[amsat-bb] Re: The Mode B tradition

[John B. Stephensen]

You're right. P3E and Eagle will operate similarly to AO-10 and AO-13 on 
mode B and P3E is similar to AO-13 on mode S. I don't remember making a 
single S-band contact outside the U.S. on AO-13. The advantage of mode B is 
that it works with large off-pointing angles and that is what is required 
for DX. I was able to work India (Bangalore) using AO-10 on mode B and that 
was almost on the opposite side of the earth from LA.

73,

John
KD6OZH

----- Original Message ----- 
From: "george abbott" <ka1ajf at cox.net>
To: "'Bill Ress'" <bill at hsmicrowave.com>; <G0MRF at aol.com>; 
<brobertson at mta.ca>; <amsat-bb at amsat.org>
Sent: Thursday, September 14, 2006 22:34 UTC
Subject: [amsat-bb] Re: The Mode B tradition


> Hi All: I always preferred mode b .I spoke with people all over the
> world through Ao-13. I also had 3 way contacts with stations in Japan
> and Germany. I live in RI.When is the Eagle set to fly?
>
> -----Original Message-----
> From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
> Behalf Of Bill Ress
> Sent: Thursday, September 14, 2006 5:39 PM
> To: G0MRF at aol.com; brobertson at mta.ca; amsat-bb at amsat.org
> Subject: [amsat-bb] Re: The Mode B tradition
>
> Hi David,
>
> Help me out with the 100,000 single point failures. Are you referring to
> the
> complexity of digital gates etc., in the DSP.
>
> Isn't P3E going with a digital IF or are they using an analog backup or
> vice
> versa? That's the SDX thingy isn't it?
>
> Regards...Bill - N6GHz
>
> Hello Bruce / Dom.
>
> I agree, the UV on Eagle will be apparently analog (ue) to the casual
> user.
>
> But be aware Bruce that it's not "primarily" a software driven
> transponder.
>
> It is in fact TOTALLY software driven.  There is no linear IF, just  DSP
> in
> the core.  Or from another viewpoint  100,000 single point  failures
> just
> waiting to happen.
>
> 73
>
> David  G0MRF
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