[Amps] hf-2500 again

K1TTT K1TTT at ARRL.NET
Sat Apr 20 10:33:08 EDT 2013


Ok, got parts in and replaced most of the bias circuit.  Now I have 9.7v on
the cathode on rx and 8.7v on tx.  Would those be reasonable for bias when
cutoff and tx in ab2 operation for the pair of 3cx800a7's??  I have a
feeling the cutoff voltage is a bit low as I am seeing a bit of plate
current, at least its just barely moving the needle instead of the 400ma I
had before.

 

David Robbins K1TTT
e-mail:  <mailto:k1ttt at arrl.net> mailto:k1ttt at arrl.net
web:  <http://wiki.k1ttt.net/> http://wiki.k1ttt.net
AR-Cluster node: 145.69MHz or  <telnet://k1ttt.net/> telnet://k1ttt.net

 



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