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TOPIC: 5MHz BEACON and PROPAGATION STUDY

Re: 5MHz BEACON and PROPAGATION STUDY 5 months 4 weeks ago #1761

  • DF6MK
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Hi Stewart,

thanks for the info.
I think we will have a lot of spots in the future on the 5.25 MHz allocation.
We don't have frequencies near 5 MHz in Germany, so I have to listen only.
My location is favoring all south paths, the hill is sloping to the south at an angle of nearly 20°.
This afternoon and evening I'm in a local sked and have to transmit. My Perseus doesn't like to much HF at the antenna input ;-), therefore I will start listening abt 19.00 UTC.

Werner, DF6MK
Last Edit: 5 months 4 weeks ago by DF6MK. Reason: Correcting a mistake
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Re: 5MHz BEACON and PROPAGATION STUDY 5 months 4 weeks ago #1760

  • ZS6SGM
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Hi Werner,

Thanks for taking time off to register on the forum. (Thanks Viv for validating his login). Thank yo ualso for taking the time to contact us and listen out for our beacon!

Ok some comments:

You can quite clearly see the QRM at just below 5.250Mhz. As far as I can establish it is a Taiwanese weather station which is the primary user of that frequency. The QRM is audible and very loud at our QTH and last night I was on several WEBSDR websites and used them to listen to 5.250Mhz and hear the exact same audio. I did some scanning around and have located some other gaps in the 60m band which appear to be less heavily congested.

I have moved the signal up 60Hz to try and move away from the QRM on 5.250 and this has helped because since Friday we are gettings spots and our signal doesn't drown in the QRM. (When they are in narrow band mode).

The weather station seems to also have a mode where it transmits a very wide band signal (appears to be about 5Khz wide and does not appear to be HF-FAX but rather some high bandwidth data stream) and this will affect our WSPR capabilities during that transmission window. But we are still confirming this.

Last night I was logged into the beacon and playing with the audio levels to get a decode from your station using the min power. I reduced the audio to about 5% (which would bring the power down to 0.5W) and then the internet disconnected on the beacon and I was unable to restore audio back to give us 20W. That was at 18:20 last night. Your last spot was at 18:12. Tonight the audio levels will be restored and the internet restored and we can continue. We were on track for a great WSPR session last night until the problem happened.
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Re: 5MHz BEACON and PROPAGATION STUDY 5 months 4 weeks ago #1758

  • DF6MK
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Hi all,

thanks to Vivian for the login data.
Now I can place reception reports for your WSPR beacon ZS6KTS in the forum.
First I have to introduce myself.
I'm Werner, DF6MK, licenced since 1976, 74 years old.
My location is a very small village in the southeastern part of Bavaria, not too far
away from the Austrian (abt 25 km) and the czech (abt 80km) border.
I'm WSPRing for more than 4 years now and my only tx-antenna, a horizontal 84m loop 11m agl
is doing a good job on all bands from 80 to 6m (txing) and 630m to 6m (rxing).

Today it was good enough to receive 10 WSPR transmissions from ZS6, 9 from ZS6KTS and 1 from ZS6EHG.
As the databank of WSPR is not available, WSPR didn't upload the spots, I'll do that later on.
Looking for some more spots during the next days.
The picture shows the situation near 5.250 MHz.

73 Werner, DF6MK
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Re: 5MHz BEACON and PROPAGATION STUDY 6 months 1 day ago #1757

  • Viv ZS6VD
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Posted on behalf of Werner

Hi folks,

switched off my Perseus at 0630 UTC.
As you can see in the databank, no spots from Bavaria, sorry. ;-((
No trace at all from your beacon.
From abt 0145 UTC there has been a carrier on 5.250005 MHz, not local in my area because of heavy qsb.
SNR @ 2.5 kHz bandwidth ~ -30 dB at 0145 UTC, ~ -20 dB at 0500 UTC.
Neighbouring your frequency a busy channel of 3 kHz bandwidth (5.2465 - 5.2495 MHz) - no carriers, no bits, wide spread noise only with an SNR of 10 t0 15 dB. This channel should not have affected decoding your sigs - if there had been a detectable signal. The noise in the channel with a 400 Hz software filter has been between -110 dBm (S 3) and -90 dBm (S 6), more noise near sunrise.
Condx have not been good enough this time.
Will be looking for your beacon from time to time.
Wishing you a lots of spots

73
Werner, DF6MK
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Re: 5MHz BEACON and PROPAGATION STUDY 6 months 1 day ago #1756

  • ZS6SGM
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Hi All,

We seem to be having some success!

