Showing posts from November, 2007


CQ100 is a program for use exclusively by licenced radio amateurs and is a simple and effective way to keep in touch with hams all over the globe 24 hours a day without any propagation. If you are interested you can download a 3 month free trial if you follow this link I have already heard many CQ calls through the CQ100 virtual radio and I will be listening out for you all, and monitoring all the other bands at the same time on my real rigs! 73 C u agn Simon

Homebrew 40/80 Trap Dipole Design

This Antenna design was one that I used about 4 years ago, it worked exceptionally well on 80m and 40m. The size of the antenna makes a Half wave length on 80 meters, and with the traps a half wave on 40m with a SWR (standing wave ratio) of 1:1-1.5 across both bands. It worked well also on 20m with the use of an A.T.U (antenna tuning unit). I made my version of this antenna using 3mm multi strand copper cable which I left covered by the PVC insulation. The traps can either be home brewed using some 40mm diameter plastic drain pipe and winding wire around the pipe approximately 10 turns, then connected in line after the 10 metre lengths. Or the alternative is to purchase some commercially made 7.1 MHz traps, and fit them in line the same way. The antenna can be fed with 50 ohm coax with a home brew balan or again a commercially purchased balan. The wire lengths of the dipole are 2x 10 metres and 2x 6.7 metres as shown on the diagram above. This antenna can be mounted quite low to the gr

Heil Goldline Studio Mic

Greetings to all, I recently acquired the Heil mic and had planned to use it in the mobile with the ft-100, but after trying it out I decided to stick with the original fist mic from Yaesu. The Goldline from Heil had struggled to pick up my voice from the dashboard mounting bracket, and with the whole idea of making mobile operations more inconspicuous by not drawing attention to myself, fitting a hands free mic seemed to be out of the window. I was having to shout that loud to hit the alc level, most peoples heads were turning and wondering what I was shouting at. So back to basics and the fist mic wins! I then decided to try the Heil microphone in the shack on the ft-767. This was the beginning of a potentially beautiful relationship as the rig and mic compatibility seemed good with some good reports from experienced G-Stations on 80 meters. I have been using the microphone for the last couple of days and I am finding it OK with the wired PTT switch in my hand and ready to engage. T


I have recently had the pleasure of assisting a fellow member of Staff at work by helping him train to become a radio amateur. Chris is an electrical lecturer at the college where we both work, I was extremely happy when Chris asked me to help him get into the hobby and with his electrical/electronic knowledge it will be fairly simple to pass the foundation examination and obtain the licence which will allow him to operate his recently purchased yaesu ft-847. Good luck with the exam Chris and welcome to the world of Ham radio. Chris asked me about Q-codes so I decided to post the list of Q-codes which are used by radio amateurs around the world. The Q-codes were originally invented for use with telegraphy and then Morse code allowing messages to be transmitted quickly without having to rattle out long and difficult sentences. These days they are still used as a way of sending voice messages as well as Morse, whilst communicating with another station. The Q-codes can be very useful espe