Luc, Please look at Mike DK3WN's post to the -bb on 19th December. The FM and the AFSK Digital are operational at the "same" time. If you no longer have that mail please listen to the audio at http://www.dk3wn.info/p/?p=10091 Best regards, Colin VK5HI.
> -----Original Message----- > From: [email protected] [mailto:[email protected]]on > Behalf Of Luc Leblanc > Sent: Monday, 21 December 2009 15:25 > To: [email protected] > Cc: [email protected] > Subject: [amsat-bb] Re: XW-1 QSO and packet attempt > > > On 20 Dec 2009 at 22:05, Sebastian wrote: > > Date sent: Sun, 20 Dec 2009 22:05:48 -0500 > From: Sebastian <[email protected]> > Subject: [amsat-bb] Re: XW-1 QSO and packet attempt > To: AMSAT BB <[email protected]> > > > Luc (VE2DWE) has some magic in his antennas, as I consistently > heard him pretty much all through the pass. > > > > John K8YSE wrote: It could have been that the BBS stops the voice > repeater but there were times that VE2DWE was making it (although > noisy) and my signal was not there at all. Maybe the amount of > deviation on the tone makes a difference when there are a lot of > competing signals on the input. > > As the bird sank low on the horizon on the way north, it was again > possible to get into it. Normally there are not many who get > into any satellite that is in northern Canada. Less congestion on > the input gives you a better chance. > > > > > I heard Drew mention that perhaps due to the PL tone and the > large number of stations trying to use the repeater, very few > stations were able to make a QSO. > > > > > > Three problems: as with AO-51 the CTCSS tone is blocking a lot > of station it was the same when ISS cross band repeater was on > too. When XW- > 1 was over central USA his footprint was covering nearly all the > Northern continent including central america and the Carribean > island with > all the Northern satellite station in the same footprint it > should be a challenge at the satellite receiver to have one > station able to > make it through that's the second one and for the third one the > packet BBS also is competing at the receiver and i'm guessing at the > transceiver too as i never heard the packet transmission over a > phone transmission. Without any knowledge of the ways the transmitter is > voting or who's got the priority first it is hard to tell if > this packet turn over is not also a contributing factor as many of my > transmissions where shut down to just get a packet burst afterwards? > > I missed the linear transponder but i'm guessing it will be "The > mode" on XW-1 as per what i heard from the recordings. > > It is a great sat and as i wrote a nice christmas gift with > SO-67 as a suggestion the FM/BBS mode can be put in service in > light traffic > pass as it is permitting less traffic than the linear > transponder, but it can be an alternance of both. Let see what > the european pass will > give as the whole europe will be in the same footprint!!!. > > For the magic in my antennas there is none that i know but > operating in full duplex is a big help as you can choose when to > key the TX but > as we cannot get a constant TX from the satellite we probably > often transmit over each other Letting the receiver only > activated by the > carrier will at least make us hear through the capture effect > and it will tell us when it's time to TX? It will not solved the > tailgating > problem but it will help. > > P.S. There is also a trick on XW-1 as there was one on SO-67 i > will have to check it again but he's not much nicer than the one > i discover > on SO-67 fighting against the 3 seconds timer... Just remember i > wrote "fighting"! > > > "-" > > > Luc Leblanc VE2DWE > Skype VE2DWE > www.qsl.net/ve2dwe > DSTAR urcall VE2DWE > WAC BASIC CW PHONE SATELLITE > > > _______________________________________________ > 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
