On Oct 4, 2010, at 11:24 PM, k7fm wrote:
This is in response to Eric, wanting to add an amplifier to his Icom 703+.
Eric, there is a major problem. The Icom 703+ is a qrp rig, with an output
of 5 or 10 watts.
At the power level , you may be better off building a 5 - 100 watt solid
state amplifier - but you will have to learn about solid state circuits and
building.
73, Colin K7FM
Maybe a bit less of a learning curve would be an AB1 grid driven amp.
6146's, 1 or 2 or 3, 4-400, 4cx250's to 4cx1500.
My first amp was a pair of 4CX250's with a Central 20a at 5 watts out. My high
school buddy was doing a 4-1000 with a 20a.
And as the old guys did, when you get a fancy 100w driver, swamp the grid or
ground it.
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