Upgraded MLA30 Plus Loop Antenna 0.5-30MHz - Compact Active Receiver

In this review the Upgraded MLA30 Plus Loop Antenna is evaluated as an affordable, compact receiving solution for shortwave listeners and amateur radio hobbyists. The bottom line: it is best for users who need a small, easy-to-install active loop that improves signal-to-noise ratio across 0.5MHz to 30MHz without running long wires. The reviewer found the built-in low noise amplifier, USB 5V power feed, and strong directionality to be the single biggest reasons to consider it for balcony or rooftop installation.

Key Features

• Frequency range: Covers 0.5MHz to 30MHz so it handles medium-wave and most shortwave bands useful to SWL and HAM listeners.
• Active loop with amplifier: The built-in low noise amplifier improves weak-signal reception and helps dig out stations lost in local noise.
• Directional nulling: Excellent directivity lets users rotate the loop to align the virtual antenna point with interference and reduce local noise.
• Compact installation: Lightweight plastic construction and compact size allow mounting on balconies, rooftops, or other limited spaces where long-wire antennas are impractical.
• USB 5V power: Runs from a standard 5V USB power supply, power bank, or mobile charger for easy, low-voltage operation without special power hardware.
• Noise suppression: Significant suppression of local radiated noise versus long-line antennas, which can improve signal clarity in noisy environments.

Who It's For

The MLA30 Plus is aimed at short-wave listeners and amateur radio enthusiasts who need a compact, active receiving antenna that improves reception in limited living areas. It is particularly well suited to apartment users, balcony installs, and anyone wanting a tidy rooftop option that beats a telescopic whip on HF bands.

Those who transmit frequently, need multi-band tuned transmitting performance, or require weatherproof permanent installations for continuous outdoor exposure should look elsewhere, since this unit is explicitly a receiving antenna with a preamplifier that can be damaged if connected to a transmitter.

Pros & Cons

Pros

• Noticeable improvement in reception and SNR on many shortwave bands compared with simple telescopic antennas.
• Compact, easy to assemble and mount on balcony rails or rooftops without large space requirements.
• USB 5V power makes setup simple using a power bank or common charger.
• Directional behavior allows nulling of local interference for clearer signals.

Cons

• Designed only for receiving; connecting a transmitter will damage the preamplifier, so it is not suitable for transmitting use.
• Plastic construction and compact size may not match the robustness or range of large outdoor receiving arrays for extreme DX use.

Specifications

Type	Active Loop Antenna
Model	MLA-30 plus
Frequency Range	0.5MHz to 30MHz
Power	5V USB power supply (power bank or mobile charger)
Material	Plastic
Color	White
Ports	BNC and SMA receive ports

Our Verdict

The MLA30 Plus offers strong value for shortwave listeners and entry-level HAM operators who need a compact, directional receiving antenna that reduces local noise and improves reception. Its USB power convenience and easy mounting make it a practical choice for limited-space installs, but it should not be used for transmitting and is not a substitute for large outdoor arrays where maximum range is required.

Frequently Asked Questions

Can I use this antenna with my transmitter?
Do not connect to a transmitter; the preamplifier will be damaged and the unit is designed strictly for receiving.

How is the unit powered?
The antenna uses a 5V USB power supply and can be run from a power bank or mobile charger.

Will it reduce local noise?
Yes, the loop's directionality and amplifier help suppress local radiated noise compared with long-line antennas, improving SNR for many weak signals.