Mirage BD-35 User Manual

MIRAGE BD-35 Dual Band Amplifier
1
MIRAGE BD-35
DUAL BAND POWER AMPLIFIER
INTRODUCTION:
The Mirage BD-35 is a 45/35 watt dual band power amplifier for use with
today's dual band handie talkies operating in the 144/440MHz bands. We
have succeeded in the development of a cross-band full duplex function and
have incorporated it into this design. The compact design of the power
amplifier unit employs the new "two band / one RF power transistor"
technique. The BD-35 is a
remarkable
and
useful
dual band power amplifier
for the
discriminating
Amateur Radio operator.
FEATURES:
•
High output power
Up to 45 watts at 144MHz or up to 35 watts at 440MHz. 30 to 35
watts is achieved with 2 to 6 watts input.
•
Input power from 0.3 to 7 watts
With an input power of 7 watts maximum, the Mirage is compatible
with most modern hand-held tranceivers.
•
Small size
This amplifier's size makes it the perfect companion for field operation
without the added weight.
•
Automatic Frequency selection and control circuit
This allows the amplifier to have only one input connector and makes
for a perfect match for today's dual band radios and dual band
antennas.
•
Reverse DC power polarity protection circuit
Protects the amplifier from accidental reversing of the power leads.
•
"ON-AIR" indicator
Lets you know that you are transmitting.

Mirage BD-35 Specifications

General

Brand	Mirage
Model	BD-35
Category	Amplifier
Language	English

Summary

Introduction to Mirage BD-35 Amplifier

Key Features of the BD-35 Amplifier

High Output Power Capabilities

Details the amplifier's output power at different frequencies, specifying input power required.

Wide Input Power Range

Specifies the compatible input power range, ensuring compatibility with most handheld transceivers.

Compact Size and Portability

Highlights the amplifier's small size, making it ideal for field operation without added weight.

Automatic Frequency Control

Allows a single input connector for seamless matching with dual band radios and antennas.

Reverse DC Polarity Protection

Protects the amplifier from damage due to accidental reversal of power leads.

On-Air Transmission Indicator

Provides a visual indication when the amplifier is actively transmitting.

Technical Specifications and Feature Explanations

Indicator Lamp Functions

Explains the purpose of the VHF ON AIR, UHF ON AIR, and POWER ON indicator lamps.

RF Connectors and Impedance

Details the ANT (RF OUTPUT) and RADIO (RF INPUT) connectors and the input/output impedance.

DC Power Input Requirements

Specifies the voltage range and connector details for the DC power input.

Installation and Operation Guidelines

Ventilation and Heat Warning

Advises on proper ventilation for the heat sink and warns that it becomes very hot with extended use.

Power Supply and Cabling

Provides guidance on DC power lead gauge, voltage limits, and vehicle starting precautions.

Antenna and Cable Requirements

Recommends cable quality, VSWR, antenna ratings, and warns against connecting rubber duck antennas directly.

Mono Band Antenna Considerations

Instructs on checking transmitting frequency and matching it to mono band antennas before operation.

Troubleshooting Common Issues

Connection and Cable Checks

Recommends checking antenna, power supply, and coaxial cable connections for looseness or faults.

VSWR and Power Output Verification

Suggests verifying antenna system VSWR and checking power output from the radio.

Fuse Rating Verification

Advises checking the fuse rating to ensure it is appropriate for the amplifier's operation.

Technical Assistance Information