I have a HF land mobile whip which has a male end (still 1/2" Whit) so I used a 1/2" joining (construction-use) collar that I bought at Bunnings some years ago, screwed that tightly to the base of that whip, and then it became compatible with the SAM base on the front bullbar of the 4WD - the one that suits some of my other (1/2") amateur HF whips ! I used a second steel collar and a suitable sized/thread steel bolt (5/16", 26TPI) plus some welding skills to fabricate a heavy adapter to use on the SAM to adapt for my 5/16" helical HF whips too.
RE: Antenna Base Thread
VK2CSW > 06-05-2020, 08:58 PM
Hi Doug,
Thanks. 1/2" BSW it is then.
I have fired off an email to Mobile One to see how much the SAM mount is.