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Open Wire Feeder Construction


Open Wire Feeder Construction

For the suppliers of 450 ohm open feeder. It is far easier to build this than find suppliers of this cable, and its a great deal less expensive

post 26 Oct 2024

post 26 Oct 2024


Wire & Random Antenna Links

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Sperkring Trap voor een W3DZZ Antenne
The idea of parallel circuits or traps in a dipole antenna to obtain more than one resonance was first conceived by G8KW

Supporto per dipolo filare
La realizzazione e' molto semplice,vanno realizzati due elementi in vetronite o bachelite ramata monofaccia

The double size G5RV antenna an article
I started by cutting 2 lengths of wire each 31.05 Metres 102 feet long. You may wish to add 10cm or so to allow for tuning

The Half-Square vs the Loop Skywire
I had been using a full wave 80M loop at about 35 feet for 40 and 80 with good results. I’d work my share of EU, AF, and SA stations on 40M but I did not try it on the higher bands until the tower went down


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

interface-for-digital-broadcasts-with-integrated-audio

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