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" <[email protected]> To: "OZ1MY" <[email protected]>; "Kostas Ioannidis" <[email protected]>; "AMSAT-BB" <[email protected]> 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" <[email protected]> > To: "Kostas Ioannidis" <[email protected]>; "AMSAT-BB" > <[email protected]> > 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" <[email protected]> > > To: "OZ1MY" <[email protected]> > > 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 > > > > > > > _______________________________________________ > > Sent via [email protected]. Opinions expressed are those of the author. > > Not an AMSAT-NA member? Join now to support the amateur satellite program! > > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > > _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
