Monday, May 23, 2011

WSPR on 50 MHz...

Over the last 2 weeks or so, I have used WSPR on 50 MHz and I have heard several stations....mainly Western European countries and a bit of DX in the form of CN8LI in Morocco.

The screenshot above is from 50 Mhz today (23rd May 2011). No WSPR stations heard but you can see the lines above about 5Hz apart. At first, they might just look like some sort of computer interference but these are actually TV carriers. The band was open to Eastern Europe and the TV transmitter was probably located somewhere there. Looking at the DX-Cluster and listening down lower in the band, then it was certainly open to Poland and the Czech Republic at the time.

It also shows the limitations of WSPR on VHF.....band was open yet no WSPR stations heard. Outside of Western Europe and the USA, there is certainly a lack of activity from other areas.

2 comments:

PE4BAS, Bas said...

I had the same experience John, also the strong TV carriers. But I've een heard by CN8LI with my 1W signal. So far my best WSPR DX. 73, Bas

David Hamilton said...

hi if you go to where the tv carriers are ie 48.239 - 59 49.739 - 59 etc in usb and use a spectrum program like spectrum lab or even digipan for psk and look at the offset list on g0che web page you can see where the tv carriers are coming from and its a great indicator to where the band is open at your qth 73 david