Tuning the dipole using the 1:1 Balun

I had some time yesterday afternoon to tune up the wire i am using with the 1:1 Balun dipole project. I set myself up outside and ran out the dipole as I would deploy it for a SOTA activation. The antenna was too long as expected given how I had cut the wire!   I started…

1:1 Current Balun

To Balun or Not to Balun, this is the question? Like Ford vs Holden, Canon vs Nikon or Yaesu vs Icom; the world is divided into two camps on how best to connect a resonate wire antenna to a bit of coax. Until now, my dipole had been direct connected. and this had worked as…

Fixing a Radio Noisy Prado 150 Diesel

The trouble with operating from a car is, modern cars with electronic systems can be RF noisy! The diesel D4D engine in my Prado 150 series is no exception. With many sources of noise on the HF bands. From throttle noise to electronic injector noise, and base car background noise. Operating on some parts of…

EMDRC Club SOTA BBQ – VK3/VC-002 Mt Donna Buang

I decided we needed to get some more people interested in sota, a number of members of the Ham club I’m involved in (EMDRC) had mentioned they were interested in SOTA, and a number had even acquired some portable gear with the intent of operating portable and even activating some sota summits. With the weather getting nicer,…

Codan 9350’s are not indestructible

When Chrisitne got her new truck (4wd) I was keen to install some HF radio gear into it, i realised a codan 9350 auto tune antenna would be a nice addition, I had previously used a terlin tapped whip, and while this was a good performer, it was a pain to change bands when mobile!…

Sota Activation – VK3/VE-237 Huon Hill

The other day i had some work in Albury/Wodonga. This is a very long day, with near on 8hrs of driving, though I did manage to sneak in 45mins for lunch and a Sota activation on Huon Hill, on the edge of Wodonga. VK3/VE-237. Huon Hill has a road to the top, you enter through…

HeyWhatsThat! Coverage Prediction Software

Coverage prediction software is nifty and handy, the internet and powerful computers have made the availability of predicting coverage footprints for transmitters and the visible horizon from any location on the globe really easy. A number of simple software packages that let you predict these items are Hey Whats That http://www.heywhatsthat.com/ and Radio Mobile Online http://www.cplus.org/rmw/rmonline.html. I’ve written…

Sota Activation – VK3/VC-022 Mt Cowley 2014

Work took me back to western Victoria yesterday, with an early morning meeting in Warrnambool which meant a very early morning trip form Melbourne. Having finished all my tasks by mid-day, I took the opportunity to undertake some RF survey works taking the coast road back to Melbourne, looking at some site options for some…