ASSEMBLY INSTRUCTIONS
(continued)
The C
13P
clamp is round when received. It must be made egg shaped enough to allow the nut NO 1
to go between the clamp
C13P
and the
BAlP
base assembly.
The base section can be mounted two ways:
On a mast with an outside diameter of up to 1
3/S”,
first position clamp ring
C13P
on the base and
install the
5/l
6 x 1” hex bolt and nut S24, NO 1 as shown. Turn the bolt down firmly onto the mast (ref. 2D).
On a mast with an inside diameter from 1 l/2” to 1
3/4”,
first position the clamp ring
C13P
with the
5/l
6 x 1” bolt and nut, S24, NO 1, as shown, over the base.
Slide the base into your mast about 6” and tighten
the bolt down onto the base.
ADJUSTING THE STANDING WAVE RATIO (SWR)
There are only two possible adjustments to change from those in the instructions. One is the position
of the clamp CO1 on the ring. It is recommended that if the
SWRis
about the same on both ends of the band,
this adjustment be left alone. Adjust only to try to get the same SWR at both ends of bond covered.
The other adjustment is the length of the antenna.
This should be changed at the top of the base
section. Loosen clamp WlOP and adjust. It is recommended that you work in l/4” increments so as to tell
if you are going in the right direction.
REMEMBER THIS ANTENNA REACTS TO EVERYTHING IT CAN SEE; THIS MEANS
THAT TREES, POWER LINES, BUILDINGS, AND OTHER ANTENNAS AT THE SAME HEIGHT
WILL AFFECT THE SWR.
FREOUENCY TO LENGTH CHART for V58 26-33 Mhz Antenna
THIS CHART MUST BE USED TO SELECT THE OVERALL LENGTH FOR THE ANTENNA.
FF=Q
Mhz
26.0
248”
27.0
240”
28.0
232
518”
29.0
225
314”
30.0
215
l/4”
31.0 209
l/8”
32.0
203
112”
33.0
198
l/4”
OVERALL
LENGTH
NOTE:
These measurements are for the overall length of
the antenna. This means the top is where the plastic
cap goes and the bottom is below the hole for the
mounting bracket
C13P.
IF THIS ADJUSTMENT IS NOT MADE
THE ANTENNA WILL NOT WORK
CORRECTLY!
NOTE: To use at other frequencies25-50 mhz, change the length.
3
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