Specifications; General; Transmitter; Receiver - Galaxy DX 979 Service Manual

DX 979

1.0 GENERAL

Model
Channels
Frequency Range
Emission Modes
Frequency Control
Frequency Tolerance
Frequency Stability
Operating Temperature Range
Microphone
Input Voltage
Antenna Connector
Dimensions
Weight

1.1 TRANSMITTER

RF Power Output
RF Transmit Modes
Modulation
Spurious Emissions
Carrier Suppression
Audio Frequency Response
Antenna Impedance
Output Indicators

1.2 RECEIVER

Sensitivity For 10dB S/N (AM/ SSB)
IF Frequency
Image Rejection
Adjacent Channel Selectivity
RF Gain Control
Automatic Gain Control (AGC) Figure Of Merit
Squelch
Noise Blanker
Audio Output Power
Audio Frequency Response
Built-in Speaker
External Speaker (Not Supplied)
(SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE)
DX 979
40
26.965 – 27.405 MHz
AM/USB/LSB
Phase Lock Loop (PLL) synthesizer
0.005 %
0.001 %
-30°C to +50°C
Dynamic PTT, 500 Ω
13.8V DC
UHF; SO239
7 1/4"(W) x 9"(D) x 2 1/4"(H)
3.5 lbs.
AM: 4W; USB/LSB: 12W PEP
AM/SSB
High and Low level Class B, Amplitude Modulation:
AM and SSB.
- 60dB
- 60dB
300 to 2500 Hz
50 Ohms
Meter shows incoming signal strength, RF output
power, SWR and AM Modulation level. Transmit
LED glows red when transmitter is in operation.
AM: < 0.5 uV ; USB/LSB: < 0.25 uV
AM: 10.695 MHz 1st IF, 455 KHz 2nd IF
- 50dB
- 60dB
45dB adjustable for optimum signal reception
100mV for 10dB Change in Audio Output
Adjustable; threshold less than 0.5µV
RF type
2.5W @ 10% THD
300 to 2500 Hz
8 Ohms, 4 Watts
8 Ohms, 4 Watts
- 2 -
CHAPTER 1

SPECIFICATIONS