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Author Topic: Mystery 21 test 4860 AM 1804 UTC 18 APR 2022  (Read 487 times)

Offline Mad Radio DXer UK

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Mystery 21 test 4860 AM 1804 UTC 18 APR 2022
« on: April 18, 2022, 1805 UTC »
Mystery 21 doing a test, was transmitting SSTV earlier.
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Indoor setup: Elad FDM-S2 & MLA-30 antenna. One stock & another modified.
Outdoor radios: XHDATA D-808, Tecsun PL-330, Tecsun PL-390.

Offline Ray Lalleu

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Re: Mystery 21 test 4860 AM 1804 UTC 18 APR 2022
« Reply #1 on: April 18, 2022, 1932 UTC »
on 4860  via Twente SDR
1925 carrier and warefall images, as M21,
jammed : narrow band on 4857, wideband on the U-sideband ,
1932 going on
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+/- : about 0.02 offset, ++/-- 0.03/0.04 offset
Balanced wire antennas, wire lines and ATU
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