User manual GALAXY DX 95T

[. . . ] 2 DX 95T BI RI SERI S G G E C D B +4 0 dB +6 0 10 0 % CHAPTER 2 Installation . 3 3 4 4 4 4 E F G H PA FM AM U SB LSB External Speaker . . H I H SW R ALERT G S 1 M OD 3 40 9 57 60 +20 80 A 20 0 1 20 40 60 8 0 Public Address . 15 2 3 AX MO D SW R PW R RB O FF EC H O GN F O FF 40dB PAD MO D LAM P O FF +10KH z RX / TX 5/ D I I 6 GT O FF RX NB AN L 1 VO L SQ MI C TB DI M PO W ER FI E N C O ARSE DX 95T O FF PU SH TB O FF PU SH F. D I O FF SP PU SH N B/ L AN CHAPTER 3 Operation . [. . . ] ILLUMINATED FACE PLATE: All faceplate lettering will fully illuminate to allow the user easy viewing at night. This unique, solid state, backlight is designed to maximize night vision while minimizing eye fatigue. Therefore, it is ideal for switch and control recognition day or night. RB/OFF/ECHO SWITCH: When in the RB position, the radio transmits an audio tone at the end of your transmission to indicates that transmission has ended. However, there are two small internal adjusting pots inside the Echo module, which is located in a metal box just behind the channel selector switch. MODE SWITCH: This control allows you to select one of the following operating modes: PA/FM/AM/USB/LSB. GNF/OFF/40dB PAD SWITCH: When in the GNF position, the Galaxy Noise Filter is activated. This is a special noise filter that de-emphasizes audio high frequency response in order to increase the signal-to-noise ratio of weak signals. While you will notice a dramatic reduction in the "rushing" sound when this filter is activated, it does not have much effect on the signal-to-noise ratio of strong signals. The GNF is for SSB use only and will cause distortion if used during AM reception. When the switch is in the 40dB PAD position, the 40dB attenuation circuit is activated. When the switch is in the OFF position, neither the GNF circuit nor the Attenuation circuit will be active. MOD LAMP/OFF/+10KHz SWITCH: When in the MOD LAMP position, the Mod Lamp circuit is activated. Do not advance the control too far or some of the weaker signals will not be heard. Adjust COARSE/FINE control to clarify the SSB signals or to optimize AM/FM signals. If the channel is clear, depress the push-to-talk switch on the microphone and speak in a normal voice. RECEIVING SSB SIGNALS There are four types of signals presently used for communications: FM, AM, USB and LSB. When the MODE switch on your unit is placed in the AM position, only standard double-side band and in FM position, only frequency deviation, full carrier signals will be detected. An SSB signal may be recognized while in the AM or FM mode by its characteristic "Donald Duck" sound and the inability of the detector to produce an intelligible output. The USB and LSB modes will detect upper sideband and lower sideband respectively, and standard AM signals. SSB reception differs from standard AM reception in that an SSB receiver does not require a carrier or opposite side band to produce an intelligible signal. A single-side band transmitted signal consists only of the upper or the lower side band and no carrier is transmitted. The elimination of the carrier from the AM signal helps to eliminate the biggest cause of whistles and tones heard on channels that make even moderately strong AM signals unreadable. [. . . ] If the washer is not captive to the pin receptacle body, make sure that it is placed on the threaded portion of the pin receptacle body before soldering. If the microphone jack is used to hold the pin receptacle during soldering operation, best results are obtained when the connections to pin 1 and 3 are made first and then the connections to pins 2 and 4. Use a minimum amount of soldering and be careful to prevent excessive solder accumulation on pins, which could cause a short between the pin and the microphone plug housing. When all soldering connections to the pins of the microphone are completed, push the knurled ring and the housing forward and screw the housing onto the threaded portion of the pin receptacle body. [. . . ]