What bands is the OctaLoop2 best for?

The OctaLoop2 excels on 160 m, 80 m, and 40 m, but it covers 0.5–50 MHz for general HF and MW reception.

Does the OctaLoop2 need grounding?

Yes. Ground the coaxial braid at the mast base with the included RVS peg to minimize noise pickup.

Can the OctaLoop2 be used indoors?

Yes, but nulling and noise rejection are reduced compared to outdoor installations.

Do I need a rotor with the OctaLoop2?

No rotor is required, but rotating the loop allows you to null specific noise sources for better SNR.

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RF Guru

OctaLoop2 — A shielded active H-field Loop antenna — 500KHz – 30 MHz

€258,00 EUR

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Product variants

Quantity

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If you order coax cables together with connectors, we will crimp the connectors for free before shipping.

Disclaimer — All our products are handmade, and fulfilment times may vary depending on order volume. Please allow 2–3 weeks for your order to be completed and shipped.

Listen to our SDRs

Hear OctaLoop2 and our other antennas live on remote SDRs.

Included

OctaLoop2 Antenna (3.65 m circumference)
Stainless Steel (RVS316) Mounting Bracket
Bias-T 13.8 V F-Type to SMA
Short SMA to BNC Cable

Optional
RVS Ground Peg with F connector bulkhead and RX RF Line Isolator
10 m INTSAT-170-ELITE 75 Ω coaxial cable with F-type connectors

Product Description

The OctaLoop2 is a high-performance HF active shielded H-field magnetic loop antenna, engineered for exceptional low-noise reception. Its shielded loop and integrated common-mode rejection provide superior EMI suppression for SWL, DXing, and SDR use.

With an IIP3 of +41 dBm (push-pull design) the OctaLoop2 delivers excellent dynamic range. Covering 500 kHz – 50 MHz (optimized for 2–10 MHz), it’s ideal for MW, LF, and lower HF monitoring.

Placement Recommendations

Mount 1.2–5 m above ground for balance of SNR and signal strength
Keep well clear of buildings, power lines, and EMI sources
If feedline exceeds 10 m, add a CMR choke midway
Ground the coaxial braid at the mast base via an RVS peg

Deep Nulls for Noise Rejection

Deep nulls appear broadside to the loop plane
Highly effective at rejecting local noise sources (power lines, appliances)
Nulls strongest in MW and lower HF bands

Polarization & Take-Off Angle

Magnetic-field reception — less sensitive to local electrical noise
Polarization: predominantly magnetic coupling, less multipath distortion
Take-off angle: typically low-angle at LF/MF — excellent for groundwave and DX

Handling Different Signal Types

MW AM broadcast — excellent clarity
CW & SSB — high SNR
Weak DX — effective on 160/80/40 m
Utility signals — NAVTEX, time signals, propagation beacons

Frequency Range & Performance

Frequency Range	Performance Expectation
500 kHz – 2 MHz	Very Good for MW broadcast, NAVTEX, maritime comms
2 MHz – 10 MHz	Excellent for HF bands (160/80/40 m) and SWL
10 MHz – 30 MHz	Effective, but reduced null depth and efficiency

Performance by Band

Mid HF (2–10 MHz)

Peak performance range
Covers 160 m, 80 m, 40 m
Strong nulls for QRM rejection

Upper HF (10–30 MHz)

Efficiency drops gradually
Nulls less deep but still effective
Good for 20 m, 15 m, 10 m SWL and utilities

Technical Specifications

Parameter	Specification
Frequency Range	500 kHz – 50 MHz Optimized for 2–10 MHz. In this range, the OctaLoop2 provides its best null depth and lowest noise floor, making it especially effective for MW, 160 m, 80 m, and 40 m reception. Above 10 MHz, the antenna remains usable up to ~50 MHz, but overall efficiency decreases and the nulls become shallower. For higher HF bands (20 m–10 m), we recommend the OctaLoop Mini, which is specifically tuned and optimized for 1–30 MHz coverage with better balance on 40–10 m.
IIP3	+41 dBm
Impedance	75 Ω
Power Supply	13.8 V DC, ~180 mA
Polarization	Horizontal
Connection	F-Connector RF, SMA output
Antenna Size	1.2 m diameter, 3.65 m circumference
Weight	~1.2 kg
Temperature	-20 °C to +50 °C
Pole Mount	30–68 mm

Scope of Delivery

OctaLoop2 Antenna with enclosure and RVS316 mounting bracket
Bias-T power injector
10 m INTSAT-170-ELITE 75 Ω coaxial cable with F-type connectors
SMA-to-BNC adapter cable

Upgrade your HF reception with the OctaLoop2 — engineered for precision, built for performance.

Mini-FAQ

What bands is the OctaLoop2 best for? 160 m, 80 m, 40 m are the sweet spot, but coverage spans 0.5–50 MHz.
Does it need grounding? Yes, ground the braid at the mast base with an RVS peg for lowest noise.
Can it be used indoors? Yes, but null depth and noise rejection are reduced compared to outdoor placement.
Do I need a rotor? No, but rotation allows you to null specific noise sources. See our “Null” article for details.