4
ASSEMBLY
20. Line up wire clamp 15M w/insulator (K) with wire clamp 15M w/wire (L) and wire clamp 15M
w/insulator (M) and (N). Position wire clamp 15M w/insulator (K) so that the wire is moderately
taut but not so tight as to cause the upper tubing sections to bow. This completes assembly of tube
E1 w/coupling (E1) through tube (J). These may be set aside for later installation atop (B) assembly.
NOTE: In the following steps the antenna will be assembled and raised to its full vertical height, after
which the 30 meter tuning circuit will be installed. If the antenna is to be installed in an elevated
position, rooftop, mast, tower etc., where it is unsafe or inconvenient to make in-place adjustments, the
antenna may have to be installed in one piece, in which case it will probably be necessary to raise and
lower it and its supporting structure a number of times to arrive at the "ideal" adjustment on all bands. If
so, every precaution should be observed to avoid possible contact with power lines and to prevent
structural failure that can cause injury to persons or property. DO NOT USE U-BOLTS TO ATTACH
THE TUBE A W/INSULATOR (A) TO A MAST, TOWER OR VENT PIPE OR OTHER SUCH
SUPPORT, FOR U-BOLTS WILL EVENTUALLY CUT INTO THE TUBING AND WEAKEN THE
INSTALLATION. If, however, U-bolts must be used, place a larger diameter metal tube or other
suitable protective material around the mounting post tube. Similar precautions should be observed when
using TV-style towers with locking bolts. The Butternut Roof Mounting Kit (model RMK-II) includes a
protective sleeve for the mounting post tube; this tube is also available separately as model MPS for non-
permanent ground-level installations. And, always, AVOID POWER LINES!!
21. Take up the completed “B” assembly, both tubes, the 80/40 meter coils, capacitors and insert the 80
meter end, tube B2 w/insulator (B2) into the tube B1 section (B1) atop the tube A w/insulator (A).
Slide the completed “B” assembly into the tube B1 section (B1) so that the distance between the
bottom of tube B1 section (B1) and the upper end of tube B2 w/insulator (B2) is 48 inches, see
pictorial. Place a pencil mark at the point where the tube B1 section (B1) overlaps tube B2
w/insulator (B2).
The larger adjustable hose clamp may be placed over the upper slotted end of tube B1 section (B1)
and tightened at this point, but that would mean that the tube E1 w/coupling (E1) through tube (J)
assembly will have to be elevated and held with lower end some 7' above ground for insertion into
the upper tube of “B” assembly.
If one does not have the reach or if high winds are a problem during installation it will probably be
easier to install the completed “B” assembly as part of the assembly to be raised, in which case the
“B” through “J” assembly need be raised only 30" or so above ground.
In either case, use a #8 x 1 1/2" machine screw, lockwasher and hex nut to attach tube E1 w/coupling
(E1) to the upper tube of “B” assembly, tube (B3).
An overall vertical length of 26' from the feedpoint on the tube B1 section (B1) to the tip of tube (J)
can be used for most ground-level dimensions, and tube (J) can be adjusted as needed for the sake of
10 meter tuning. Alternatively, a distance of 23' 8" may be measured from the tip of tube (J) to your
pencil mark on the lower tube of section B to arrive at a preliminary length setting.
22. Locate coil support tube 30 meter (O) and the coil/capacitor assembly 30 meter (P). Coil support
tube 30 meter (O) is the short tube with a tubular plastic insulator at one end. Note that the upper end
of coil/capacitor assembly 30 meter (P) is connected to a double clamp assembly that includes a
ceramic capacitor. Place a #10 split lockwasher and a wing nut on the bolt through the lower single
clamp attached to coil/capacitor assembly 30 meter (P) and tighten just enough to hold the hardware
in place. Locate the coil support tube 30 meter L bracket (O1). Fasten this clamp to coil support
tube 30 meter (O) through the hole in the bottom using a #8 x 3/4" bolt, a split lockwasher and a hex
nut.
23. Pass the lower clamp of coil/capacitor assembly 30 meter (P) over the insulator end of coil support
tube 30 meter (O) and slide the coil downward along the tube until the upper edge of the upper clamp
is flush with the end of the plastic insulator. Position the upper clamp so that the entire upper
