[Premium-Rx] WJ Mystery Device

[Ed Tanton]

John Forster brings up an important point: non-limited DC applied to the 
unit will smoke it-if it's a DIODE switch. I had originally mentioned 
'ohming' it, then-in rereading-decided it wasn't necessary to mention (when 
I decided the output was probably DC isolated.) Probably should have left 
it in. I didn't want to just 'publish' John's email w/o permission, but the 
gist of it was that he thinks it IS a diode switch, and followed with that 
warning.

I thought "relay" because 100% of the surplus stuff I've gotten my hands on 
(resembling that WJ unit) was relay-switched. Perhaps someone already 
zapped all the diode switches before they got cheap enough to get to me. 
Personally, I've never been very interested in diode switches because they 
aren't usually intended for HF applications, and that's always been my 
interest in such things.


73 Ed Tanton N4XY <n4xy at earthlink.net>

Ed Tanton N4XY
189 Pioneer Trail
Marietta, GA 30068-3466

website: http://www.n4xy.com

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LM: ARRL QCWA AMSAT & INDEXA;
SEDXC NCDXA GACW QRP-ARCI
OK-QRP QRP-L #758 K2 (FT) #00057

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