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.i8...@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.i8...@tin.it > > To: gordon...@gjcp.net; amsat-bb@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" <gordon...@gjcp.net> > > To: <amsat-bb@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 > > --- _______________________________________________ Sent via AMSAT-BB@amsat.org. 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
