Tag: hf

CQ WW SSB 2015

This weekend saw a casual entry into the CQ WW SSB contest, taking part with George M1GEO, Dave M0YOL, Dave G7UVW and Chris G8OCV. I used my TS990, 4e homebrew beam on 21 MHz and HAL 1200 solid state amplifier delivering 400w. 28 MHz was a vertical @ 12m and 1.9, 3.5 and 7 MHz […]

21 MHz 4e Beam Part #3

You can read Part 1 and Part 2 of the project Part 3 Members of the Havering ARC took part in the LEFARS radio event over the bank holiday weekend 23/24/25 May provided the ideal opportunity to test the beam. George M1GEO and Chris G8OCV provided the 12m SCAM mast and so the fun began. The […]

Homebrew 21 MHz Beam Part #2

Read Part 1 of the homebrew project Now the exciting phase, nearing the end and a moment to complete the final stages. Construction of the matching phase, and mounting the driven element.  The antenna feed point is 28Ω, and the method of feeding the antenna is described on DK7ZM site. Once constructed from 2 lengths […]

Homebrew Project 21MHz 4E Yagi Antenna

Months ago I ordered some aluminium in preparation for another antenna project.  Wtih the assistance of John M0UKD the plan was to build a 21 MHz 4E Yagi. The aluminium was ordered from aluminium warehouse, and cost around £100 including delivery.     The on-line shop provides and delivers lengths of up to 5 meters, […]