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This is basic troubleshooting. You're probably making the same mistake that
I do -- you're looking for some fancy systemic problem, when the _real_ problem is probably something basic like two bad contacts on the bandswitch or a bent piece of metal or something. I'm an engineer, and the most embarrasing times are when I've been chasing after gremlins in my design for days, only to have a technician find an assembly problem - nothing ruins a good design like a garden variety circuit fault. Assuming that it's _not_ parasitics, what changes when you change bands? Maybe it's the bandswitch, or networks that only get switched in for one band each? Here's some other thoughts: It's a Heathkit -- Did it _ever_ work on 10 and 40? Are all the solder joints good? Are all the right components in place? I'm colorblind, so my first Heathkit had a gray wire with 160V on it wired in place of a green one with 5V -- are all the wires in the right places? Does the 10m switch position go to the 10m tap on the coil, and 40m to 40? After that -- maybe the previous owner only ran it on 20m and the bandswitch corroded on the other positions? Maybe the previous owner was a thug who only used it on 40 and 10 into a 2m antenna and toasted it with high SWR? "LJ" wrote in message m... No Spam (ckh) wrote in message news:ifgU75G3LLdo-pn2-fsI6Eom2wLsY@localhost... On Wed, 10 Dec 2003 18:37:25 UTC, (LJ) -- snip -- Yes, axactly. But why is it doing it on bands like 40 and 10 Meters, but not on 20? Very strange... |
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