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Summary of Contents for eb104 EB500
- Page 1 User's manual Transistor linear VHF power amplifier 500 W Model EB500...
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Page 2: Table Of Contents
Contents Introduction ………………………………………………..3 Precautions for use with the EB500 ……………………3 Functional features of the EB500 amplifier ……………4 Characteristics of the EB500 amplifier ......4 Front Panel Description ………………………………….6 Description of the rear panel …………………………..6 Connecting the control cable ……………………………7 EB500 Power Amplifier Protection Circuits ....7 Application …………………………………………………9... -
Page 3: Introduction
This will allow you to reduce the risk of failure of this product. EB500 is a transistor linear VHF power amplifier designed for use with amateur radio stations. Distinctive features of the EB500 amplifier: –... -
Page 4: Functional Features Of The Eb500 Amplifier
Functional Features of the EB500 Amplifier The built-in potentiometers in the protection circuit and the BIAS voltage control circuit are set to the correct position during setup and testing of the equipment. Any change in the position of these potentiometers will result in the need to reconfigure the amplifier using accurate measuring instruments. -
Page 5: Front Panel Description
Front Panel Description 1. Key switch on and off the power amplifier. 2. Digital power indicator and SWR. 3. Green LED - indicates transmission mode. 4. Over current protection indicator 5. Protection indicator for excess SWR 6. Protection indicator for exceeding the maximum permissible output power Turn the amplifier off and on again to reset the protection circuit. - Page 6 Back panel description OUT - RF connector for connecting the antenna. CONTROL - connector for PTT signal. IN - connector for connecting a coaxial cable from the transceiver. 53V - connector for connecting a 30-53V power supply. Control cable connection: 15 pin - PTT, connection to the housing enables transmission mode 22-25 pin - GND, common wire.
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Page 7: Eb500 Power Amplifier Protection Circuits
EB500 Power Amplifier Protection Circuits 1. Overheat protection. If the temperature of the transistor case exceeds + 70 ° C, the bimetallic thermal switch located on the transistor case will be triggered and transmission becomes impossible, until it cools down to + 65 ° C. -
Page 8: Application
Application...
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