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40M4L SPECIFICATIONS:
Model Number .....................40M4L
Frequency Range ................7.0 to 7.3 MHz
Gain over dipole ...................6.2 dBd
Front to back ........................22 dB
Front to side .........................30 to 45 dB by ht.
Beamwidth in Az ..................60 degrees
Feed Imp. / Conn type .........50 Ohms/ SO-239
VSWR 1.2:1 typ. 2:1 max.
Power Handling ....................3 kw or specify
Boom Length / dia. ...............42' 2" / 3 X .125 wall
Element length .....................46 ft. all
Element diameter .................1-1/2, 1-1/4, 1, & 3/4"
Turning radius ......................31.5 ft.
Mast Size .............................2 in. nom. or specify
Wind Area / Survival ............13 sq. ft. / 100 mph
Weight 115 lbs
Shipping Wt. / method .........128 lbs. / Truck or Air
FEATURES
The Dual-Driven Linear-loaded 40M4L combines decades of hands-on HF experience and
listening to customers' needs with the latest techniques in computer optimized design and
construction. It is new from the ground up! The result is an antenna head and shoulders above the
competition in strength, durability, and performance...a package designed to give you years of
enjoyment on the 40 meter band.
Mechanically, all the elements have sleeved butts for additional strength and are clamped
between massive CNC machined aluminum (6061-T6) element mounting plates which WILL defy
Mother Nature! The Driven elements are split and insulated with a 1-1/4" dia. solid fiberglass rod and
fed with a weather sealed coaxial 1:1 balun rated for 3 kw. All hardware, except U-bolts, is stainless
steel.
The Linear loaded elements are 3/16 inch aluminum rod (6061-T6), elevated slightly at boom
center to reduce inductive cancellation (requiring LESS loading), reduce mechanical stress, and
minimize element droop. In the air, the antenna is easily mistaken for a 15 or 20 meter Yagi!
Believe it...This is not just another 40 meter yagi!!
7560 N. Del Mar Ave, Fresno CA 93711 (209) 432-8873 FAX (209) 432-3059