Hits
Hf mobile 27 - 28mhz
The ring antenna, where to place it? Above all, there is no choice: only the windshield and the windshield have a perimeter of about 3 m
post 03 Mar 2024
Antenna 10m 28 Mhz Links →
5 elements "vee"log-yagi for 10m
5 elements "vee" log-yagi for 10m band- boom lenght 4mt, Gain over 10 dBd
2 element-HB9CV-Beam
The HB9CV-Beam is a 2-Element-Yagi with two driven elements and was introduced by Rudolf Baumgartner
A 5 element Yagi for 28MHz
This is a high-gain, wideband OWA Optimised Wideband Array Yagi which covers the whole of the 10m band with an SWR of less than1.1:1 from 28-29MHz
Antena Direcional de 5 Elementos para 28.5 Mhz
Gamma match will be made with a 1/2 "aluminum tube and a 75 cm coaxial piece of RG8 without sock and sheath inside the tube
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5 elements "vee" log-yagi for 10m band- boom lenght 4mt, Gain over 10 dBd
The HB9CV-Beam is a 2-Element-Yagi with two driven elements and was introduced by Rudolf Baumgartner
This is a high-gain, wideband OWA Optimised Wideband Array Yagi which covers the whole of the 10m band with an SWR of less than1.1:1 from 28-29MHz
Gamma match will be made with a 1/2 "aluminum tube and a 75 cm coaxial piece of RG8 without sock and sheath inside the tube
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
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