RE: [amsat-bb] ERP on V and L for AO-40??

[Tony Langdon <tlangdon@xxxxxxxxxxxxxxxxxx>]

That low?  U/S portable, here we come! :)

25W EIRP on 70 is pretty straightforward, just have to make sure the S band
downlink is up to scratch.  Need some form of portable mount for a 26"
offset fed dish.

Tony Langdon. 
Systems Development and Support. 
ATC Training Australasia.  Level 2 321 Exhibition St Melbourne  3000. 
Phone:  1300 13 1983     WWW:  http://www.atctraining.com.au 



> -----Original Message-----
> From: John Stephensen, KD6OZH [mailto:kd6ozh@gte.net]
> Sent: Tuesday, 12 June 2001 13:16
> To: Doug Faunt N6TQS +1-510-655-8604; amsat-bb@AMSAT.Org
> Subject: Re: [amsat-bb] ERP on V and L for AO-40??
> 
> 
> AMSAT-DL recently published 25W EIRP for 70 cm and 100W EIRP 
> for 13 cm for
> SSB (without LEILA). Information from AMSAT-NA a few years 
> ago indicated
> that digital uplinks will require 6 times more power. I 
> decided to shoot for
> 200W EIRP on 70 cm and crank the power down for voice operation.
> 
> 73,
> 
> John
> KD6OZH
> 
> ----- Original Message -----
> From: "Doug Faunt N6TQS +1-510-655-8604" <faunt@panix.com>
> To: <amsat-bb@AMSAT.Org>
> Sent: Monday, 11 June 2001 19:10 UTC
> Subject: [amsat-bb] ERP on V and L for AO-40??
> 
> 
> > My apologies if this has been answered definitively, but there's so
> > much information available I'm not able to sort it out, and 
> I've been
> > concentrating on the S-Band downlink question.
> >
> > What ERP should be adequate for good signals on U and L uplinks for
> > communication "all the time", "most of the time", and "some of the
> > time"?
> >
> > Obviously it depends on the quality of the setup at the RX 
> end to some
> > degree, but obviously with LEILA in action there's an upper 
> limit, and
> > I suspect there's a bell curve.
> >
> > I can easily work out antenna, transmission line and output 
> power if I
> > know ERP numbers.
> >
> > 73, doug
> > ----
> > Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> > To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
> >
> 
> ----
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