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I have a used President Andrew J. that is great shape in all other aspects except that it will not receive on channels 1-6; but it will transmitt on all 40 and receive on channels 7-40. I would love to get this radio functioning properly. The board number is a PC-417 and any help would be...

I have some of the equipment to work on the SMT and Red Ranger is either a lab repair tech or just blowing smoke because it is very difficult to repair the SMT radios and my Pace soldering/desoldering station is well equipped for it but my eyes and especially my hands have a hard time staying...

I will have to say the part your you have a pic of is either the audio chip or the volatage regulator. It is possible for this part to get warm and be operating ok, but if it gets so warm that you cant touch it then that is another thing. Do you have any cold spray around or at least a can of...

If you have some soldering experience and a bright LED light then you could try to troubleshoot this radio on your own. I cant find the info but I will assume it is a PLL for the fact 1. it is a 40ch(but not always the case) and fact 2. only 10-40 are being affected where as a crystal driven...

The typical hum you guys are hearing is from the transformer in the tin box is also a problem with some Cobra 29 NW radios and I have found that it was even noisier on the Galaxy models. Truthfully Gecko I would just send it back and eat the shipping charges one way to Galaxy unless there is a...

I have several friends running 23ch radios and I myself run one of the 7 that I own just for fun. I have a Midland 13-888b(made by Uniden for Midland) that is a great radio, I have a pristine and brand new Cobra 29A(made by Uniden for Cobra) and a spare Cobra 29A that has a custom cb faceplate...

It has a cool display and a host a nice features which would come in handy, but here is the problem-it has to be a SMT board to have that face and all the features included and that will cause a lot of headaches for techs and anyone who wants to mod it. I will be just like any other SMT board...

Like I said the Pace line may be expensive and not for everyone, but just as Captain Kilowatt said if want reliablility and dead on accuracy which can be very crucial in certain applications then the use of a Pace equipment is one of the best. I did not purchase mine brand new and have a total...

Pace soldering stations are the very best and if you work on electronics on several occassions a month than the investment will be well worth it. I used to buy the less expensive RS brand and then bought a Weller EC2002M with a 1201A handpiece and it was what I thougt a good soldering iron...

dudmuck I stand corrected and the above transistors are silicon based and the 1969,2166,2132 are bi-polars but are silicon based as I stated. The issue was heat and what I stated was true, and the IRF520 may not have be designed for rf power stages but they are using them and they will continue...

mchaos the original set of RFX that came out with no pre installation check list and it was hit and miss on figuring out the problems. Your dk is way to high and what voltage are you running it at. Either your meter shows happy watts or something is off because 150w is an unrealistic number for...

If you want an extremely versatile and extremely professional soldering iron then look at the Pace group of soldering irons and desoldering stations. They are quite pricey but you get what you pay for. I have the Pace ST-115 and has the capabilities of switching out for many, many different...

The Jerk that is the only cap in the mic so it has to be the one that is bypassed. You can always put it back in if it doesn't work. Your cap looks like the one that I had and made my RK56 sound like crap.

psycho it is a simple question and no reason to down some ones choice in a radio of which I own several. The answer is no you can not mod the Cobra 25/Uniden 66 to have the ch. 9 switch go to 19 as in the case of the Cobra 29.

Mosfets are very sensitive to heat and high swr's much more so than the silicon based 1969,2166,2132 and will not tolerate running them very long when they are above 2-2.5. The best case is to run the radio with swrs at 1.7 or less and have the proper gauge wire and power supply feeding the...

The reason it could be longer or shorter is the location from your radio to the weather TX station and maybe you only caught part of the alert; so most likely it is the weather either doing a test or there is sever weather in your area. Some WX stations are much stronger to your location and...

First of all which radio did this come out of and then we can possibly recommend a replacement. If it is a 1969 I would venture to say it is out of a Galaxy,Ranger,Connex and the sort. Give us the make and model and then we can say which is best. The mosfet is cheap and requires some good...

I have dealt with Al at Sparky's many, many times and he is one of the few I would say that would be honest, straightforward and no bullshit. He doesn't sell someone something just to make a profit; but to make them happy in their purchase and to bring back those happy customers. He has always...

C8 is a silver mica cap, this is the newer version that they supposedly fixed the heat problems from the older versions. The mod sheet for the 25 does not show replacing the caps around the voltage supply, why? And is this the problem that the 1000uf 16v caps cant keep up with the RFX, and I...

I have a problem with my install of an RFX-75 in a Uniden pc-66xl phillipines radio. I used the Cobra 25 install and this is what I got upon first key up. It didn't have a Dead key and when I talked into it had nothing on the meters. I then put my headphones on and keyed down for several seconds...