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[aprssig] An Empiracal Analysis: 6 meter APRS or meteorscater?

JJ jjesson at voyager.net
Sun Jan 27 18:37:48 UTC 2008


I would think a slower but improved C/N protocol, e.g. WSJT, should cut the
power requirements and get through the local noise...thoughts?

 73, Joe KB9LZB

----- Original Message -----
From: "Ev Tupis" <w2ev at yahoo.com>
To: "TAPR APRS Mailing List" <aprssig at lists.tapr.org>
Sent: Thursday, January 24, 2008 8:18 AM
Subject: [aprssig] An Empiracal Analysis: 6 meter APRS or meteorscater?


> Ok, now we're cookin' with gas.  Here's what 'ya got to work with...
>
> Bob, I've taken the information that you found on the web about several
(commercial?) meteor-scatter stations that seem to operate successfully and
re-presented the data in chart format for easier comparison.
>
>
> Freq  Pwr    Antenna Data  Msg.  RX    DX to  Success  Rate
>              Gain    Rate  Size  Stns  RX stn Min/hr Max/hr
> (MHz) (W)    (dBd)  (kbd)  (b)   (#)   (mi)   (full deliveries)
> ----- ----   -----   ----  ----  ---  -----   ----    ----
>
> 38     200   10+10      2   150    1    600     18      46
> 38     400   10+10      2    50    1    500     15      60
> 38     400   10+10           50    1   1000      8      30
> 38     600    2+10      2   130    4    600    360    1200
> 38    2000    6+12          130       4-900     75     240
> 46     750    0+11      2                       12      30 (June)
>
> The questions are many, but this can serve as a first step to know what
has been successful in the past so as to know what to engineer for future
duplication in the Amateur service.
>
> I have what I hope to be constructive input...but will share a bit later
in the day.
>
> Kind regards,
> Ev, W2EV
>
>
>
>
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>
>
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