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Take a look at my CORROSION TOPICS
page. Lots of unfortunate mistakes and cures. Complete with
closeups!!!
w/both T/R AND receiver protection. What I want is effectively a
12V-powered small brick that can be inserted in a receiver's input that
will provide:
1:
Power-off > receiver input grounded;
2: RF detection
> receiver input grounded;
3: Remote input
> receiver input grounded.
with programmable I/O connections vs front panel switching; full RF
switching via vacuum relays including RF protection for receiver line(s);
all the I/O lines are switched by short connector-to-relay shielded
coaxial cable runs; all relays fully shielded; full active-connection
indicators; and all relay-connections fall-through to protected or
bypassed position when off or failed.
I am going to include the AF Controller here
as it is developed, as an example of Project Design and Implementation. Be
very careful
to keep in mind that the circuits are not
final until described as finished!
w/ bandpass filters, BCI filtering, selectable gain
low-noise 2N5109
or NEC/CEL NE68133
pre-amp, and full RF (self) protection.
A
filter for the rejection of BCI.
Front Panel
Trask Wideband PreAmp:
PreAmp Transformer Drawing:
Antennas,
Preselectors/etc.
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