DW Taldom 7515kHz

[ik1zyw]

Hi from a newcomer

On 2005-07-11 at 1949z I was able to receive Deutsche Welle on 7515kHz rather than the advertised 7390kHz from Taldom.

Very stable reception in Torino, Italy, using an IC706MKiiG and a 2.8m long center-loaded vertical on the balcony.

Is this a permanent frequency change? It has not been advertised on DW's schedule, nor on drm.org "LiveBroadcast" page.

The attached image shows Dream and the receiver during reception.

Please, which email address should I use to submit a reception report and qualify for a QSL?

[dk8cb]

Originally posted by ik1zyw
Please, which email address should I use to submit a reception report and qualify for a QSL?

Try
drm at dw-world dot de

Roland

[carknue]

I think that it comes from Taldom. But the frequency is not clear. I have something inside the DRM spectrum as you can see in the snr spectrum. This needs a 24 dB or higher SNR for good audio decoding.

EDIT: Interfering signal disapeared just after 19:00 UTC

[dk8cb]

Originally posted by carknue
This needs a 24 dB or higher SNR for good audio decoding.

Hi Carsten,

it works perfectly well even in moments when the SNR is just 22 dB. According to my experience it would also work well with an SNR of only 19 dB, at least with my receiving setup but perhaps the result depends on the kind of phenomenon that is limiting the SNR.

Roland

[dk8cb]

Hi,

good reception on this frequency during my logging period which I accidentally ended at 20:31 UTC, but reception continued like that until now (20:55).

There was a little interference from Radio Sofia Bulgaria and its more than +/- 10 kHz wide broadcast on 7505 kHz for a few minutes just after 20:30 UTC.

It seems to have become a fashion to use extremely wide bandwidths on HF. I have seen it a lot recently.

Roland

[simone]

Hi Andrew and all,
pretty good until 2054, then a period with strong interference, see attachment
73, Simone

[FritzWue]

Here exactly the same interference as in Carsten's SNR screenshot.
At least for me this is no real NIB frequency.
To the end the skip got too long for me and I ended up in the dead zone.
But good propagation so far if you can find a better frequency.

[carknue]

After 19:00 I had no interferences anymore. Frequency was quite clear, I only had maybe a local interference around 7519-7521 khz, but it was very weak. At the end signal got much weaker so no audio.

[carknue]

Hi Andrew,

very good reception today. Signal was always quite strong today. Between 21:22 and 21:30 there was a carrier around 7511 khz. The audio led turned red, but there were no droupouts audible.

[simone]

Hi Andrew,
pretty good results yesterday, see attachment
73, Simone

[Andreas]

I just listened from 19:10 UTC until now.

Audio was only 50% with Mini Windom Antenna.
Could be improved up to 100% for one hour and 95% the last 30 minutes by using a Grahn GS3/ML2 Loop Antenna.

Exact tuning is not quite easy with a hardware receiver, where you have neither direct audio feedback nor instant visual information about signal quality.

When I have got more experience with my hardware I will post a report in the receiver and antenna forum.

Greetings from Hamburg!

[carknue]

I'm not quite sure, why the snr was 4 db lower than the last days, but still perfect reception. I think that the new frequency is a very good choice.

[simone]

Hi Andrew and all,
good results again tonight, see attachment
73, Simone

[simone]

Hi Andrew and all,
perfect reception again tonight, see attachment
73, Simone

[carknue]

Very good once again.