Parameter Setting Mode (Refer page 27 for how to enter the setting mode.) Time-Out-Timer The TOT feature is popular in repeater systems. It prohibits the users from transmitting on the repeater after a certain period of time has elapsed. By setting this function and activating it according to the repeaters’ requirement, the radio alerts the user by a beep 5 seconds prior to time-out. When the time is expired, transmitting stops and the transceiver automatically returns to receiving mode.
Parameter Setting Mode (Refer page 27 for how to enter the setting mode.) APO-Auto Power OFF This feature will automatically shut off the transceiver. It is useful for mobile operation to avoid draining the car battery. If there is no activity or use of the radio, it will turn off automatically after 30 minutes followed by a beep sound. 1. Default is APO-OFF. 2. Rotate dial to select APO-ON to activate the function.
Parameter Setting Mode (Refer page 27 for how to enter the setting mode.) Bell The bell informs you that you are being called by sounding a bell, and flashing the bell icon on the display. 1. [BELL OFF] icon appears on the display. 2. By rotating the main dial, the display changes as shown and Bell function setting is changed. BELL OFF BELL ON Busy-Channel-Lock-Out (BCLO) This function prohibits transmission as long as there is a signal on the receiving frequency.
Parameter Setting Mode (Refer page 27 for how to enter the setting mode.) Illumination color setting This is to select display illumination color. 1. [COLOR 1] icon appears on the display. 2. By rotating the main dial, the display changes as right and illumination color is changed. COLOR 1 is Amber (Red) illumination. COLOR 2 is Yellow illumination. COLOR 3 is Orange illumination.
Parameter Setting Mode Transmission speed setting (In packet operation) (Refer page 27 for how to enter the setting mode.) This is to set transmission speed at the time of data communication. 1. [HB 1200] icon appears on the display. 2. By rotating the main dial, the display changes as right and setting is changed. [HB 1200] Transmission speed is set at 1200bps. [HB 9600] Transmission speed is set at 9600bps. HB 1200 HB 9600 Beacon interval setting (In geolocating communication/A.P.R.S.
Useful functions Reception band switching This is to switch the receiving band. On VHF side, FM broadcasting can be received. 1. After pressing the FUNC key, press the CALL key while [F] icon is on. On VHF side, the band switches from 144MHz band to FM broadcasting band. V-V/U-U simultaneous reception This is to receive the same frequency band simultaneously both on the MAIN band and the SUB band, while in the VFO mode. 1. 34 After pressing the FUNC key, press the BAND key while [F] icon is on.
Useful functions Single-band mode This is to use the unit just like a single-band transceiver only for VHF or UHF, by erasing display on the SUB side. 1. Press the BAND key while pressing and holding the FUNC key. The display on the SUB side disappears and its function is temporary suspended. While in the V-V/U-U mode, the unit will not enter to the single-band mode. VFO Auto-program setting function This is to program various automatic settings in a certain frequency range in the VFO mode.
Us eful functions SCANNING FUNCTION Use this function to automatically search for signals. 6 different scan types are available in the unit. In parameter setting mode, choose Timer mode or Busy mode to determine the desired resuming condition. If the CTCSS(TSQ) squelch or DCS squelch is set, the audio can be heard only when the tone/code matches the incoming signal. Otherwise, scanning stops but no audio will be heard.
Useful functions •Memory Scan Scans all memory channels unless Memory skip feature is selected for a given memory. 1. Enter Memory mode. 2. Sequence is the same as in VFO scan. Use UP/ DOWN keys for commands. Range of Memory Scan Exclusive scanning for VHF/UHF: If scanning is started somewhere between 00 and 79, scanning is always repeated within this range.
Useful functions •Program Scan This is a type of VFO scan, but by setting the frequency range of the VFO into PH and PL channels, it only scans between those frequencies. With setting the PH and PL properly, up to 3 Program scan ranges will be available, which are L-PH, PLPH and PH-H. Band edge H PH PL Band edge L 1. Enter the VFO mode and set the PL and PH frequency into the designated memory channels. Refer to Memory setting for the proper sequence. 2. Return to VFO mode by pressing V/M key.
Useful functions •DCS scan Same as previous, but for DCS code search. 1. While in the DCS setting, press the UP/DOWN key for more than 1 second but less than 2 seconds to start scanning. (It scans 105 DCS codes in order.) • During scanning, 1 MHz order decimal point will flash. • The scan stops when the matching DCS code is detected and reception starts. DCS IMPORTANT: After scanning is over, it will not resume until another dialing or UP/ DOWN key pressing will be made. 2.
Useful functions Narrow-band mode This feature is to prepare for the possible future change of the tuning step. 1. Press the MHz key together with the FUNC key. [Nar] icon illuminates on the display to show the unit is in the Narrow mode. Nar In the Narrow mode 2. Repeat the same operation to return to the normal mode. IMPORTANT: In the NARROW mode, the microphone gain and modulation during transmission and the demodulation range during reception will be lower.
Selective Communication Many repeaters require a CTCSS tone or a DCS code encode setting as a “key” to access the system, so-called “selective-calling”. Sometimes, CTCSS or DCS decode features are used on the output of a repeater so they can be used as a squelch. In this mode, regardless of the main squelch status, the audio can be heard ONLY when the matching tone/code signal is received.
