User manual SANGEAN ATS-818ACS

[. . . ] CONTENTS Features Control Locations Choosing a Power Supply Preliminary Settings Tuning Modes Clock Radio Operation Special Tuning Techniques and Controls Using Your Cassette Recorder Special SSB/CW Reception Techniques Care and Maintenance Specifications 2 3 5 7 12 21 23 26 29 34 36 1 FEATURES C o n t i n u o u s Tuning a l l o w s c o n t i n u o u s reception of all stations and bands. Fast response, Three Color LCD indicates station frequency in large easyto-read numbers, including dual time, memory location, signal strength and battery life. Band Select Buttons offer instant selection of any desired frequency bandwidth o n SW. Tuning S p e e d S e l e c t S w i t c h p e r m i t s you to tune stations at either a fast or slow speed. Adjustable Sleep Timer allows you to fall asleep to music or other programming DirectAccess Keypad permits instant tuning of any desired frequency from 87. 5 Standby Mode turns on the radio to 108MHz on the FM band and from 150 automatically at a pre-set time either by to 29, 999 KHz on the AM band. [. . . ] Signal strength is recorded on the SIGNAL STRENGTH INDICATOR. 1 2 3 4 5 6 7 5. Press and hold the [ [ or [V] buttons again to resume scanning. When you reach the upper or lower limits of the band, the scanning starts all over again as long as the button is depressed once more. 6. Adjust the VOLUME and TONE controls as you like. 18 MEMORY TUNING Yo u m a y s t o r e u p t o e i g h t e e n d i f f e r e n t frequencies on the SW/FM bands and up to nine different frequencies on each o f LW/ M W b a n d s f o r i n s t a n t s e l e c t i o n of your favorite stations. Storing a Frequency 1. Press POWER button to turn on radio . 2. Turn to any frequency using any of the previously mentioned tuning methods. 3. Press the button marked "M" for MEMORY it will start flashing in the ddisplay for 15 seconds during which time press any of the buttons marked 1-9 on the keyboard and your station will be stored in that memory position. For the SW/FM bands frequencies press 1-9 and then 01-09 for each 18 memory positions on FM and SWbands. The display will show the memory position the station is now stored in. You may store your stations in any sequence you want. You do not have to start with 19 RECALLING A FREQUENCY 1. Press POWER button to turn on radio. 2. Select a band in which a station is stored that you want to recall. 3. Press any of the NUMBERED buttons for a desired station and the radio will instantly tune to it and display that frequency and the MEMORY position number. If, while tuning, you encounter interference, caused by the signal from an adjacent station, press the button for the band you are listening to and select the NARROW position. The interference is reduced or muted. RF G A I N CONTROL This control adjusts the receiver's S e n s i t i v i t y. F o r LW, M W S W r e c e p t i o n rotate the control to the MAX position, t h i s p r o v i d e s t h e m a x i m u m s e n s i t i v i t y. w h e n y o u l i s t e n t o t h e MW, s t a n d a r d a M b a n d , o r LW b a n d t h r o u g h e x t e r n a l antenna, rotate the control only as far as needed to obtain a good signal . If you turn the knob further you might hear a distorted signal . For weak stations, rotate the control to the MAX position. For full reception, leave the switch in the WIDE position. If you encounter interference, adjust the control in both directions until you obtain the best compromise between your station and the interference. If you plan to listen to Morse code, referred to as CW (continuous wave), set the BFO switch to ON position. If you encounter too much noise as you tune, set the AM NARROW/WIDE switch to NARROW position. 23 HEADPHONE USE While not a control, you may consider using HEADPHONES to obtain the best audio clarity when listening to SW. Since many SW stations broadcast only marginal signals, using HEADPHONES will enable you to distinguish between the signal and the noise usually encountered at night. Be sure that the HEADPHONES terminate in a 1/8 inch plug, which is inserted into the HEADPHONE jack located on the left side of the radio, marked with symbol When the HEADPHONES are plugged in, the speaker is muted. LOCK SWITCH USE Using the LOCK Switch prevents unauthorized operation of the radio and will also prevent the station you are listening to from being changed. When the LOCK switch is moved to its up position, the POWER button and TUNING controls are completely disabled. If the radio is on when the LOCK switch is moved to its up position, you will not be able to turn it off. If the radio is off, with the LOCK Switch in its up position, you will not be able to turn it on. This will also prevent it from being turned on by accident, when packed in a attache case. To release the LOCK Switch, simply move the switch down. Because the radio is capable of receiving FM multiplex stereo, Stereo HEADPHONES Should be used. W h e n l i s t ening to stereo FM, be sure that the FM: STEREO/MONO switch is set to the STEREO position. 24 EXTERNA To obtain optimum performance from this unit, especially when listening to SW/SSB/ C W a n e x t e r n a l antenna should be used, if at all possible. The antenna is connected to the EXTERNALANTENNAADAPTER and then plugged into the EXTERNALANTENNA jack located on the left side of the radio. R SWITCH Located in battery compartment of the unit, is a switch marked, 9K/10K. [. . . ] Note: The recording will continue until the cassette tape reaches the end of a side and It will then cease automatically and disengage the tape. 31 30 29 28 27 26 32 28 SPECIAL SSB/CW RECEPTION TECHNIQUES Many stations transmit unmodulated telegraph transmissions in the shortwave b a n d . To r e c e i v e t h e s e s p e c i a l M o r s e c o d e characters, the radio uses a special circuit a beat-frequency oscillator, to modify the transmitted signal so that you can hear it. this particular type of telegraph transmission is called continuous wave(CW) transmission . Many stations transmit voice signals with a suppressed carrier in the single side band . [. . . ]