[amsat-bb] Re: P3E transponder and launch
k8ocl at hotmail.com
Fri Mar 23 15:46:57 PST 2007
The reports I have seen is that the SDX sounded BETTER than the
traditional analog transponder. Bob, N4HY, can confirm that fact?
Also, if the fault is a hardware fault, we are dead in the water.
However, if the fault is a software fault, we can upload new
software to fix the problem, AND even work around a possible
Anything other than SDX would be a step-backward for AMSAT.
----Original Message Follows----
From: "John B. Stephensen" <kd6ozh at comcast.net>
To: <Patrick.McGrane at aceweb.com>, <amsat-bb at amsat.org>
Subject: [amsat-bb] Re: P3E transponder and launch
Date: Fri, 23 Mar 2007 22:29:47 -0000
Very similar SDR technology has been used in amateur HF transceivers for
years with no complaints. SDR can be used to compensate for losses in the
----- Original Message -----
From: "Patrick McGrane" <N2OEQ at aceweb.com>
To: <amsat-bb at amsat.org>
Sent: Friday, March 23, 2007 12:28 UTC
Subject: [amsat-bb] P3E transponder and launch
> Greetings from pat n2oeq
> I have been looking forward to the launch of P3E which I thought was
> to be this year.
> I am concerned about the germans use of the SDR technology over william
> Liejanier's transponder design.
> I am of the belief that signal processing presents a loss in the path,
> please correct me if I'm wrong.
> Williams Hamsat transponder is excellant and made me very interested in
> Besides making the voice unnatural, are other modes allowed through the
> SDR transponder?
> Does the Helaps system compensate for the loss?
> I'm of the Keep it simple discipline as once its up there nothing can be
> done to fix it.
> If amsat-dl is monitoring , please update your website and provide a
> direct Paypal donation utility.
> Thanks to amsat-na for the donation to P3E recently. 73, pat
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