[amsat-bb] EO-80 FM Transponder doubt

Pavel Milanes Costa co7wt at frcuba.co.cu
Sun Jun 21 15:19:38 UTC 2015


I have a doubt...

A few days ago Paul put a list of the proposed channel for EO-80..

I have noted that the TX freqs are from lower to higher (AOS to LOS), is 
that correct?

 From the sat point of view a Tx on the center freq will appears as 
shifted up at the AOS because the two point are getting closer (doppler 
is summing), in fact no matter is the freq is for TX or RX if at AOS the 
shift must be + not -

I'm right?

PS: with the 2.5 Khz of the new Chinese radios the 2m downlink can be 
shifted to +2.5 Khz at AOS and -2.5 Khz at LOS to improve reception quality

El 17/06/15 a las 12:59, Paul Stoetzer escibió:
> Anyone who wants to program memories for EO-80 should follow this plan:
>
> EO-80 AOS - TX 435.070 MHz 210.7 Hz CTCSS, RX 145.840 MHz
> EO-80 2      -  TX 435.075 MHz 210.7 Hz CTCSS, RX 145.840 MHz
> EO-80 TCA  -  TX 435.080 MHz 210.7 Hz CTCSS, RX 145.840 MHz
> EO-80 4      -  TX 435.085 MHz 210.7 Hz CTCSS, RX 145.840 MHz
> EO-80 LOS -  TX 435.090 MHz 210.7 Hz CTCSS, RX 145.840 MHz


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