Search results

Especially suspect are the ones rated at 10 volts. Like loosecannon said, it returns the radio back to new. I have a Uniden PC122 and an RS HTX100 both had some old 10v caps that had outlived their usefulness and caused transmit problems. I recapped them both and they work GREAT now.

I've never fooled with a 2000, Grant, or 148, I do have a President Washington (3 button) and I think its receive is quieter and as sensitive as my 2547 and 949. I think the Galaxy/Ranger receivers are noisy; the signal is there but it gets tiring listening for it.

I think Moleculo is right, it's a Cobra 29LTD w/ lighted rings around the knobs. It's nothing different inside, all of the alignment points should be the same.

Well, they WILL be on the same frequency, now whether that's the one you think you are on... well that's a different story. Yeah, you should align afterward.

Once you unlock the clarifier, your transmit and receive frequency are tied together. You should be transmitting and receiving on the same frequency.

Yes, that is true.

I worked on one that was missing channels 1 through about 19. It seems that someone had wound L20 all of the way down to the bottom where it was stuck. Luckily I had another one in a parts radio. Once I got the PLL voltage set right, the radio worked like brand new. Now, it still didn't look...

Now that's funny right there.:thumbup: ... but sadly enough it sounds like it might be the key.:pop:

I think that would be the real kicker. The Uniden boards were what made radios of that vintage what they were. Today you just can't get that quality in a citizen's band radio, or an "export, 10 meter radio" for that matter. The RCI boards are "OK", but they are not as rock solid dependable as...

No doubt a GREAT find for $10. I am not familiar with the installation of the RFX75, but you are right VR10 and VR12 are there for biasing. MOSFETs like a little voltage on the gate hence the fixed value resistors in your 929, it helps with the dead key. Look at the service data on CBTricks...

I think the photo show exactly why you DON'T want to jumper it. There's a diode there for a reason.

I don't see why not. I have seen something similar to this only with a Galaxy 959 and a 2970 amp section. I really don't know the particulars, but study how it was done in the 2970 and adapt it to the 29.

Yes, but the P5/P6 mod is way more stable than a channel kit and much easier to align afterward.

Well hopefully Sparky will get it all fixed up for you. It sounds like there was an issue with the electrolytic capacitor in the roger beep circuit. It just sucks when you wait with great anticipation for an item, only to be disappointed when you have to send it back.

Probe one of the pads in the back right corner (next to the final) as you look at the solder side with the front of the radio to you. It has to be close because the resistor isn't too big. This is a Cobra 29, but you get the idea.

It sounds like you have answered your own question, you need to add more bias voltage. What I do is find a 12v source, put a 100K (because that's what I have) variable resistor from the 12v source to the gate, adjust until you get the voltage you are looking for, remove the variable and test...