[amsat-bb] Re: SO-67 over Europe thanks for test

[OZ1MY]

Hi Roger and the -bb,
>From memory it takes up less than 12.5 kHz which is the
channel spacing on 2 meters (In Region 1 at least).
Frequency deviation like 2.5 kHz (old 3.5 kHz and even some
have 5 kHz deviation).
It is the frequency deviation that is a the issue with SO-67 (I think).
If you run too high deviation on the uplink the LF to the transmitter will
make it deviate too much. Even for a normal (old) setting on the receive
side.

The Carson rule says: Signal Bandwidth = 2 times (Deviation + modulation
frequency).

Did that help ?
73 OZ1MY
Ib
----- Original Message ----- 
From: "Roger Kolakowski" <rogerkola at aol.com>
To: "OZ1MY" <oz1my at privat.dk>; "Kostas Ioannidis"
<kostas.ioannidis at gmail.com>; "AMSAT-BB" <amsat-bb at amsat.org>
Sent: Saturday, November 07, 2009 3:03 PM
Subject: Re: [amsat-bb] Re: SO-67 over Europe thanks for test


> How "narrow" is FMN?
>
> Roger
> WA1KAT
>
> ----- Original Message -----
> From: "OZ1MY" <oz1my at privat.dk>
> To: "Kostas Ioannidis" <kostas.ioannidis at gmail.com>; "AMSAT-BB"
> <amsat-bb at amsat.org>
> Sent: Saturday, November 07, 2009 6:40 AM
> Subject: [amsat-bb] Re: SO-67 over Europe thanks for test
>
>
> > Hi Kostas,
> > If you do not have FMN on your radio, turn the mike gain down and/or
> > do not shout :-)
> > 73 OZ1MY
> > Ib
> > ----- Original Message -----
> > From: "Kostas Ioannidis" <kostas.ioannidis at gmail.com>
> > To: "OZ1MY" <oz1my at privat.dk>
> > Sent: Saturday, November 07, 2009 12:20 PM
> > Subject: Re: [amsat-bb] SO-67 over Europe thanks for test
> >
> >
> > > Goodmorning,
> > > As the previous operator said thank you a lot for this great sounding
> > > sat! It was booming all tha pass.
> > > A lot of traffic on the air! But the narrow FM is an issue for those
> > > who do not use it...
> > >
> > >
> > >
> > >
> > > 73 de SW1IXP
> > >
> >
> > _______________________________________________
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>
>