VHF AMP-2 30 W POWER AMPLIFIER INSTRUCTION MANUAL 136 - 174 MHZ Covers Models: AMP-2/145-30-00 AMP-2/155-30-00 AMP-2/170-30-00 Copyright © 2004 Daniels Electronics Ltd. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written consent of Daniels Electronics Ltd. DE™ is a registered trademark of Daniels Electronic Ltd.
ii DOCUMENT CONTROL This document has been produced, verified and controlled in accordance with Daniels Electronics’ Quality Management System requirements. Please report any errors or problems to Daniels Electronics’ Customer Service Department. DOCUMENT REVISION DEFINITION Daniels Electonics Ltd. utilizes a three-level revision system. This system enables Daniels to identify the significance of a revision.
iii RF Exposure Warning Exposure to radio frequency (RF) energy has been identified as a potential environmental factor that must be considered before a radio transmitter can be authorized or licensed. The FCC has therefore developed maximum permissible exposure (MPE) limits for field strength and power density, listed in FCC 47 CFR § 1.1310.
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v Contents General Information ............................................................... 1 Introduction ................................................................................................ 1 Performance Specifications ....................................................................... 2 Physical Specifications .............................................................................. 3 Theory of Operation ............................................................... 5 General ...
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1 GENERAL INFORMATION IN TR OD U C TION The MT-3 / MT-4 repeater system is a VHF / UHF radio system which is characterized by high performance and reliability under the most severe environmental conditions. The total system is designed to provide dependable, low maintenance performance, even in the most difficult circumstances. The MT-3 / MT-4 series of modules are packaged in the compact Euro standard (5”h x 2.8”w x 7.5”d) housing, and are robustly designed for urban, remote or transportable applications.
2 General Information P E R F O R M A N C E S P E C I F I C AT I O N S Type: MT-2 Series Power Amplifier Family: AMP-2/150 Models: AMP-2/145-30-00 AMP-2/155-30-00 AMP-2/170-30-00 Compatibility: MT-3 and MT-4 Series Transmitter Exciters Frequency Range: 136 - 174 MHz Frequency Bands: 136 - 150 MHz 150 - 162 MHz 162 - 170 MHz RF Input Power: 2-4W RF Output Power: Adjustable: 20 - 30 Watts (set by MT-3 or MT-4 exciter) Output Impedance: 50 Ω Conducted Spurious & Harmonics: < -80 dBc (at 30
General Information P H Y SICAL SPECIFICAT ION S Physical Dimensions: Width: 14.2 cm (5.6”) Height: 12.8 cm (5.05”) Depth: 20.5 cm (8.1”) Weight: 1.6 kg (3.5 lb) Operating Temperature Range: -40°C to +60°C Operating Humidity: Up to 95% R.H. at 25°C RF Connectors: Type N Standard Corrosion Prevention: Anodized aluminum construction. Stainless steel hardware.
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7 INSTALLATION AND SITE OPERATION The VHF AMP-2 RF power amplifier is approved for operation with the VT-3 or VT-4 exciter. Complete MT-3 subracks shipped directly from the factory are normally set to the appropriate options and O/P power calibration as requested by the customer. These units require no recalibration. For VHF AMP-2 RF power amplifiers shipped separately from the MT-3/MT-4 racks, install as outlined in this section.
8 Installation and Site Operation 1) Confirm exciter and PA are aligned for the same frequency. (See Alignment Procedure). 2) Remove the blank cover plates or TX-RX pair in the “B” System subrack slots. 3) Install the VHF AMP-2 in slot 36 (visible via the marker hole on the upper left VHF AMP2 front panel). Note: If the unit is set up with the extender card there will be a voltage drop of +1 to +1.5 VDC when the power amplifier is transmitting.
