BIG SIGNAL 18BS-270
The high-performance dual-band V-UHF directional antenna to take your station further

For operators looking to get the absolute most out of their VHF and UHF setup, the BIG SIGNAL 18BS-270 represents the next level in the lineup, sitting above its smaller sibling, the 10BS-270.

This model stays true to the BIG SIGNAL philosophy: combining two high-efficiency monoband antennas on a single optimized boom, minimizing band interaction while maximizing overall performance.

It features 6 full-wave elements on 144 MHz and 12 full-wave elements on 432 MHz, delivering higher gain and sharper directivity—ideal for both terrestrial DX and satellite operations.

Why choose the BIG SIGNAL 18BS-270?

• Full-wave elements = Maximum efficiency
Better real-world performance, improved radiation pattern, and higher effective gain on both bands.

• High directivity and gain
Greater signal control, improved front-to-back ratio, and enhanced ability to work weak signals.

• Clean, low-noise reception
The loop design reduces interference and improves clarity, even in challenging RF environments.

• Polarization stability
More reliable QSOs, reduced losses, and better performance for satellite communications.

• Optimized and practical design
A balanced combination of size, weight, and performance, with fast, tool-free assembly.

Why a Quad antenna instead of a Yagi?

• Higher efficiency
Full-wave loop elements outperform traditional half-wave dipoles used in Yagis.

• Lower noise pickup
Closed-loop design helps reject urban and electrical noise.

• Better polarization stability
Handles polarization variations more effectively, reducing signal loss.

• Cleaner radiation pattern
Fewer side and rear lobes for improved selectivity and less unwanted interference.

• Superior performance in a compact footprint
Excellent size-to-performance ratio, especially in high-performance compact setups.

BIG SIGNAL – The next level in V-UHF
For those who already know what a great antenna can do… and want more.