I’ve managed to string up an 80m Off Centre Fed Dipole over the weekend, I managed a contact to Kentucky, USA, on 20m, and got a 59 report with my 100W and his gigantic yagi of doom! Also had a half dozen SOTA contacts on 40m and 20m over Sunday afternoon, so it’s fair to say it works!
I had taken some photos, but it’s actually really hard to see it in them! It’s just some wires running through the trees.
Last night I spent some time with the local club’s MFJ analyser (Thanks Gilbert!) and got an SWR graph of the antenna as installed:
Woooo! Pretty excited, i had a day off yesterday, and in the afternoon thought I’d have a bit of a play with radios, and finally got a good DX SSB contact with my 5W OzQRP MST2. I managed to get to Europe, Coray France to be a bit more precise. It was with Frank, F5PAU, he’s running 1KW into a yagi, a pretty impressive setup!
Now that I know a bit more about antennas and why using a dipole in a yagi isn’t so good, I decided to build a new one, following the WA5VJB’s designs found on his website.
Today was the VK1 (And most of the rest of VK!) SOTA party, and I did my first ever activation on Mt Ainslie, VK1/AC-040, and had a bit of fun! I learnt just how far down the hill the activation zone starts, 25m altitude is a bit further than I thought!
Here’s my chair at the summit pole, the end fed antenna is strung up in the trees to the left.
Well, the Beach40 is boxed up and ready to test! Just working out what else I need to check before putting it on the air! Hopefully I’ll be set up at 04:00 UTC tomorrow (2014-07-08), listen out somewhere between 7.007 and 7.230 :)
Well, the soldering is finished anyway! Still have to find a box, get all the connecting hardware, shield the oscillator, and build the L-Match circuit (and maybe the fine tuning circuit, and RF pre-amp).
Have got my Beach40’s mic amplifier in, and tweaked the carrier suppression via the balance pot and cap. I’m managing a carrier suppression of 24 dB, which i don’t think is too bad for a first time homebrew build, but I do need to get some non-capacitative flathead drivers, would make these things a bit easier!
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