Galaxy DX 959, Руководство по обслуживанию, Страница: 3 / 35

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DX 959 SPECIFICATIONS
1.0 GENERAL
Model DX 959
Frequency Range 26.965 - 27.405MHz.
Emission Modes AM/USB/LSB
Frequency Control Phase Lock Loop (PLL) synthesizer.
Frequency Tolerance ±
0.005 %.
Frequency Stability ±
0.001 %.
Operating Temperature Range
-30
°
C to +50
°
C.
Microphone Plug-in dynamic; with push-to-talk switch and coiled
cord.
Input Voltage
13.8V DC nominal
±
15%.
Current Drain : Transmit (AM full mod.) <3.5A.
Current Drain : Receiver (Squelched) <0.5A.
(Max. audio output) <1.0A.
Antenna Connector UHF, SO239.
Dimensions 2-3/8”(H) x 7-7/8”(W) x 9-1/4”(D).
Weight 5 lb.
1.1 TRANSMITTER
RF Power Output AM : 4W SSB : 12W
RF Transmit Modes AM/SSB
Modulation High and low level Class B, Amplitude Modulation :
AM and SSB
Spurious Emissions -55 dB.
Carrier Suppression -55 dB.
Audio Frequency Response 300 to 2500 Hz
Antenna Impedance 50 Ohms.
Output Indicators Meter shows relative RF output power, SWR and AM
Modulation. Transmit LED glows red when
transmitter is in operation.
1.2 RECEIVER
Sensitivity For 10dB S/N (AM)
<0.5
µ
V.
Sensitivity For 10dB S/N (SSB)
<0.25
µ
V.
IF Frequency AM : 10.695 MHz 1st IF, 455 KHz 2nd IF.
Image Rejection -65 dB.
Adjacent Channel Selectivity -60 dB.
RF Gain Control 45 dB adjustable for optimum signal reception.
Automatic Gain Control (AGC)
Figure Of Merit 100 mV for 10 dB Change in Audio Output
Squelch
Adjustable; threshold less than 0.5
µ
V.
Noise Blanker RF type.
Audio Output Power 2 watts into 8 Ohms.
Audio Frequency Response AM and SSB : 300 to 2500 Hz.
Built-in Speaker 8 Ohms, round.
External Speaker (Not Supplied) 8 Ohms; disables internal speaker when connected.
(SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE)
DX 959
CHAPTER 2
OPERATION