TopBand: VK6HD & Conditions

Ward Silver hwardsil@wolfenet.com
Tue, 7 Jan 1997 18:30:48 -0800 (PST)


Because I got a lot of request for details of the W0CM Snake antenna...


The W0CM Snake is described in detail in the August 96 issue of the
Lowband Monitor.

To summarize:

			coax				  coax
	_____________________________________    ____________________
     - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
    |	_____________________________________    ____________________
    |   1 				    2    3                  4
    |			"A"				   "B"
    |
    |
    |                      125' ground radial
    o----------------------------------------------------------------
    G
    G
    G - ground rod
    G
    G
    G

The antenna is made from coax...I used RG-58C/U.

		Foam	Solid	Dielectric
Section A -     100'     88'    

Section B -      25'     37'

Total		125'    125'


At points 2, 3, and 4...solder the braid and shield together.  Yes, that
makes section B look like a big fat piece of wire...just do it :-)  Solder
sections A and B together at points 2 and 3.

The feedpoint (point 1) is tricky - connect the center conductor of the
coax to your receiver to the SHIELD of the section A coax at point 1.
Connect the shield of the coax to your receiver to the CENTER CONDUCTOR of
the section A coax at point 1.  Ground the CENTER CONDUCTOR of the section
A coax at point 1 to the ground rod.

Support the whole thing 8' or so above the ground and enjoy!

I haven't got the theory figured out yet, but it works for me.

73, Ward N0AX


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