Ramsey ElectronicsメーカーAF1の使用説明書/サービス説明書
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AF1 • 1 E - Z CW AUDIO FIL TER Ramsey Electronics Model No. A F1 Here’s a quick and easy way to eliminate interfering C W signals! This filter uses a digital bandpass fi lter to knock out those unwanted signals.
AF1 • 2 RA MSEY TRA NSMIT TER KITS • FM100B Professional FM Stereo Transmitter • FM25B S yn t hesized Stereo FM Transmitter • MR6 Model Rocket Track ing Transmitter • TV6 Television Tra nsmi.
AF1 • 3 AF1 CW AUDIO FIL TER Ramsey Publication No . MAF1 Price $5.00 TABLE OF CONTENTS Introduction to the AF1 .................. 4 How it works ........ ................. ......... 5 Parts list ................. ................. ...... 6 AF1 Assembly instructions .
AF1 • 4 INTR ODU C TION Radio men know that the C W signal is the most reliable m ode of transm ission when opera ting on the ama teur radio bands. Ther e are, however, so m e inherent problems that exist in CW reception.
AF1 • 5 THEORY OF OPERATION Let’s have a look a t what m akes our audio filter so special. Have a look at the schematic diagram and follow along. First, havi ng a look at the po wer supply section of t he AF1 notice that diodes D3, 6, 7,and 8 form a full wave bridge re ctif ier.
AF1 • 6 AF 1 PART S LI ST Please check the boxes after the components have been identified, and now is a good time to “sort” the like components into groups or bins (an egg carton do es nicel y) to avoid using the wrong compone nt during a ssembl y.
AF1 • 7 MISCELLANEOUS PARTS 1 2.5mm power jack (J4) 2 PC mount RCA jacks (J1, 3) 3 DPDT pushbutton switch (S1, 2, 3) 1 1/4” stereo headphone jack (J2) 1 AF1 printed circuit board RAMSEY Learn-As-You-Build KIT ASSEMBLY There ar e numer ous solder connections on the AF 1 printed ci rcuit board .
AF1 • 8 Now, let's get building ! Since you may appreciate some “wa rm -up” soldering practice as well as a chance to put some “landm arks” on th e PC board, w e’ll f irst install some “hardware” components . This will also help us to get acquainted with the up - down, left - right orientation of the circuit board.
AF1 • 9 polarit y. See the par ts diag ram fo r proper pl acement. The capa citor should fit snugly down to the PC board. When installing the components be sure to save some of the longer clipped leads to use later as “jumper” wires. 12. Install C11, another 1000 uF electrol ytic capacitor.
AF1 • 10 23. Install R22 and R21, both 100 ohm [brown -bla ck-brown]. They are also mounted standing up. 24. Install stand up resistor R20, 1K ohm [brow n-b lack-red]. 25. Form and install diode D1, a 1N4148 type small signal diode [small glass case with black band].
AF1 • 11 AF 1 PART S LAY OUT DIA GRAM.
AF1 • 12 31. Using a scrap component lead, form and install JMP11. 32. Install C13, .1 uF disc [marked .1 or 1 04]. 33. Install C2, .001 uF disc capacitor [marked 102 or .001]. 34. Install R1, 47K ohm [yellow-violet-o range]. I’ll bet y ou didn’t forget to stand it up.
AF1 • 13 51. Install R3, 47K ohm [yellow-violet-o range]. 52. Install R2, 750K ohm [violet-green-yellow]. 53. Install R5, 100K ohm [brown-black-yellow]. 54. Install R7, 49.9K ohm [yellow-white-white-red]. 55. Install C14, .01 uF disc capacitor [marked .
AF1 • 14 Connect an audio ou tput device such as a speaker or headset to the appropriate jack (J1 or J2, respecti vely). With switch S1 in the off position you shoul d be able to he ar the tone under test. Set switches S2 and S3 in the “out” position for maximum bandw idth.
AF1 • 15 The Ramsey Kit Warra nty Please read carefully BEFORE calling or writing in about y our kit. Mos t problems can be solved wi t hout contacting the factory . Notice that thi s is not a "fine prin t" warranty. W e w a nt you to und erstand your righ ts and ours too ! All Ramsey kits w ill work if assembl ed properly.
AF1 • 16 AF1 CW AUDIO FILTER Quick Re ference P age Guide Introduction to the AF1 ............... ... 4 How it works ........................ .......... 5 Parts list .............. ................. .......... 6 AF1 Assembly instructions ..... .....
デバイスRamsey Electronics AF1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 AF1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 AF1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 AF1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 AF1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 AF1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 AF1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 AF1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 AF1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。
