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RE: Mode A v is-a-vis mode-B.



Log captured at Feb 23 at 1900 UTC
132 mode A records, 280 mode B records. 
63 reports of Mode B with no contacts. 217 reports of Mode B with contacts.
67 reports of Mode A with no contacts. 65 reports of Mode A with contacts.

Most frequent stations reports:
86 reports from F3ZD (55 of those reports are mode B)
56 reports from G1WPR (46 of those reports are mode B)
73 reports from K3SZH (48 of those reports are mode B)
51 reports from PH7PCF (39 of those reports are mode B)

The only issue is the data sample itself. Voluntary reporting has no
assurance that the data is representative of actual usage. Since the mode
switch currently should be about 50/50, the station's reports should reflect
that if an accurate sample were being provided. The one that comes closest
is F3ZD with at 64/36 ratio.

Kenneth - N5VHO

-----Original Message-----
From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org] On Behalf
Of john hackett
Sent: Thursday, February 23, 2006 5:05 AM
To: eu-amsat@yahoogroups.com
Cc: w0eec@AMSAT.Org; allan_gm1sxx@hotmail.com; Terry.Bromley@btinternet.com;
akwak@chello.nl; Amsat-bb@AMSAT.Org
Subject: [amsat-bb] Mode A v is-a-vis mode-B.

Hi All,
        Re: the mode-A v mode-B debate.

The AO-7 log  <http://www.planetemily.com/ao7/ao7log.php> speaks for itself
... especially considering the satellite has switched between modes A & B
every 24 hours for the last few weeks.

Of course, the equipment available in the shack has something to do with it
but none-the-less, the entries in the log speak for themselves as to which
of the two modes is the more popular among the general populace of amateur
satellite operators.

(The experienced operators are of course aware of other reasons why mode-B
is preferred).

Just thought I'd bring this interesting fact it to your attention.

73 John.   <la2qaa@amsat.org>
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