I'm in the process of putting up a second tower which will have stacked tribanders. These 3 tribanders will be fed via a Stack Match with equal lengths of coax. My current tower also has a tribander.
If the towers are being used for spraying in different directions there is no need to equal length coax. John KK9A I'm in the process of putting up a second tower which will have stacked tribanders.
I would not do this plan .... 1. 1.5 kw split equally (good question itself) FOUR ways is 375 watts for each antenna. Someone with more data can compute the ERP and directions. 2. Most useful, simple
Rich, As I am sure you are aware, if the two antennas/arrays are in phase the field strengths add and if out of phase subtract. Feed line length is only half of the question in regards to phase. The
I have been told by others that KK9A is wrong and that having two different coax lengths will present different impedance and different phase to the different antennas, in some case being lucky and o
Rich, Let me respond to your questions and I'll also comment on several of the comments you have received from others, so far. First of all, let me state my understanding of your 2nd tower: 3 triband
Ah, the unidentified "others" who don't identify themselves. As long as the two antennas are pointed in very different directions, so that the gain in the two directions is very different, there is n
Hi all, I cannot verify this theory in practice. I have, on 20, 15 and 10 stacked yagis on two towers. The towers are broadside to U.S East Coast and are in-line to JA. If this pattern nulling theory
I would bring one of the feed lines first into the shack and then out to the switch. Then you might make use of an adjustable or switched phase shift unit to avoid pattern distortion and gain impact.