IARU monitoring intruder bandwatch Europe asked me last week
to check 21445 kHz channel after 13z
On June 3 at 12.50z heard nothing on 21445 kHz:
21455.013 footprint, IRN VoIRIB Sirjan bcast center, Chinese, S=9+25dB
21505.003 ARS BSKSA Riyadh, Arabic, S=9+35dB, 1248z
21580 F RFI Issoudun, Französ., tiny in skip zone, 1245z
21650.009 IRN VoIRIB Tehran Kamalabad bcast center, Chinese,
much tiny on sidelobe in Europe at 1243z
21750.013 footprint, IRN VoIRIB Sirjan bcast center,
Indonesian/Malay service at 1220-1320z, S=9+10dB
but from 1300z, also
21779.975 kHz odd frequency DWL Bonn, in Hausa to West Africa,
via UAE Al Dhabbaya site at 13-14z.
and also
21800.009 kHz BUL The Overcomer Ministry, religious English from
Spaceline Ltd. Sofia Kostinbrod site Bulgaria.
- - - - -
!!!! ... but now at 1315z, unquestionable
21445.000 kHz CHN is CRI China Radio International
1st Chinese program in parallel 1300-1357z
also \\
13855 kHz Kashi-Kashgar Western China and
13650 kHz Urumqi West China.
But, I can not see any intermodulation mathematical formula yet.
theoretically 21445 minus 13855 kHz = 7590 kHz
but maybe it is a fundamentally targeted jammer on 21445 kHz
against SOH Sound of Hope program from Taiwan island ?
73 wolfgang df5sx
21445.0 2 BCs um 1330 utc - vermutlich Intermodulation - 60 Grad/degr
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