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The 2-Element-HB9CV-Beam


The HB9CV-Beam is a 2-Element-Yagi with two driven elements and was introduced by Rudolf Baumgartner
post 04 Apr 2024
The 2-Element-HB9CV-Beam

Antenna 10m 28 Mhz Links

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Magnetique 27-28 MHz
The critical part on this type of antenna is always the variable tuning capacitor which is located at the hot spot of the antenna

Portable 28 MHz 10 Meter 2 Element Beam
Element is 8 ft and 4 inches long each there's 2 for a total of 16 feet 8 inches, the reflector is 17 ft and 7.3 inches long with the spacing at 6 ft and 7 inches from the driven element

Simple Antennas for 10 Meters
The Lazy H is bidirectional but offers a pleasant 6 dB gain. This could be a good project

The Homebase 10 halo antenna
The Homebase10 is a simple to make wire halo antenna for 10m 28MHz built using parts available from the local DIY store

Une antenne 10 metres pour station portable
Ideal for the 28 MHz QRP 10 watts maximum, perfect for portable traffic thanks to its ease of installation


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