--- On Tue, 2/9/10, Auke de Jong, VE6PWN sparkyci...@shaw.ca wrote:
From: Auke de Jong, VE6PWN sparkyci...@shaw.ca
Subject: [amsat-bb] Re: AO-51 Signal Strength Post Flip
To: amsat-bb@amsat.org
Received: Tuesday, February 9, 2010, 9:42 PM
Another observation
from DO33 (yo Bernhardt
Hi John,
Have you looked to see what power levels we were running at the
comparision times? Maybe that's part of it...
The orientation should be back to the way it was before the flip
experiments. What might be differnet is power budget and therefore
signal strength.
Anyhow, it's good to ask
By the way, John--a handy place to spot check power levels at various
dates is here:
http://www.amsat.dk/oz7sat/tlm/view.php?sat=ao51 Just put in the
dates you want to see.
And the full telemetry archive is on the AMSAT FTP server, so folks
can grab, decode, and and analyze anything they want,
Thanks for the reports.
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
You are on-the-nose John.
Currently, I AOS and LOS AO-51 at higher elevations than before the initial
flip. During high passes, the downlink is no longer DFQ or is as strong as
before, and there are more fades (was better with leaves still on the trees!).
I have questioned my antenna
Another observation from DO33 (yo Bernhardt), I've always had trouble
hearing this bird well enough to work from my home station, as I have my
antennas at fixed elevation, and manually-rotated via channelmaster... AO-51
has been consistently easier to hear AFTER it has passed overhead on
