BIG SIGNAL SlimLoop
The ultimate antenna for those who demand performance in extremely limited space

At BIG SIGNAL, we understand that not every ham has the ideal space for large antenna installations. That’s why we created the BIG SIGNAL SlimLoop—a non-resonant (multiband) loop antenna fed with a tuner, redefining what’s possible when space is tight.

Innovative design. Performance where others fall short.

The BIG SIGNAL SlimLoop is more than just compact. It’s the result of a unique design developed to maximize performance in space-restricted installations—without giving up DX capability.

With a maximum width of just 3.4 meters (11.15 ft) at the top, it can be easily installed in virtually any space-limited QTH. Thanks to its closed-loop design, field testing has shown better performance and gain compared to basic antennas such as End-Fed (EFHW), random wires, or loaded verticals—while also delivering significantly lower noise and improved signal-to-noise ratio on receive.

IMPORTANT: Antenna tuner required

The SlimLoop requires an antenna tuner for operation across most bands from 40 to 6 meters.

Best performance is achieved between 20 and 6 meters, where the antenna operates very efficiently for DX and general operation. On 40 meters, performance remains acceptable considering its compact size, and can still deliver surprising results under favorable conditions.

In a typical installation, SWR ranges from 1.5:1 to 5,0:1, which is normal for a compact multiband antenna and easily matched with a tuner.

What makes the BIG SIGNAL SlimLoop unique?

· Only 3.4 m (11.15 ft) wide at the top: Ideal for extremely limited spaces
· Low radiation angle: Excellent for DX
· Low noise (QRM): Closed-loop design delivers quieter reception than typical verticals
· Rugged construction: High-quality aluminum, stainless steel, and UV-protected wire
· Wind rating up to 150 km/h (93 mph) and up to 1,000 W PEP power handling

Optimized performance in its class

While its compact design imposes certain physical limitations, the BIG SIGNAL SlimLoop offers an exceptional balance between size and performance.

Of course, if you have more space or are looking for maximum performance, we invite you to explore other models in our lineup, such as our cubical quads or full-wave Delta Loops.

The BIG SIGNAL SlimLoop is not just another antenna.
It’s the best solution when space is a challenge—but real performance still matters.

BIG SIGNAL SlimLoop. The performance you expect. The space you have.