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An Inverted L Antenna for Small Gardens


An Inverted L Antenna for Small Gardens

The antenna works very well particularly on 40m ZL, VK, 3B9 and Antarctica worked, on 20m you will need ATU as like the W3DZZ the impedance is high on this band

post 16 Jul 2024


Antenna Shortwave Links

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Active 3-30 MHz Hula-Loop Antenna for Shortwave
Home-made antennas can greatly improve the performance of AM and FM radios, short-wave receivers, and scanners

Active Ferrite Rod Antenna
Matti OH7SV did some tests to find out if Active Ferrite Rod antenna can be build for 80 / 40 Meter ham band reception. Matti's experiments are documented here

Active Antenna AA-7 HF/VHF/UHF, 3-3000MHz, Antenna booster
is a small antenna going through an RF preamplifier to a receiver

Shortwave Portable Receivers
shortwave portable radio, portable shortwave receiver, world band radio, worldband

An easy vlf loop 200Hz-20kHz reception without transformers
the loop antenna is easy to build but the preamplifier has a lot of active components many gain stages, much noise


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