Maco Antennas M107C User manual

7 ELEMENT - 11 METER
MAXIMUM BEAM
M107C
www.macoantennas.net

MACO M107C
PACKING LIST
PART QTY OD SIZE LENGTH DESCRIPTION CHECKLIST
T52P 2 2” .060 ” 80” ALUM. TUBING SLOTTED ONE END ____
T31P 2 2”. .060 80” ALUM TUBING SLOTTED ONE END,
SWAGED ONE END TO 1.835 ____
T64P 2 2 .060 72” ALUM TUBING SWAGED ONE END TO 1.835 ____
T53 1 1.845” .060” 80” ALUMINUM TUBING ____
T11P 7 5/8” .050” 72” ALUM. TUBING SLOTTED BOTH ENDS ____
T04 2 ½” .050” 80.5” ALUMINUM TUBING ____
T01 12 ½” .050” 72” ALUMINUM TUBING ____
PO3P 1 ¼”x6” 8” PLATE 2” BOOM TO 2” MAST ____
V03P 1 1”x1” 24” VERTICAL GUY SUPPORT ____
WD5P 1 6/18 60’ STEEL GUY CABLE ____
G01P 1 GAMMA MATCH ____
Z08P 2 GAMMA STRAPS W/COAX CONNECTOR ____
S42 1 FEMALE COAX CONN. W/MOUNTING NUT ____
HARDWARE BAG #1
S01 20 2” PLATED SADDLES ____
HARDWARE BAG #2
U01 20 2” PLATED U-BOLTS ____
N03 42 5/16” LOCK NUTS ____
HARDWARE BAG #3
BE2P 7 2” BOOM TO ELEMENT MOUNTS ____
BG2P 4 GUY MOUNTS ____
N18 6 5/16” EYEBOLTS – WITH (12) NO1 NUTS ____
HARDWARE BAG #4
W58P 16 5/8” EXTRUDED ALUMINUM CLAMPS ____
S21 22 10-24 ½” MACHINE SCREWS ____
PL2 14 .437 PLASTIC CAPS – BLACK ____
N11 22 10-24 SQUARE NUTS ____
PL5R 1 2” PLASTIC CAP – RED ____
PL5 1 2” PLASTIC CAP – BLACK ____
EG2 10 EGG INSULATORS ____
N12 4 #10 LOCK WASHERS ____
Z02P 2 GAMMA STRAPS ____
1 TIP SHEET ____
1 WARRANTY SHEET ____
1 INSTRUCTIONS ____
Please note: In an effort to keep the price on Maco Antennas down, we have decided not to clean up all the
burrs and rough edges on the parts. We recommend that you deburr and clean up each part with files,
sandpaper, etc. so that they go together easily. We are aware this needs to be done but have elected not to
do it to save you the money we would have to add to the price of the kit for this service.
Revised 05/09

I
1.054M (41.5)
DRIVEN ELEMENT
GAMMA MAiCH
/
FIRST DIRECTOR
DIRECTION OF
RADIATION
/
THIRD ’
SECOND DIRECTOR
II
DIRECTOR
2” 0 D. MAST
VERTICAL POLARIATION (‘=U~TOMER FURNISHED)
) ‘J
FOURTH DIRECTOR
FIFTH DIRECTOR
BLACK PLASTIC CAP (PL4)
REFLECTOR
/- L
-
3RIVEN ELEMi%
GAMMA MATCH
I. ,w3M (83”)
1.054M (41.5”)
/=---‘-- 1.054M (41 S’)
e-,
/==-%I 08M
(83”)
FIRST DIRECT
THIRD DIRECTOR FOURTH DIR DIRECTION OF
RADIATION
;;;&~o;~;;uRNlsHED) FIFTH DIRECTOk
RED PLASTIC CAP (PL4R)
c@@i
HORIZONTAL POLARIATION
FIGURE 1 GENERAL INSTRUCTIONS
This drawing shows a view of the antenna assembled. The M107C may be used vertically or
horizontally. These instructions and FIGURES 2 through 4 show the correct assembly instructions. It is
highly recommended that rope be put in the elements to prolong their life. All hardware should be tightened
securely, and then coated with silicon rubber sealant or similar compound to prevent loosening from wind
vibration.
Take care to locate all parts accurately per dimensions given. Complete each step as instructed before
going on to following steps.
Upon completion of assembly, install the red plastic cap (PL4R) on the director end of the antenna,
and the black plastic cap (PL4) on the reflector end. This will allow you to determine at a glance the direction
of transmit and receive.
M107C
2

