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A friend has a Palomar 300 linear amplifier when he plugs it in a recently installed GFI it will trip it so amp will not get power and work. The amplifier has been taken to my home and plugged in a regular outlet and no problem. Is the problem the GFI wiring or is amplifier not wired correctly...

I have 2 D&A triple Stage Phantoms and 1 Dual Stage they are nice amps and I use mine everyday. I find trying to tune a tube amp using a average watt meter a waste of time. Get a meter that reads PEP and it will be a lot easier. Just audio into amp and tune all to highest readings then back...

I picked up a Icom IC-746pro and as I am using the VFO tuner it skips numbers. If I mess with it I can get to channel frequency I want to. I have seen used VFO encoders on ebay would replacing encoder fix my problem??? I also read that these radios do have problems , it is worth the 125 dollars...

Thank you nomadradio.

I just picked up a Ameritron AL-80b amplifier today. It does not have a marking for 10 meters what can I do to use it on 10 meters.Thanks

LMAO come on down to 11 meters ham operators see how long you will last!!! All I ever see is ham operators complain about CB radio constantly. I have my ham license and 50% of the people I have talked to on 10 meters think they are Gods grace to radio and are just plain rude and it just makes me...

Sorry to disagree but the days of the sweep tube amps are far from over. There are plenty of used tubes out there to keep them going for 50 more years. Keep a eye on ebay prices but do not think that is what you will get locally. Ebay can be a big headache because of the crooks out there and...

nomadradio I am sorry the amp does have 2 relays and that is the picture of bottom of actual amp. I guess I had a brain fade moment just not thinking.

357 thank you I will try to check it and watch relays see if i can tell if closing properly. I have it on shelf will be done with old radio I am cleaning up then give it another try. Earlier I made a comment one relay i forgot the antenna relay. sorry guys. This is a really nice old amp and...

Naysayer I put amp back on shelf for a cooling off period for myself and working on old radio right now but I will get amp back off shelf and look at what kind if get any more ideas on what to do. It is a smaller type of relay but with flat style contacts on it. I took them partially apart and...

nomadradio yes that is the picture of bottom of amp and it only has 1 relay. I was just wondering since one contact point out of the 3 is I believe switching the high voltage got that from an earlier comment could I add another relay beside that one and hook it so high voltage goes thru all...

Nomadradio I cannot find a schematic for amp nowhere. The contacts do not look bad to the eyesight. I am sure you are right about it switching high voltage on one set of points. I wonder could i put another 3ptdt relay in it and just have that relay use all 3 contact points to switch the just...

Tubes ok so that was not the problem . The relay looks good and keys like it should but with a nice loud pop and spark every 3 or 4 key up. Beautiful amp any more ideas???????

I went with the Gizmotchy but added another element and made it a 4 element beam and I am so happy with the results. It has been through a Michigan winter with no problems and I seem to talk to anyone I can hear.

Checked blocking disc capacitors and they are ok not sure if I can increase value cannot find any info. I have been suggested to check tubes for a plate voltage short and doing that this weekend. thanks for the replys.

I have a apollo 500 linear amplifier that in hi or low power I get a pop and spark from relay when keyed. No power loss. I have cleaned the relay but did not help. Any ideas on problem. ??

I picked up a Triplett 3444-a tube tester it did not have roll chart holder or tube chart in it. I bought a book off ebay that shows operation and has tube chart but quite a few tubes not listed like 8950. Any opinions on this tester? The GM kob also does not zero but tester does work but so...

Well it has been since 2020 and I have 11 meter crystal installed and have been using it up on 10 meters every week . I really like this old radio it does all I need right now. Thanks to all for help.

Does anyone know where i can get a meter for my SB-200.? The one in it does not work and the cover is busted.

nomadradio you were right and radio was missing accessory plug at back that caused power to go to power tubes. I made a jumper after looking at plug on internet and all lighting up. I have manual and I am looking at it page by page to see if it is mentioned so far no. Now when I key mic I can...