Moonraker AMPRO-20T Mini Stick 20m 14MHz 250W

The Moonraker AMPRO-20T is a compact monoband HF mobile antenna from the Mini Stick range, designed for operation on the 20 metre / 14MHz amateur band.

This antenna is designed to provide HF operation with a more discreet and lower-height installation than a conventional HF mobile antenna. It uses a helical ground-dependent design, with a thin, lightweight body and low wind resistance.

With an approximate operating length of 100cm and the ability to dismantle/collapse to around 65cm, the AMPRO-20T is practical for transport, storage and use on vehicles or temporary installations.

The standard 3/8-24 connection allows use with compatible mobile mounts, suitable magnetic mounts, trunk lip mounts or other systems designed for HF antennas with 3/8 thread. The adjustable stainless-steel whip allows the antenna to be tuned for the lowest SWR within the desired part of the band.

With 250W PEP listed maximum power, 50W recommended limit on digital modes and approximately 150kHz bandwidth, this antenna is suitable for amateur radio operators looking for a compact solution for 20m mobile, portable, POTA, field or temporary operation.

As with compact HF mobile antennas, final performance depends heavily on installation, ground plane, ground connection, vehicle mounting position, coaxial cable, surrounding environment and correct tuning.

Main features

Compact HF mobile antenna
Manufacturer / brand: Moonraker
Model: AMPRO-20T
Series / type: HF Mini Stick
Band: 20 metres
Common frequency: 14MHz
Antenna type: helical / HF mobile whip
Construction: thin, lightweight and low wind resistance
Ground plane: required for best performance
Listed maximum power: 250W PEP
Maximum power on digital modes: 50W
Approximate operating length: 100cm
Approximate dismantled/collapsed length: 65cm
Bandwidth: 150kHz
Connection / thread: 3/8-24
Whip: adjustable stainless steel
Tuning: by whip adjustment for lowest SWR
SWR: 1.5:1 or better, depending on installation and tuning
Main application: HF mobile operation on the 20m band
Compatible with suitable 3/8-24 mounts
Suitable for compatible magnetic or trunk lip mounts
Requires SWR adjustment before transmission
Magnetic mount, bracket and coaxial cable not included unless otherwise stated

Recommended applications

HF mobile amateur radio
20 metre band operation
14MHz communication
Vehicle mobile installations
Portable and temporary operation
Field activities
POTA, portable and support communications
Compact HF stations
Use with compatible 3/8-24 mounts
Experiments with monoband HF mobile antennas
Applications requiring a low-profile HF antenna

Important note

Before use, always confirm the mount compatibility, 3/8-24 thread, permitted power, operating frequency, ground connection, ground plane, coaxial cable and SWR adjustment.

The Moonraker AMPRO-20T is a compact HF mobile antenna and its performance is highly installation-dependent. For best results, it should be mounted on a strong support, with a good ground connection and as clear as possible from nearby metal obstructions.

The 150kHz bandwidth means the antenna should be adjusted for the part of the band where it will be used most often. Before transmitting, always use an SWR meter or antenna analyser to protect the transceiver.

Transmission on amateur radio bands requires a valid licence and must comply with the regulations applicable in the country of use.