Radial 9
Suzuki GS1000S (T) in a storage bag for the winter.
updated 6 years ago
The amplifier required track repairs to the PCB, Filter capacitor, high voltage rectifier, logic control board repair and valve replacement.
This video records the initial testing following repairs.
The input capacitor that manages attenuation, subsequently required adjustment to rectify a high SWR for the tranceiver. Once adjusted, the amplifier produced 700 watts out put but this had not been recorded.
The amplifier was manufactured in Germany by the Dressler-Hochfrequenztechnik - GMBH Company.
I decided to try the Antennas and Amplifiers PA144-11-6BG antenna.
This review covers what is supplied, single operator assembly, analyser test and thoughts on construction. Note that the antenna is not supplied with any assembly instructions, but it is quite straight forward to assemble.
The antenna will need to be in the field to assess performance during UK contest activity, I should get this done in the next video on this antenna. 144Mhz UK activity is low outside of contest times, hence a reliable test will need to be preferably aligned to a vhf contest.
144 Mhz Contest antenna from Serbia.
First look and build (not operationally tested )
11 element yagi, PA144-11-6BG
Antenna free space forward gain 14.8 dBi
Length 5.72 m (18.75 feet)
Manufacturer web site: Antennas-Amplifiers.com
I bought this bike when working in Dubai in 1980, hope you find the story interesting. This is part 1, part 2 continues here youtu.be/PXO5vTxuxWg
Material 12L14
Lathe AMA 280VF (similar to a Grizzly distributed, Chinese manufacture model
Tools - 0.031" home ground parting tool from 1/4" square HSS.
Indexed tool holder and boring bar. Various drills up to 18mm.
Hope to provide practical visuals those who have similar interests..


