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Sunday, 1 May 2016

Slim Jim antenna revisited

As you may be aware, I built a Slim Jim antenna for 2 meters at the club sometime over a year ago but left it on the floor in my hallway for some time so I think it suffered damage and put the SWR above safe levels, upon suggestions from two other club members I intend to build another Slim Jim, after finding some instructions on the Internet, out of 450 Ohm ladder line, with the antenna enclosed in conduit either in a dark colour or painted in wood stain to blend in with my windows(the new windows are a dark wood effect outside) as the intention is this antenna is put outside, I've seen instructions that suggest to use a clip-on ferrite to stop common-mode currents but I may use the tried and tested choke approach instead.

I plan to get the feeder for this antenna into the flat by using a short piece of thin coax through the window so it will still shut, and running a short length of RG213 inside to keep the losses down, rig wise at the moment will be my Leixen VV-898 until I obviously get something that can do SSB as well, at the moment my rig purchasing priority is for the Yaesu FTM-100DE for the car and a replacement 2/70 antenna as the small one I currently have isn't brilliant and I'd rather have something improved for System Fusion, though I might try this out on the Slim Jim before it goes in the car assuming I get this antenna built and up before the rig is ordered (or bought from the Hamfest in September)

Before I do this I need to make sure my "shack" is in order again which I can spend tomorrow doing as it's a Bank Holiday, then I'll move on to getting hold of the parts I need

73 de M6RSQ

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