Your point was "QRM is inevitable -- live with it".
My point is "QRM from unattended stations is preventable; stop making
excuses and fix it".
73,
Dave, AA6YQ
--- In [email protected], "DuBose Walt Civ AETC CONS/LGCA"
<[EMAIL PROTECTED]> wrote:
>
> Dave,
>
> <sticking tongue in cheek>
> This is a sane idea and a good operating practice...are we (hams)
suppose to be sane and use good operating practices since we are
sharing all these frequencies?
> </sticking tongue in cheek>
>
> Thanks for making my point. What technology can't do, good manners
and operating practices can.
>
> Walt/K5YFW
>
> -----Original Message-----
> From: [email protected]
> [mailto:[EMAIL PROTECTED] Behalf Of Dave Bernstein
> Sent: Wednesday, December 13, 2006 2:23 PM
> To: [email protected]
> Subject: [digitalradio] Re: Dec 15?
>
>
> The scenario where neither A or B can hear C or D, but that C or D
> are QRM'd by transmissions from A or B is indeed possible, but is
> relatively infrequent. No one expects A or B -- whether they are
> attended or unattended -- to suspend transmission to avoid QRMing a
> station that neither can hear.
>
> The more common scenario is that A can't hear C or D, but B can
hear
> C or D. A contacts B. If B is attended, he or she detects that the
> frequency is in use, and either remains silent, or transmits
> something quick like "QSY to 14085". If B is unattended and without
a
> busy frequency detector, its responds to A, QRMing C and D.
>
> It is the latter scenario that is responsible for most of the QRM
> from unattended stations responding to attended stations (often
> referred to as "semi-automatic" operation). The fact that we can't
> cure the first scenario is no excuse for not curing the second
> scenario, especially given that the second scenario is far more
> common than the first scenario.
>
> 73,
>
> Dave, AA6YQ
>
>
>
> --- In [email protected], "DuBose Walt Civ AETC
CONS/LGCA"
> <walt.dubose@> wrote:
> >
> > A & B hear each other but dont' hear C & D. But C hears either
or
> both A and B.
> >
> > If C is receiving D, then A or B is QRMing C.
> >
> > Walt/K5YFW
> >
> > -----Original Message-----
> > From: [email protected]
> > [mailto:[EMAIL PROTECTED] Behalf Of Danny Douglas
> > Sent: Wednesday, December 13, 2006 12:22 PM
> > To: [email protected]
> > Subject: Re: [digitalradio] Re: Dec 15?
> >
> >
> > HMMM By whom is C being QRMd. You didnt say who he is hearing as
> QRM. I am
> > assuming that C is hearing either A or B or even both? In this
> case, if A
> > and B were already in QSO, then C and D should QSY to start their
> QSO
> > elsewhere.
> >
> > If the C and D QSO was already underway, and A and B started up,
> and they
> > were not hearing either C or D (not probable as usually prop is
two-
> way if
> > it is strong enough for QRM) then C and D would either put up
with
> it, or
> > move since under this condition, they cant tell the other pair
that
> the freq
> > is in use.
> >
> > It is prudent for both parties, starting a QSO to insure that
> neither of
> > them is intefering with an ongoing QSO, and by both checking to
see
> (both
> > automatic stations having the capability) if the freq was QRL -
it
> would
> > avoid inteference to others.
> >
> >
> > Danny Douglas N7DC
> > ex WN5QMX ET2US WA5UKR ET3USA
> > SV0WPP VS6DD N7DC/YV5 G5CTB all
> > DX 2-6 years each
> > .
> > QSL LOTW-buro- direct
> > As courtesty I upload to eQSL but if you
> > use that - also pls upload to LOTW
> > or hard card.
> >
> > moderator [EMAIL PROTECTED]
> > ----- Original Message -----
> > From: "DuBose Walt Civ AETC CONS/LGCA" <walt.dubose@>
> > To: <[email protected]>
> > Sent: Wednesday, December 13, 2006 12:56 PM
> > Subject: RE: [digitalradio] Re: Dec 15?
> >
> >
> > > If A and B can hear each other but can't hear C or D then if A
or
> B
> > transmits and C is receiving D, then C is QRMed and can't copy D.
> > >
> > > This is something that happens quite often on HF and I don't
> think that
> > any amount of coding willremedy this problem.
> > >
> > > Walt/K5YFW
> > >
> > >
> >
> >
> >
> > Connect to telnet://cluster.dynalias.org a single node
> spotting/alert system dedicated to digital and CW QSOs.
> >
> >
> > Yahoo! Groups Links
> >
>
>
>
>
> Connect to telnet://cluster.dynalias.org a single node
spotting/alert system dedicated to digital and CW QSOs.
>
>
> Yahoo! Groups Links
>
