Are you planning on using the modulator with this amplifier?? ?If so a Single 4-400 will do 550 to 600 carrier and would be a good match for that 350-watt modulator for AM. It's a simple circuit.? With added Bias, you can run it in AB and use it on SSB.
C
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I would sell all your tubes and buy 1? ?8877.? Just my opinion.
Over the years I've collected parts to build an amplifier. Life got in the way during most those years but now I find myself with the time and ambition to build an amplifier for my boatanchors.
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As far as bottles are concerned I have a bunch of 813s a 3-400Z,. couple of 4-400s and of course the usual 811s, 807s, 6146s........Got plenty of iron for a power supply up to 3kv.
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Need some direction as to which way to go.? I operate 40 thru 10. Have a soft spot for AM. (yes I'm old) but do CW and SSB.
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Finishing up a 350 watt modulator.
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OR should I forget all this stuff sell it and buy an amplifier.
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don
