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TOPIC: 5MHz BEACON and PROPAGATION STUDY

Re: 5MHz BEACON and PROPAGATION STUDY 6 months 1 week ago #1764

  • DF6MK
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Hi Stewart, hi all!
Before condx open the band, a screenshot from the 5.250045.
As you can see, there is a line like a carrier exactly on ...045 MHz. 50 or 55 seems to be much better. But lets test the frequency some days, before youtry a change.

73
Werner, DF6MK
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Re: 5MHz BEACON and PROPAGATION STUDY 6 months 1 week ago #1763

  • ZS6SGM
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The beacon seems to running nicely so far. Lets cross fingers.

Here is the list of unique spots last night (The second last col is the distance in km)

2014-02-25 00:44 ZS6KTS 5.250033 -23 0 KG43cw 20 W8AC EN91jm 13453 305
2014-02-24 18:48 ZS6KTS 5.250026 -23 0 KG43cw 20 DF6MK JN68ik 8427 349
2014-02-24 17:50 ZS6KTS 5.250027 -24 0 KG43cw 20 G3RCE IO90ku 9025 342
2014-02-24 17:50 ZS6KTS 5.250031 -22 0 KG43cw 20 F59706 JN07th 8583 342
2014-02-24 17:46 ZS6KTS 5.250029 -21 0 KG43cw 20 5N7MJB JJ36rb 4216 325
2014-02-24 17:22 ZS6KTS 5.250034 +9 0 KG43cw 20 ZS6EHG KG44ce 28 0


2014-02-25_085525.jpg
Last Edit: 6 months 1 week ago by ZS6SGM.
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Re: 5MHz BEACON and PROPAGATION STUDY 6 months 1 week 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: 6 months 1 week ago by DF6MK. Reason: Correcting a mistake
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Re: 5MHz BEACON and PROPAGATION STUDY 6 months 1 week 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 6 months 1 week 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 week 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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