UPPER RADIATOR/COIL ASSEMBLY
Refer to Figure 3.
Select the V3R Coil Assembly. The coaxial
cable
wili
attach to this in a later step.
Select one No. 10 compression clamp (Item 16)
and install over the slotted tube end of the coil
assembly (Item 6).
Select the 7/8" O.D. x 15" tube (Item 4) and
insert the plain end into the slotted tube of the
coil assembly 4 3/4 inches. Position the
compression clamp as shown in Figure 5 and
tighten securely.
Select one No. 6 compression clamp (Item 15)
and place over the swaged/slotted end of the
7/8" tube (Item 4).
Select the 5/8" x 15" (Item 3) tube and insert
either end into the 7/8" tube (Item 4).
Refer to Figure 4. Adjust the 5/8" x 15" tube so
dimension "A" is set for the frequency of
operation. For example, at 221 MHz, A= 27
1/4" (692 mm) See Table 1. Tighten the No. 6
compression clamp (Item 15) securely.
NOTE: The tuning charts in this manual are
accurate. However, due to variation in
installations some minor adjustments may be
required to resonate the antenna on the desired
frequency.
Select the 5/8" caplug (Item No. 17) and slip it
over the end of the 5/8" tube.
NOTE: Dimension "A" is from the top of the
coil form to the tip of the element. Dimension
"B" is from the bottom of the coil form to the
top of the radial clamps.
Item
#
Description
3
Tube, 5/8" x 15"
4
Tube, 7/8" x 15" swaged &slotted
5
tube, 1" O.D. x 48" slotted
6
Coil, V3R
15
Clamp, #6, Tubing
16
Clamp, #10, Tubing
17
Caplug, 5/8"
Figure 3
Upper Radiator/Coil Assembly
