[TowerTalk] What diameter guywire for a 20ft mast - 2m vetical antenna? Sources?

[Craig Sharrow]

I'm putting a 20' telescoping mast consisting of 2 10-ft 1.75" diameter tubing
on top of the roof of my house, which will have a 9foot Diamond CP22E  2meter
vertical antenna atop it.  I plan to have 4-guys at the top of the mast, and 4
guys mid-mast.  The mast assembly will have a 3ft tv antenna tripod as its base.

I live in Marin County, California, half-way up a southeast-facing 800' hill
that 
Sees occasional winter wind gusts of 50-60mph and often has 20-30mph winds

Can I use the cheap 4-strand 20gauge RadioShack stuff or do I need something
like
3/32" EHS?
 
  
K9LEG at sharrow.com
http://K9LEG.sharrow.com