Ramsey ElectronicsメーカーQRP CW POWER AMPLIFIER KIT QAMP30の使用説明書/サービス説明書
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QAMP- 30 • 1 Ramsey Electronics Model No. Q A MP30 Need a little extra boost for yo ur QRP rig? Believe it or not, 20 watts is only about an ‘S’ unit below a 100 watt rig! This nifty little amp will add some “punch” to any QRP tra nsmitter.
QAMP- 30 • 2 RA M SEY T RA NSMIT TE R KIT S • FM100B Professi onal FM Ste reo Transmi tter • FM25B S ynthesized Stereo FM Transmitter • MR6 Model Rocket Tr acking Transmi tter • TV6 Tele vis.
QAMP- 30 • 3 Ramsey Publication No. MQAMP30 Price $5.00 TABLE OF CONTENTS Introduction to the QAMP30 ........... 4 How it works ........... .............. .......... 4 Parts list .............. ............. .......... .... 5 Tips and notes ........
QAMP- 30 • 4 IN TRO DU C TIO N The Ra msey QAMP ser ies of QRP power ampl ifiers are co mpact 1 0 to 20 watt RF amplifiers for QRP C W transmitters. These amplifiers are m ade to be driven by transmitters in the ½ to 2 w att ran ge.
QAMP- 30 • 5 PARTS LIST F O R THE Q AMP30 QRP POWER A MPLIFIER CAPA CITORS: 1 100 t o 220 µ f elect rolytic ca pacitor [ C1] 1 10 µ f elect r oly tic capaci tor [C2] 4 .
QAMP- 30 • 6 "THE RAMSE Y LEARN-AS-YOU-BUI LD ASSEMBLY STRATEG Y" Take a look at the parts layout diagra m. There is quite a lot to the construction of the QAMP30. It's easier than it seems once you get going, especially after you have installe d a fe w of the "land m ark" compo nents.
QAMP- 30 • 7 • If helpf ul, gently bend the pa rt’s wire lead s or tabs to hold it in place, with the body of the part snugly against the top side (component side) of the PC board. • Solder a ll wires or pi ns of the pa rt, whether t he 2 wires of a resistor or the 3 or 4 wires of a transistor.
QAMP- 30 • 8 16. Install diode D4, 1N40 02 style black epoxy diode. Check positioning of the banded end. 17. Install jumper JMP2. Use a piece of scrap com ponent lead wire bent into a "staple" shape and inserted into the board like a component.
QAMP- 30 • 9 These last four parts (R8, 9 and C11,12) form parasit ic suppression net works across each transistor to suppress any tendency for high frequency oscill ation in the pow er amplifier. 32. Install C3, anot her .1 µf disc ca pacitor (m arked .
QAMP-30 • 10 W e're al m ost finished. All w e need to do now is install a f ew remaining parts that have to be handmade - for that "old-w or ld craf tsmanship" touch ! W e'll prepare all those parts now f or f urt her assembly .
QAMP-30 • 11 amount of w ire cut fo r this task is the proper amount. If you have too little or too much, then you have not w ound th e core correctl y. Tin ea ch end with solder as before. Tin all the w a y up to the core body. Th is winding is the primary of transformer T2.
QAMP-30 • 12 47. Locate the smaller trans forme r (T2) and in stall it snugly on the PC board. 48. Install the larger tra nsformer (T1) into the indicated location on the PC board. 49. Install L1, a 15 turn to roid inductor wo und previ ously.
QAMP-30 • 13 3. Connect a dummy load t o J1, the amplifier RF output. In a pinch, a light bu lb ma y be us ed - see the section, "Ver ifying RF Po wer Output." 4. Temporarily insta ll a jumper f rom the collector o f Q3 to ground. 5.
QAMP-30 • 14 VE RI FYI NG TR ANS MI T TER RF OU TP U T The most important thing to know is whether yo ur transm itter is delivering some measurable and reassuring level of RF pow er. Th en you can continue on to adding the QRP amplifier and checking out the whole set-up.
QAMP-30 • 15 Amateur radio magaz ines and hand books provide a varie ty of circuits for RF wattm eters an d relati ve field -strength indicat ors, in cluding me thods of using your VOM as an indicating device.
QAMP-30 • 16 If you he ar an AC hum on the transmitted signal, usual causes are RF getting back into the power suppl y or a b ad VSW R on the antenn a. These short checks in no way de tail an y and all problems that can rear their ugly he ad, but should get you on the way to solving m ost errors.
QAMP-30 • 17 W hile we believe that th e R ams ey enclosure an d kno b option is a f ine value for finishing off y our Ramsey kit, we are happy to g ive you a coup le of additional suggestions and our reasons for them.
QAMP-30 • 18.
QAMP-30 • 19 Amateur radio magazines and handbooks provide a variety of circuits for RF wattmeters and rela tive field-strength indicato rs, including methods of using your VOM as an indicating device. CQ magazine for March 19 90 off ers an article by The Ramsey Kit Warranty Please read carefully BEFORE calling or writing in about your kit.
QAMP-30 • 20 Q AMP30 20 WATT LINEAR AMPLIFIER Quick Referen ce Page Guide Introduction to the QAMP-30 .......... 4 How it works .............. .......... ........... 4 Parts list ........... ............. ............. ..... 5 QAMP-30 assembly instructions .
デバイスRamsey Electronics QRP CW POWER AMPLIFIER KIT QAMP30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 QRP CW POWER AMPLIFIER KIT QAMP30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 QRP CW POWER AMPLIFIER KIT QAMP30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 QRP CW POWER AMPLIFIER KIT QAMP30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 QRP CW POWER AMPLIFIER KIT QAMP30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 QRP CW POWER AMPLIFIER KIT QAMP30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 QRP CW POWER AMPLIFIER KIT QAMP30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 QRP CW POWER AMPLIFIER KIT QAMP30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 QRP CW POWER AMPLIFIER KIT QAMP30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。
