Dan, I am very interested in just how you went about using your crank-up tower
as a vertical. Did you
load the cable or the tower structure itself? Did you shunt feed it via a
gamma match? How much power
were you running? I have a motorized Triex LM-470 here and would like to do
the same. However, I was
warned that there might be some problems with high voltages between the unwound
cable (assuming one uses
it as the conductor) turns on the winch spool and/or other mechanical portions
of the tower raising
I would be interested in a detailed description of your arrangement.
Jim: I have shunt fed 2 different crankup towers at various times and
had no problems in either Dallas or Spokane. Neither are particularly
corrosive climates. YMMV. I have seen no indications of intermittent
contact or variations in SWR. Go for it. 73, Dan, N5AR
Jim Reid wrote:
> Can a "crank up' be shunt fed? Suspect not, too
> discontinuous. I have an MA-550. Maybe
> the cable itself would look continuous to the signal?
> Just a question; anybody done it? I have a Force 12
> C4 atop mine up about 15' on a mast going on up from
> the top of the 550.
> 73, Jim KH7M