1:1 or 1:4 for inverted L HF antenna ?

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mancow

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I have had HF transceivers for years but never really had a decent antenna up long enough to get a feel for the subtleties of the bands. I posed earlier that I seem to have a consistent S9 noise level with this new antenna configuration. Well, now it's back down to a nice acceptable level and signals on 80 meters are really popping.
 

kb2vxa

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I'm still trying to figure out what the balun is for and now a resistor? It gets curiouser and curiouser dear Alice. Speaking of a vertical loop, why not take it a step farther and do a Moxon? All you need is real estate and a copper spider.
 

mancow

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That's what they said to use on the drawing I found. They said a 1:1 balun but yes nothing at all would work too. Someone said a 1M ohm resistor would help to bleed off static buildup but I don't know. It didn't cost anything so I tried it. Obviously, it doesn't harm the performance.
 

kb2vxa

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It would be nice to supply the drawing, I'm dumbfounded. The only "balun" I've ever heard of used on a long wire type is a 9:1 un-un to decouple the coax from the antenna without grounding the shield at the far end. In the far end grounded configuration it's grounded AT the ground, hence the inverted L previously illustrated. Actually I've never heard of that particular un-un used for transmitting, always for SWLing.

As a footnote, both sides of a 1:1 voltage balun are "DC grounded" to the coax shield and when earthed bleeds off any static charge; don't count on anything to dissipate an EMP spike from a nearby lightning strike though. I lost the front end of a receiver to one so the proof is in the putting, unscrew the connector and put it on the floor. Oh BTW, don't put it in a glass jar as some on this forum have suggested unless you are making some of Gordon West's famous blazing pickles.

One last thought, a NON INDUCTIVE resistor will bleed static electricity (not radio static) to some extent without affecting performance BUT an EMP discharge will blow it wide open rendering it useless. You get both in a thunderstorm so to quote a line in Animaniacs spoken by Tom Beaudette (of Motel 6 "we'll leave the light on for you" fame)... "Good idea, bad idea."
 
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