K7YO 1.2 Ghz operations - 1296.1 Mhz
The 24 ring looper yagi array fed in phase with an odd 1/4 wavelength of 1/4" Superflex 75 ohm.coax.
The 0.7 db DEMI preamp with 1/2" hardline and low loss coax relays. The FT-736 really needs this to hear the weak ones.
The twin 7289 tube, water-cooled, 1296 Mhz amp that I hope to get going someday. Got spare tubes, anyway!
A coffee can antenna I built for 1296 Mhz. This works and matches well; probably with about 10 dbi gain. Someday I plan to mount it as a feed inside a 10 foot TVRO parabolic dish.
Also shown is a Philco/Sierra SWR/Wattmeter with 200-1000Mhz slug. These and the Struthers AN/URM-120A are a real bargain. The US Gov. paid $1700 for them!
Quadrifilar Helix Antenna theory
Wi Fi
cantenna design