[TowerTalk] Where did 0.6 come from?

[SPWoo]

I'm not an engineer by profession; so I'm not saying that this is correct.  In various software programs and Excel spreadsheets I obtained from ham-related sources use a Cd of 1.2 for round members and 2.0 for flat members.  A specific example of this is the AntennaMast Calculator that came with the ARRL Antenna Handbook.

 
Best Regards,
Jonathan Woo, W6GX
(970) 646-1711