
XM - 10, 15 & 20 Meter 5 Element Yagis. Cushcraft announces new 5
element Monobanders for 10, 15 & 20 meters. Each XM model has Big Thunder
hardware and high wind ratings. Phillystran boom trusses are used on the 20
meter model. The feed systems are 50 ohm direct feed - dual driven elements.
VSWR is flat across the band. A high power 1:1 balun is included. Big Thunder
Monobanders were Beta tested at three extreme bad weather sites for the winter
1997/1998 season. They have excellent patterns and are perfect for stacks.
Outstanding performance thanks to Cushcraft’s unmatched
multiband design technology and experience.
Rugged stainless steel mounting hardware is easy to install
and maintain.
XM240 - 40 Meter 2 Element Yagi. The famous 402CD two
element 40 meter beam is now redesigned as the XM240. It features
the same contest winning performance with a 90+ mph wind rating.
A 2-1/2” OD boom and Big Thunder style 3/16" thick extruded element
and boom plates are used to eliminate mechanical failures. A Phillystran
boom truss and 1:1 high power balun are included.
Big Thunder Monobanders
Element Hardware
Boom-to-Mast
COMMUNICATIONS ANTENNAS
Page 7
MULTIBAND DIRECTIONAL YAGI
A627013S 6 Meter/2Meter/70 CM
Cushcraft’s newest multiband directional yagi is designed to
provide hobbyists who have limited tower or mast space with
directional antenna performance on three of the most popular
bands. The A627013S combines 6 meters, 2 meters and 70
centimeters on one boom. Since the three antennas were
designed to share a common boom, the A627013S solves the
often encountered problem of degraded antenna performance
due to inadequate spacing when using separates.
MODEL
A627013S
Frequency, MHz
50-54
144-148
430-450
No. Elements
3
5
Forward Gain, dBi
8
10
Front to Back Ratio, dB
20
18
SWR 1.2:1 Typical
2:1 Bandwidth, MHz
>1
>4
>10
Power Rating, Watts PEP
1000
350
3dB Beamwidth, Degrees
E Plane
48.5
H Plane
60
Boom Length, ft (m)
8.66 (2.66)
Longest Element, in (cm)
117 (300)
Turning Radius, ft (m)
6.16 (1.87)
Mast Size Range, in (cm)
1.25-2 (3.2-5.1)
Wind Load, ft2 (m2)
2.52 (0.23)
Weight, lb (kg)
9.5 (4.3)
6/2 Meter,70 CM,
XM510
A627013S
MODEL
XM240
XM520
XM515
XM510
Frequency, MHz
7.0 - 7.3
14.0 - 14.35
21.0 - 21.45
28.0 - 29.7
Number Elements
2
5
Forward Gain Free Space, dBi
6.0
9.3
Fwd Gain @ 1 Wavelength Ht,
dBi @ 14 deg
12.5
14.4
Front to Back Ratio, dB
20-25
20-30
VSWR Typical Minimum
1.1:1
VSWR 1.5:1 Bandwidth, KHz
150
> 350
> 450
> 750
Power Rating, Watts Output
1500
3dB Beamwidth, Degrees
70
52
Side Lobe Attenuation, dB
>35
>40
Boom Length, feet (m)
22 (6.7)
35 (10.7)
24 (7.3)
19 (5.8)
Boom Diameter, inches (cm)
2.5 (6.3)
Longest Element, feet (m)
43 (13.1)
36.3 (11.1)
24 (7.3)
18 (5.5)
Turning Radius, feet (m)
24.3 (7.4)
25.9 (7.9)
16.3 (5.0)
13.8 (4.2)
Max Mast Size, inches (cm)
2.5 (6.35)
Wind Surface Area, sq ft (sq m)
5.5 (.51)
9.2 (.85)
4.5 (.41)
3.4 (.32)
Wind Load @ 80 mph, lbs (kg)
142 (64.4)
250 (113.4)
115 (52.3)
78 (35.5)
Weight, lbs (kg)
55 (25)
92 (41.8)
47 (21.1)
38 (17.2)