Top band DX-ing is real ham radio challenge. 160m is also referred as the "Gentleman's band"...
160 meters - DX-ing on the Edge...

The "Forbidden DX frequencies" table on 160m

4. března 2007 v 12:11 | Petr, OK1RP |  Operation topics
Hi all,
from my experiences with DXing on Topband I found that there are some frequencies which are not usable in some DX locations cause of local heavy QRM over there or permanent local BC interfered signals or other problems.
These frequencies are permanently unusable or even forbidden for DXing in that DX location and its not efficient to calling CQ or looking for DX from that location overe there...
In my oppinion it will be very usefull for all Topband enthusiasts to have the table of that "forbidden QRGs" available for quick check if needed. This table will be updated as many time as possible.
QRG (kHz)Forbidden range (kHz)DX-locationComments
18201819 - 1823JApermanent BC QRM in JA around 1820
18181815 - 1821ZLstrong QRM from local GPS correction on 1818
Informations about another "forbidden QRGs" in Your locations are welcommed for sure!
73, Petr OK1RP

Buď první, kdo ohodnotí tento článek.


1 Petr, OK1RP Petr, OK1RP | E-mail | Web | 16. února 2009 v 18:46 | Reagovat

Message from Carl, SM6CPY:

I can agree with DJ5DT about the "beep" qrm on the lower part of the band.

In Sweden, I can hear 3 beeps. One strong, the second one a little weaker

and the third one very weak as if the signals were transmitted out into

three directions (or a fast rotating antenna is being used). The signals

have been there for years. I remember them from the 90´s. But, if I´m not

totally wrong, they were gone for a couple (?) of years. Some nights it´s

impossible to use frequencies below 1824. The signals are coming in from

the Baltic area but I don´t know what it is !

73 Carl/SM6CPY

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