Ken
It could be tight at times especially for those with a good RX/Antenna
therefore the ability to hear a good many NDB'S and try to squeeze into a
vacant slot. Another problem for those with Ferrite rod and uProbe RX
antennas they will not hear a lot of these Beacons and therefore could
well
be transmitting on top of them.
This was an unusual slot to pick for radio amateur use.
de mal/g3kev
----- Original Message -----
From: "Ken" <[email protected]>
To: <[email protected]>
Sent: Tuesday, February 28, 2012 10:10 AM
Subject: LF: RE: Re: NDBs & WRC-12 LF band allocation
Dear Jim, Mal, LF Group.
All I was trying to say in my message was 'if we could hear say 10 or 12
NDBs in the UK, would there be sufficient bandwidth left between each NDB
for us to safely operate using whatever modes we are assigned' Sorry if I
caused any confussion.
73s
Ken
M0KHW
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of James Moritz
Sent: 28 February 2012 00:03
To: [email protected]
Subject: LF: Re: NDBs & WRC-12 LF band allocation
Dear Mal, Ken, LF Group,
G3KEV wrote:
>The band should be licensed for CW operators only so that they could
>recognize and read the CW beacons and AVOID >them.
One does not need to be a morse code expert to realise there is a strong
signal repeating the same dots and dashes 24 hours a day on a particular
frequency. One just needs a little common sense...
>Has OFCOM thought of this. Neither should there be any amateur
unattended
>BEACONS to jam the Primary user >Beacons even unintentionally.
Whether the transmission is a "manual" QSO or automated, or if an NoV for
an
unattended beacon was being applied for, the important thing for the
amateur
is to be aware of nearby NDBs and avoid transmitting on their
frequencies -
this is a matter of observation and advance planning, not operating. If
a
couple of amateurs are yakking away about the WX on a NDB frequency, in
CW
or any other mode, there is no way that the NDB will be able to break in
at
the end of one over and say "excuse me chaps, but there are aircraft
trying
to get a bearing on this frequency; would you mind QSYing - thank you so
much" ;-)
Think about this from the Primary User's point of view - if someone
navigating an aircraft sets their ADF receiver to a particular beacon
frequency and hears an assortment of amateur-generated morse code mixed
up
with the beacon ID, this is likely to cause confusion or error. So there
is
a strong argument for amateurs not to use morse code at all in this
frequency range. It would be better to use totally different types of
transmission that would not be confused with a NDB beacon signal.
Cheers, Jim Moritz
73 de M0BMU
