120a capability. I have 4 of those 30a switchers. Does anyone have some information/instructions on how to build one...

Hey guys, so I’ve got a 148 gtl that I need some help with. So on the power plug connector there is supposed to be 2 of what I think are rf chokes. One for the positive side and one for the negative side. Well 1 is missing. I do have spare ones from other radios but my question is does it matter...

Hey gang, could you share some examples on how you would perform this step in the transmit alignment procedure of a cobra 29 Ltd classic. Like the 80% modulation, what would that be? 80% output of the AF generator? What if your generator doesn’t have a percentage, how many mV would it be? Etc...

Hey gang, I was wondering if I could get some help on installing a vfo windup mod in a Uniden grant xl. I’ve done a couple 29s but can’t find any instructions on how to do it on this grant. A friend of mine wants it installed. Thanks

Hey guys, I have this little recorder I’d like to install in one of my radios. It doesn’t have instructions because I found it. Now I hooked it up to a power supply (6v) and connected a small mic element where it says mic and then connected it to a speaker where it says speaker and it worked. So...

Hello, I’ve noticed that my cobra 29 puts out a little more watts on channel 40 then channel 1. Also channel 40 draws more amps then channel 1. What do I need to do to balance this out? Also on the service manual, the pll alignment section says to check the voltage output but it doesn’t state...

Hello, I’d like to do a NPC mod on a cobra 29. Does anyone know how to do this or where I can find instructions. Thanks in advance.

Hello, I have another PC244 that I’m working on. This radio turns on and receives but when keyed there’s no power output and the S meter has no reading. PA works fine. Where should I focus on first? Thanks

Hey gang, im replacing the caps in a PC244 and came across some Polarized 2.2uf 25v caps. I can’t seem to find any on Digi-Key or Mouser. But I do have some Non-polarized ones. My question is, can I use the Non-polarized in place of the polarized ones and what kind of affect will it have if any...

Hello guys, I got a good deal on some bird 43 parts. Only thing missing is the coax to connect the line section and meter. I’m planning on making my own but I’m not familiar with the DC line section connector. Can anyone tell me how to install the coax to this connector. Thanks

Hello again gang, I have a 29 Ltd classic radio who’s noise level is higher then the signal level. The audio power reading is 3watts. I tried doing a receiver alignment and the sensitivity seems ok but the signal/noise ratio is way off. Is there an adjustment I can do to bring just the noise...

Hello again, while working on my radio a friend stops by and asked me if I could look at his Turner mic. I said sure, but I cant seem to find any schematic online that uses the LM386N IC. Would anyone happen to have one. Lmk thanks

Hey gang, so I just got this cobra 29 wx st and noticed that it’s been peaked. Looking in the radio I seen this: D11-cut L14 slug- removed R55-cut R100- cut and a diode added. Does anyone know what this mod is called and if there’s other parts That may have been change, added or removed. Thanks

Hello gang, So I’ve been seeing this mod done on some radios. A Cap connected to the positive and negative of the DC input jack. So my questions are, how much noise does it filter out and what is the value of the Cap? Will it filter out engine noise? Or is that a grounding issue? Sorry, still...

Hello, The Cobra 29 Ltd st TX alignment procedure, step 2 is asking for TX mode 80% modulation My audio generators don’t have a % output adjustment. How would I measure this? I have the sencore cb42 and a B&K 1040 that I’m using. Thanks

I have a B&K 1040 that needs to be serviced. I’m having issues with the O-scope output. Any suggestions/contact info. on a good repair shop? Lmk Thanks

Hello, I have a Bk 1040 that needs some servicing. The output for the O-scope is having some issues. Any info on some repair shops will be very helpful. Thanks

So I’ve been watching a few vids on the tube and noticed that the meters on their radios are swinging like it’s on ssb when it’s on AM. Like all the way to the wall when they modulate. How is this done and why? Is it a type of Mod?

Hello, Just got a uniden pc244. Rx works but when transmitting, the frequency at the antenna is way off and doesn’t stay consistent. (24.4???) Checked it with a tenma 100Mhz freq counter and on a sencore cb42. Same result. What could be causing this? Please help. Thanks