I can only speak to the use of multiple feedlines on C-31XRs. It works
very well!
I currently have an SO2R station with a single tower install of a pair
of C51XR and a C31XR (essentially THREE stacked C-31XRs). Separate
feedlines for all bands (the C-51XRs also have a 2-element linear load
40-meter antenna at the rear of the boom). In summary, 3 booms, 4
bands, 46 total elements, and 11 feedlines down the tower to the
per-band Stack Match.
Follow the instructions in the Force 12 manual to move the driven
element to the alternate location (bracket should already be installed
on the boom).
I use an ICE 419 between each transceiver and amplifiers, then coax stub
filters on the outputs of the SixPack.
I studied and applied the principles in the book "Managing Interstation
Interference", revised Second Edition by George Cutsogeorge, W2VJN.
We also run legal limit power in multi-2 configuration without causing
damage to receivers
A diagram on my implementation is found on my QRZ bio and also on
W5WZ.com. HFTA analysis, crossband interference matrix, diagrams, etc
all found on my website.
I also know that Ted Rappaport, N9NB, uses multiple feedlines on
multiple C-31XRs with much success.
Scott Dickson, W5WZ
Louisiana Contest Club
Visit W5WZ.com
_______________________________________________
CQ-Contest mailing list
CQ-Contest@contesting.com
http://lists.contesting.com/mailman/listinfo/cq-contest
|