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Förstasidan arrow e-Journal nyheter arrow Nyhetsarkiv arrow e-Journal nyhetsarkiv arrow AMSAT-SM-nätet 14/2 2010
AMSAT-SM-nätet 14/2 2010 Print
Written by Lars Thunberg   
Feb 21, 2010 at 07:44 PM

Hej,

Dagens nät på 3740 Khz Klockan 10.00

Deltagare

SM4EFW
SM4JLX
SM4XIO
SM5HL
SM6NZV
SM7WSJ

*Rymdfärjan uppe
http://www.youtube.com/watch?v=W-aDSv494v4&feature=player_embedded#

*ISS frekvenser (samt några som används vid rymdpromenader)

http://www.issfanclub.com/frequencies

*AO-51

Satelliten upplevs enligt en del rapporter svagare i signalstyrka numera.

http://www.amsat.dk/oz7sat/tlm/view.php?sat=ao51

Det kom ett intressant meddelande via e-post listan.

Again, I encourage you all to research the power levels OUT at the
comparison times. That has to at least be considered in the
discussion.

For example:

Power is "watts" out

Date 435.150 435.300 Battery V

Before flips

2009-02-09 19:27:04 oz7sat 0 0.779 0.859 7.660 <--- 859 mW one
year ago! compare to today, listed below!

2009-10-25 18:17:01 oz7sat 0 0.452 0.617 7.868

2009-11-25 17:41:51 oz7sat 0 0.361 0.744 7.581 <-- 745 mW before the flip!

2010-01-15 18:45:31 oz7sat 0 0.437 0.462 7.892

Currently:

2010-02-09 17:19:06 oz7sat 0 0.452 0.475 7.752 <-- 475 mW today!

We are running a few hundred milliwatts below what we were running
pre-flip, and a good bit less than we were able to run a year ago.
So you all may be seeing the difference between 600-850 mW and 475 mW.
It's real.

Yes, the bird is aging, and we're doing the best we can to manage the
resources available on-board (the limits now are orbit and battery
condition) . The full illumination periods in the last year or two
have taken their toll on the batteries. What will be interesting is
to see what happens when we return to periods of eclipse!!
Personally, I don't expect the situatio to improve, although it might
be that the batteries will cool and some capacity will return. But
we'll need it with eclipses.

73, Mark N8MH

*Övrigt
Solens aktivitet ökar stadigt.
Bra aktivitet på satelliterna och undertecknad har hört följande SM
stationer SM0NZY SM5CUI SM7BHH.
FO-29 i mycket bra form.

73 Håkan SM7WSJ


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