Repair the antenna day, 10-Nov-2018 9am

I think this would be better postponed until a plan has been formulated.

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What size/voltage/type of caps do you need?

I’ll have to dig up my notes, but as I recall the values are 10-500 pF, 15-25KV vacuum variable.

There is a very high voltage across the cap during transmit. The other fun part is there is a very high RF current in the loop, so 1" or bigger copper or aluminium is ideal. Minimum resistance in any joints is also important.

Since you want to use a loop that is < 0.1 wavelength, two loops is the solution I’ve been working on. One about 3 feet in diameter for 10-20m, and one 6 feet in diameter for 40-80m.

Here’s a good site for info:
https://www.nonstopsystems.com/radio/frank_radio_antenna_magloop.htm

You have a PM with a probable source.

Tomorrow still on?

Isn’t there a device in the metal shop specifically for doing this?

Yes we have the Horror Freight roller. It should do 1” no problem. Worst case you can bump bend 1 1/4” od Tube

Was just found out I should have a ride out there tomorrow.

If people forget or if they don’t have one they could bring, I remember someone donated a handful of FRS bubble pack radios to logistics.

Cool, I think my baofeng is still in like 6 pieces in my backpack. Stupid mic connector bent so that if there’s no mic in it doesn’t xmit.

before

black, red, yellow, green

after

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I got a few photos during the repair of the base that I thought I’d share

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And at the other end of the coax Adam checks out the radio.

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