" /
CENTER BOW4 SECTION (T52P)
81
VERTICAL 6UY
BOWl COUPLER (T53)
SUPPORT (VO3P)
r'
--BOON-TO-MST Pu\TE WCIIP)
CENTER BOCh’l SECTION (T52P)
J-- BOWI COUPLERSECTION (T53)
U
2' U-BOLTS (UOl)
2' SADDLES (sol)
5/16
k
OCKWASHERS (N02)
5/16
o( NUT (NO11
FIGURE 2 BOOM ASSEMBLY
First mark the center of the boom coupler (T53), then slide the unslotted ends of the center boom
sections (T52P) over each end of the coupler so they butt at the center mark.
Attach the boom-to-mast plate (PO 1P) and the vertical guy support (VO3P) at the boom center using
2” U-bolts, saddles and hardware as shown in Figure 2A.
Be sure to slip the 2” U-bolt for attaching the guy
support over the boom before securing the mast plate (POlP).
Slide the swaged ends of the intermediate boom sections (T63P) 6” into the slotted ends of the center
boom sections. Secure with 2” U-bolts, saddles and hardware as shown in Figure 2B.
Slide the swaged ends of the end booms sections (T28) 5” into the slotted ends of the intermediate
boom section and secure in the same manner as above. The overall length of the boom should be
approximately 443”. If not, adjust the end sections equally until the overall length is at least 443”.
3 M107C

I
,
I
Please read the Assembly and Troubleshooting Tips at the
end of this instruction booklet before assembling elements.
I
I
4
- 5,F
I
-. J
, MACHINE SCREW (52 I)
ALUM CLAMP (W&P) ’
SQUARE NUT (N I I)
112”’ 0.D TUBING
(TO I IT04P)
2” U-BOLT (UO I )
2” SADDLE (SO I b
BOOM-TO-ELEMENT MOUNT(EE2P)
LOCKWASHERS (NOZ)
HEX NUT (NO I)
O.D. TUBING
(TI IP)
- “B”
I .828M (72”)
FIGURE 3 ELEMENT ASSEMBLY AND MOUNTING
Select a frequency in the center of where you work from the chart on pages 6 or 7 and follow across
for element dimensions “A” & “B”. To assemble the elements, slide a piece of l/2” O.D. tubing (TOl) into
each slotted end of the 5/8” O.D. center section (Tl 1P). Allow equal lengths on each end to arrive at the
specified overall length (Dimension “A”) as shown in Figure 3B. Be Accurate! Verify the overall length.
Slide a boom-to-mast mount (BElP, BE2P) to the center of each element before securing the joints
with clamps and hardware as shown in Figure 3A.
Install elements on boom per dimensions in Figure 1, with U-bolts, saddles, and hardware as shown
in Figure 3B. Be accurate as possible, and be sure the elements are exactly centered on boom before tightening
clamps.
M107C
4

BOOM-TO-MAST PLATE (PO1 P)
WITH BOOM ATTACHED
2” U-BOLTS (UOI)
SADDLES (Sol)
5/16” NUTS IN011
5116” LOCKWASHERS (NO
EYEBOLT (N18P)
(CUSTOMER FURNISHED)
/
SECURE WITH THESE NUTS
AFTER TENSIONING
TENSION GUYS WITH THES
GUY CABLE (WDZP)
CUT OFF EXCESS
WRAP FIVE OR MORE
EGG INSULATOR (E
VERTICAL GUY SUPPORT
TIMES
FIGURE 4 GUY ASSEMBLY
Cut eight pieces of guy cable .609M (24”), two pieces 2.286M (83’7, and two pieces 2.286M (90”). Assemble 5/16”
hex nut (NO 1) onto each of the eyebolts (N 18P). Turn the nut all the way to the eye; as far as it will go with light pressure only.
These will be used to secure the eyebolts after guy tensioning.
Install eyebolts into the top holes of the vertical guy support (VO3P) - one eye each direction. Install one eyebolt in
the top hole of each of the four guy mounts (BG2P, BG3P) with the eyes towards the center of the boom.
Thread a hex nut
about six turns onto each eyebolt.
Thread four .609M (24”) guy cables-Zeach into the upper eyebolts, wrap five or more times and cut off the excess.
Thread remaining four cables 609M (24”) guy cables into each of the lower eyebolts, wrap it five or more times and cut off
the excess. Install an egg insulator (EGl) on each .609M (24”) guy cable leaving only .304M (12”) between eyebolt and egg
insulator. Wrap and cut off excess.
Using the remaining 2.108M (83”) guy cable, thread one end through the top egg insulator of the inner cable. Wrap
and cut off excess. Thread the remaining end through the insulator on the cable nearest the center of the boom. Pull tight
enough to remove slack only. Wrap. DO NOT cut off excess. Ref. Figure 5.
Using the 2.286M (90”) cable, thread one end into each insulator of the remaining .609M (90”) cables, wrap and cut
off excess. Install an egg insulator onto the lower 2.286M (90”) cable, wrap and cut offexcess. Using the upper 2.286M (90”)
cables, thread it through the insulator of the lower 2.286M (90”) cable. Pull tight enough to remove slack only, , wrap and
cut off excess.
Return to inner cable, unwrap the uncut cable and retighten to remove any slack only wrap and cut off excess. Tension
guys by tightening the nuts on the ends of the eyebolts. Secure with the nuts on the opposite end near the eye.
Line the elements up with the use of a level or any other workable method. Double check the spacing dimensions
and make sure the elements are centered in the boom-to-element clamps. Tighten all hardware taking care to line the elements
up with the use of a level. Check your measurements and make sure the elements are centered on the boom.
5
M107C

