2015-03-24 New antenna for outdoor plans 2 years ago
The main thing I shopped for when I visited the Landelijke Radio Vlooienmarkt was a simple antenna for 10/20/40 to use while camping. To get the most out of not too much space I decided to mainly look for an endfed antenna. This is a simple wire with a transformer at the end. Not the perfect antenna, but a compromise between size, performance and ease of deployment. Browsing the offerings I found an LW-10 antenna which covers 40 to 6 meter (7 to 50 MHz) and was sold to me by the nice people of www.cbradio.co.uk. I wanted to test it at home and last evening I had the chance. I mounted the high end to the attic window and had the low end hanging in the garden with some nylon rope at the end to keep it away from the house. The antenna needs an antenna tuner, this is clearly mentioned in the documentation and on the package. The good thing is I have a tuner to work with. With the tuner the SWR meter on the radio stayed in its corner. It tuned for me fine on 10, 20 and 40 (bands I can access as a Dutch novice amateur). Propagation wasn't really cooperating: 10 was closed, 20 was difficult and 40 was open. I made some PSK31 CQ calls on 10, 20 and 40 and saw the calls being heard on 20 meter via pskreporter. I also tried to answer a Danish station calling CQ on 40 meter but the station could not hear me. Given that the antenna was hanging in such a way that most the most signal would propagate in a south-easterly direction this wasn't a complete surprise. I learned that there are a lot more working configurations for hanging an endfed wire antenna than just the one I used. This asks for experiments!