Showing posts with label lw. Show all posts
Showing posts with label lw. Show all posts

27 Dec 2019

Another LW broadcaster closes

According to Southgate News another LW broadcaster (Europe 1)  is closing.

As a recent purchaser of a small internet radio, I can see more and more people moving to these: my unit is able to receive 40000 stations like locals from right across the planet. There is no interference, no fading - perfect. It is as easy to listen to a station in Sydney or Capetown as the BBC and the quality is as good.

Does this mean a greater chance of access to some of this spectrum for radio amateurs? In the USA people can get access to LW frequencies even without a licence with 1W and antennas shorter than 50 feet. It would be good if OFCOM allowed some limited access to some LW frequencies even if by NoV, with very limited power and with antenna restrictions, on a strictly non-interference basis. I have advocated a more liberal approach to spectrum generally before.   If power is limited and no interference is caused why not? If users are traceable they can be closed down very quickly if there is a problem.

In my view radio amateurs in the UK should be given access to all frequencies on a low ERP basis with an NoV and on a strictly non-interference basis. I guess this is too radical! Imagine the real value to radio science if this was possible. There would be few takers with an NoV, so not hard to police.

See http://www.southgatearc.org/news/2019/december/europe-1-on-183-khz-closure-confirmation.htm#.XgS2Q-iTLnE

22 Dec 2014

Longwave AM TX closing in Germany

Stefan DK7FC recently posted this to the RSGB LF group:
Hi LF,

Obviously there was a decision that DLF (Deutschlandfunk) will go QRT on LF 153 kHz on 31:12.2014!

Here is a German article about this decision: http://www.radiomuseum.org/forum/dlf_stellt_langwelle_ein.html

This makes me a bit sad on one side since i like the good old AM radio stuff. But on the other side, i know that i'm getting QRM from that transmitter which runs 500kW on a 350m high vertical antenna in 40 km distance. Probably there is a significant noise spectrum beeing radiated which i can see in that short distance. I can see it just a second before 20 o clock in the evening, when they switch from 500 kW to 250 kW. For 1...2 seconds, the AM carrier is off air, which lowers the noise background significantly. So maybe LF reception will be much better next year, i hope.

So maybe it is worth for some to listen for the last minutes of DLF LF transmissions on 31.12. this year :-(

73, Stefan/DK7FC