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A ham friend of mine gave me one of these a week ago (Baofeng UV-3R), he got it so cheap he just let me have it, he has a couple more. I have to say, though I was real skeptical at first, because it's chinese made or whatever, but after using it for a week, I can't believe it only costs $50...

Ive only used 10 meters in HF so far, but I find it quite enjoyable making DX contacts to remote islands in the middle of the oceans, and other rare stations, it is fun, some good chatting going on sometimes. Probably a lot more chatting going on down in the lower HF bands, I have listened...

LOL I know, I only work on it for a little while at a time. I have made a lot of progress since I started on it, SSB now works great and I have gotten the tuning decent where I get full power on SSB across the whole 40 channel band now, and the modulation circuit on SSB is functional, but the...

For some reason, I have low resistance (almost a short) across the spot in the back where one of the large 16V 1000uF caps goes next to the audio chip. Reads like .017 on diode test either way with the Fluke meter. That shouldn't be like that if an electrolytic cap is across those two pads on...

Was really hoping someone can suggest replacements for the parts listed above. Update on this radio, still haven't check the driver/final bias, but I have rotated every which way and it doesn't really affect anything, will see if I can drag my oscope out to the radio shack from my shop tonight...

Pretty cool thread here with the President radio pics and facts etc... Reminds me of the old days looking through the catalogs at radios I couldn't afford, LOL. I still have a bunch of those old catalogs in storage somewhere. Last night a friend of mine picked up a Grant (export model) from...

Mine had the same on the final, I still have the PARTS and can ID them for you, but I do not know where they went, I should have taken pics... LOL... Surely someone does know, I could use the info as well. Someone please pass on the info, thanks.

Another transistor issue I have noticed is that pretty much all of the transistors in this radio are obsoleted now. I see replacements for the regular BJT types, but what about the Fet/JFet types? Are there replacements for any of the following should it end up needing one: 2SK68 3SK45...

Thanks 399. I will do what you suggested. As far as the 945 and 733 replacements, will these work just fine? I think I have some already: KSA733 (Fairchild) KSC945 (Fairchild) Look like good replacements. Anyone know of a good replacement for the 2SC1675 other than the overpriced 2SC2999...

Anyone know for sure if the following parts sub good: 2SC945 (obsolete) = Fairchild KSC1845 ? 2SA733 (obsolete) = Fairchild KSA992 ? Thanks.

Will check the Bias, tried adjusting it blindly just for kicks and it made no difference either, it may not even be getting any voltage to the Bias pots, will see... Any ideas on those other "mods" ? I am going to start putting things back to factory in it today and see what happens.

Okay, so I have this old Navaho AM/SSB base station. First thing that was wrong with it, was that it had a NTE236 as the driver transistor and a 2SC2166 as the final output transistor. I removed the NTE236 and put in it's place a tested working 2SC2166 and where the bad 2SC2166 (supposed to...

Is it one meter or two? In an earlier post you said "a set of meters". That would imply there is more than one, but looks like you just have one for sale. I might be interested in it, lemme think about it a lil more...

I don't think they were Tetrodes either, I think they are Beam Power Pentodes.

I think some of the tubes are good for 150-200 watts each BTW. As you know, 500 watts to 1000 watts is not that much difference on the receiving end, so getting 500 watts from 4 tubes that can be had as low as $19 each is not a bad deal I think, of course you'd need to find the right plate...

Nah, I wasn't missing ANYTHING, I had noticed alot of people running those "guitar amp" tubes in their old school amplifiers with great results. Perhaps the actual application pans out better than the theory as things do come out that way sometimes.

I have a M103C, I purchased it new back the in 90's, it still works, but ditching it for a M104C or a homebrew 5 Element on a short boom (16 foot boom). With the Beam on Vertical, sometimes stations heard me exactly the same on the M103C vs my Maco V5/8. Sometimes they said the 103C was...

The meter on the front of the amp should be a plate current meter, if the plate current is going "up" as you talk, you should see forward swing on the meter, if not, try a different wattmeter, some of those old ones I have seen don't show forward swing unless you got a TON of forward swing (like...

Lots of times when "new guys" install antennas for first time on headache racks they short out the center of the mounting stud (the part the antenna screws onto) to the grounded headache rack and that's your problem. Make sure you have the little plastic spacer that goes around the center stud...

You talking about the meter in the radio is not "moving". Probably just stuck from sitting up. Take the cover off and tap on the meter a few times, may free it up, if not, may need a new meter, you can buy them online at Copper Electronics I think, or just rob one from another radio...