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: [email protected] 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: [email protected] > To: [email protected]; [email protected] > Date: Thu, 18 Oct 2012 17:28:20 +0200 > Subject: [amsat-bb] Re: OH2AUE P3E transponder demo video > > ----- Original Message ----- > From: "Gordon JC Pearce" <[email protected]> > To: <[email protected]> > 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 [email protected]. 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 [email protected]. 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
