I bought an RV75 several years ago to stop drifting. It works very
well. But I installed Conny's DAFC in both of my TR7As and seldom
use the RV75 any more. I use it for split but thats about it.
With the DAFC I can turn on the TR7A and immediately begin using
it with no drift . The modification is completely reversible so if
you want to make the radio back to original no one
would ever know it's been there. By the way the installation is
far from "open heart surgery" you don't even have remove the top
cover just the bottom plate, solder 4 wires and 2 coax
cables and your done. You don't have align anything just put the
bottom cover back on and use the radio the same as always except no drift.
73 Joe KC9LAD
Tom,
I did a bit of research on huff-puff stabilizers a month or so back
and the one that seems to be preferred for the TR7 is DL1SDQ's
"Digital Automatic Frequency Control." It's about $114. Info on it
can be found at http://www.conny-dl1sdq.de
Incidentally, after a good bit of research on the subject, I decided
to not make any changes to my TR7. It is what it is and I thought
I'd leave it that way. The best stability solution without doing
open heart surgery on it is probably to get an RV-75 although
they're a bit scarce and when you do find one, it's likely be a bit
on the pricey side.
73,
Tony
K4KYO
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