[amsat-bb] ISS

[Pavel Milanes Costa]

Thanks Frank for the answer,

But no... the signal power down was in the middle of the second 
picture... the SSTV audio was still barely audible in the noise floor of 
one of my receivers... and disappeared just as expected at the end of 
the 3 minutes of tx just a few seconds after LOS

I searched for that pattern (3 on/3 off) on my full pass audio recording...

Never mind, just curious here...

73 from CO7WT...

El 01/02/15 a las 07:45, Frank Bauer escribió:
> Pavel,
>
>
>
> The ISS Kenwood D710 is being duty cycled 3 minutes on and then 3 minutes
> off to minimize overheating.  That is why you heard no signal in that
> period.
>
>
>
> Thank you for your interest in the ARISS program and AMSAT (via -bb).
>
>
>
> 73,  Frank Bauer, KA3HDO
>
>
>
> ********
>
> Date: Sat, 31 Jan 2015 20:50:51 -0500
>
> From: Pavel Milanes Costa <co7wt at frcuba.co.cu>
>
> To: Amsat - BBs <amsat-bb at amsat.org>
>
> Subject: Re: [amsat-bb] ISS
>
> Message-ID: <54CD867B.7050102 at frcuba.co.cu>
>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
>
>
> Just received 2 pictures #6 and #?  01/feb/2015 ~0031z here in Camag?ey
> Cuba, FL11aj
>
>
>
> The start of the picture was just a few seconds of AOS, #6 with medium
> quality (jpole and HT whip antennas), unusual strong signal, in the middle
> of the second photo the signal dropped to the noise...
>
>
>
> Three receivers here (RTL-SDR + base  kenwood and baofeng UV-5R) and power
> down was noticed on the tree and stanle...
>
>
>
> Just curious... does anyone have a explanation on that?... there was about 3
> min to the LOS from a 9 min+ pass and the signal just dropped and stayed
> that way until LOS, not fadding...
>
>
>
> Maybe a solar panel get on the path of the signal?
>
>
>
> 73
>
>
>
>
>
> El 31/01/15 a las 18:11, graham mcphee escribi?:
>
>> Pictures still coming down at 2300UTC
>
>> Graham VK2AYE
>
>
>
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