[TenTec] 75 Ohm twin velocity factor ?

[Steve Hunt]

Hi Folks,

Sorry if this is a bit "off-topic" but .....

.....  does anyone know the typical velocity factor of commercial 75 Ohm twin feeder?

I'm playing with alternative feed arrangements for my HexBeam and need to know a "ballpark" figure.

Thanks in advance for any help.

73,
Steve G3TXQ