Hi All,
Yes in telemetry (also known as educational) mode we have around 300mW and
this is a much higher average RF output than when in amateur (also known as
transponder) mode.
Total current drain is therefore greater when in educational mode. This is
convenient because we had planned that educational mode would be more useful
when the spacecraft is in local daylight - ie schools would be more likely
to be open. This is the primary mission of course. Also amateurs often have
to work during the day so would appreciate the availability of the
transponder during the local evening passes.
We were not, before launch, 100% certain that we would have a good enough
power budget to run the transponder during every eclipse period but, at the
moment, this seems to be ok - we still have quite a positive power budget.
Its a bit late here and we are quite tired after three very hectic days but
I hope the above explanation makes some sort of sense:)
best 73
Graham
G3VZV
-----Original Message-----
From: Stefan Wagener
Sent: Saturday, November 23, 2013 11:13 PM
To: Paul Stoetzer
Cc: AMSAT BB
Subject: [amsat-bb] Re: Funcube-1 - Ao-73
Good point.
Now from what I read they are running the telemetry mode at the same time
with lower power.
More food for thought :-)
On Sat, Nov 23, 2013 at 4:56 PM, Paul Stoetzer <[email protected]> wrote:
Would the transponder mode potentially have lower average power
consumption than full power telemetry mode?
In full power telemetry mode, it's putting out 300 mW the whole time. In
transponder mode, it's only putting out 30 mW + whatever it's taking to
relay the signals it's receiving. The transmitter would only be putting
out
full power when it's in use.
Unless my thinking is completely wrong here...
73,
Paul, N8HM
On 11/23/2013 5:48 PM, Stefan Wagener wrote:
Great!
Congratulations. I guess we have to wait until the sat is in the "dark"
to
use it here in NA.
Just wondering why you would activate the transponder without having
power
through the solar panels and consequently discharging the batteries
(unless
that's the intent). Maybe I am missing something....
On Sat, Nov 23, 2013 at 4:34 PM, Andre' v Deventer <
[email protected]> wrote:
Just had my 1st 2way SSB qso via Ao-73 with Keith ZS6TW.
Strong s7-9 without p/amp and excellent SSB audio.
Congrats to the team !
73 - andre ZS2BK
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