M2 Antenna Systems 215-470LP16 User manual

M2 Antenna Systems, Inc. 4402 N. Selland Ave. Fresno, CA 93722
Tel: [phone] Fax: [phone] Web: www.m2inc.com
©2015 M2 Antenna Systems Incorporated 09/23/15
Rev.00
Model .........................................215-470LP16
Frequency Range.......................215-470 MHz Cont.
*Gain ..........................................8.5 dBi Typical Average
Front to back ..............................27 dB Typical Average
Beamwidth..................................@230MHz E=61°/H=92°
Beamwidth..................................@350MHz E=58°/H=89°
Beamwidth..................................@450MHZ E=59°/H=90°
Feed Impedance........................50 Ohms Unbalanced
Maximum VSWR........................>1.5:1 AVG.
Mounting Polarity........................Horizontal or Vertical
Mast............................................1.5-2.0 Dia
Input Connector..........................“N” Female
Power Handling..........................250 Watts
Boom Length / Dia......................42” / 3/4” SQ
Turning Radius:..........................21”
Wind area / Survival...................0.8 Sq. Ft. / 125 MPH
Weight / Ship Wt.........................14 lbs. / 16 lbs.
M2 Antenna Systems, Inc.
Model No: 215-470LP16
FEATURES:
The 215-470LP16 is a dual boom log periodic with more elements than many conventional designs. The extra
elements help in lowering VSWR and produces higher gains across the working frequency range. The result is a high
quality commercial broad band VHF antenna. Built for extreme environmental conditions, this design uses 6061-t6 alumi-
num and all stainless hardware and UV stabilized acetyl insulation. Internal stainless screws secure the elements in
place. Optional models are available with welded elements for corrosive environments or extreme conditions. The 215-
470LP16 antenna can be ordered with many finishes, anodized, chem filmed, or a combination chem film and paint, with
many colors available.
SPECIFICATIONS:
*Subtract 2.14 from dBi for dBd

215-470LP16 DIMENSION SHEET

215-470LP16 HORIZONTAL MOUNTING
WITH HORIZONTAL
MOUNTING THE FEED
LINE CAN BE ATTACHED
TO THE LOWER BOOM
SECTION AND DOWN
THE MAST
WHEN ATTACHING
U-BOLT AND UNICRADLE
USE SIDE HOLES ON
MAST MOUNTING PLATE
HORIZONTAL MOUNTING
TO A VERTICAL MAST USING
THE SIDE MOUNT
OPTION
HORIZONTAL MOUNTING
TO A VERTICAL MAST USING
THE TOP MOUNT
OPTION
WHEN ATTACHING U-BOLTS
AND UNICRADLES
USE THE HOLES CENTERED
UNDER THE BOOM ON THE
MAST MOUNTING PLATE

215-470LP16 VERTICAL MOUNTING
NOTE THE POSITION OF THE
CONNECTOR MOUNTING
BRACKET, IT IS MOVED TO
THE REAR OF THE CABLE
ACCESS SLOT
WHEN CENTER MOUNTING ANTENNAS VERTICALLY POLARIZED IT
IS NESISARY TO MOUNT YOUR ANTENNAS ON A NON METALIC
MAST, AND FEED LINES NEED TO BE ROUTED OFF THE REAR OF
THE ANTENNA, BEHIND AND BELOW THE ELEMENTS AT LEAST 12”
FAILURE TO FOLLOW THIS PRACTICE CAN SEVELY DEGRADE THE
PERFORMANCE OF THE ANTENNA.
ATTACH THE FEED LINE
TO THE REAR BOOM
CABLE SUPPORT FOR
STRAN RELIEF OF THE
CABLE AND CONNECTOR.
NON METALLIC MAST

215-470LP16 ASSMBLY
1. Find the lower boom assembly with the cable access slot. Add the con-
nector mount bracket. Refer to the horizontal or vertical mounting options
pages to chose connector mount bracket location.
2. locate the Feedline RG-303 with connectors. Feed the SMA female con-
nector end of the cable inside the boom starting from the cable access
slot. Feed the cable thru past the front of the boom by 6”.

