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5 element ZL special for 2m band


A five element beam antenna. Two folded dipoles are spaced a quaterwave apart and fed a quarter wave out of phase using a twisted quarter wave feed line. This results in the waves adding in one direction
post 18 Jun 2024
5 element ZL special for 2m band

Antenna for UHF VHF Links

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Dual Band Half-Wave Flower Pot Antenna
The Flower Pot antenna can be readily modified to dual band

2 meter ssb yagi plans for sideband fun
Optimized using 144.250mhz as the center frequency which is in the middle of the SSB portion of the 2 meter band

2 Meter Slim Jim Antenna
This 2 Meter 300 Ohm Slim Jim antenna is constructed from regular 300 ohm twinlead

Vhf and Uhf Flowerpot Antenna
The antenna is constructed from rg58/u coax 22mm plastic plumbing

Diy a helical antenna for 432-435
diy a 14-turn home-made helical antenna for 432/435mhz


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