On 2/5/2023 10:19 PM, Gary K9GS wrote:
I have a K3, not K3S. A couple days ago I noticed a lack of signals heard.
I'm hearing static/ band noise just no signals. I've listened on several
bands.. same regardless of band.I went up in the digital portion of the band
where there are always signals...I was able to decode a few but the band should
have been filled with signals.
Hi Gary,
Thinking of things that have happened to me where there's nothing wrong
with the radio -- is it possible that you accidentally hit the button
for the RX antenna? RF gain turned down? Something in the antenna system?
Old hands on email reflectors say that the antenna system is the first
thing to check, and that includes every cable, every connection. Are
there any no-name connectors or adapters anywhere in your system? When I
got back on the air in 2003 I bought a lot of no-name adapters that
turned out to be junk, and that caused me no end of failures that were
hard to trace. REAL connectors and adapters say Amphenol on them (and
aren't cheap), or have a MIL spec part number stamped into them (they're
what I look for at hamfest flea markets, where they ARE cheap, because
they aren't new and shiny).
How about the antenna(s) themselves? Do you have (or can you borrow) an
antenna analyzer? Try disconnecting the coax connector from the radio
connecting it to the analyzer, and making measurements. If you're
borrowing the analzyer, you probably also want the guy who loaned to you
to make the measurements -- the user interface most analyzers nowadays
can be varying degrees of user-unfriendly if you haven't studied the
user manual.
What happens if you transmit? What's the indicated SWR? Do you have a
watt-meter in line? I'd try with something like 5 W or 20W -- with 20W,
it's very low power from the 100W stage.
73, Jim K9YC
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
