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Bolometer 10GHz


Bolometer 10GHz

When building an ATV Transmitter at 23cm, the need for a power meter for small powers arose

post 15 Sep 2024


Projects_Homebrew Links

170



Moonbounce the Elevation bearing
Like a lot of other homebuilder do, I decided to also use a standard actuator to perform the elevation of the array

Preamplificatore 435 Mhz GaAsFET
GaAsFET adatto alla preamplificazione dei deboli segnali satellitari

Preamplificatore di antenna 144-146 Mhz per satelliti VO-52 e OA-27
Il preamplificatore ha un guadagno elevato con una cifra di rumore molto bassa

PSK31 per tutte le radio
Si riduce alla sola commutazione sfruttando la tensione che viene a crearsi sulla seriale del pc quando il programma in uso va in trasmissione

My homemade electronics stuff


23cm Yagi Antenna building

23cm Yagi Antenna building Finished antenna at 1275 MHz SWR under 1:1.5 at resonant frequency

50 MHz preamp Gain 26dB with the BFG135

50 MHz preamp Gain 26dB with the BFG135 Preamps for 144 and 430 MHz, for 50 MHz, the BFG135a is a cheap transistor and in my view rather strong. It is not easily damaged by static discharge or RF power. FG connection

30 Volt Computer Power Supply Stack

30 Volt Computer Power Supply Stack A bonus was that i discovered that these did not need a standby load connected to the supply to keep them running just apply mains power and close the Start lead to ground