doppler effects both paths, up and down. so at least if everyone is listening to a 100Hz freq tone at 100 Hz, we are all on the same freq.
Joe WB9SBD The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 6/9/2011 9:35 AM, n...@lavabit.com wrote: > OK my brain may be playing tricks, but if you vary only your transmit > frequency such that you always hear yourself on the same downlink > frequency, isn't it true that the other station may not necessarily be > hearing you on the same downlink frequency and is chasing you anyway? > Your doppler is +5kHz (for example) on the receive, the bird is just about > to pass overhead of me though so my receive ferquency goes rapidly from > +2kHz to -5kHz, your transmit tuning has no relation at all to what > frequency I am listening on. Then the bird goes past you and you suddenly > switch down 5kHz, so I have to follow you on my receive. > > Or am I nuts? (Quite possible, come see where I work and you will > understand!) > > Jerry > NØJY > >> I always varied the transmit. >> >> This way the person I'm talking to as well as any other listeners are >> all on the same freq listening. >> > > > _______________________________________________ > Sent via AMSAT-BB@amsat.org. 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 AMSAT-BB@amsat.org. 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
