Steve,
My tower runs for 3 2x stacks are straight to base entry panel grounded
at a small shed (4x6x8') I built next to the tower base. I used the
commercial tower rubber bushings as entry panel pass thru's. Then the
phasing lines are connected (DINs) and coiled and stored in the shed
rafters. Three coils of LDF5 since these are 10/15/20 stacks. We did
TDR the full lengths to match them. I didn't want the connectors out in
he weather and the coils on the tower. All 6 LDF5 are connected to the
StackMatches with equal length DIN to PL jumpers of LMR400.
For the Heliax bonding, I used the Heliax grounding kits outside to the
shed entry panel. Then the StackMatches also bond inside the shed to
the tower ground system. So far (6yrs), no issues and the stacks work.
If you would like some pictures, contact me off list.
Grant KZ1W
On 2/27/2023 05:14, Steve Walter wrote:
Using a StackMatch and equal coax lengths is there any advice for the
excess coax in a two-stack. 80' and 50'. I would prefer to coil the
excess 30' AFTER the shield ground at the base. This would mean one 80' run
would be continuous to the base ground block and the other would be
grounded at the 50' length and the excess coiled. Does this significantly
affect phasing? Or should I just coil it and then go to the ground block
so they would be identical?
Is coiling further up the tower acceptable? Im also wondering how the
coil location affects lightning protection of the coax.
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