Galaxy DX 929, Service Manual

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1.0 GENERAL
Model DX 929
Channels 40
Frequency Range
26.965 – 27.405 MHz
Emission Modes AM
Frequency Control Phase Lock Loop (PLL) synthesizer
Frequency Tolerance 0.005 %
Frequency Stability 0.001 %
Operating Temperature Range
-30
°
C to +50
°
C
Microphone
Dynamic PTT, 500
Ω
Input Voltage 13.8V DC
Antenna Connector UHF; SO239
Dimensions 7 1/4”(W) x 9”(D) x 2 1/4”(H)
Weight 3.4 lbs.
1.1 TRANSMITTER
RF Power Output AM : 4 watts
RF Transmit Modes AM
Modulation High and Low level Class B, Amplitude Modulation
Spurious Emissions - 60dB
Carrier Suppression - 60dB
Audio Frequency Response 300 to 2500 Hz
Antenna Impedance 50 Ohms
Output Indicators Meter shows incoming signal strength, RF output
power, SWR and AM Modulation level. Transmit
LED glows red when transmitter is in operation.
1.2 RECEIVER
Sensitivity For 10dB S/N
< 0.5
µ
V
IF Frequency AM: 10.695 MHz 1st IF, 455 KHz 2nd IF
Image Rejection - 50dB
Adjacent Channel Selectivity - 60dB
RF Gain Control 45dB adjustable for optimum signal reception
Automatic Gain Control (AGC) Figure Of Merit 100mV for 10dB Change in Audio Output
Squelch
Adjustable; threshold less than 0.5
µ
V
Noise Blanker RF type
Audio Output Power 2.5W @ 10% THD
Audio Frequency Response 300 to 2500 Hz
Built-in Speaker 8 Ohms, 4 Watts
External Speaker (Not Supplied) 8 Ohms, 4 Watts
(SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE)
DX 929 CHAPTER 1
SPECIFICATIONS