Mark
I had several first time similar experiences this weekend during the contest on
144, 222 and 432 FM with zero squelch.. All were N-S and lasted for a 2
seconds or less. Stations that were tickling the noise suddenly came in clear
as a bell. I racked it up to Tx/Rx across the Dulles Airport and Nationsl
Airport departure and arrival routes, airplane scatter.
The Q's were with stations at 250 to 300 miles away and it did not happen often
on Rx when I wasnt working someone on a sched, but it did happen. And yes it
did help complete Q's particularly on 446 or 432.
Not suref if that helps.
73
John
KM4KMU
On Tuesday, January 21, 2020 Mark Spencer <mark@alignedsolutions.com> wrote:
I'm curious has anyone else noticed brief "blips" of enhanced signals on 144
MHz and 222 MHz at all hours of the day ? (Ie a signal from a distant grid
peaks up well out of the noise for a few seconds then vanishes never to be
heard again.)
I have noted this quite often (mostly on 144 MHz) when contesting from remote
areas. The signals don't seem to sound like meteor scatter and seem much
shorter than typical air craft scatter events, but I can't really rule out
either mode.
Irrespective of the source of these signals I have been pondering ways to
exploit this type of propagation and make more contacts during contests. Maybe
using MSK144 with a very short T/R time might work ? I figure anyone
interested in trying to work me could monitor the pre announced frequency and
probably wouldn't need to transmit unless they actually heard me ?
I was thinking perhaps of trying this out on 222 MHz while I used more
traditional modes on 50 and 144 MHz. This could run in the back ground so to
speak and wouldn't really impact my "rate" as I typically don't do much with
222 and 432 unless I am "running the bands" with another station.
Comments and suggestions are welcome.
73
Mark S
VE7AFZ
mark@alignedsolutions.com
604 762 4099
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