DX Engineering RPA-1 HF Manual page 2

Table of Contents
Installation
Determining Sensitivity
Introduction
Features
Additional Requirements
Specifications
Connecting the Power Supply
Introduction
The DXE-RPA-1 is optimized for 0.3-35 MHz operating range. The push-pull amplifier design and
robust components enable it to withstand high signal levels and operate when you need it most. The
dynamic range of the DXE-RPA-1 is better than most receivers.
The DXE-RPA-1 metal housing provides shielding and improved lifespan. The unit uses parallel
RCA type phono jacks and CATV F connectors for the input and output connections, and a relay
that automatically bypasses the preamplifier when dc power is removed. You may use cables with
either RCA or F connectors on both input and output.
The DXE-RPA-1 is a high performance broadband LF and HF receiver preamplifier that features
exceptional immunity to overload. It also has a low input SWR, and an excellent noise figure. The
amplifier is constructed of quality components mounted on a sturdy, G-10 fiberglass circuit board.
The circuit board mounts in an aluminum enclosure best suited for indoor use. RF connectors are
RCA phono and F type CATV fittings. Performance is optimized for 350 kHz to 35 MHz, where
dynamic range and third order intercept are typically more than 20 dB (one hundred times) better
than conventional preamplifiers.
Features

Push-pull operation eliminates harmonic distortion

High quiescent current increases ability to handle strong signals without distortion or
overload

Meticulous craftsmanship and durable components provide superior dynamic range

RCA type phono jacks and type F connectors ease installation

Simplified switching - automatic bypass eliminates gain when dc power is off

12-18 Vdc power using power connector or through the coax

12-18 Vdc through coax enables remote operation at antenna
Additional Requirements
Please note you will need to consider the following requirements (parts not included in this
package) to install and operate the DXE-RPA-1 HF Preamplifier:
The DXE-RPA-1 requires a well-filtered, negative ground, 12-18 Vdc @130 mA power source.
Depending on the supply current, you might also need an inline fuse. Powering the DXE-RPA-1
through the coax feedline requires a voltage injector circuit (not included) and an internal connection
change.
4 Powering Through the Coaxial Cable
5 Reducing Gain
2 Maintenance
3 Lightning
3 Optional Items
3 Technical Support and Warranty
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