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Re: P3e Mode-UV flight model ready at AMSAT-DL



Once again congrats William, we are all waiting for P3E, some of us down 
under are desperate to contact the world on the sats !!!
keep up the good work
73 de Keith  VK6XH

William Leijenaar wrote:

> Hi AMSATs,
>
> I always like to inform the AMSATs public about my P3e work, but 
> unfortunatly due to
> some reasons there was not much time and nothing much to say...
>
> However, now I am happy to announce that the my MODE-UV transponder 
> design for P3e is ready at the P3e integration place in Marburg 
> (Germany). About 4 weeks ago I was in Marburg before, where the 
> transponder has been checked. Unfortunatly some unsure things were 
> found in the design. The unsure things were about long term stability 
> after many years in space.
>
> At home in The Netherlands, I changed the design with some minor 
> changes to have a secure long term stability. Finally I tested the 
> transponder again and it performed well within the specifications. 
> Again something learned for future transponder designs :o)
>
> Last Wednesday I drove to AMSAT-DL P3e integrations place in Marburg 
> again, and have my transponder again checked. In the beginning it 
> seemed that the 70cm receiver lost 10dB in sensetivity. After some 
> more measurements we find out that it was due to a bad attenuator we 
> used for protection at the input.
>
> Together with Karl Meinzer we looked for any problems, but so far we 
> could see (without HELAPS) all was okay. In the afternoon I went back 
> home again, this time without the MODE-UV.
>
> Now the MODE-UV will get a new home, the home of P3e... :o)
> I hope the transponder will work like its elder sister in AO-10, and 
> you all will enjoy it for many years...
>
> It was lots of work to get it this far, but I know it is for a good 
> purpose...
>
> 73
> William Leijenaar (PE1RAH)
>
> * Developer of the Dutch transponder on the Indian HAMSAT
> * Developer of the AMSAT-DL P3e Mode-UV transponder......
> ----
> ----
> Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
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>
>

-- 
Keith Bainbridge
VK6XH
N.C.R.G  ( VK6ANC )
Amsat NA #35338
W.I.A.
ex G6HHV, G0HEI, G1GHZ and VK6BRK

You're just jealous because the voices only talk to me!
----
Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
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