Ramsey Electronics AM25 Instrukcja Obsługi

AR1 • 1 Ramsey Electronics Model No. AR1 • Tunes the entire 118 - 136 MHz Air band • Operates on internal 9 volt battery • Listen to cont

AR1 • 10  1 9-volt battery snap connector  1 9-volt battery hold-down clamp  1 AR1 printed circuit board In ALL PC board assembly ste

AR1 • 11

AR1 • 12 ASSEMBLY INSTRUCTIONS  1. Press S1 firmly into its six holes and solder all six pins. The switch fits in the board only one way. Be sure

AR1 • 13  18. Install R4, 47K [yellow-violet-orange].  19. Install C8, .001 µF (marked .001 or 102).  20. Install R5, 1K ohms [brown-black-red].

AR1 • 14  36. Install FL1, the 10.7 MHz ceramic filter. It has three wire leads and may be installed either way.  37. Install C16, .001 µF (marked

AR1 • 15  54. Install JMP 2.  55. Install U3, LM324. Be sure to orient the notched end toward the front (control) end of the PC board.  56. Insta

AR1 • 16  78. Install C27, 100 to 220 µF, observe polarity.  79. Install C28, .01 µF (marked .01 or 103 or 10nf).  80. Install U4, the LM386 audi

AR1 • 17 ALIGNMENT AND ADJUSTMENT Alignment of the AR1 receiver consists of simply adjusting L6 for the desired tuning range and peaking the IF tra

AR1 • 18 alignment. If you tune in such a signal on your receiver, remember that you will have to increase the local oscillator frequency later in o

AR1 • 19 THE RAMSEY ELECTRONICS CASE, KNOB & HARDWARE OPTION Your finished receiver can be installed in a variety of enclosures of your own de

AR1 • 2 PARTIAL LIST OF AVAILABLE KITS RAMSEY TRANSMITTER KITS • FM10A FM Stereo Transmitter • FM25 Synthesized FM Stereo Transmi

AR1 • 20 MODIFICATIONS No alterations of the basic circuit board by the average user are recommended for the AR1 receiver. While many of our ham r

AR1 • 21 4. Operation of the local oscillator can be verified with a simple VHF receiver or frequency counter. Remember that it is supposed to be se

AR1 • 22

AR1 • 23 The Ramsey Kit Warranty Please read carefully BEFORE calling or writing in about your kit. Most problems can be solved without contacting

AR1 • 24 Aircraft Band ReceiverQuick Reference Page Guide Introduction to the AR1 ...4 What You Can Expect To Hear ...

AR1 • 3 AR1 AIRCRAFT BAND RECEIVER KIT Ramsey Publication No. MAR1 Manual Price Only: $5.00 TABLE OF CONTENTS Introduction to the AR1 ...

AR1 • 4 INTRODUCTION TO THE AR1 AVIATION RECEIVER KIT The Ramsey AR1 Aviation Receiver is characterized by exceptional sensitivity, image rejecti

AR1 • 5 intended flight plan. This communication is done before contacting ground control for taxi instructions. From the control tower, ground move

AR1 • 6 THOSE FAST-TALKING PILOTS AND CONTROLLERS! We don't want you to blame the Ramsey AR1 if all you hear are short bursts of words that d

AR1 • 7

AR1 • 8 CIRCUIT DESCRIPTION The antenna is coupled through C1 to a three-section tuned LC filter input network. 118-135 Mhz signals are amplified

AR1 • 9 PARTS LIST CAPACITORS  2 3.9 pF ceramic capacitor (C3,C5)  1 10 pF ceramic capacitor (C11)  2 27 pF ceramic capacitor(C12,C14)  3 8