[Elecraft] Antenna Problems with K3 firmware 5.57

[Jim Brown]

I agree, and you'll need pretty high Q components. Lots of good 
capacitor choices at HSC. Another suggestion though. KLIV is omni during 
the day, but strongly directional at night. This is quite common on the 
AM band. I suggest that you make your strength measurements at night. 
Depending on where you are, a different station may be stronger at night 
when you're working 160.  Here's a link to the FCC website where you can 
look up technical details of any broadcast station.

  https://www.fcc.gov/media/radio/am-query

And here's the listing for KLIV Notice the links near the bottom of each 
listing showing pattern and coverage area.  The wild distortions in the 
coverage area are the result of varying ground conductivity -- the big 
thumb over the Bay is because it's sea water.

https://transition.fcc.gov/fcc-bin/amq?list=0&facid=19531

Another thought, Bill.  A horizontal 160M antenna at 20 ft is a real 
worm-warmer, and while 40 ft is better, it's still very low. If you can 
do some sort of counterpoise, a top loaded vertical, even if it's short, 
could work a lot better.

Here are slides for the talk I've done several times about getting on 
160M. It's mostly about antennas and counterpoises. You might have heard 
it. :)  The K2AV folded counterpoise seems to work pretty well, and 
doesn't take a lot of space.

73, Jim K9YC

On Fri,3/31/2017 2:50 PM, Walter Underwood wrote:
> Use a series-tuned “wave trap” on KLIV’s frequency across your feedline.