According to Wouter, PA3WEG, who designed the AO-73 transponder, PLL frequency generation is possible now within the power budget of a 1U CubeSat, but was not when the FUNcube's transponder was designed.
See his post from last month: http://amsat.org/pipermail/amsat-bb/2013-December/047815.html 73, Paul, N8HM On Sat, Jan 11, 2014 at 9:22 AM, Rich/wa4bue <[email protected]> wrote: > AO7 and FO29 seem to be very stable. VO52 was my first experience with a > drifty transponder oscillators. I read some explanations on the BB. > > What design element needs to be changed to stabilize the linear transponders > oscillators on the new CUBESATS. > > Are the beacons crystal controlled? > > Rich > W4BUE > _______________________________________________ > 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
