Lee,
Take an antenna analyzer out to the base of the antenna and measure
between the radiator and the radial field. That should tell you what
the antenna itself reads both for resonance and SWR.
Then put a dummy load on the antenna end of the coax. Most antenna
analyzers are capable of measuring the coax loss, so go into the shack
at the other end of the coax and measure it.
Those two steps will tell you whether the problem is with the antenna or
the feedline.
If you do not have a coax loss function on your antenna analyzer, feed
the coax, put a wattmeter in the coax in the shack and observe the power.
Without changing anything on the rig, remove the wattmeter and move it
to the other end of the feedline. Have someone else do a TUNE on the
rig while you observe the power at the other end of the coax - compare
the two wattmeter readings.
If nothing is revealed by those tests, look with close scrutiny at any
coax connectors or adapters that you did not use for the tests -
adapters are a frequent cause of failure - lesson to use only good ones.
73,
Don W3FPR
On 12/1/2018 11:54 AM, Leroy Buller wrote:
There
I tried to get on 160 with my Inverted L last night. 60 feet up and the
rest over to a tree, 130 feet total. About 20 random length radials in the
yard. The best I can do with a city lot. This antenna worked last year
very well, but now I get this
______________________________________________________________
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]
