[amsat-bb] Re: OH2AUE P3E transponder demo video

i8cvs domenico.i8cvs at tin.it
Thu Oct 18 11:37:59 PDT 2012

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 at tin.it 
  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 at tin.it
  > To: gordonjcp at gjcp.net; amsat-bb at amsat.org
  > 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 at gjcp.net>
  > To: <amsat-bb at amsat.org>
  > 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
  > ---
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