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Radio is rated 100w so SSB where the amp will be used it will be pushing 60w to 80w peak im guessing

So im still waiting for these 572B quad set of tubes to arrive, what wattage cab I expect to get out of new tubes?

I just ordered some 572b tubes for the Ameritron AL-811h amplifier through Penta labs. What a great company to deal with and even offered fair pricing to ship them to me. I also found out that Penta labs now own Machlett tubes now and they are in their words...very similar tubes to the Penta...

Has anyone heard or know of the quality of Machlett tubes, their website says they are owned by Penta labs so I would imagine they are from the same manufacturer? http://machlett.com/history.html

thanks for the link I have sent them an email, im in Australia so checking if they will ship to me

I have sent Penta Labs an email, to make things a little more difficult im in Australia so I need to make sure they will send to me, thanks for the lead

So after reading forums and suppliers product descriptions Ameritron dont disclose where they get their 811a and 572b tubes from and its a lottery on what you are going to get supplied in your new amp. There is no stocks of many of their tube amps and delivery seems to be slated sometime between...

Hello all, I have Ameritron AL-811h amplifier (Quad tube) that I picked up. The tubes installed are 811a which are down on power, well used for many years. I would like to change to the 572b tubes but finding a good tube at a fair price seems to be difficult. Most major Ham supply shops seem to...

so after a little rooting around the pre amp is very noisy on my 5 element beam. When using the 1/2 wave station master it seems to work well or how it should.

Got a hot deal on a TS 667v Turbo mod. Seems to work ok, being new to amps dont have much to go off. I do have a 203p The problem is when i switch to pre amp the noise is horrendous. Its not just loud static but seems to be static and splatter mixed together. Its so bad it drown out weak...

I worked it out late last night, wrapped wire and insulated the beam radials to the boom and bingo, Shockwave dropped to 1:2:1 which could be tuned further im sure but no use. I went out and go a 1/2 wave station master that does not have radials and in the process of installing that. Hopefully...

looking at the pic, the mast sits nearly hard against radiator 1 I think it is, the one that the balun connects to

Yes thats the exact beam

Have just installed my 45 foot tower I have a 5 element TetEmtron beam and a 5/8 ShockWave vertical. After speaking to the manufacturer of the ShockWave he told me remove the radials (4) and drop the shockwave down close to the beam using the beam as the radials or ground plane. So after doing...