Re: LF: VO1NA - carrier

[Markus Vester <markusvester@aol.com>]

Hi Edgar,

 

if I remember right, the DCF39 idle carrier is not exactly on 138830 Hz but about 0.55 Hz up. The frequency is also not very stable and there is a ~ 0.1 Hz spread from the telegrams, so in a narrow spectrogram it may look more like a noise band.

 

All the best,

Markus (DF6NM)

-----Ursprüngliche Mitteilung----- 
Von: edgar <edgarjtwining@virginbroadband.com.au>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Mi, 9 Dez 2015 10:13 pm
Betreff: LF: VO1NA - carrier

Results from last night.

Data from Spectrum Lab EbNaut instance.

https://dl.dropboxusercontent.com/u/101251787/VO1NA/data%209-12-2015.zip

rsNTP was running to correct the PC clock.

An attempt to use a GPS unit failed, as Spectrum lab reported several errors.

Spectrum.

https://dl.dropboxusercontent.com/u/101251787/VO1NA/VO1NA%209-12-2015%20250%20ms.gif

Changes were made to the Spectrum lab set-up.

A long term average plot was added. 1440 minutes, which may be too long.

The spectrogram was added.

DCF39 frequency was added to check if the set-up is working.

It appears that it is not! As no DCF39 appeared.

Some time will be spent checking the receiving set-up is functioning properly.

There are issues with the internet connection and PC which need to be resolved.

Thank you Joe for your signal.

Regards,Edgar
Moonah, Tasmania.