[time-nuts] Thunderbolt & Lady Heather 48 hour precision survey
J. L. Trantham
jltran at att.net
Sat Nov 27 12:28:23 EST 2010
Just curious. Does the 'black' background of your image resemble the
horizon at your location? Trees, buildings, towers, etc.?
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of WarrenS
Sent: Saturday, November 27, 2010 11:15 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Thunderbolt & Lady Heather 48 hour precision survey
Right, For best performance, in fix mode operation, for a Tbolt, you don't
want to run at zero (or 5) degrees.
This is just one test in a series of necessary test, if one wants to improve
their Tbolt to better than the Default settings.
The zero degree mask is a temporary setting so that the Tbolt can do a full
antenna signal strength vs. position survey using Tbolts's "SAS" command.
The purpose of which is to find the BEST elevation setting, which turns out
to be more like 15 to 35 deg for the typical Tbolt setups I've seen.
Attached is a limited survey where the finial cutoff was set at 20 degrees.
The cut off was set there because the full survey showed that in this case
"BAD" things where starting to happen around 20 degrees
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