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DX 2547
SPECIFICATIONS
1.0 GENERAL
Model DX
2547
Frequency Range
26.965 – 27.405 MHz
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
Dynamic PTT, 500
Ω
Input Voltage (DC/AC Selectable)
13.8V DC / 110V AC 60Hz
Current Drain: Transmit (AM full mod.)
< 3.5A
Current Drain : Receiver (Squelched)
≤
0.5A
(Max. audio output)
< 1A
Antenna Connector
UHF; SO239
1.1 TRANSMITTER
RF Power Output
AM : 4W ; SSB : 12W PEP
RF Transmit Modes
AM/SSB
Modulation
High and Low level Class B, Amplitude Modulation :
AM and SSB.
Spurious Emissions
- 60dB
Carrier Suppression
- 60dB
Audio Frequency Response
300 to 2500 Hz
Antenna Impedance
50 Ohms
Output Indicators
Meter shows relative 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 (AM/ SSB)
< 0.5
µ
V / < 0.15
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 2547
CHAPTER 2
OPERATION
Summary of Contents for DX 2547
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Page 17: ...17 Figure 4 1 Transmitter test setup Figure 4 2 Receiver test setup...
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Page 23: ...23 PART LIST...
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Page 39: ...39 DX 2547 MAIN PCB...