Ramsey Electronics PA1 Instruction Manual

PA-1 • 1 2 METER RF POWER AMPLIFIER KIT Ramsey Electronics Model No. PA1 • Works with any radio; mobile, fixed or handheld • 8 to 10 ti

PA-1 • 10 make a suitable HEATSINK for Q1 and install it before proceeding. A piece of heavy aluminum or copper the same size as the PA1 circuit boar

PA-1 • 11 INITIAL TESTING Required for testing: • 1 to 5 watt 2 Meter transmitter or transceiver. • 12 volt DC power source, 5 amp minimum.

PA-1 • 12 TRANSMIT-RECEIVE ["T-R"] SWITCHING CONSIDERATIONS: T-R switching of a single antenna with a 2 Meter transceiver and the PA1 RF a

PA-1 • 13 CUSTOMIZING YOUR PA1 INSTALLATION: Since it's up to you to supply the enclosure, connectors and any desired operating conveniences,

PA-1 • 14 A NOTE FOR EXPERIENCED BUILDERS ON LINEAR OPERATION FOR SSB, AND OTHER EMISSION TYPES: Please undertake this conversion ONLY if you unders

PA-1 • 15 PA1 WARRANTY NOTICE: The PA1 kit is the only item in the entire Ramsey product line that is not covered under any warranty. Because of

PA-1 • 16 PA1 2 METER RF POWER AMPLIFIER Quick Reference Page Guide Kit Building Tips ... 5 Parts list ...

PA-1 • 2 PARTIAL LIST OF AVAILABLE KITS RAMSEY TRANSMITTER KITS • FM10, FM25B FM Stereo Transmitters • FM100 Super Pro FM Transmi

PA-1 • 3 2 METER RF POWER AMPLIFIER KIT Ramsey Publication No. PA1 Price $5.00 TABLE OF CONTENTS Kit Building Tips ...

PA-1 • 4 PA1 AMPLIFIER All of us at Ramsey say THANKS for your interest in building the world's most popular 2 Meter amplifier project. Succes

PA-1 • 5 KIT BUILDING TIPS Use a good soldering technique - let your soldering iron tip gently heat the traces to which you are soldering, heating b

PA-1 • 6 ASSEMBLY DIRECTIONS: ❒ 1. Simply EXAMINE the PA1 circuit board. Notice which way is up or down in accord with our published drawing. Notice

PA-1 • 7

PA-1 • 8 ❒ 5b. Tack-solder C1, one of the Mica compression trimmer capacitors, using enough heat for a solid, good connection. ❒ 6. Install C3, th

PA-1 • 9 ❒ 11a. Using the #18 enameled wire, wind a 5-turn coil for L3. The inside diameter is also 1/4", the turns should be close-wound, and