I don't know what audio chip Drake used in the R-7. I know the TR-7 uses
the LM380 while the TR-5 uses the TDA2002 aka LM383. The TDA2002/LM383
has substantially better specs and performance. This is the same chip
many Drake users are familiar with as it was a very popular mod for the
R-4C. Subseq
I feel bad that after not having posted for years, I came back with a
negative post ...
The RF performance is certainly outstanding, but I think, and it might just
be my ears, that poor receive audio is the achilles heel of the entire 7
line. It might have been fine in its day, but compared to
Ed,
Over the years, I have had (2) R7's and one R7A.
You should get the service manual for the radio - it's quite a bit
different and more complex than the receiver in the TR7.
None of mine had low sensitivity, so if yours seems weak in that department,
something is probably amiss.
All of my
Hello,
I am starting to use an R7A recently obtained. I wonder if anyone can
comment on how difficult it may be to align the R7A; mine seems a bit low on
sensitivity; at least the S-meter is reading low. Also, I notice the
calibrator on mine is not working. I don't think it's operator erro
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