DSEFO222-22 Rev 2/21
Directive Systems & Engineering
2702 Rodgers Terrace
Haymarket, VA 20169-1628
www.directivesystems.com
703-754-3876
22 Element 3.9 wl. K1FO Designed Yagi, Model DSEFO222-22 (w/boom sag)
D1
D8
D9
D15
D16
D20
D11
D12
D17
D5
D6
TRUSS BOOM CLAMP
BRACKET
TRUSS BOOM CLAMP
BRACKET
28'-3/4"
BOOM TO MAST PLATE
LOCATION
ELECTRICAL SPECIFICATIONS
Frequency range: MHz ......................
222-223
Gain: dBd........................................... 15.8
Impedance: Ohms.............................. 50
Connector type................................... Type N (F)
Front -to- back ratio: dB...................... 22
SWR: Typical at resonance................ 1.12:1
Beamwidth 3dB: degrees
E- Plane ................................. 23º
H- Plane ................................. 24º
Sidelobe level: decibels
1
st
E- Plane ............................ -17.5
1
st
H- Plane ............................ -15.5
Power rating, Continuous: Watts ...... 1500
Stacking Distance: ft.(m)
E- Plane..................................
11’ (3.353)
H- Plane................................. 10
’4” (3.150)
MECHANICAL SPECIFICATIONS
Boom length: in. (m.)........................... 28
’ 3/4” (8.553)
Turning radius: in. (m.)........................ 17
’ (5.182)
Weight Assembled: Lbs (kg.).............. 13 (5.90)
Max mast size: in. (cm.)....................... 2
” (5.08)
Wind surface area: sqft (m. ) .............. 3 (.279)
Wind Survival: Mph (km/hr)................. 90+ (150)
BEFORE INSTALLING YOUR NEW ANTENNA, PLEASE BE SURE
TO READ THE ENCLOSED WARNING PAMPHLET.
