[Lowfer] TAG

[John Andrews]

Dex,

Good to hear from you! Yeah, the R75's are not very robust in 24/7 
operation. A typical culprit is the -5V supply, a very small switcher 
done with a 555 timer. The electrolytics around it tend to dry out. At 
least one of them has too much current going through it. Very tight 
space, too. I finally gave up and put my own +12V to -5V board on the 
inside of the back panel. The current problem with my R75 is going to 
require some detective work, though, and I will do it this winter. My 
other R75 is working fine, so I'm all set. And, I've found that my nice 
Elecraft K4D works great at LF, so that's a good backup.

No, I can't make a TAG out of that reception, either. It's early in the 
season...

Was thinking the other day about how much fun it was to do that NC to MA 
WOLF QSO.

John, W1TAG

On 10/22/2025 9:15 AM, W4DEX wrote:
> John,
> My R-75 is also kaput.  Of all the rigs I have the best on LF rx is the
> IC-7610.
> The only overnight trace seen near TAG's frequency is attached.  Can't
> make TAG out of that.
> Dex
> 
> 
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