Last updated 2005-1-23
The APT receiver I constructed had been designed by Gerald Düllberg
DL8DAQ and had been published in UKW-Berichte, Vol 1., 1997, pp 17-30.
For autoscanning a microprocessor controlled PLL had been used which also included an AFC for doppler tracking of satellite transmissions. Kits had been available at those times.
Complete setup of my APT equipment