I just occurred to me that my description of the receive situation at
W6UE is backwards. The 160 meter flat top dipole improved the 80 meter
receive noise floor from really deaf to pretty deaf. On 160 meters we
were just really deaf whether we listened on the 160 meter dipole or the
80 meter inverted-vee :-)
73, Mike W4EF..........
On 4/2/2024 6:03 PM, Michael Tope wrote:
When we tried operating in 160 meter contests from W6UE in Pasadena,
it was amusing to see the packet spots complaining about how deaf we
were. We were running a full size flat-top dipole at 90 feet. It
apparently worked pretty well as a transmit antenna. Using the 80
meter inverted-vee for receive that was off the same 90 foot apex at
more or less a right angle to the dipole actually improved things
significantly (e.g. from really deaf to pretty deaf).
Here is an iPhone video of a Q5 "speaker copy" B7P calling CQ on 160
meters during the 2022 CQ WW SSB contest. I tried calling them (off
the video) with no luck whatsoever. I don't think they worked any
North Americans. By contrast, during the 2024 ARRL SSB contest, JA3YBK
who was also Q5 speaker copy came right back to me on the first call
(I don't think I have a recording of that QSO):
https://www.dropbox.com/scl/fi/kd2euhx7x5a5dd5iatm7c/B7P-2022-CQ-WW-SSB-160M.mp4?rlkey=xd6qpj5d3ikg2u39fvotheqhz&dl=0
73, Mike W4EF...............
On 4/2/2024 3:12 PM, Jim Brown wrote:
On 4/2/2024 2:45 PM, David Raymond wrote:
Yes, the Chinese have really discovered ham radio in the last decade.
And beginning 6-8 years ago, they figured out that they had to set up
stations where the noise was low enough that they could hear stations
calling them. When they first appeared, the noise made them deaf. No
different from here in NA.
73, Jim K9YC
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