Diamond Antenna SG-M911 User manual

Specifications
FREQUENCY: 6m: 52-54 MHz, 2m: 144-148 MHz, 70cm: 440-450 MHz
GAIN : 6m: 2.15 dBi, 2m: 2.15 dBi, 70cm: 5.5 dBi
POWER : 60 Watts
ELEMENT PHASING : 6m: 1/4λ, 2m: 1/2λ, 70cm: 2 5/8λ
IMPEDANCE : 50 Ohms (nominal)
VSWR : 1.5:1 (nominal)
LENGTH : 41”
WEIGHT : .3 lbs.
MOUNT : UHF Male
WARRANTY : 1 year against defects in material or workmanship.
Recommended Mounts: K400C, K400S, K412C, K412S, K600M and K600S.
Antenna Assembly
THE SG-M911 REQUIRES PEOPER VEHICLE GROUND. MOUNTING LOCATION WILL AFFECT VSWR.
NOT RECOMMENDED FOR MAGNET MOUNTS.
1. Remove antenna from package and inspect contents to insure it is complete.
2. Choose desired mounting location to insure proper vehicle grounding, maximum strength of mount, and best
performance of antenna.
3. Install antenna on vehicle. Use quality meter to check VSWR. The SG-M911 is pre-tuned and only minor adjustment
may be required for best VSWR. Minor tuning can be achieved by loosening setscrews at fold-over and adjusting
lower element.
4. Tighten setscrews. Recommend using removable Loctite Threadlocker #242 or similar product to insure proper
fastening of setscrews.
Foldover Hinge Assembly
Lift upper half of foldover hinge vertically out of its conical socket, avoiding the use of the sockets’ edge as a
fulcrum. Position hinge to permit foldover in desired direction. Care should be taken when folding over, not to damage
vehicle or antenna. Do not drive with antenna in folded position.
SG-M911
6m/2m/70cm Tri-Band Mobile Antenna
DIAMOND ANTENNA Products are distributed by RF PARTS COMPANY
435 S. Pacific Street ¥ San Marcos, CA 92078 ¥ [phone]
www.diamondantenna.net

Assembly Diagram Foldover Diagram
VSWR (nominal)
WARNING!
PLEASE READ BEFORE INSTALLATION
MOBILEANTENNA: For ease of installation, DIAMOND ANTENNA MOBILE MOUNTS are strongly recommended. In
some cases, mobile mounts of different manufacturers’may not interface well with DIAMONDAntennas. DIAMOND Mobile
antennas are pre-tuned to give best possible performance on the band(s) for which they are designed. In some installations,
minor VSWR adjustment may be made by moving the antenna up/down at the base end. Two set screws at the foldover hinge
allow for adjustment.
LARGE GVWTRUCKAND OFF ROADVEHICLES: Due to the excessive vehicle vibration, antennas exceeding 45” are
not recommended. In any event, antennas damaged by excessive vibration are not covered by warranty. Any
tampering, cutting or attempted adjustment of this antenna beyond our recommendations may void all warranty. If you have
any questions, please call Diamond Customer Service Dept. at [phone].
metric 1.5mm
allen wrench
#091101
upper whip element
set screws M4X3
#091102
lower whip element
set screws M4X3
#091103
foldover hinge
#091104
matching section