# Soooo, I was just thinking... (That hurt my Brain...)

Discussion in 'Antennas, Feedlines, Towers & Rotors' started by KD8DEY, Jun 11, 2019.

1. ### KD8DEYHam MemberQRZ Page

If the given formula for a 1/2 wave Dipole is 468/F(Mhz), and a full wave loop would be 1005/F(Mhz),
And at VHF the formula changes to 475/F(Mhz),....What is the formula for a Full wave loop
at VHF? I don't recall seeing it anywhere...
Guess I'll have to GooGle it some more...But all I find are references to 1005/F

2. ### KL7AJHam MemberQRZ Page

If you're using thin wire, the formula is the same. HOWEVER, if you're using tubing, you'll have to shrink it by maybe 5%

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3. ### KL7AJHam MemberQRZ Page

By the way W4RNL's books on cubical quads are the definitive authorities for loops of all kinds.

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4. ### KJ4VTHHam MemberQRZ Page

Don't forget you have to covert furlongs to fathoms and move the decibel point to the left.

Ouch! (That was my YL slapping me upside the noggin)

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5. ### KD8DEYHam MemberQRZ Page

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6. ### KD8DEYHam MemberQRZ Page

Can't find a reference to the Quad book, But there is a 2 volume set on E-Bay that I'm not bidding \$60 on...

7. ### K5WZIHam MemberQRZ Page

Maybe its 468 is to 475 as 1005 is to WHAT or 468/475 = 1005/X and X = 1020 or maybe its not.

8. ### WB5YUZHam MemberQRZ Page

468/f and 1005/f are only guidelines, not true formulas. They do not produce precise results, only starting points.

AD5HR, KC8VWM, KD8DEY and 1 other person like this.
9. ### KP4SXXML SubscriberQRZ Page

They are really good with nacho cheese.

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10. ### KD8DEYHam MemberQRZ Page

If it's Nacho cheese, you shouldn't be eating it...
I really like Chili cheese, Especially Chili chese fries...

On the serious side... (Oh S(Censored)TT!!, Bubba's being serious)
Anybody got the book that can give me the ISBN??

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