Ramsey ElectronicsメーカーPA1の使用説明書/サービス説明書
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PA-1 • 1 2 METER RF POWER AMPLIFIER KIT Ramsey Electronics Model No. P A 1 • Work s with a ny ra dio; m obile , fixed or han dheld • 8 to 10 tim es the po wer gain: 10 watt s out for e very 1 wa.
PA-1 • 2 P ARTIAL LIST OF AVAIL ABLE KITS RA MSEY T RA NSMIT T ER KI TS • FM10, FM25B FM Ster eo Transmitter s • FM100 Super Pr o FM Transmi tter • MR6 Model Rocket Track ing Transmitter • A.
PA-1 • 3 2 METER RF POWER AMPLIFIER KIT Ramsey Publication N o. PA1 Price $5.00 TABLE OF CONTENTS Kit Building Tips ......................... ...... 5 Parts list ............. ................. ............. 5 Assembly .. ................. .........
PA-1 • 4 PA1 AMPLIFIER All of us at Ramse y say T HANKS for yo ur interest in building the world's most popular 2 Meter amplifier pr oject. Successful construction and installation of your PA1 amplifier can give your handheld 2 Meter transceiver an RF power boost b eyo nd the performance of many fixed and mobile units.
PA-1 • 5 KIT BUILDING TIPS Use a good soldering t echniqu e - let your solderin g iron ti p gentl y heat the traces to which you ar e solder ing, heatin g both wires and pads sim ultaneous ly. Apply the solder on the iron and the pad when the pad is hot enough to melt the solder.
PA-1 • 6 ASSEMBLY DIRECTIONS: ❒ 1. Simply EXAMINE the PA1 circuit board. Notice w hich way is up or down in accord with our published drawing. Notice that ALL components are surface-mounted (tack-solde red) to one side of the PC board. There are NO component- mounting holes! ❒ 2.
PA-1 • 7.
PA-1 • 8 ❒ 5b. Tack-solder C1, one of the Mica compression trimmer capacitors, using enough he at for a solid, go od connection . ❒ 6. Install C3, the other compression trimmer, j ust like C1. ❒ 7a. Bend the leads of C2, the round trimmer capacitor, at right angles so that it can also sit in a level and flat position.
PA-1 • 9 ❒ 11a. Using the #18 enameled wire , wind a 5-turn coil f or L3. The inside diameter is also 1/4", the turns s hou ld be close-wound, and the ends should be 1/4-inch long.
PA-1 • 10 make a suitable HEATSINK for Q1 and in stall it before proceeding. A piece of heavy aluminum or copper the sam e size as the PA1 circuit board will work fine. Even when securing Q1 to such a heatsink, do not use too much force. Observe the correct orientation o f Q1 on the actual circuit board when mountin g it to t he heatsink.
PA-1 • 11 INITIAL TESTING Required for testing: • 1 to 5 watt 2 Meter transmitter or transceiv er. • 12 volt DC power source, 5 amp minimum. • RF wattmeter suitable f or VHF use.
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 amplif ier may be accomplished in an y of these wa ys: • 1. Internal conn ections to you r transceiver, making use of its built-in T-R switching circuit or relay.
PA-1 • 13 CUSTOMIZING YOUR PA1 INSTA LLATION: Since it's up to you to supply the en closure, connectors and any desired operating conveniences, it's likely that each one of those thousands of PA1s in use today has its own personality.
PA-1 • 14 A NOTE FOR EXPERIENCED BUILDERS ON LINEAR OPERATION FOR SSB, AND OTHER EMISSION TYPES: Please undertake this conversion ONLY if you understa nd the theo ry and practice involved. Ot herwise, p lease get h elp from another ham e xperienced in amplifier design.
PA-1 • 15 PA1 WA RRANTY NOTICE: The PA1 k it is the only item in th e entire Ramsey product line that is not covered under any warra nty. Beca use of the variety of ways in which this kit can be constructed and mounted mechanically , we cannot offer any kit repair service.
PA-1 • 16 PA1 2 METE R RF POWER AMPLIF IER Quick Referenc e Page Guide Kit Building Tips ..................... ........... 5 Parts list .................... ................. ....... 5 Assembly ........ ............. ................. .... 6 Parts Layout Diagram .
デバイスRamsey Electronics PA1の購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
Ramsey Electronics PA1をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはRamsey Electronics PA1の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Ramsey Electronics PA1の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Ramsey Electronics PA1で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Ramsey Electronics PA1を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はRamsey Electronics PA1の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Ramsey Electronics PA1に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちRamsey Electronics PA1デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
