222-MHz Progress
(As of March 21, 2004)
I have a commercially built amplifier for 222 that I got from PAØC. It was supposed to cover the 222-MHz band but not without significant modification. I have a preamp built, and still need to work on the 2 element quad feed but I am very close to QRV. The amplifier currently will only put out 320 watts. I have another modification in mind to beef this up a bit. It should be double that. Take note of the before and after pictures to see what I actually had to do to get this amp on 222. I had to extend both the input tuning and output tuning lines.
 1before.jpg 61.76 Kb |
 2after.jpg 68.89 Kb |
 3inbefore.jpg 181.15 Kb |
 4inafter.jpg 70.97 Kb |
 5stub.jpg 60.73 Kb |
 6overview.jpg 73.36 Kb |
 7preamp.jpg 76.35 Kb |
 8preamp2.jpg 77.19 Kb |
 MVC-007a.JPG 70.97 Kb |
 overview.jpg 73.36 Kb |
 testbench.jpg 80.86 Kb |
 tuningdisks.jpg 120.86 Kb |
 view1.jpg 118.25 Kb |
 view2.jpg 127.64 Kb |