And now for something weird...

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Wendy

Joined Mar 24, 2008
23,800
If you had met me face to face you might have a different opinion. With posts I have a chance to think about what I'm about to say. This gives me time to tone down a rude response, which doesn't exist when your mouth is engaged. Still, you have to try to be right.
 

cmartinez

Joined Jan 17, 2007
8,803
If you had met me face to face you might have a different opinion. With posts I have a chance to think about what I'm about to say. This gives me time to tone down a rude response, which doesn't exist when your mouth is engaged. Still, you have to try to be right.
A sharp tongue is a tell of an acute mind... if that's the case, then you have a gift... all you have to do is learn how to use it...
 

SamR

Joined Mar 19, 2019
5,512
He has provided quite a bit of entertainment over the years. It was just a few days ago I Googled him to see why he had been so quiet of late and saw that he was to be extradited from Spain. Didn't even know they had him locked up, always figured he was headed to an asylum to be locked away. The old boy had some serious demons chasing him about...
 

SamR

Joined Mar 19, 2019
5,512
Usually, a half or full wave dipole. So, circumference of slinky x number of turns. With an antenna tuner you can make just about anything resonate w/ low SWR albeit not that well. When roller inductor tuners became popular in the 70-80s an aluminum lawn chair was a common "ham shack trick".
 

Alec_t

Joined Sep 17, 2013
15,132
Reminds me of that corny old Christmas cracker joke :
"How can you tell if an elephant's been in your fridge?"
"From the footprints in the butter."
 

Delta Prime

Joined Nov 15, 2019
1,311
I'd like to know the basic math behind that slinky antenna...
It's a helical antenna a rubber ducky on steroids
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Ref. 17: "Directional helical antennas" [slinky 2-element beam], I. Kapustin (UA0RW), in "Antentop", Nr. 12, 1-2010; reprinted from "Radio", Nr. 7, 1958, pp. 34-35
Ref. 18: "Helical Antennas", Howard King, Jimmy Wong, Chapter 13, 24 pp. in "Antenna Engineering Handbook", Richard C. Johnson, 3rd ed., McGraw-Hill, 1993.
Ref. 19: "Tunable Spiral Dipole Antenna", Sidney Arrow, US patent Nr. 3,858,220, December 31, 1974.
 
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