- GaAs-FET experimental LNA's for troposcatter communication on the 50 MHz band
- more detail on one of the 50 MHz LNA's here
- high third order intercept ( + 32 dBm ) mixer using quadrature FET ring mixer for 50 MHz
- the SSPA is a modified commercial meteor scatter PA now giving 200 W PEP on SSB on 50 MHz
- an active preselector + antenna tuning unit for my Drake R7A
- a remotely tunable magnetic low noise loop antenna for HF - perfect for the city dweller !
- working on ideas for experimental 137 kHz equipment