ALLMOPRAN 120

ALLMOPRAN 120 – Passive Allmode Receiving Antenna 20 kHz – 120 MHz

• Extremely wideband frequency range from 20 kHz to 120 MHz

• Compatible with different radiator types and sizes

• Inputs and output protected by fast 70V gas discharge arrestors

• Switchable input-side limiter (2 Vpp)

• Additional grounding terminal (M5) on the housing

• High-quality workmanship; splash-proof housing, all screw connections made of stainless steel

• Universal radiator set included: 2 × 7.5 m PVC-coated stainless steel wire rope

• Compact packaging = low shipping costs

• Universally configurable

The ALLMOPRAN 120 from NTi is an innovative passive receiving antenna for demanding applications and a true all-rounder.
It can be configured for connection with the following radiator types:

• Dipole (balanced) or End-fed (unbalanced)

• Loop (balanced or single-ended grounded)

The ALLMOPRAN can therefore be configured for either H-mode or E-mode operation. Switching is done via a toggle switch, provided that the corresponding type of radiator is connected.

The standard delivery includes a 2 × 7.5 m universal radiator set, allowing for a wide range of different radiator configurations.

By combining high-quality transformer materials with a wideband matching network, operation is also possible in the VLF range – typically a weak spot for passive antennas. As a passive system, no additional power supply is required.

The BNC connector socket is splash-proof and mounted in a durable, UV-stabilized polycarbonate housing with a transparent cover.

Flexible adaptation to the local interference environment

Electromagnetic waves consist of two different components in the near field:

• H or B (magnetic field strength vector)

• E (electric field strength vector)

The near field is defined as a maximum distance of one wavelength; beyond that, far-field conditions apply. While the two field strength vectors are 90° out of phase in the near field, they are no longer separated in the far field.

Since most sources of interference are found below 3 MHz, near-field conditions already apply at distances of less than 100 m.

In such cases, it can make sense to prefer or suppress the E- or H-component in the near field. Depending on local conditions and interference sources, one or the other field component may provide better reception results.

Want to test the ALLMOPRAN 120 live?

You can now conveniently test the ALLMOPRAN 120 live on the Internet via a WEB-SDR.
Simply click [this link], and you can explore the entire band from 20 kHz to 30 MHz.

The linked WEB 888-SDR with the ALLMOPRAN in End-Fed mode and a total length of 21 m is located in Alsace (France). Up to 4 users can access it simultaneously.

TECHNICAL DATA

• Optimal frequency range: 20 kHz – 120 MHz (–3 dB)

• Connector type & impedance: BNC / 50 Ohm

• Radiator connections: M5 thread (stainless steel)

• Output is DC-blocked (max. 50 V)

• Operating temperature range: –25°C to +45°C

• Size/weight: 105 × 105 × 50 mm / 0.2 kg

• Weather protection housing: splash-proof according to IPX2 (protected against dripping water at up to 15° tilt)

Scope of delivery:

• ALLMOPRAN 120 in splash-proof weather housing

• Universal radiator set 2 × 7.5 m PVC-coated stainless steel wire rope

Optional accessories:

• Mast mounting bracket

• Ground connection cable 155 mm, stainless steel wire rope, M5/M6

• Manual (latest version available for download)

FAQ

The FAQ for the ALLMOPRAN can be downloaded [here].