The QRP PA was published at "U- QRP- C. Reference
Book- #3," page 3. I have done the PA as well as
for 10 meters as well as for others high (20-12
meters) amateurs bands. It works well! It gives near 1 watts to
50(75) Ohm load.
73/72! I. G.
DATA (for 10 meters):
L1, L2- RFC, 10 micro Henry.
L3- 7 turns, wire diameter is 0.7 mm (21 AWG), form
diameter is 7 mm (used old inductor from IF tract of tube TV,
the inductor has a ferrite core), tap from 2 turn from cold end;
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L4- 5 turns wire diameter is 0.7 mm (21 AWG), form
diameter is 7 mm (used old inductor from IF tract of tube TV,
the inductor has a ferrite core);
T1- f= 300 MHz, gain 100
T2- f= 600 MHz, gain 50, 3 watts output. Need be installed
at a small heat sink.
Figure PA is reproduced at "U- QRP- C. Reference Book- #3."
Early 1991 year the PA with some modifications was
published at different References, one of them:
Polyakov V.T. : To the Ham about the DC Technique. Moscow, 1990.
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