Hello Lyndon.
WB4HFN page can be of help. Also GW4ALG used to have a page on
homebrew versions of the modules you have. Those old pages can be
seen here:
This page shows you how to make each of the other band modules:
This page shows you the WARC band modules:
?The WB4HFN page at:
has a homebrew Aux7.
Jim Shorney's article:
/g/DRAKE-RADIO/files/TR-7%20Better%20Allband%20Transmit%20Mod.pdf
or
talks about how to "general coverage" the TR7 for both transmit
and receive without the Aux7 and associated modules.
If you do want to make modules for the Aux7 then as someone else
suggested, buy a supply of 1N4148 diodes.? The 14 pin DIP headers
will be harder to find and expensive.
Another WB4HFN page that shows the truth table for those modules
and where the cathodes of the 1N4148's need to go to make up your
RTM7 band modules:
Good luck.
Jim Pruitt
WA7DUY
On 4/24/2024 5:15 PM, Lyndon VE7TFX via
groups.io wrote:
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>From poking around the band modules on the AUX-7 I acquired,
they just seem to be diodes connecting pin 1 to everything else,
right? Is there any reason I can't just roll my own with 1N4001s
or something similar?
The two modules on the board I have appear to be TI parts,
labelled BC1206. I have searched high and low but I can't
find a data sheet, or any reference at all, to a TI part
bearing that number. Anybody have an idea what those might
be?
Cheers,
--lyndon
P.S. I have two band modules covering 0-1MHz I would be willing
to swap for some WARC coverage :-)
