For the 1614Z pass, I made it a point to stay centered in the uplink, i.e. a few kHz of appropriate Doppler correction on 2M as SO-67 went by. This helped also. Andy W5ACM
----- Original Message ----- From: "Roger Kolakowski" <[email protected]> To: "OZ1MY" <[email protected]>; "Kostas Ioannidis" <[email protected]>; "AMSAT-BB" <[email protected]> Sent: Saturday, November 07, 2009 3:38 PM Subject: [amsat-bb] Re: SO-67 over Europe thanks for test > Yes it did help...2.5 KHz it is... > > Roger > WA1KAT > > ----- Original Message ----- > From: "OZ1MY" <[email protected]> > To: "Roger Kolakowski" <[email protected]>; "Kostas Ioannidis" > <[email protected]>; "AMSAT-BB" <[email protected]> > Sent: Saturday, November 07, 2009 8:29 AM > Subject: Re: [amsat-bb] Re: SO-67 over Europe thanks for test > > >> 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 > _______________________________________________ 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
