| |
CX2SA > SATDIG 18.10.12 21:03l 126 Lines 4228 Bytes #999 (0) @ WW
BID : AMSATBB7348
Read: GUEST
Subj: AMSAT-BB-digest V7 348
Path: IZ3LSV<IV3YXW<HB9TVW<DB0ANF<CX2SA
Sent: 121018/1902Z @:CX2SA.SAL.URY.SA #:3285 [Salto] FBB7.00e $:AMSATBB7348
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: OH2AUE P3E transponder demo video (i8cvs)
----------------------------------------------------------------------
Message: 1
Date: Thu, 18 Oct 2012 20:37:59 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>, "R Oler" <orbitjet@xxxxxxx.xxx>
Subject: [amsat-bb] Re: OH2AUE P3E transponder demo video
Message-ID: <000101cdad60$799fe4c0$0401a8c0@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Robert, WB5MZO
I don't believe that the linear transponder built and sold by PE1RAH for
a price of 1800 Euro is a flight space ready device because normally
it need to be tested at minimum into a vacum chamber at low and high
temperature and also vibration test and so on to be qualified for a flight
space launch.
73" de
i8CVS Domenico
----- Original Message -----
From: R Oler
To: domenico.i8cvs@xxx.xx
Sent: Thursday, October 18, 2012 8:10 PM
Subject: RE: [amsat-bb] Re: OH2AUE P3E transponder demo video
Is the cost you mentioned for a flight space ready device? Robert WB5MZO
> From: domenico.i8cvs@xxx.xx
> To: gordonjcp@xxxx.xxxx amsat-bb@xxxxx.xxx
> Date: Thu, 18 Oct 2012 17:28:20 +0200
> Subject: [amsat-bb] Re: OH2AUE P3E transponder demo video
>
> ----- Original Message -----
> From: "Gordon JC Pearce" <gordonjcp@xxxx.xxx>
> To: <amsat-bb@xxxxx.xxx>
> Sent: Thursday, October 18, 2012 8:47 AM
> Subject: [amsat-bb] Re: OH2AUE P3E transponder demo video
>
> > What I am referring to is linear transponders. They're heavy and
> > consume a lot of power. We need to either devise a new way of doing
> > that, that doesn't involve heavy inefficient linear amplifiers, or stick
> > to something like FM or GMSK where a little lightweight PA that doesn't
> > dissipate most of the input power as heat will do the job.
> >
> > It depends what you're trying to achieve. I'll respond to Domenico's
> > comments here, too.
> >
> > Gordon JC Pearce MM0YEQ
> >
> Hi Gordon, MM0YEQ
>
> Linear transponder can be built not heavy not to consume a lot
> of power and not too costly.
>
> Read please the following advise of William PE1RAH to my friend
> Roberto IW5BSF for a linear transponder designed for Ham radio
> frequencies to be integrated in CubeSat projects, balloon missions
> or terresterial repeaters.
>
> http://www.leijenaarelectronics.nl/leijenaar_electronics_009.htm
>
> Dear Roberto,
>
> The transponder I sell as a complete (pre-made) package in which the
> programmer and software all is included.
>
> It is made of very small SMD parts, 0402 size, that can only be soldered
> with profesional reflow oven (which I use).
>
> The whole package includes:
>
> Transponder on profesionally milled evaluation board (fully tested) ,
> power supply, programmer included all cables, example source code,
> and manuals.
>
> The transponder will be delivered with a testing report.
>
> I can deliver it for the price of 1800 Euro (excluded shipping cost).
>
> The transponder will be operational in a matter of minutes (the time to
> connect antenna cables and power supply).
> Manufacturing time is about 2 weeks, because of testing time to guarenty
> the quality.
>
> Datasheet and information you can find on my website:
>
> www.leijenaarelectronics.nl
>
> Thank you for your interrest and kind regards,
>
> William Leijenaar, PE1RAH
> Leijenaar Electronics
> Bergmanshofweg 2
> 5926 RH Venlo
> The Netherlands
> ---
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 7, Issue 348
****************************************
Read previous mail | Read next mail
| |
