S E C T I O N 1 G E N E R A L
D E S C R I P T I O N
General
The Hy-Gain Model DB-1015A is a three element, duo-bander that operates on 10 and
15 meters. Hy-Gain's Hy-Q traps allow multibanding. The antenna fits a 1
1/4
” – 2
1/2
”
O.D. mast and can be rotated with a heavy duty TV rotator.
Specifications
Electrical
Input impedance …………………………......................................................52 ohms
Gain …………………………………........................................................... 8 dB minimum
Front-to-back ratio ……………………………................................................... 20 - 25 dB
Maximum power input ……………………………………………………………….. 1 kW AM
VSWR (at resonance) ..........................…......................…………………………….. 1.2:1
Lightning protection .....................................……………………………............DC ground
Mechanical
Boomlength....………………………………………......................................................... 12'9"
Boom diameter .............……………………….…………..….............................…...........… 2”
Longest element ......……………………………........................................... 23' maximum
Maximum wind survival .........……..………………………......................................... 80 mph
Net weight……………………………................................................. 32
lbs. approximately
Accepts mast ....………………………...................................……………...............1
5/8
" O.D.
Wind surface area .....................…………………………………..............................3.8 sq. ft.
Wind load (80 mph) .........………………………………….........................................97.3 lbs.
Theory of Operation
Hy-Gain Hy-Q traps are air dielectric parallel resonant circuits which operate as
electronic switches. On 10 meters the "switch" is open so only the inner portions of the
e!ements are operative, giving a three element, 10-meter beam. On 15 meters the
“
switch" is closed and the entire element is operative, giving a three element, 15-meter
beam.
The exclusive beta match matches the antenna input impedance to 52-ohm coaxial
cable and puts the entire structure at DC ground for lightning protection.
S E C T I O N 1 1 AS S E M B L Y AN D
I N S T A L L A T I O N
WARNING
Avoid any accidental contact with power lines or any overhead obstructions by
ladders or lnstallatlon equipment. Failure to exercise care could result In serious
Injury.
