This weekend, we will try an experiment suggested by Roger in Germany.
As you know, the transmitter hum, most pronounced at 360 Hz, has mixed with the RSID, resulting in the Fldigi RxID flipping the audio frequency to ~1140 Hz rather than the correct ~1500 Hz.
Roger suggested transmitting “nonsense data” at 360 Hz, in addition to the primary data at 1500 Hz, to see if it prevents the intermodulation that causes the incorrect audio frequency. Or maybe it will make it worse. In any case, this should be fun.
Please follow this procedure for this weekend’s VOA Radiogram:
1. Configure > IDs > ID > RsID > select Searches passband
2. At 1:45 into the show, observe if RxID changes center frequency to 1140 Hz rather than the correct 1500 Hz. Change it back to 1500 Hz if necessary
3. At 2:30, during the program preview, BPSK63F (PSK63F) at 360 Hz, reduced by 15 dB, no RSID, with the VOA Radiogram transmission schedule, will begin.
4. At 2:56, the mode changes to Olivia 64-2000, with RSID. Observe if the audio frequency stays at the correct 1500 Hz or changes to 1140 Hz. Change the frequency back to 1500 Hz if necessary.
5. At 10:03, the mode changes back to MFSK32, with RSID. Observe if the audio frequency stays at the correct 1500 Hz or changes to 1140 Hz. Change the frequency back to 1500 Hz if necessary.
6. At 13:02, the BPSK63F at 360 Hz will end.
Here is the lineup for VOA Radiogram, program 190, 19-20 November 2016, all in MFSK32 except where noted:
1:45 Program preview
2:56 Olivia 64-2000: FUNcube enters amateur service
10:03 MFSK32: China increases Internet control*
17:29 Freedom House global Internet freedom report*
26:34 Closing announcements*
* With image
Please send reception reports to radiogram@voanews.com
VOA Radiogram transmission schedule
(all days and times UTC):
Sat 0930-1000 5865 kHz
Sat 1600-1630 17580 kHz
Sun 0230-0300 5745 kHz
Sun 1930-2000 15670 kHz
All via the Edward R. Murrow transmitting station in North Carolina.
Radio Pushka (Радио Пушка) will broadcast via Channel 292, Germany, 6070 kHz, Sunday, 20 November, at 2000-2100 UTC. MFSK32 will start at 2052 UTC, followed by one experiment with Feld Hell, then SSTV Scottie 1 mode (2 pictures). See http://radiopushka.blogspot.ru/2016/11/the-hell-digi-schedule-20112016.html .
The Mighty KBC will broadcast to North America Sunday at 0000-0200 UTC (Saturday 7-9 pm EST) on 6145 kHz, via Germany. A minute of MFSK32 will be transmitted at about 0130 UTC. Reports to Eric: themightykbc (at) gmail.com . See also http://www.kbcradio.eu/ and https://www.facebook.com/TheMightyKbc/ .
DigiDX has a new transmission schedule, both via WRMI Florida:
Sunday 2030-2100 UTC on 11580Khz (Targeted at Europe)
Sunday 2330-2400 UTC on 11580kHz (For North and South America)
See http://www.digidx.uk/ and https://www.facebook.com/digidx/
Italian Broadcasting Corporation (IBC) has digital modes as follows:
EVERY WEDNESDAY ON 3975 KHZ 20.30-21.00 UTC in MFSK32 and OLIVIA 16-500
EVERY FRIDAY ON 9955 KHZ 02.25-02.30 UTC in MFSK32
EVERY SATURDAY ON 1584 KHZ 21.25-21.30 UTC in MFSK32
EVERY SUNDAY ON 7730 KHZ 00.55-01.00 UTC in MFSK32
EVERY SUNDAY ON 6070 KHZ 11.30-12.00 UTC in MFSK32 and OLIVIA 16-500 (VIA RADIO BCLNEWS)
For the complete IBC transmission schedule, including voice broadcasts, visit http://ibcradio.webs.com/