5VDC/33VDC converter.

I will propose DC/DC converter. for increase 5 VDC to High Voltage 33V. In circuit use 74HC04 Hex inverter rise to 50 V then to 2 zener diode 33V to protect and output High voltage 33 VDC.
A Project can use to supply the circuit using 33 VDC. Example TV tuner or VCR.
Next I'm measuring a signal in circuit...!

ISS school contact

Hear the sound from International Space Station. Today ISS school contact's schedule to contact to school in Malaysia. I'm set up my shack to listen on 145.800MHz with Icom 2200-T and 2 x dipole antenna. And second mobile with Omni Antenna for spare. Use HRD satelite Tracking for monitor. and live steaming to my channel (see the recorded as below)
From ISS is very loud and clear but some station in my country make a noise. So It's very good to hear