A few questions for some of the groups planning to fly next
month.
I define "time-slotting" as the ability to keep your
transmissions between X and Y seconds after the minute, using the time reported
in the NMEA output from your GPS.
EOSS: Can your 144.34 payload time-slot
its beacons? What callsigns will you be using?
TVNSP: I believe you're using the
KPC-3+ second serial port to control transmissions for your 144.34 payload - is
this correct? If so, you can therefore time-slot. Are you planning
to fly a backup beacon - if so on what frequency? What callsigns will be
used?
WB8ELK: Can you time-slot your 144.34
beacons? If not, does it beacon every X seconds, or is it
semi-random? What call do you plan to use?
KD0FW: Is it OK to change your simplex
repeater to 147.585, or do you have another frequency you'd prefer?
Traveler: You sent me e-mail earlier
that your programming will not time-slot. Is it every X seconds, or
semi-random? I think as long as it's not too close to 60 seconds for a
repeat interval we shouldn't have a problem.
ANSR: since you're transmitting on 70cm
you can set up your telemetry as you wish.
I would like to use a 70cm frequency for chase comms - if we
use 2m we'll desense our data reception (though ANSR has the opposite
problem). We'll probably select a convenient "rally point" near the
predicted landings for everyone to head towards after they recover their
payloads so everyone knows where to go if they lose comm with the rest.
Depending on where we end up going, cell phone coverage ranges fair to
none. I have no problems using the NSTAR simplex repeater (if it flies) as
a chase frequency - this will let distant stations listen in on the
fun.
Once I get answers back on the above, I'll work out a strawman
proposal for the division of clock times and intervals to be
used.
73 de Mark N9XTN