Von: BueschelW@web.de im Auftrag von Wolfgang Bueschel ...

few sunspots) and much noise in urban areas. Anyway I keep a close
listening watch across 21 MHz frequencies and hear regulars such as:
21470 21660 BBC WS
21485 21525 Family Radio
21540 21570 21610 REE Madrid
21620 RFI Paris (English 1200) & BBC Africa (French 1200)
21655 Portugal
21695 Libya Arabic as well as other frequencies
21780 Deutsche Welle (French & German).
but in recent days have noticed what seem to be Domestic Services in
Chinese (mainland) some // to transmissions in the 17 MHz band. First
noticed in mid-August at 0640: 21500 kHz two services at S7 clashing 21550
two services at S5, one definitely Chinese 21690 kHz again two services,
one definitely Chinese
Why two programmes clashing? What services and target areas are these?
Heard strong one day, later days down in noise. September 11 at 0850 UT on
21705 kHz two or three Chinese transmissions, two programs, at 0900 UT ads
and time signal all off at 0902 UT. Also another Chinese on 21530 kHz with
4 time beeps at 1100 UT and off.
September 12 on 21705 kHz again and found same programme on 17890, 17855,
17605, 17580 and 17775 kHz. Why such high frequencies for domestic
broadcasts?
Then this week to Spain [postmark looks like 20th - aw] with Sangean ATS
receiver, 40 foot wire from bedroom window, lots of hash noise (plasma
TV's ?) and at 0650 I again noted a number of 21 MHz Chinese with one
network across 21500, 21550, 17650, 17615, 17565, 17550, and 17510 kHz;
with other programmes on 21500, 21550 & 17565 kHz. Most ceased at 0700 UT.
At 0705 UT I found 21705 kHz again echo or two transmitters, 0800 UT time
signal and off suddenly at 0900.
At 0845 getting weak (in noise) on 17560, 17650, and possibly 17775 kHz.
There are no 21 MHz frequencies for China in WRTH 2010, must check summer
up-date. Anyone else hearing these early morning Chinese (could be another
Chinese type language too, I cannot identify differences!).
I still hear slow pulse interference across shortwave 6.7 to 9 MHz, 10 to
13.5 MHz and 18.5 to 25 MHz. 5 pulses per second with about 6 dB variation
every 39.4 kHz. Bad on 7 and 21 MHz. No one has solved it for me yet -
source, technology or its use. A mystery network
(DES WALSH on holiday in Alicante, Spain, using longhand text, as no
computer facilities available, Oct WDXC-UK Contact magazine via dxld Oct
6)
All (or most of) this Chinese on 21 and 17 MHz Des was hearing in the
mornings is jamming by China of Radio Free Asia. If you check their
schedule, you will find most of the frequencies, coming from sites in the
Northern Mariana Islands, Saipan or Tinian. I have often heard them around
0600 UT, even tho it's the middle of the night here. At this time the
jamming isn't usually making it here.
Unravelling whether you are hearing RFA or the jamming requires close
listening for IDs and/or comparing to other known frequencies of China and
file:///E|/datentransfer/wwdfxc_2010/BCDX983.TXT[06.01.2011 12:40:48]