Inspiration for this project came from Craig WB3GCK, all credits to Craig 🙂
First, this device is not SOTA compliant, however the drive-on mast support is an excellent way to support a lightweight telescopic pole and a HF or VHF antenna for a Field Day, Parks or WICEN (EMCOM) deployment.
Position a car wheel on the board (the flange should be facing away from the car body), screw the 1 1/4 inch pipe into the flange and secure your lightweight telescopic pole to the galvanise pipe using two or three short tie down straps or a method you prefer.
Materials purchased from a local large-scale hardware store:
- 7 ply marine timber 3/4 x 8 x 23 1/2 inches (19 x 200 x 600 mm)
- 1 1/4 inch BSP 4 hole galvanised flange
- 20 inch (500 mm) length of 1 1/4 inch threaded galvanised pipe
- 4 x 8 mm x 40mm pan head galvanise bolts
- 4 x 8 mm nuts and flat washers
- 1 x 2.5 inch length of 1.5 inch dia heat shrink tube (60 mm x 40 mm dia)
- Cabothane or water-proof paint
Next disassemble the pipe and flange and apply two coats of water-proof Cabothane or paint to the board.
Assemble when dry 🙂
Get out of the Radio Shack and Live Life 
hey great idea with the flanges
All Craig’s handy work.
The concept is in keeping with the philosophy of QRP – nice and simple. Love it. This is good also for deploying a lightweight yagi.
Grant VK4JAZ
Looks good, Andrew. I like the shrink wrap on the pipe threads. Great idea! 73, Craig WB3GCK
Thanks Craig, I hadn’t made a connection to using a flange mount until I saw your post. Brilliant and so simple, a credit to your imagination. Thanks for the inspiration. 73 Andrew VK1AD