At 20:45 14/06/99 +0100, GW4ALG wrote:
I advised the operator that we tend to assume a receive IF bandwidth of
250 Hz and generally aim to maintain a 300 Hz separation from other
stations. (I believe that 300 Hz has been the figure quoted during LF
Group discussions and at the LF Forum.) I hope I did the right thing.
But with the fancy new receivers now available (which I'll probably
never be able to afford!), does the Group still feel 300 Hz to be a
reasonable separation for normal CW operation?
At 22:17 14/06/99 +0100, G4JNT wrote:
Over 10% of the entire band just to allow guard bands!!
What is wrong with some post Rx audio filtering - 50Hz BW is hardly
difficult even with analogue filters.
As I've now given up LF (it's become boring and 'just another operators
band') others can make more valid comments.
Maybe here in Belgium I am a bit out of the activity 'epicentrum' (= UK),
but so far I cannot remember to have heard more than 4 or 5 stations
tranmitting at the same time, so I think most of the time there is no
reason to go closer than 300Hz to another station. It is not because 1
operator has an excellent (non ringing !) narrow filter that all the others
have it.
So my advice : if possible keep 300Hz (or more) away from other stations.
If the other station is in QSO (especially with a 'weak' QSO-partner) than
even more care should be taken not to 'torpedo' the QSO.
73, Rik
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