[160m] 160m Counterpoise / Most Distant Contact
Brian Webb
kd6nrp at earthlink.net
Mon Dec 28 18:17:04 EST 2009
Good Afternoon:
Last weekend I added a 100 foot wire to my existing counterpoise. I ran it
from my ground rod, around the bottom of the house, and up toward the
street. My counterpoise now consist of the following wires:
Length
(feet) Depth Comments
------ ----------
----------------------------------------------
45 Surface Runs along bottom of exterior house wall
50 1-inch Buried in lawn
85 1-inch Runs along backyard perimeter
100 Surface New. Runs along bottom of exterior house
wall
Adding the 100-foot wire had three effects:
Previously, I had to do a bit of work to get a good match (1.3:1 SWR) at the
bottom of the band. Now, I can easily get a 1.0:1 match there.
After I added the new wire, my ANC-4 noise canceller was more effective at
nulling background QRM.
Finally, it seems like my 160m noise floor may have gone down an S-unit or
so.
My antenna is an improvised 152-foot end-fed wire, up 12-feet, within a 50 x
50-foot backyard.
Initial reports indicate that adding the 100-foot counterpoise wire did not
improve my transmit signal.
This morning I had a pleasant surprise. At 1302 UTC on 1815.0 KHz I worked
W8TE via CW. My power was 100-watts. I'm in southern California and he's in
Michigan! He was 599 by the way. That's my most distant 160m contact thus
far.
Regards,
Brian, KD6NRP
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