I would like to operate AO-92 using the L-band uplink. I own some 23 cm equipment, which is unused right now, and can be put into service. Here is my concept of mode L/v:
|Equipment for working AO-92 in mode L/v.|
The 20 W PA is based on the power module RA18H1213G from Mitsubishi. I bought the PA as a kit from PE1RKI Bert. You can find the circuit diagram and a description of the building process here.
The low-pass filter removes harmonic waves, and monitors the RF power.
The antenna is a helix-antenna for circular polarization (RHCP). As the AO-92 antenna is linear, there will be 3 dB loss when circular polarized waves are received by the satellite.
The 23 cm equipment is housed in an alu-box which is mounted near the antenna.