[PPRAANet] Fw: [amsat-bb] AO-50 now open to all

[Thomas McDaniel]

Hi All,

Here is some new information about SO-50 from AMSAT's President.

73  Tom  n0ntx

----- Original Message ----- 
From: <VEFRH at aol.com>
To: <amsat-bb at AMSAT.Org>; <Advisors at AMSAT.Org>; <bod at AMSAT.Org>
Sent: Thursday, June 10, 2004 8:27 AM
Subject: [amsat-bb] AO-50 now open to all


> Greetings,
> I have been advised that I can now publish the tone to Open AO-50 to all
> users as the power availability appears to be good.
> To switch the transmitter on you need to send a CTCSS tone of  74.4  Hz.
> the order of operation is thus:
>
>  (allow for Doppler as necessary)
>
> 1) Transmit on 145.850 MHz with a tone of 74.4 Hz to arm the 10 minute
timer
> on board the spacecraft.
>
> 2) Now transmit on 145.850 MHz  (FM Voice) using 67.0 Hz to PT the
repeater
> on and off within the 10 Minute window.
>
> 3) Sending the 74.4 tone again within the 10 minute window will reset the
10
> minute timer.
>
> Some additional information ...
>
> The spacecraft repeater consists of a miniature VHF repeater with a
> sensitivity of -124 dbm, having an IF bandwidth of 15 KHz. The receive
antenna  is a
> 1/4 wave vertical mounted in the top corner of the spacecraft. The receive
> audio is filtered and conditioned then gated in the control electronics
prior to
> feeding it to the 250 mW Transmitter.
> The downlink antenna is a 1/4 wave mounted in the bottom corner of the
> spacecraft and canted at 45 degrees inward.
>
> 73
> Robin Haighton VE3FRH
> President AMSAT-NA
> ----
> Sent via amsat-bb at amsat.org. Opinions expressed are those of the author.
> Not an AMSAT member? Join now to support the amateur satellite program!
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo at amsat.org