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So after installing schottky diodes in a cobra 29 ltd chrome, I get a loud buzzing noise from receiver and the meter shows a couple S points with the nb/anl on. With nb/anl off it sounds normal. I only get the noise with the chromes. I have installed in cobra 29 ltd classic, 25 ltd classic and...

So I have a 2016 cobra 29 ltd classic and when I turn the radio on it shows 4 watts without keying the mic and the tx/rx light stays green. I key the mic and the tx/rx light turns red and I have good modulation. I release the mic, the light goes back green and I still have 4 watts on the meter...

Well it's always something it seems like. I got a brand new 959b and everything worked, but didn't swing as much as other 959s. Anyway now I have no modulation, I still have a good carrier but no swing. Sideband is weak also. Turning the AMC inside radio does nothing, mic gain is up, tried a new...

How do you adjust the gate voltage on a cobra 29 ltd. THANKS!

Yes yes I am a dumbass and didn't have an element in the bird 43p watt meter and keyed the mic. what happened was d8 in a cobra 29 smoked out. I ended up replacing d8 d24, 1000 uf cap and still blew fuses. so I replaced stock final and all is good. so obviously no element in bird 43p watt meter...

Can anybody recommend a good spectrum analyzer for a cb radio? one that shows frequency and modulation. thanks

Anybody know how many watts a 8640 signal generator can handle? Say you are connected to the rf power output and accidentally key your mic. I wonder how much abuse they can take. And no I dont have option 003. Thanks.

Anybody know a good way to set up another radio to hear what your transmit sounds like? Thanks!

Does anyone know if after doing the swing mod in a cobra 29 ltd that it changes your transmit frequency? I am under the impression that it does but it doesn't seem like the swing kit is in the transmit frequency stage. Anybody have any words of enlightenment?

So I adjust the transmit frequency dead nuts on 27.18500 and when I check it later the fluke frequency counter reads 27.18485? I let the radio warm up and I hook up rf sampler to frequency counter. How much off frequency can you be and still be OK on am? Thanks

So I have a fluke 1910 frequency counter. I think it's a 1910..... anyway the way I have been checking frequency it to connect one alligator clip to ground and the other to the pin on the so-239 connector. So my question is how many watts can a fluke frequency counter handle? Like a scope you...

So I got this vintage VU meter that was from an estate sale. I popped it open and it looked like somebody did some work to it. I'm curious to ya'll thoughts and opinions.VU meter with the front 1/4 jack are hard to find and I'm curious to a good way to test one. I'm thinking of hooking up a 8...

Anybody have a simple schematic for a frequency standard to check to make sure your frequency counter is dead nuts? Thanks

What is the deal with L7, L8 and L9? They never end when you turn them and the are very touchy...

Anyone know the exact location of pin 6 on IC2? I'm pretty sure cobra used different ic chips and I'm not sure if I'm looking at the right schematics. I'm working on a newer cobra 29 ltd switch. Thanks!

So I got a new power supply a couple months ago and I am getting a reading of 25 volts DC on my multimeter when I touch the black probe to ground terminal on the power supply and the red probe to the front bnc connector on scope. I get 25 volts DC on scope, frequency counter and cover screw on...

What's the difference between a rf probe and an AF voltmeter??? Thanks

Anybody know what the 6 pins on a cobra 29 ltd ch.9 switch do? I know 2 are ground, 2 are hot and the yellow activates ch.9. I'm just wondering if there is like an input and output with the 6 pins. Like power comes in top 2 pins and out bottomed 2 pins. Basically what are the 6 pins for? Thanks

Can anybody recommend a good frequency counter to align a radio. Will this one do tekpower TP3165? Thanks

Can anybody be so kind and tell me where the driver is located on a cobra 29 ltd??? Thanks i appreciate it!