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Author Topic: SFI 4094.85 CW 1113 UTC 28 SEP 2021  (Read 1277 times)

Offline ChrisSmolinski

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SFI 4094.85 CW 1113 UTC 28 SEP 2021
« on: September 28, 2021, 1220 UTC »
While checking for Windy and the Desert Whooper, I noticed some CW on 4094.85 kHz. Sounded like it could be a beacon, but  a very weak signal Here's a recording:

https://radiohobbyist.org/blog/mypics/4094.8-28-Sep-2021-11.13.13UTC.mp3
« Last Edit: September 28, 2021, 1823 UTC by ChrisSmolinski »
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Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 900 ft Horz skyloop / 500 ft NE beverage / 250 ft V Beam / 58 ft T2FD / 120 ft T2FD / 400 ft south beverage / 43m, 20m, 10m  dipoles / Crossed Parallel Loop / Discone in a tree

Offline Teotwaki

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Re: UNID Beacon 4094.85 CW 1113 UTC 28 SEP 2021
« Reply #1 on: September 28, 2021, 1447 UTC »
I was also listening to DW and saw this beacon off to the left, slowly puttering out "SFI". I am hearing this beacon at home right now. No mean feat to make it over the urban noise.

I double checked what I heard by tuning in on the KFS SE kiwi

Format

sends 8 slow dashes
sends "SFI" twice, very slow CW

Congrats to the builder   ;D
« Last Edit: September 28, 2021, 1619 UTC by Teotwaki »
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Jim
NRD-525, Elecraft KX3 and Elecraft PX3 Spectrum Display
76' end fed long wire & 66' off-center fed dipole for 10/20/40 meters
Orange County, SoCal, The better half

Offline ChrisSmolinski

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Re: SFI 4094.85 CW 1113 UTC 28 SEP 2021
« Reply #2 on: September 28, 2021, 1825 UTC »
Yes, congrats to the builder!

I also feel pretty happy hearing it here out east. Catching a new west coast 4 MHz beacon here is tough.  :P
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Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 900 ft Horz skyloop / 500 ft NE beverage / 250 ft V Beam / 58 ft T2FD / 120 ft T2FD / 400 ft south beverage / 43m, 20m, 10m  dipoles / Crossed Parallel Loop / Discone in a tree

Offline ChrisSmolinski

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Re: SFI 4094.85 CW 1113 UTC 28 SEP 2021
« Reply #3 on: September 29, 2021, 1106 UTC »
SFI suddenly appeared at 1103 UTC this morning, 29 SEP 2021.

Any chance of an eQSL from the op?  ;D
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Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 900 ft Horz skyloop / 500 ft NE beverage / 250 ft V Beam / 58 ft T2FD / 120 ft T2FD / 400 ft south beverage / 43m, 20m, 10m  dipoles / Crossed Parallel Loop / Discone in a tree

Offline Teotwaki

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Re: SFI 4094.85 CW 1113 UTC 28 SEP 2021
« Reply #4 on: September 29, 2021, 1230 UTC »
Good signal all over the west on various kiwi SDR locations including Canada and Hawaii.

Speculation:

5 watts RF power into horizontal 1/2 wave dipole

The slow CW sounds like a memorized “fist” and not micro controller generated.
« Last Edit: September 30, 2021, 0433 UTC by Teotwaki »
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Jim
NRD-525, Elecraft KX3 and Elecraft PX3 Spectrum Display
76' end fed long wire & 66' off-center fed dipole for 10/20/40 meters
Orange County, SoCal, The better half

Offline Teotwaki

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Re: SFI 4094.85 CW 1113 UTC 28 SEP 2021
« Reply #5 on: September 30, 2021, 0434 UTC »
Didn't hear SFI most of the day. Somewhere in the last hour I noticed it on the waterfall display, about 20dB over the noise floor.
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Jim
NRD-525, Elecraft KX3 and Elecraft PX3 Spectrum Display
76' end fed long wire & 66' off-center fed dipole for 10/20/40 meters
Orange County, SoCal, The better half

Offline ChrisSmolinski

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Re: SFI 4094.85 CW 1113 UTC 28 SEP 2021
« Reply #6 on: September 30, 2021, 1103 UTC »
SFI appeared here suddenly at 1101 UTC, I was already receiving the Desert Whooper for some time.
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Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 900 ft Horz skyloop / 500 ft NE beverage / 250 ft V Beam / 58 ft T2FD / 120 ft T2FD / 400 ft south beverage / 43m, 20m, 10m  dipoles / Crossed Parallel Loop / Discone in a tree
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