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Re: AO-40 EIRP?



Thank you Yoshi.

Based on what I've found so far, I think the EIRP listed on the web site is
for the dish.  I suspect the gain on the helix is something like 3-4 dbi.

I wonder if the beacon is really outputting 50W.  I am thinking that the 50W
might be the total power output for a transponder fully loaded with users in
which case the beacon would be much lower.  Of course since the transponders
are currently off maybe all 50W are concentrated in the beacon.  I tried
looking at some of the telemetry in the archive to see if I could determine
the actual measured output power.  The "Power S-band Tx 2" value seems to be
106-110.  The tlm spec. says "use raw" so I don't know how it relates to
wattage output.

Thanks again for the pointer Yoshi.

Lee-KU4OS

----- Original Message -----
From: "Yoshihiro Imaishi" <imaishi@aa.mbn.or.jp>
To: "Lee" <lee-fl@cfl.rr.com>; "AMSAT-bb" <amsat-bb@amsat.org>
Sent: Tuesday, April 03, 2001 21:58 PM
Subject: Re: AO-40 EIRP? & Millicom results


> Hi This is Yoshi.
>
> At 2001/04/04 06:27:12 Lee wrote:
> > I'm still hunting for an EIRP value for the current AO-40 configuration.
>
>   Here is a chart of AO-40's output EIRP. I am not sure that is
> by S1 dish or S2 helix (maybe dish).
>
> http://www.jamsat.or.jp/p3d/eirp.html
>
>
> Yoshihiro Imaishi JF6BCC/KH2GR
> GL:PM53JV, ex KC6IY(T88IY),V63BP
> mailto:jf6bcc@jarl.com or jf6bcc@jamsat.or.jp
> <http://plaza16.mbn.or.jp/~palau/> Sorry, Japanese only now.

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