[amsat-bb] EO-80 FM Transponder Tested

[Andrew Koenig]

Thanks! That website explained it very well, and seeing the formulas really
helped.

73 de KE5GDB

On Wed, Jun 17, 2015 at 9:51 AM, Paul Stoetzer <n8hm at arrl.net> wrote:

> Free space path loss is dependent on frequency. All things being equal
> (distance, antenna gain on both ends, etc), a 2 meter signal has about
> a 9 dB advantage over a 70cm signal.
>
> Here's an explanation:
>
>
> http://www.radio-electronics.com/info/propagation/path-loss/free-space-formula-equation.php
>
> 73,
>
> Paul, N8HM
>
> On Wed, Jun 17, 2015 at 10:42 AM, Andrew Koenig <ke5gdb at gmail.com> wrote:
> > Can you explain the 6dB advantage 2m has over 70cm? I've seen it here on
> the
> > amsat-bb, and in the mesh realm when comparing 2.4GHz and 5.8GHz WiFi
> gear,
> > but it still hasn't "clicked."
> >
> > 73 de KE5GDB
> >
> > On Tue, Jun 16, 2015 at 6:56 PM, Paul Stoetzer <n8hm at arrl.net> wrote:
> >>
> >> Nick,
> >>
> >> It should be even stronger than AO-27's 500 mW, AO-27 had a 70cm
> >> downlink, the EO-80 downlink is on 2 meters, so EO-80's signal should
> >> be up to 9 dB stronger than AO-27 (12 dB stronger if they run it at 1
> >> watt).
> >>
> >> 73,
> >>
> >> Paul, N8HM
> >>
> >> On Tue, Jun 16, 2015 at 7:49 PM, Nicholas Mahr <nicholasmahr1 at gmail.com
> >
> >> wrote:
> >> > Thats very good news, Hopefully the two get activated before field
> day?
> >> > Im
> >> > most looking forward to EO-80, It should be like AO-27 with 500Mw or
> 1W.
> >> > Good to know both are working well and wish a long life to them.
> >> >
> >> > 73 KE8AKW
> >> > _______________________________________________
> >> > Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> >> > to all interested persons worldwide without requiring membership.
> >> > Opinions expressed
> >> > are solely those of the author, and do not reflect the official views
> of
> >> > AMSAT-NA.
> >> > Not an AMSAT-NA member? Join now to support the amateur satellite
> >> > program!
> >> > Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
> >> _______________________________________________
> >> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> >> to all interested persons worldwide without requiring membership.
> Opinions
> >> expressed
> >> are solely those of the author, and do not reflect the official views of
> >> AMSAT-NA.
> >> Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> >> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
> >
> >
> >
> >
> > --
> > Andrew Koenig
>



-- 
Andrew Koenig