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AFRL
I used to do some contract work for parts of AFRL, but that was three years ago. Let me know what the project is and I will let you know if I know anything about it. James Duffey KK6MC Cedar Crest NM
I used to do some contract work for parts of AFRL, but that was three years ago. Let me know what the project is and I will let you know if I know anything about it. James Duffey KK6MC Cedar Crest NM
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James Duffey
· #1061
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ARRL September VHF contest
At one time there was a rather large, ominous, and fairly lengthy and specific No Trespassing sign at the gate, which, oddly enough, was left open every time when I was there. If I recall correctly, t
At one time there was a rather large, ominous, and fairly lengthy and specific No Trespassing sign at the gate, which, oddly enough, was left open every time when I was there. If I recall correctly, t
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James Duffey
· #1020
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Giant Sunspot on Betelgeuse
< https://www.bbc.com/news/science-environment-53218658 > If our sun had spots this size, The MUF for F2 propagation would probably extend to 500MHz or so! - Duffey James Duffey KK6MC Cedar Crest NM
< https://www.bbc.com/news/science-environment-53218658 > If our sun had spots this size, The MUF for F2 propagation would probably extend to 500MHz or so! - Duffey James Duffey KK6MC Cedar Crest NM
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James Duffey
· #1015
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FT8 performance (or, lack of) on 432
Well, there is a major E-W flight path between you and Phoenix.I guess you probably have planes on that path one way or another every 10 minutes or so. If you look at the slope of the frequency shift
Well, there is a major E-W flight path between you and Phoenix.I guess you probably have planes on that path one way or another every 10 minutes or so. If you look at the slope of the frequency shift
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James Duffey
· #1012
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2020 JAN VHF
Thanks for the nice words Bruce. I think it hard to talk about the impact FT8 has had on the January VHF contest without some background, and that background grew into history. That picture of K1JT as
Thanks for the nice words Bruce. I think it hard to talk about the impact FT8 has had on the January VHF contest without some background, and that background grew into history. That picture of K1JT as
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James Duffey
· #998
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2020 JAN VHF
Jay, thanks for the kind words. I have contemplated doing a subset of this article with the activity data for the Contest Update e-mail newsletter or National Contesting Journal. I think I would need
Jay, thanks for the kind words. I have contemplated doing a subset of this article with the activity data for the Contest Update e-mail newsletter or National Contesting Journal. I think I would need
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James Duffey
· #996
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2020 JAN VHF
Thanks Mike, I appreciate the comments and they are well received here. Some times when I get bogged down writing these things I get discouraged and comments like yours make it all worthwhile. I wante
Thanks Mike, I appreciate the comments and they are well received here. Some times when I get bogged down writing these things I get discouraged and comments like yours make it all worthwhile. I wante
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James Duffey
· #994
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2020 JAN VHF
Thanks Jonesy. James Duffey KK6MC Cedar Crest NM
Thanks Jonesy. James Duffey KK6MC Cedar Crest NM
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James Duffey
· #992
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Expanded Results for ARRL January 2020 VHF contest available on line
The expanded results writeup for the ARRL January 2020 VHF contest Is available here: < https://contests.arrl.org/ContestResults/2020/Jan-VHF-2020-FinalFullResults.pdf > Congratulations to Rocky Mount
The expanded results writeup for the ARRL January 2020 VHF contest Is available here: < https://contests.arrl.org/ContestResults/2020/Jan-VHF-2020-FinalFullResults.pdf > Congratulations to Rocky Mount
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James Duffey
· #990
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FM simplex during VHF contests
John - In my experience FM QSOs around Albuquerque are kind of hit or miss, unless you can catch someone on simplex and break in on their QSO. I have had luck calling CQ on 146.52 and 146.58 (better l
John - In my experience FM QSOs around Albuquerque are kind of hit or miss, unless you can catch someone on simplex and break in on their QSO. I have had luck calling CQ on 146.52 and 146.58 (better l
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James Duffey
· #987
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AA5B, June VHF Contest
Nice writeup Bruce. Here are some pictures I took of our operation: The 2M+ antennas should have been higher and a bit longer. James Duffey KK6MC Cedar Crest NM
Nice writeup Bruce. Here are some pictures I took of our operation: The 2M+ antennas should have been higher and a bit longer. James Duffey KK6MC Cedar Crest NM
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James Duffey
· #976
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Interesting propagation phenomenon
There has been some work in New Zealand: < https://www.qsl.net/zs6bte/VHF-UHF%20Lightning%20Flash%20Communications.htm > And in Europe: < https://hal.archives-ouvertes.fr/hal-00638547/document > It se
There has been some work in New Zealand: < https://www.qsl.net/zs6bte/VHF-UHF%20Lightning%20Flash%20Communications.htm > And in Europe: < https://hal.archives-ouvertes.fr/hal-00638547/document > It se
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James Duffey
· #973
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AA5B LM in VHF contest
Yes, Sunday or even Saturday evening would be nice. James Duffey KK6MC Cedar Crest NM
Yes, Sunday or even Saturday evening would be nice. James Duffey KK6MC Cedar Crest NM
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James Duffey
· #950
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AA5B LM in VHF contest
AA5B James Duffey KK6MC Cedar Crest NM
AA5B James Duffey KK6MC Cedar Crest NM
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James Duffey
· #949
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K5WO in DM66
We’ll look for you Bob. - Duffey James Duffey KK6MC Cedar Crest NM
We’ll look for you Bob. - Duffey James Duffey KK6MC Cedar Crest NM
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James Duffey
· #947
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AA5B LM in VHF contest
Bob we will be just south of the Oak Flat day use area. DM64ux I think. James Duffey KK6MC Cedar Crest NM
Bob we will be just south of the Oak Flat day use area. DM64ux I think. James Duffey KK6MC Cedar Crest NM
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James Duffey
· #945
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AA5B LM in VHF contest
AA5B James Duffey KK6MC Cedar Crest NM
AA5B James Duffey KK6MC Cedar Crest NM
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James Duffey
· #943
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AA5B LM in VHF contest
Keith - 100W on 144, 50W on 432, and 20w linear/120W digital on 222MHz. My 8ft rover Yagis at 20ft. We will have the digital modes on all bands. - Duffey James Duffey KK6MC Cedar Crest NM
Keith - 100W on 144, 50W on 432, and 20w linear/120W digital on 222MHz. My 8ft rover Yagis at 20ft. We will have the digital modes on all bands. - Duffey James Duffey KK6MC Cedar Crest NM
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James Duffey
· #940
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AA5B LM in VHF contest
AA5B and I will be running a limited multiop from DM64 this weekend for the VHF contest. We will have 6M, 2M, 222MHz, and 432MHz. We will have 500W on 6M to 4element Yagis at 40 ft and my Ts2000 plus
AA5B and I will be running a limited multiop from DM64 this weekend for the VHF contest. We will have 6M, 2M, 222MHz, and 432MHz. We will have 500W on 6M to 4element Yagis at 40 ft and my Ts2000 plus
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James Duffey
· #936
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SLACK chat
Thanks Justin. APRS s really useful to fixed stations when it comes to allocating time to spend chasing rovers. James Duffey KK6MC Cedar Crest NM
Thanks Justin. APRS s really useful to fixed stations when it comes to allocating time to spend chasing rovers. James Duffey KK6MC Cedar Crest NM
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James Duffey
· #931
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