I bought my 572Bs about ten years ago, 10USD for each one. After 50000+ QSOs, I replaced it about 3 years ago. Not bad for 30USD investment. I was heard the new 572B is not as good as ten years ago, that is only because the dealer (in US?) need more cheaper 572Bs.
All the best! David BA4RF On Sun, Dec 21, 2008 at 9:15 AM, WILLIS COOKE <wrco...@flash.net> wrote: > Ron, there are other considerations. The tubes available today are made in > China. I had very bad luck with two sets of Taylor brand 572Bs that were > made in China. One set never worked at all and the other set lasted about a > month. I am still using the 572Bs that I bought in 1976 used. So, if you > get one of the 811A or 572B amps with Chinese tubes how long will they last? > Am I extremely unlucky or did I ruin them intentionally as R. F. Parts > accused? I really don't know, but it certainly will weigh heavily on my > decision of what amp to buy. In fact, I just bought a used ALS-600. I will > see how well that works for me. > > Tuning is not really a factor for me. If you buy a "No Tune" solid state > amp then need an antenna tuner you have not changed things a lot. But, will > you need new tubes in a month or so? How long will you be able to buy them? > > Willis 'Cookie' Cooke > K5EW >
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