[amsat-bb] Es'hail-2 transverter ready

[Remco]

I built my second Es'hail-2 transverter with easy available
building blocks and junk box / flea market components.

I consider the future (narrow band) transponder as a 'normal' amateur band
(with latency) and therefore will operate 'simplex'.

This means the LO frequencies are switched by the PTT (TX-enable).

Picture:  https://pbs.twimg.com/media/DgZGilPWsAAWSQh.jpg:large

Some technical details:
RX / TX LO: ADF4351, programmed by an ATTiny13a
TX mixer: HMC213
RX mixer: home brew with ADE-1 + J310
HPA: surplus ex-UMTS module (P-1 dB @2400 MHz = 10W)
IF RX / TX: 432 MHz (or something else)
Dish feed: 6t 2.4 GHz LHCP helix and 10 GHz LNB 'peek a booing' through the 
helix

73, Remco PA3FYM