M2 Antenna Systems 6.9-4CDD-125, Руководство пользователя

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M2 Antenna Systems, Inc. 4402 N. Selland Ave. Fresno, CA 93722
Tel: (559) 432 - 8873 Fax: (559) 432 - 3059 Web: www.m2inc.com
©2018 M2 Antenna Systems Incorporated
9/28/20
REV 1
M2 Antenna Systems, Inc.
Model No: 6.9 - 4CDD - 125
SPECIFICATIONS:
*Subtract 2.14 from dBi for dBd / FS = Free Space
Model ......................................... 6.9 - 4CDD - 125
Frequency Range ....................... 6.8 – 6.980 MHz cont.
Typical gain ................................ 12.3 @ 100’ dBi typical
Front to back ratio ...................... 21 dB typical
Beamwidth ............................... 75°
Feed type / Balun ....................... SO - 239,1:4 Balun
Feed Impedance. ....................... 200 Ohms
VSWR ......................................... 1.2:1 typical, 2.0:1 max
Connector ................................... SO - 239, Other avl.
Power Handling .......................... 3 Kw, Higher avl.
Boom Length / Dia ...................... 42’ / 3” X .125
Maximum Element Length .......... 49’
Turning Radius: .......................... 34’
Mast Size .................................... 2” or 3” Nom.
Wind area / Survival ................... 13.0 Sq. Ft. / 100 MPH
Weight / Ship Wt. ........................ 450 Lbs. / 500 Lbs.
FEATURES:
Recently, M2 engineers developed a new way to make coils using CNC tooling. The result is a precision inductor
increasing Q and lowering loss to new levels. A coil loaded Yagi design was computer optimized, and not one single
change was required on the finished Yagi. This design gets the bandwidth and maintains performance across the band
like no other Yagi. Gain, Front to Back and VSWR are maintained nearly flat across the 6.8 to 6.980 MHz band section.
Mechanically it is easy to assemble. Only the tips of each element are different as all the coils are the same for each
element. The coils themselves float in air minimizing dielectric loss. They are fully covered with a polyethylene cover. This
antenna has been designed to meet your needs and give you years of reliability.