9870/ 9815 kHz HCJB test to Europe - Page 2

simone · 30-04-2007, 15:40

Here are my results from this morning, interference from -5 kHz from the beginning, also a weak signal at the start, did not watch it later.
Simone

Digger · 01-05-2007, 05:51

This morning at 0419 UTC there was a weak signal and no decoded audio until 0440 UTC. The segment 0441 - 0511 UTC resulted in 97% decoded audio with 17.46 kbps. From 0512 up until 0545 "our friendly neighbour", 'Radio Farda' [w3_radiofarda_dot_com], on 9.865 MHz started blaring pop music with signals up to S9 +30 dB.

I did not notice the change to Mode C and 9.18 kbps until 0554 UTC. Well, even that could not beat the QRM -5 kHz.

0559 UTC: R. Farda switched off. (I used the Morphy Richards in AM Mode on the same antenna to monitor Ra.Fa.).

The programme from 06 UTC in German was perfect. Perhaps it would have been better to transmit in Mode C and 9.18 kbps at the start and then switch to 17.46 kbps? At least at my location the HCJB signal stayed around S9 (> +30 dBuV) during the last half hour. QRT at 0629 UTC.

0719 UTC: Added the log.

maxpower · 01-05-2007, 06:49

Hi all!

Almost the same here with me. Reception seemed a little bit weaker today (or mode c works a little bit worse than mode c with the qrm at 9865).

I'm wondering: How many hops does the signal make here to germany? One? If so i think the signal rises at the point where sunrise begins at that region (somewhere over the atlantic ocean).

No local noise here today. Is it because of the work-free day in germany?

Here's the screenshot.

Stephan

Sixten · 01-05-2007, 07:43

This morning come HCJB in her very strong ,signal stringth S9+20/30db !!!
But I have very problem for splatter from VOR on 9880 . S9+30db

Small splatter also from 9865 . 0530 UTC switch HCJB over to low bitrate 9.18kbps and now very small problem for splatter . 0520 propagation go very fast down so signal stringth from S9+20db to S8 over 5min. and splatter from 9865 give more influence on DRM . But 0545 9865 close down and cannel is now clerar. log 132min and CDA 94% ok only for splatter problem.

I have tune up my 8m vetical to 9870.

df9rb · 01-05-2007, 07:58

Hi all,

perfect after 6:00 (station 5 kHz down closed). Signal around 100 µV on the 30 m long wire, weaker with the EWE or ALA1530.

Bernd, DF9RB

simone · 01-05-2007, 10:35

Best results from 0430- 0500, not much later even with the lower bitrate.
Simone

Digger · 02-05-2007, 04:25

With the racket caused by QRM from 5 kHz below, chances to decode HCJB are very small - at least in Switzerland.

Now after 0600 UTC without the QRM from -5 kHz, the reception is perfect. Still I am of the opinion that 9.18 kbps would be better up until 06 UTC, then switch to 17.46 kbps AAC+ and Stereo.

0650 UTC: Added the log. Definitely unwise to lower the bitrate when the QRM is gone and the conditions generally improve with the daylight.

Sixten · 02-05-2007, 06:03

With the racket caused by QRM from 5 kHz below, chances to decode HCJB are very small - in Sweden .

Signal stringth S9+10db but only CDA 65% for splatter. Peferct from 0600UTC 9865 transmitter close down.

maxpower · 02-05-2007, 06:45

Same with me here in the northwest of germany: 9865kHz is disturbing to much

17,4 kBit in Mode B until 5.50 UTC with good audio-sound, but bad decoding because of AM QRM, then switch to 9kBit Mode C with a more reliable signal but not so good sound. Would be better the other way round.(No QRM from 6.00 UTC - 6.30 UTC

Greetings,
Stephan

HC7AW · 02-05-2007, 13:54

Hi all,

Thanks for the reception reports. I will have to see what we can do about moving the frequency. My Frequency Manager is somewhere on a boat in the Amazon jungle looking for listeners to our Portuguese programs to Brazil (I hope he finds some

) I will work on it though and get back to you all.

Someone asked about the number of hops to Europe. It would be at least 3 and probably 4 to places like Sweden.

Doug

simone · 02-05-2007, 15:36

A weak and interfered signal, good decoding only in the last half hour with the low bitrate.
Simone

df9rb · 02-05-2007, 16:05

Hi all,

too much QRM from 5 kHz down...

Bernd, DF9RB

Funkerberg · 03-05-2007, 04:20

Report from 02.05.2007 , weak signal, small SNR, no Audio

Today nothing signal to receive ???

Digger · 03-05-2007, 04:57

Now, at 0455 UTC they've gone up to their 9.915 MHz QRG, but there is an AM (seems to be BBC) slap bang in the middle

HCJB is struggling with BBC there (9.915 MHz) just now, just after 0500 UTC...

Funkerberg · 03-05-2007, 06:36

Quote:

Originally Posted by Digger

HCJB is struggling with BBC there (9.915 MHz) just now, just after 0500 UTC...

at 0627 UTC too ....

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02-05-2007, 13:54	#25
HC7AW Registered User Join Date: Oct 2003 Location: Quito, Ecuador Posts: 111	Hi all, Thanks for the reception reports. I will have to see what we can do about moving the frequency. My Frequency Manager is somewhere on a boat in the Amazon jungle looking for listeners to our Portuguese programs to Brazil (I hope he finds some ) I will work on it though and get back to you all. Someone asked about the number of hops to Europe. It would be at least 3 and probably 4 to places like Sweden. Doug