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XM240 Big Thunder Monoband
Cushcraft's XM240
monobander utilizes rugged Big Thunder hardware that combined with high
strength aluminum tubing affords the antenna outstanding wind
survivability. Phillystran boom trusses are used in the XM240 design for
extra boom stability. The feed system is a 50 ohm direct feed with dual
driven elements. VSWR is flat accross the band. A high power 1:1 balun
is included. The XM240 is field-proven for reliability and performance.
Excellent front to back ratio and gain makes the XM240 the right choice
for DX and for stacking as well.
| Model |
XM240 |
| 3dB
Beamwidth, Degrees |
70 |
| Boom
Diameter, in(cm) |
2.5(6.3) |
| Boom
Lenght ft.(m) |
22(6.7) |
| Forward
Gain, dBi |
6.0 |
| Frequency,
MHz |
7.0-7.3 |
| Front
to Back Ratio, dB |
20-25 |
| Longest
Element |
43ft(13.1m) |
| Mast
Dia in(cm) |
2.5(6.35) |
| No.
Elements |
2 |
| Power,
Watts output |
1500 |
| Sidelobe
Attenuation |
>35 |
| Turning
Radius |
24.3(7.4) |
| VSWR
1.5:1 Bandwidth, kHz |
150 |
| VSWR
minimum |
1.1:1 |
| Weight,
lb(kg) |
55(25) |
| Wind
Surface Area ft(m) sq |
5.5(.51) |
| Windload
@ 80 mph, lb (kg) |
142(64.4) |
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