CB FREQUENCIES (11 METER BAND)
4-7
27.005/27.035
5.638M 1.6991\/ 5.359M 1.765M 5.156M 1.663M 5.105h’ 1.638M 5.054M 1.612M 5.029M 1.600M 5.029M 1.600M
(222”) (75”) (21 1”) (69.5”) (203”) (65.5”) (201”) (64.5) (199”) (63.5”) (198”) (63”) (198”) (63”)
8-1 1
27.055/27.085
5.638M 1.6g!W5.334N 1.752M 5.130M 1.638M 5.105N 1.638M 5.029M 1.600M 5.003M 1.587M 5.003M 1.587M
(222”) (75”) (210”) (69”) (202”) (65”) (201”) (64.5) (198”) (63”) (197”) (62.5”) (197”) (62.5”)
12-15
27.105/27.135
5.613M 1.686N5.334M 1.752M5.130M 1.638M 5.105K 1.638M 5.029M 1.600N 5.003M 1.587M 5.003M 1.587M
(221”) (74.5”) (210”) (69”) (202”) (65”) (201”) (64.5) (198”) (63”) (197”) (62.5”) (197”) (62.5”)
16-19
27.155/27.185
5.613M 1.686N5.334M 1.752M 5.130M 1.638M 5.080N 1.625M 5.029M 1.600N 5.003M 1.587M 5.003M 1.587M
(221”) (74.5”) (210”) (69”) (202”) (65”) (200”) (64”) (198”) (63”) (197”) (62.5”) (197”) (62.5”)
20-25
27.205/27.245
5.613M 1.686M5.308M 1.739M 5.105M 1.625M 5.080N 1.625M 5.003M 1.578N4.978M 1.574M 4.978M 1.574M
(221”) (74.5”) (209”) (68.5”) (201”) (64.5”) (200”) (64”) (197”) (62.5”) (196”) (62”) (196”) (62”)
26-29 27.265127.295 5.588M
1.674N 5.308M 1.739M 5.105M 1.625M 5.054M 1.612M 5.003M 1.578M4.978M 1.574M 4.978M 1.574M
(220”) (74”) (209”) (68.5”) (201”) (64.5”) (199”) (63.5”) (197”) (62.5”) (196”) (62”) (196”) (62”)
30-34 27.305127.345 5.588M
1.674N5.283N 1.727M 5.080M 1.625M 5.054N 1.612hf: 4.978M 1.574N4.978M 1.574M 4.978M 1.574M
(220”) (74”) (208”) (68”) (200”) (64”) (199”) (63.5”) (196”) (62”) (196”) (62”) (196”) (62”)
35-39 27.355/27.395
5.562M 1.661 w5.283K 1.727M 5.080M 1.625M 5.054N 1.612N 4.978M 1.574N4.953M 1.562M 4.953M 1.562M
(219”) (73.5”) (208”) (68”) (200”) (64”) (199”) (63.5”) (196”) (62”) (195”) (61.5”) (195”) (61.5”)
40 27.405 5.562M
1.661 hf 5.283M 1.727M 5.080M 1.625M 5.029N 1.600M 4.978M 1.574M 4.953M 1.562M 4.953M 1.562M
m
(219”) (73.5”) (208”) (68”) (200”) (64”) (198”) (63”) (196”) (62”) (195”) (61.5”) (195”) (61.5”)
<

