Some prototypes and engineering versions of hardware from the very early stages of the AMSAT-OH X-band transmitter for the Phase 3D satellite:

- more info on the P3D satellite X-band transmitter IHU simulator

- photo of 1.48 GHz PLL LO ( 73k ) prototype for above converter

- photo of engineering model PLL LO ( 87k ) with sextupler ( PCB by OH7JP )

- image of very early ( 83k ) prototype of 10.7 MHz to 54 MHz upconverter with AGC

- photo of second concept ( 119k ) prototype 10.7/230 MHz U/C with AGC ( XTAL LO underneath )

- photo of first engineering model ( 73k ) of 10.7 to 230 MHz converter with AGC ( PCB layout by OH7JP )

- photo of second engineering model ( 74k ) of 10.7/230 MHz upconverter, design identical to flight model ( PCB by OH7JP )