Ramsey Electronics manual PA1 Amplifier

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PA1 AMPLIFIER

All of us at Ramsey say THANKS for your interest in building the world's most popular 2 Meter amplifier project. Successful construction and installation of your PA1 amplifier can give your handheld 2 Meter transceiver an RF power boost beyond the performance of many fixed and mobile units.

BEFORE you begin building your PA1, we ask you to read the warranty information on page 14 and think about a few details in advance:

The PA1 is a true "Ham Radio" kit project which presumes the expertise that goes along with your license. You need to know how to "tack solder", wind simple VHF coils per our directions, and how to finish your PA1 with suitable enclosure, connectors, T-R switching and I/O wiring.

The Ramsey RFS1 RF-sensing T-R switch kit is available as an easy companion kit for the PA1.

The Ramsey PR10 Low Noise Pre-amplifier Kit can be worked into your final T-R installation to boost those hard-to-copy signals.

We ask you to understand that the VHF Power Transistor that is the heart and soul of this circuit cannot be guaranteed beyond careful tests by BOTH the manufacturer and our technicians. Because this expensive transistor can be damaged by either incorrect soldering OR incorrect physical mounting, there can be NO warranty on this part unless your own additional test BEFORE ANY soldering and mounting shows a clear defect.

Use of a VHF power output wattmeter is essential to correct adjustment of the PA1.

If you decide, before beginning any assembly of your PA1 kit, that this project is not quite what you're ready for, you may return the complete, unassembled PA1 kit to the Ramsey factory.

OR, if you are ready to join the thousands of hams world-wide who enjoy the PA1 as the most economical possible HT improvement for the highly-popular 2 Meter band, we will be happy to guide you through every construction step in the spirit of the "Learn-As-You-Build" philosophy for all Ramsey Kit manuals for the new millenium.

PA-1 • 4

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Contents Meter RF Power Amplifier KIT Partial List of Available Kits Ramsey Transmitter Kits KIT Assembly PA1 Amplifier PA1 Parts List KIT Building TipsAssembly Directions PA1 Parts Layout DiagramPA-1 L2 top L3 side view Final PC Board Wiring Before Testing Initial Testing Troubleshooting HintsTRANSMIT-RECEIVE T-R Switching Considerations Installation Notes Customizing Your PA1 InstallationOperating Notes Conversion Steps PA1 Warranty Notice PA1 2 Meter RF Power Amplifier Required ToolsAdditional Suggested Items Ramsey ELECTRONICS, INC