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2015 ARRL 160 Meter Contest Results

Ken - NM9P
Ken - NM9P Member ✭✭
edited June 2020 in SmartSDR for Windows
Well, there was a certificate in the mail today. In spite of what I though was a dismal effort in last year's ARRL 160 Contest, I apparently did well enough to score first place in Indiana in the Single Op, Low Power, Unlimited category! I almost forgot about it, which is easy to do when it takes 11 months before the certificate arrives.image

Comments

  • Ken - NM9P
    Ken - NM9P Member ✭✭
    edited June 2020
    Of course, there were only two Indiana stations in this category... but I was 11th out of 18 in the Central Division. Nothing to brag about!
  • Norm - W7CK
    Norm - W7CK Member ✭✭
    edited June 2020
    Hey Ken,
    I don't contest much, but I do like 160m.  I have a small lot and only have an Inverted-L for this band.  I use it for XMT and RCV.  A bit noisy, but it works ok.

    Can you tell me what your using for antennas on this band?

    Norm - W7CK
  • Kevin
    Kevin Member
    edited July 2019
    Our club's field day results were similar. #1 (of 1) in Category=2AB and Power Mult=5 for VA and Roanoke. It just means we've scared the competition away. This year I sponsored the CQ WW RTTY SOAB QRP World plaque. It looks like it is going to go to RU4SS with an amazing score. I really enjoy some of these contests even as a casual participant.

    That certificate is going to look real nice on the wall Ken. 

    73,
    Kev K4VD
  • Ken - NM9P
    Ken - NM9P Member ✭✭
    edited December 2016
    I use either a 160 Offcenter fed dipole at 38 ft. Or an Inverted-L (35 up and 85 over) with two radials. It works better when I can elevate the radials about ten ft. Above ground. For receive, I use either of the antennas, or a home brew tuned shielded magnetic loop about five ft. Above ground. The loop is made of 20 ft. Of RG8 with the shield split at the top, with tuning/matching network tuned with varactor diodes. The system works OK, but I have lots of hvac motor and other noise sources on 160 at the qth.
  • Norm - W7CK
    Norm - W7CK Member ✭✭
    edited December 2016
    Thanks Ken.  That's encouraging.  I'll keep working with my Inv-L for now and see what I can do to improve it.  Noise here isn't usually very bad but the Inv-L seems to be the noisiest. 

    I have to admit, I hear things on the 6700 that I don't on the IC-7100.

  • Ken - NM9P
    Ken - NM9P Member ✭✭
    edited December 2016
    From what I have read, using as few as two or four elevated radials (about 8-10 ft. above the ground) increases efficiency over buried radials. until you get to about 32 in-ground radials.  

    I have proven this on my 40 meter vertical with only 4 radials at 8-10 ft.
    On the 160 inverted 'L', I can manage 2-3 temporary radials, even though they are bent to a 90 degree angle after about 65 ft.  I quickly angle them up to 8-10 ft for the first 10 ft. and then support them with 1/2 inch electrical conduit shoved about a foot into the ground every 20 ft or so to keep them from clothes-lining people in my backyard.  After 160 season, I roll the inverted 'L' and radials up on an electrical cord reel and store them until the next season....

    When I just lay them on the ground, I don't get as good performance.  I haven't been able to fully understand the radiation efficiency difference, but it seems it has to do with ground capacitance, etc.... I still need to do some more study.  But I am contemplating doing the same thing with an 80 meter inverted 'L.'  I think I may be able to squeeze 4 elevated radials into the yard, somewhat bent, perhaps using two of the 160 radials as part of the system this winter.

    Perhaps some of the other 80/160 experts will chime in with some suggestions?

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