The band was not open for very long it seems and these decodes were received last night.

2014-02-21 19:46 ZS6KTS 5.250056 -26 0 KG43cw 20 5N7MJB JJ36rb 4216 325
2014-02-21 18:46 ZS6KTS 5.250056 -28 0 KG43cw 20 DF6MK JN68ik 8427 349
2014-02-21 18:40 ZS6KTS 5.250060 -27 0 KG43cw 20 F59706 JN07th 8583 342
2014-02-21 18:40 ZS6KTS 5.250060 -23 0 KG43cw 20 M40C IO70 9118 339
2014-02-21 18:40 ZS6KTS 5.250059 -20 0 KG43cw 20 M21C IO70 9118 339
2014-02-21 07:56 ZS6KTS 5.250040 -8 0 KG43cw 20 ZS6EHG KG44ce 28 0


WSPRReports21-feb-2014.jpg
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Re: 5MHz BEACON and PROPAGATION STUDY 6 months 2 days ago #1755

  • ZS6SGM
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More brain dumping

Location : Russia, Moscow
55 degr. 44' North , 38 degr. 12' East

Standard frequencies : 4996, 9996 and 14996 kHz

Radiated power : 5kW on 4996 and 9996 kHz; 8kW on 14996 kHz

Period of operation : 24 hours per day, except 08.00-16.00 msk
for maintenance as below:
on 4996 kHz : 1st wednesday of the 1st month of quater;
on 9996 kHz : 2nd wednesday of the 1st month of the quater;
on 14996 kHz : 3rd wednesday of each odd month;

Coverage : 20 degr. - 120 degr. East
35 degr. - 75 degr. North

Time signals A1X are given every second of 100 ms duration with a fre-
quency of 1 Hz. Minute pip is extended to 500 ms.

Hourly transmission schedule

m s m s
00:00 - 07:55 -- MON signals (no modulation)
08:00 - 09:00 -- transmitter is signed off
09:00 - 10:00 -- station's identefication is sent by Morse Code
10:00 - 19:55 -- A1X signals and identefication of DUT1+dUT1
20:00 - 29:55 -- DXXXW signals
30:00 - 37:55 -- N0N signals (no modulation)
38:00 - 39:00 -- transmitter is signed off
39:00 - 40:00 -- station's identefication is sent by Morse Code
40:00 - 49:55 -- A1X signals and identefication of DUT1+dUT1
50:00 - 59:55 -- DXXXW signals

Location : Eastern Russia, Irkutsk,
52 degr. 26' North , 104 degr. 02' East

Transmitting site : Angarsk

Standard frequencies : 5004, 10004, 15004 kHz.

Radiated power : 5 kW.

Period of operation : 24 hours per day, except 00.00-08.00 utc
for maintenance as below:
on 5004 kHz : 2nd tuesday, 3rd monday of each month
on 10004 kHz : 3rd tuesday, 3rd monday of each month
on 15004 kHz : 2nd tuesday, 3rd monday of each month

Coverage : 20 degr. - 60 degr. East
40 degr. - 70 degr. North

Time signals are given every second of 20 ms duration with a frequency
of 10 Hz.
Second pip is extended to 40 ms.
Minute pip is extended to 500 ms.

Hourly transmission schedule

m s m s
00:00 - 09:55 -- A1N signals or DXXW signals
10:00 - 17:55 -- N0N signals ( no modulation )
18:00 - 19:00 -- transmitter is signed off
19:00 - 20:00 -- station's identefication is sent by Morse Code
20:00 - 29:00 -- A1X signals and identefication of DUT1+dUT1
30:00 - 39:55 -- A1N signals or DXXW signals
40:00 - 47:55 -- N0N signals ( no modulation )
48:00 - 49:00 -- transmitter is signed off
49:00 - 50:00 -- station's identefication is sent by Morse Code
50:00 - 59:55 -- A1X signals and identefication of DUT1+dUT1

Note : time signals of 56th , 57th , 58th and 59th second after
(5n-1)th minute (n=1,2,3,...,12) is omited.
Last Edit: 6 months 2 days ago by ZS6SGM.
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