AMATEUR FREQUENCIES (IO METER BAND)
DRIVEN
4.978M
(196”)
1 st DIRECTOR 4.800M
(189”)
2nd DIRECTOR 4.699M
(185”)
3rd DIRECTOR 4.699M
(185”)
4th DIRECTOR 4.699M
(185”)
5th DIRECTOR 4.699M
(185”)
INE
cw
MHz
28.100 MHz
B” A”
B”
1.496M 5.334M 1.547M
(67”) (210”) (69”)
1.574M 5.080M 1.625M
(62”) (200”) (64”)
1.485M 4.876M 1.524M
I I
(58.5”) (192”) (60”)
1.435M 4.775M 1.473M
(56.5”) (188”)
(58”)
1.435M 4.775M 1.473M
(56.5”) (188”) (58”)

INNER CABLE DIMENSIONS
CABLE LENGTH
DIMENSIONS
OUTER CABLE DIMENSIONS
(24”) (24”)
\
(90”)
. (70”)
.
n
(24”)
CABLE LENGTH
--Y-i,-
DIMENSIONS
Ml07C

* NOTE: THESE DIMENSONS ARE APPROXIMATE.
REFER TO THE INSTRUCTIONS ON ADJUSTINNG THE
S.W.R. TO DETERMINE EXACT SETTINGS. THERE
ARE2 SEPARATEGAMMAADJUSTMENTS, l.CAPACI-
TOR ADJUSTMENT, 2. SLIDER POSITION.
DO NOT MOVE BOTH AT THE SAME TIME. MOVE
THE CAPACITOR FIRST, THEN, IF NECESSARY MOVE
THE SLIDER, AND GO BACK TO THE CAPACITOR.
ZO8P -GAMMA STRAPS
(INSTALL FLUSH
AGAINST BOOM-TO-
ELEMENT MOUNT)
S21, Nil, N127
#I O-24 x l/2” SCRE
LK. WSHRS & SQ.
NUTS S21,
Nil, N12
#l O-24 x l/2” SCREWS
LK. WSHRS 8 SQ.
3/8” 24 NUT
318 STAR-
WASHER
ZO2P
GAMMA STRAPS
(SLIDER)
(CUSTOMER
FURNISHED)
3/8 PLASTIC SHOULDER
WASHER
3/8 FLATWASHER
- GO1 P GAMMA MATCH
FIGURE 4 GAMMA MATCH MOUNTING
Mount the gamma match (GO 1P) to the driven element, using the gamma straps (ZO2P, ZO8P) and attaching
hardware as shown. Attach your 52 ohm coaxial cable to the connector (S42) and dress along boom and down the
mast. The gamma is shown pointing down - this is to let water out.
ADJUSTING THE STANDING WAVE RATIO (SWR)
Refer to Figure 4. The dimensions given are approximate and should be used as a starting point. * The gamma
match has 2 adjustments. First is the capacitor adjust and second is the slider adjust. Connect a SWR bridge coax
between your transmitter and the antenna and check the SWR. If adjustment is required, loosen the clamp on the
gamma match and the screws holding the slider (gamma straps (ZO2P)). Next move the capacitor adjustment first
one direction, then the other until a minimum SWR reading is obtained. If SWR is not yet satisfactory, move the
slider out 2” away from the boom. Ifthe reading has gone up move the slider back to the original position and then
2” towards the boom. Now readjust the capacitor for minimum SWR. You should now be able to determine which
direction to move the slider. Repeat the above procedure moving the slider in smaller increments until a satisfactory
SWR is obtained. Tighten all hardware. Disconnect the SWR bridge and reconnect your coaxial cable.
NOTE!
When assembling for vertical use, set antenna on a pole about 8 to 9 feet above the ground horizontally and
adjust SWR to 1.7. When you turn the antenna vertical and mount it on the tower, etc., the SWR will drop to 1.4
to 1.5. This is good; QUIT! Antenna results best if vertical antenna clears the top of the tower.
9
M107C

Installing and rigging towers, masts and antennas require specialized skills and experience. Information
supplied by MACO assumes that all products will be installed by personnel having these skills and have installed
similar products before. No one should attempt to install towers or masts without these knowledgeable skills.
MACO assumes no liability if faulty or dangerous installation practices are used. There are available, trained
and experienced personnel to assist in installation, maintenance, or dissassembly. Contact your local installer if
consultation or assistance is required.
All tower and antenna installations should be throughly inspected at least twice a year by qualified,
experienced, and trained personnel to insure proper performance and safety standards.
An additional warning precaution is given to be careful of surrounding high voltage power wires and other
electrical hazards duing installtion of your tower, rotor, or antenna.
MACO Antennas is a Division of Charles Electronics, LLC
www.macoantennas.net
[phone]
Do not erect a tower, rotor, or antenna during an electrical
storm, rainstorm, or when lightning is a possibility.