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Clansman HF Antenna


andym

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On 7/30/2018 at 5:05 PM, andym said:

I can't see anything obvious in any of my manuals, so: if making up a Clansman 4m HF whip from sections, is it top, middle, middle, bottom or top, middle, bottom, bottom? 😎

Andy

I used to use top middle and bottom on my 109 FOR, the middle sections for the front are longer than the rear ones. I have a set of middle sections and the carrying/storage tube available if you are interested.

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Now I'm confused!

There are three antenna sections - top (5985-99-649-8140), middle (5985-99-630-8455) and bottom (5985-99-630-8456), so one set of middles can't be longer than any others.

I now think that a 4m HF antenna is top-middle-middle-bottom  but would be grateful for confirmation.

Andy

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38 minutes ago, andym said:

Now I'm confused!

There are three antenna sections - top (5985-99-649-8140), middle (5985-99-630-8455) and bottom (5985-99-630-8456), so one set of middles can't be longer than any others.

I now think that a 4m HF antenna is top-middle-middle-bottom  but would be grateful for confirmation.

Andy

I have 2 different length bottom sections, not middle as I put in my previous post, 5985-99-630-8455 which is 1 metre long, and the other bottom section is 1.26 metres long which doesn't have an MSN on it, the middle section 5985-99-630-8456 is 1 metre long and the top section 5985-99-649-8410 is also 1 metre long. The screw thread at the bottom of the middle section is a lot bigger diameter than the thread at the top of the middle section therefore you can't join 2 middle sections together, but you can join the bottom (8455) sections together. The 4 metre HF antenna would be top middle bottom and bottom.

I hope that this makes things clearer.

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Confirmed top, middle and two bottoms for 4m (you can actually chain any number of bottoms if creative about support or guying and I have tried 3 to get near resonance on the 20m band) 

Iain

73 de G0OZS

 

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