Hits
CTHA Antenna
To build one using the materials available in the shack just to investigate its behaviour so to be able to scale it to some radio amateur band
post 24 Sep 2024
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144 & 432 MHz High IIP3 PA3BIY LNAs
When I first saw the article in , I was very impressed with the data and quality of the construction
222 Mhz Transverter for the FT-817
The transverter can be configured to work with the Flex-1500 SDR and other transceivers with transverter ports
50Mhz high gain antenna and masthead preamplifier
An efficient antenna system is a prerequisite for more successful six metre operationv
A Motor Drive for your Variometer
Everyone who has set up a low frequency base loaded antenna is aware of the very narrow bandwidth of the antenna system, and the seemingly constant need to retune the antenna
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When I first saw the article in , I was very impressed with the data and quality of the construction
The transverter can be configured to work with the Flex-1500 SDR and other transceivers with transverter ports
An efficient antenna system is a prerequisite for more successful six metre operationv
Everyone who has set up a low frequency base loaded antenna is aware of the very narrow bandwidth of the antenna system, and the seemingly constant need to retune the antenna
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 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
Interface-for-digital-broadcasts-with-integrated-audio 4-port HUB, with a TUSB2046. With port 1 of the HUB we drive the FT232RL; with port 2 the PCM2904, furthermore, we decided to leave ports 3 and 4 free