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Pictures of K8IQY's second 2N2/40
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This
is the rig installed in a TenTec TP-47 aluminum case. The On-Off
switch is part of the volume control potentiometer and the r.f. gain
switch is part of the r.f. gain control. That knob pulls out to
change the gain by +10 dB. The 10-turn dial tuning assembly
is about 2 inches in diameter |
A rear panel shot showing the keying jack, antenna connector, fuse holder, and the power jack |
Looking under the hood from the front! |
Looking
from the right side. In the foreground to the right is the keying
circuitry and to the left of that begins the receiver. You can
see the combined pot and switch of the r.f. gain control at the very
left mounted to the front panel. Beneath it is the pot for the
variable bandwidth crystal filter. |
This
is a view of the back of the front panel. Between the 10-turn
tuning pot and the volume control at the very right, is the RIT
assembly mounted to its potentiometer. The speaker jack is the
square black object at the lower right, under the volume control. |
Looking
from the left side of the rig. Starting from the right side near
the front panel you can see the toroid for the product detector.
The next circuitry is the audio muting, and the remainder as you move
left is the audio amplifier. The red object to the very left is
the audio output transformer. |
A closeup shot of the output transistors and low pass filter. To the left is the VFO circuitry. |
One
last overall picture looking down into the rig from overhead. You
can still see some of the black felt tip pen lines that were used to
partition the substrate before building began. Most of those
lines are covered by the power and signal wiring. The TP-47 case
readily accomodates the 5X7 inch substrate size used. |
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