Ramsey Electronics AR2 Bedienerhandbuch Seite 1

ABM1 • 1 PASSIVE AIR BAND MONITOR Ramsey Electronics Model No. ABM1 • Monitors the entire aircraft band 118 to 136 MHz without tuning! • Passive

ABM1 • 10 PARTS LIST CAPACITORS  2 2.2pF ceramic disk capacitor [marked 2.2] (C3, C11)  2 5pF ceramic disk capacitor [marked 5] (C6, C15)  4 6

ABM1 • 11 MISCELLANEOUS COMPONENTS AND HARDWARE  1 3.5mm Stereo Jack NOSW [J1]  1 4 inches of 24 gauge Red/black twisted pair  1 Case Top  1 C

ABM1 • 12 ASSEMBLY STEPS In ALL PC board assembly steps, our word "INSTALL" always means to do this: • Insert the part, oriented or "

ABM1 • 13 on one end of the part; this corresponds to the notch on the IC and shows you which way to place the part. Line up the notches and make su

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ABM1 • 16  Install C4, 68pF ceramic disk capacitor (marked 68). RF AMPLIFIER  Install C5, 1nF ceramic disk capacitor (marked 102).  Install C6, 5p

ABM1 • 17  U2 is already installed.  Install C17, 100nF ceramic disk capacitor (marked 104).  Install R6, 560 ohm resistor (green-blue-brown). T

ABM1 • 18  Install R3, 100k ohm resistor (brown-black-yellow). This part is located at the notched end of U4.  Install R5, 1k ohm resistor (brown

ABM1 • 19  Find the two battery clips. Look carefully at the two clips; the one with the narrower contact is the (+) clip and to be attached to th

ABM1 • 2 PARTIAL LIST OF AVAILABLE KITS: RAMSEY TRANSMITTER KITS • FM10A, FM25B, FM30, FM Stereo Transmitters • FM100B, FM35 Professional FM

ABM1 • 20 ABM1 ALIGNMENT AND ADJUSTMENT TUNING THE ABM1 The ABM1 does not require any frequency tuning. It will receive the entire Aircraft Band at

ABM1 • 21 ABM1 TROUBLESHOOTING While we had hoped that it wouldn’t come to this, if you are having trouble with your receiver, here are a few sugges

ABM1 • 22 No Signals can be heard  Check MAR-1SM (U1):  Check the input pin for 2.5 Volts DC +/- 10 %. This is the pin with the dot.  Check the o

ABM1 • 23 CONCLUSION If you enjoyed this Ramsey product, there are plenty more to choose from in our catalog - write or call today! We sincerely hop

ABM1 • 24 ABM1 SPECIFICATIONS Frequency of Operation: 118 to 136 MHz Receiver Type: Patented Passive Detector IF Frequencies: None Receiver

ABM1 • 25 ABM1 PARTS LAYOUT DIAGRAM

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ABM1 • 27 The Ramsey Kit Warranty Please read carefully BEFORE calling or writing in about your kit. Most problems can be solved without contacting

ABM1 • 28 TABLE OF CONTENTS Introduction ...4 Circuit Description ...

ABM1 • 3 PASSIVE AIR BAND MONITOR Ramsey Publication No. ABM1 Manual Price Only $5.00 TABLE OF CONTENTS Introduction

ABM1 • 4 INTRODUCTION Everyone from aviation enthusiasts to armchair listeners to schoolchildren can enjoy listening to aircraft and airport signals

ABM1 • 5 2nd Band-pass Filter The 2nd Band-pass filter is a copy of the first. Its job is to further filter the RF signal. It consists of coupling

ABM1 • 6 Audio Amplifier The Audio amplifier section consists of R11, the On/Off/Volume control. This part turns the power on or off and adjusts the

ABM1 • 7 ATIS, is a repeated broadcast about basic weather information, runways in use, and any special information such as closed taxiways or runwa

ABM1 • 8 routed via computers to the proper company, relieving some of the necessity for routine voice communication. With ACARS, routine items such

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