Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]

Re: VLF: QRM puzzle - why not the same in a split screen on SL?

To: <[email protected]>
Subject: Re: VLF: QRM puzzle - why not the same in a split screen on SL?
From: "Markus Vester" <[email protected]>
Date: Thu, 7 Apr 2011 23:50:28 +0200
Importance: Normal
References: <[email protected]><[email protected]> <[email protected]> <[email protected]> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
Hi Stefan,

>> No!
 
...we are dreamers, so never say never ;-)

>> There are problems on each frequency. If we move 6 Hz up, others will have problems at 8976 Hz. We've got a good demonstration of that "simply QSY a bit" on the EU window on 137 kHz..
If I recall right, the problems were actually solved _after_ moving the Eu slot by 6 Hz (from 136178 to 136172).
 
>> And 8976 Hz is closer to 9000 Hz where some stations have problems due to LF BCD stations, producing sidebands +-10...20...30 Hz.
Yes, I'm aware of that. But 9000 - 30 = 8970.00! 

>> 73, Stefan
Here's a five-day spectrogram showing the railway-generated interference situation here: 
Neither frequency is perfectly QRM free, but the area above 8971 is generally clearer here.

Best wishes,
Markus (DF6NM)
 
 
Am 07.04.2011 19:20, schrieb Markus Vester:
Should we move the Dreamer's band 6 Hz up?
 
Best 73,
Markus (DF6NM)
<Prev in Thread] Current Thread [Next in Thread>