Did you see my video for the UHF one for, well UHF and PMR. I used that strapped to my Bergen! We do have 25mm in the UK but it is electrical conduit and not water pipe, Wickes do it and screwfix. Good luck with it
Some people strive to show something, build something, teach something, while others exist or strive only to criticize the work of others! Congratulations "wow sly"!
Had a good contact on one of these yesterday - approx 84 miles from my home in Hyde (ant in the loft!) to MW013 Corndon Hill, Welsh Borders nr Newtown. The guy was doing a Sota activation with a handheld yagi, but even so the 1/2 wave did well - a great homebrew antenna.
I have made several of these antenna's by VK2ZOI. They are quite broadband and will cover vhf marine as well as 2 m with about 1.5:1 VSWR from 146-156mhz. the dual bander will cover UHF CB (477 mhz, however, vswr about 2.3:1, 1.1:1 on 435 mhz. the coax coil choke is extremely critical, 9 turns on 25mm former, if you use say, 20mm former this increases to 13 turns, a wider former is less turns. I found this coil choke the most difficult to adjust, first make the whole antenna on the outside of your conduit, or fibgrelass, whatever you are using before final drilling. I found performance on 70cm not brilliant, my diamond x50, dual bander was far better performance signal wise than this flowerpot antenna. They called it a flowerpot antenna as it was designed to be hidden in a flowerpot complete with plastic flowers for apartment dwellers, etc.I used a surecom SA-250 antenna analyzer to test vswr, so, for those who want to dob me into the R.I's, i did not test it with a transmitter out of band, Cheers Barry, VK2FP
Nice vid. Did you test out the SWR on each of the bands? What did they look like? thanks for posting. I think I might have go at the high gain dual band flower pot antenna.
