[AMRadio] FS: Dual 4-400A LINEAR AMP 2KW


Brian Carling bcarling at cfl.rr.com
Sun Nov 20 16:07:33 EST 2005


FOR SALE:
Beautiful Homebrew 4-400A Pair Linear Amplifier - 
excellent shape.
Here is a self-contained desktop 2000 watt linear amplifier for 
80-10m.
Uses the tried and true combination of TWO 4-400A EIMAC 
tubes.
Comes with complete documentation and the original article 
from which it was built.
Has VACUUM VARIABLE plate capacitor. Full metering of 
BOTH TUBES grid current
(switchable.) Also has meters for 3000V Plate Supply Voltage, 
plate current,
and RF output. Needs AC fuse holder replaced and one 
resistor is broken.
Everything else checks good and the power supply is tested 
OK.
Cabinent is thoroughly shielded inside and out. Hinged lid for 
easy access.
Comes with a schematic, notes, and the complete, detailed 
construction article.
Wired for 120V AC operation and comes with locking power 
cord.
Spare (NEW) Eimac 4-400A available with amplifier purchase 
for $50.00
New tube alone for $75.00 plus shipping.
Available for $350.00 plus shipping (Heavy)

See:
http://www.af4k.com/radios.htm
Additional photos on request.



More information about the AMRadio mailing list

This page last updated 24 Oct 2017.