User manual ROLLS HR78

[. . . ] In the absence of such purchase receipt, the warranty period shall be one (1) year from the date of manufacture. This warranty shall be invalid if the product is damaged as a result of defacement, misuse, abuse, neglect, accident, destruction or alteration of the serial number, improper electrical voltages or currents, repair, alteration or maintenance by any person or party other than our own service facility or an authorized Service Center, or any use violative of instructions furnished by us. This one-year warranty is in lieu of all expressed warranties, obligations or liabilities. [. . . ] For complete Warranty information and registration, please visit our website; www. rolls. com. Or, complete the Warranty Registration Card and return it to the factory. SPECIFICATIONS FM Intermediate Frequency: Tuning Range: 30 dB quieting sensitivity: IF Rejection 87. 9 MHz: Image Rejection 105. 9 MHz: 3dB Limiting Sensitivity: THD 1 mV Input: Auto Tuning Sensitivity 97. 9 MHz: AM Suppression: AM Intermediate Frequency: Tuning Range: US: International: 20 dB quieting sensitivity: IF Rejection 603 kHz: Image Rejection 1404 kHz: Auto Tuning Sensitivity 999 kHz: Max Output @ 1 kHz: Supply Voltage: 450 kHz +/- 5 520 - 1710 531 - 1602 kHz 58 dB 25 - 32 dB 32 - 38 dB 28 - 35 dB 0. 5V +/- 0. 05V 12 VDC, 200mA (Rolls Model PS27) (190w x 185d x 42. 5h) mm 3 lbs 10. 7 MHz +/- 0. 3 87. 5 - 108 MHz 28 dB 50 - 56 dB 20 - 26 dB 28 - 35 dB 0. 5 - 2 % 25 - 30 dB 26 - 32 dB TABLE OF CONTENTS INTRODUCTION FEATURES INSPECTION TABLE OF CONTENTS DESCRIPTION Front Panel Rear Panel CONNECTION OPERATION SPECIFICATIONS WARRANTY 1 2 3 4 5 6 Back Cover Dimensions: Weight: SCHEMATIC FRONT PANEL DESCRIPTION · POWER: When pressed in, applies power to the HR78. · FREQUENCY DISPLAY: LCD display showing the active information relevant to the current operation of the HR78. · 1 - 6 PRESET STATIONS: Selects and Stores the Preset stations. · BAND: Selects between the two FM preset bands, and the AM preset band. · MEMORY: When the desired station is selected, this button is pressed, followed by the desired Preset Station number to Store the preset. When "AUTO" is shown in the display, and the Tuning up or down button is pressed - the HR78 automatically searches up or down for the next station with strong enough signal to lock onto. · LEVEL: Adjusts the output level of both the RCA and 1/8" (3. 5mm) outputs. PLEASE NOTE: FOR A LINE LEVEL OUTPUT SET THE LEVEL CONTROL AT APPROXIMATELY 3 O'CLOCK. · TUNING (- and +): Selects the stations that the HR78 is receiving. A B C D E 1 AUTO 2 MONO KHz FREQUENCY DISPLAY F HR78 DISPLAY A: Band indicator and number. When displayed, pressing the HR78 Tuning + and - buttons will seek out the closest station. E: Preset number - indicates which preset has been selected within the selected band. AM Loop antenna connection Connect the cord of the accessory AM loop antenna to the AM LOOP 300 Ohm terminals. When tuning in AM stations, move the antenna to the left or right and set in the direction which yields the optimum reception. · Do not place the power cord or speaker cords near the loop antenna. Multipath reflections FM waves, like light waves, travel in a straight direction unless reflected off objects in their path. Because of this, two sets of waves reach your antenna from the FM station; those that have traveled directly to the antenna, and those that have been reflected off buildings or mountains. When the antenna receives both kinds of signals, the two interfere with each other and result in distorted sound and poor separation. [. . . ] The HR78 provides a rear panel switch to select the frequency centers for proper reception. If you are not sure where this switch should be set, contact your local station for their operating information. PROGRAMMING PRESETS Select the AM or FM band you wish to program (AM, or FM 1 or 2). [. . . ]