Base Station Antenna
Diamond base station antennas are pre-tuned to give best
performance on the band(s) for which they are designed, and
no further adjustment should be attempted.
Exception: CP62 & V2000A require 6m tuning. CP725H, CP5H, CP6, CP6A, CP6AR & CP610
have tuning instructions included.
Base Antennas having Type-N Connector
Care should be taken to avoid damage of the center pin of
antennas having "TYPE-N" base connector. Attempted
connection of a PL-259 (UHF) or improperly assembled "N"
cable connector can damage the antenna connector. Damage to
the antenna connector is not covered by warranty.
For ease of installation, Diamond Antenna Mobile Mounts are
strongly recommended. In some cases, mobile mounts of
different manufacture may not interface well with Diamond
Antennas. 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 base allow for adjustment. Do not cut the antenna rods.
Use of magnet mounts is not recommended with tall antennas,
i.e SG7900A, SG7900ANMO, CR627B, CR627BNMO & HV7A, NR22L, NR7900A. Excessive VSWR may
occur with the following antennas if used on a magnet mount:
CR320A, CR320BNMO, NR72BNMO, SG7000A, CR8900A, M685S-M685SNMO, HV7A, HF6FX, HF50CX, CR627B, and CR627BNMO, AZ504SP, AZ504FXH.
Large GVW Truck and Off-Road Vehicles
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 the antenna beyond our recommendations may void all warranty.
If you have any questions, please call Diamond Customer Service
Dept. at (770) 614-7443.