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DX 2527 |
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2527 |
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RX / TX |
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SWR |
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ON |
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SET |
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901009 |
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22 |
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1 |
3 |
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dB |
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+60 |
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4 |
6 |
8 |
1012 |
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5 |
7 |
9 |
+20 |
+40 |
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WATTS |
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SIGNAL |
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POWER |
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ON |
RF POWER |
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ECHO |
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TIME |
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NB/ANL R.BEEP SPLIT PRG MAN SHF |
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DIM SWR SCAN MEM ENT LOCK |
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OFF |
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MIN |
MAX |
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MIN |
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MAX |
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OFF |
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CHANNEL |
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MICROPHONE |
CALIBRATE |
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TONE |
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TALK BACK |
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MIC RF |
CLARIFIER SQUELCH VOLUME |
MODE |
PHONE |
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VOICE |
ROBOT |
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USB LSB |
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R2 |
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AM |
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CW |
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ECHO |
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R3 |
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FM |
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PA |
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R4 |
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RF |
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OFF |
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AM·FM·SSB·CW·PA |
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Amateur Base Station Transceiver |
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OWNER’S MANUAL |
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TABLE OF CONTENTS |
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SPECIFICATIONS ............................................................. |
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2 |
INSTALLATION ................................................................ |
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3 |
OPERATION |
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Introduction .................................................................... |
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6 |
Control & Connections |
…………………………………… |
6 |
Rear Panel Connectors |
…………………………………... |
10 |
Microphone ………………………………………………… |
11 |
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Operation …………………………………………………... |
11 |
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Programming. ……………………………………………… |
12 |
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- 1 -
SPECIFICATION:
GENERAL
Frequency Range |
28.0000 – 29.6999 MHz |
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Emission Types |
CW, FM, AM, USB, LSB |
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Frequency Control |
Phase-Lock-Loop Synthesizer |
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Frequency Tolerance |
0.005% |
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Frequency Stability |
0.003% |
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Temperature Range |
-30OC to +55OC |
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Antenna Impedance |
50 Ohms |
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Antenna Connectors |
Standard SO-239 Type |
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Meter Function |
Meter #1: RF Output Power / Antenna SWR. |
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Meter #2: Received Signal Strength / MOD% |
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AC Input Voltage |
AC 120V , 60 Hz |
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TRANSMITTER
RF Power Output |
25W: USB, LSB. 10W: AM, FM, CW |
Antenna Connectors |
UHF Type, 50 Ohms |
AM Modulation |
Up to 100% |
Clarifier Range |
±1 KHz |
Spurious Emissions |
-60dB |
Carrier Suppression |
-60dB |
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RECEIVER
Sensitivity for 10dB S/N |
AM: 0.5uV |
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Sensitivity for 20dB S/N |
FM : 0.25uV |
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Sensitivity for 10dB S/N |
USB/LSB: 0.3uV |
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Adjacent Channel Rejection |
-60dB |
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Image Rejection Ratio |
-50dB |
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AGC Figure of Merit |
SSB//AM: 80 dB for 50mV |
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for 10 dB Change in Audio Output |
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Audio Output Power @ 10% |
2.5W |
THD
(SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.)
- 2 -
INSTALLATION:
Location/Connection
The transceiver should be placed in a convenient operating location close to an AC power outlet and the antenna lead in cable(s).
The transceiver is powered with the AC power cord set. Proceed as follows to complete all necessary connections to the transceiver.
1.Your transceiver has standard antenna connectors of type SO-239 both located on rear panel; for easy connection to standard PL259 coax plugs. If the coax antenna cable must be made longer, use coax cable with impedance of 50 ohms and use only enough cable to suit your needs. This will insure a proper impedance match and maximum power transfer from the transmitter to the antenna.
2.AC Power Operation: Use 120 volts AC.
Noise Interference
There are several kinds of noise interference you may encounter in fixed operation. Some of these noise sources are; fluorescent buzz, nearby commercial broadcast, electrical appliance, lawnmower, and electrical storms, etc. Commercial products are available to reduce interference from these sources. Consult your dealer or professional amateur radio supply shops.
- 3 -
Antennas
Antennas are purchased separately and include installation instructions. Numerous type of antennas are available that range from emphasis on easy of installation to emphasis on performance. Often the difference in performance between many of the antenna is modest.
1.Vertical Ground Plane Antennas:
These are omni-directional antennas that provide optimum performance for contacting other fixed stations using vertical type antenna in addition to all mobile stations. For medium to long range communications work.
2. Directional Beam Antennas:
Highly efficient and directional antennas generally intended for fixed-to-fixed very long-range communications.
Remote Speaker
The external speaker jack (EXT. SP.) on the rear panel is used for remote receiver monitoring. The external speaker should have 8 ohms impedance and be able to handle at least 3 watts. When the external speaker is plugged in, the internal speaker is disconnected.
Note: The PHONE jack on the front panel overrides both external and internal speakers. When the plug from a headphone is plugged to the PHONE jack, both internal and external speakers are silenced simultaneously.
- 4 -
Public address
An external 8 ohms, 3-Watt speaker must be connected to the PA jack located on the rear panel when the transceiver is used as a public address system. The speaker should be directed away from the microphone to prevent acoustic feedback. Physical separation or isolation of the microphone and speaker is important when operating the PA at high output levels.
- 5 -
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