215-470LP16 ASSMBLY
3. Note the picture of the feed nose assembly, locate the grounded side of
the feed nose assembly. Warning The feed nose assembly when
unattached is fragile, after complete installation it will be very durable.
Care must be taken during the following steps.
4.Slide on the supplied 1/2 shrink tube onto the cable. Attach the feed
nose assembly to the end of the cable, slide the shrink tube over the mat-
ing SMA connectors and shrink.
GROUNDED
FEED NOSE

215-470LP16 ASSMBLY
5. Carefully slide the cable and feed nose assembly back into the boom
assembly, align the grounded side of the feed nose assembly with the
hole in the front of the boom assembly and add the 8-32 x 3/8 screw.
6. Add silicone sealant or equivalent around the feed nose and solder con-
nections as to seal for long term installation. Use appropriate topography
sealing techniques for long term installation.
5. Route the N connector thru the connector mount bracket, add lock
washer and nut and tighten.

215-470LP16 ASSMBLY
6. locate the front and rear delrin spreader bars. Add the both smaller front
spreader bars to either side of the boom assembly add the 8-32 screw
thru the boom and add the nut. Repeat for the rear end of the boom as-
sembly.
7. Find the upper boom section and attach to the open holes of the rear
spreader bars. Carefully bring the nose of the upper boom assembly clos-
er to the nose of the lower boom assembly, slide the center conductor side
of the feed nose assembly into the nose of the upper boom assembly and
add the 8-32 x 3/3 screw and tighten. Add the 8-32 screws to the front
spreader bars, add the nuts and tighten all the hardware.

215-470LP16 ASSMBLY
8. Locate the BTM side plate, BTM block and mast mount plate. See the
picture and assemble the BTM bracket. Add the u-bolts and
uni-cradles for your mounting style, horizontal or vertical polarity. Be sure
to tighten all hardware before installation. Always use good low loss coax
for feed line. Seal all exposed connectors with the appropriate sealing
techniques for your particular topography.
Screw, 8-32 x 1 3/4 ss
w/ lock nut
Screw, 8-32 x 1 1/2 ss
w/ lock nut
Screw, 1/4-20 x 1 3/4 ss
w/ lock nut
MAST MOUNT
PLATE
BTM SIDE
PLATE
BTM INSULATOR
PLATE

215-470LP16 PARTS & HARDWARE
DESCRIPTION...............................................................................QTY
BOOM ASSEMBLY W/ ELEMENTS, UPPER................................1
BOOM ASSEMBLY W/ ELEMENTS, LOWER...............................1
FEED NOSE ASSEMBLY ..............................................................1
FEED LINE, RG-303 W/ SMA FEMALE TO N FEMALE ...............1
CONNECTOR MOUNT BRACKET................................................1
REAR BOOM CABLE SUPPORT..................................................1
BTM SIDE PLATE..........................................................................2
BTM BLOCK...................................................................................1
MAST MOUNT PLATE...................................................................1
BTM INSULATOR PLATE2
FRONT SPREADER BAR, DELRIN2
REAR SPREADER BAR, DELRIN.................................................2
UNICRADLE, (M2AMC0076) .........................................................2
U-BOLT, 2” SS HINDLEY...............................................................2
PENETROX / ZINC PASTE CUP...................................................1
ASSEMBLY MANUAL....................................................................1
HARDWARE:
NUT,1/4-20 SS...............................................................................4
LOCKNUT, 1/4-20 SS ....................................................................2
LOCKWASHERS, 1/4 SS...............................................................4
BOLT,1/4-20X1/2,FH SCKT,SS .....................................................4
BOLT, 1/4-20X1-3/4” SS ................................................................2
SCREW, 8-32 X 1-3/4” SS .............................................................2
SCREW, 8-32 X 1-1/2 SS...............................................................6
SCREW, 8-32 X 1” SS....................................................................1
SCREW, 8-32 X 3/8” SS.................................................................4
LOCKWASER, #8 SS.....................................................................4
LOCKNUT, 8-32 SS .......................................................................9
CABLE TIE, 8” NYLON...................................................................4
SHRINK TUBE, 1/2 W/ SEALANT X 1 1/2”....................................1
ALLEN WRENCH, 5/32..................................................................1
M2ANTENNA SYSTEMS, INC.
4402 N. SELLAND AVE.
FRESNO, CA 93722
[phone] FAX: [phone]
www.m2inc.com Email: [email protected]