[SMCARA] More antenna fun from W4OKW

[Clarke, Tom AIR4.0P NATOPS]

 Hi Ed,

The antenna has found a new home - our esteemed Professor, Tom AB3IC.

Tom/W4OKW

-----Original Message-----
From: KC0WKX at tannercreek.com [mailto:KC0WKX at tannercreek.com] 
Sent: Thursday, June 16, 2011 5:05 PM
To: Clarke, Tom AIR4.0P NATOPS
Subject: Re: [SMCARA] More antenna fun from W4OKW

Tom,

I would be interested in both the antenna's (the Wilson Systems SY-33
also) I am on EMT duty all day Friday down in Ridge (6 AM - 6 PM) but
can be available Saturday or Sunday if it is still available...

Thanks.... 

Ed Pratt
kc0wkx




On 6/16/2011 3:42 PM, Clarke, Tom AIR4.0P NATOPS wrote: 

	This is a shortened folded dipole antenna for a
	single band. Shortening the dipole raises the 
	input impedance and the vertical section is a
	9:1 transformer, magically making it 50 ohms
	at the balun. Somewhat narrow, but covers most 
	of the 40M and up freqs.
	
	73 Tom
	                 390/fMHz
	___________________________________________
	|__________________   _____________________|
		             |  |		 
		             |  |		 
		             |  |	190/fMHz	 
		             |  |		 
		             |  |		 
		             |  |		 
	                   ____
	                   | B |  1:1 Current Balun
	                   ----
	                     |    50 Ohm Coax feed (any length)
	                     |
	
	
	
	Band	Top Section	Vert Section	Remarks
	3.3	118 Feet	51 Feet		MARS Freq
	3.7	105 Feet	46 Feet		75 Meters
	4.1	98 Feet	42 Feet		MARS Freq
	5.4	72 Feet	35 Feet		60 Meters
	7.2	55 Feet	24 Feet		40 Meters
	10.1	39 Feet	19 Feet		30 Meters
	14.2	27 Feet	12 Feet		20 Meters
	18.15	22 Feet	9 1/2 Feet		17 Meters
	21.3	18 Feet	8 Feet		15 Meters
	24	16 Feet	7 Feet		12 Meters
	28.4	14 Feet	6 Feet		10 Meters
	50.15	8 Feet	4 Feet	 	6 Meters
	146	2 3/4 Feet	1 1/4 Foot	 	2 Meters
	
	Formula =	390/fMHz	190/fMHz	450 Ohm Window
line
			415/fMHz	188/fMHz	300 Ohm Twinlead
	No tuner reqd unless trying to force to another Band.
	
	
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