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Antentop is FREE e-magazine devoted to Antennas and Amateur Radio an
Special page devoted to
Practical Photos for P.A. on Tube GU-43B
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ANTENTOP- 01- 2010, # 012 |
Practical Photos for P.A. on Tube GU-43B |
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Photo # 3 |
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Photo
# 3. Plate Choke is at the front. I made my Plate Choke
from high- Ohmic (manganin)
wire in silk insulation. The Choke was wound 2x 0.33- manganin
wire. It has R= 18.3- Ohm , L= 34.5-
microH. Two capacitors 3300- pF x 3300- V are installed
at "cold" end of the choke. Near the tube
socket is Red
capacitor 0.01-microF. Input RF is going through the capacitor. |
Photo
#4. Here is shown assembled RF- Part of
the PA. Front Panel is attached to the bottom by L- parts. Bottom
and Front Panel are aluminum plate in 4- mm thick. Fan here is only
for the time tuning of the PA. At the ready design the fan is at
rear panel. The fan is blown inside the box. |
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Photo #4 |
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Last Updated:
January 22, 2020 22:27