Selective Communication 023 025 026 031 032 036 043 047 051 053 054 065 071 072 073 074 114 115 116 122 125 131 132 134 143 145 152 155 156 162 165 172 174 205 212 223 225 226 243 244 245 246 251 252 255 261 263 265 266 271 274 306 311 315 325 331 332 343 346 351 356 364 365 371 411 412 413 423 431 432 445 446 452 454 455 462 464 465 466 503 506 516 523 526 532 546 565 606 612 624 627 631 632 645 654 662 664 70
Selective Communication Digital voice communication (DR-620T only) By installing an optional digital unit EJ-47U, digital voice communication becomes enabled. 1. Install EJ-47U to the connecter CN3 of the unit. 2. Press the FUNC key, and then press the SQL key while [F] icon is illuminating. [ ] is shown on the display. 3. Press the FUNC key or the PTT key to enter the digital communication mode. Repeat step 2 to exit and return to analog FM mode. 4.
Special Functions THEFT ALARM This alert uses a beep sound when the unit is about to be removed in an improper manner. This function is useful when the unit is installed in a vehicle. To connect, set and operate IMPORTANT: Be sure to connect the power cable directly to a car battery. The power cable of this unit requires voltage at all times to activate this function. For the same reason, ACC ON/OFF feature must be deactivated. DC power cable Handle of the car etc. Battery Transceiver 1.
Special Functions 3. Set SCR-ON in the setting mode. The [*] icon will appear on the display. 4. Turn OFF the unit. Alarm function is activated, the display will turn off and TX display lamp will start illuminating. 5. TX display lamp VHF/UHF TWIN BAND FM TRANSCEVER MW DR-620 V/M MAIN TX/RX MAIN VOL VV/UU RX BAND SHIFT LOCK PACKET DIGITAL BAND CALL MHz TS/DCS H/L SQL SET FUN To deactivate, turn ON the unit and set SCROFF in the setting mode.
Special Functions Setting alarm starting time Choose this operation when a delay period is desired. 1. Enter the Parameter setting mode as described previously and select SCR-DLY. Follow the previous instruction to set. 2. Turn off the unit. Display will disappear but the LCD illumination stays on. After 20 seconds TX LED lights up, illumination dims, and alarm functions. The system won’t work during the 20 second “DELAY” period. 3. The alarm sounds under the same condition as described previously.
Special Functions Cable Clone This feature will copy the programmed data and parameters in the master unit to slave units. 3.5 ø stereo-mini plug Master side Slave side Plug configuration (both for Master/Slave) GND DATA TX/RX Connection Make a cable using 3.5 mm stereo-mini plugs as shown above. Make a master unit by setting and programming it as desired. Turn off both units. Connect the cable between the DATA jacks on both master and slave. Turn both radios on after the connection is made.
Special Functions Setting on the Master side 1. Press CALL key with FUNK key pressed. CLONE will be displayed and the radio enters the clone mode. 2. Press PTT. SD*** will be displayed and it starts sending the data into the slave unit. During transmission 3. [PASS] will appear on the display when the data is successfully transmitted. 4. The master radio may stay turned on for the next clone. Turn off the unit to exit from the clone mode.
Special Functions Packet Communication Packet communication is a high-speed data communication system transmitting a package of data by keyboard operation of a personal computer. The use of Digi-peaters (relay stations) offers communications with DX stations (distant stations). For packet communication, a personal computer and an optional EJ-50U (TNC unit) are required other than this unit. EJ-50U is equipped with Digi-peater function.
Special Functions 4. Connect EJ-50U with a personal computer. Connect DSUB connecter on the rear panel and a personal computer with a straight cable. RS-232C straight cable Personal computer IMPORTANT: Between DSUB and a personal computer, use 9-pin RS-232C straight cable (male-female). Packet Mode Setting 1. Press the FUNC key. While [F] icon is on, press the H/L and SQL keys. [TNC] lights up on the display and the unit enters packet mode.
Special Functions APRS Install an optional TNC unit EJ-50U and an external GPS receiver to operate this function. APRS (Automatic Packet/Position Reporting System) is a program software registered as a trademark of Bob Bruninga, WB4APR. With this program, you may trace a mobile station on the map in a computer. For tracing a mobile station, you may need a PC installed with APRS, this unit (transceiver), TNC (EJ-50U).
Special Functions For operation For detailed information, please see a list of commands and an instruction manual of EJ-50U. 1. Boot up the terminal software on the PC, press the FUNC key and press the H/L key while [F] icon is on. [TNC] lights up on the display and the unit enters Geolocating communication mode. 2. Initial screen of TNC appears on the PC. 3. Set communication speed of radio packet from the command mode (cmd:). [Example cmd: HB 1200 or 9600] 4. Register call sign of your station.
Special Functions TNC Clone This feature enables setting change required for APRS function without connecting to a PC. Please use this feature when setting change is desired while APRS function is in operation. Setting change is available for call sign of your station, communication speed and data transmission time separation (Setting is made in setting mode). 1. Press the FUNC key and then press the H/L key while [F] icon is on (Enter packet mode). 2. Press the CALL key with the FUNC key pressed.
Special Functions Remote Control Operation (EMS-57 Only) The transceiver can be controlled remotely by operating the DTMF keys on the microphone. Frequencies can also be entered directly through the key pads. 1 LOCK DTMF 2 3 OFF OFF No. Key 1 DTMF 2 LOCK Function Enter the remote command or the frequency. Press LOCK to prevent the transceiver from accepting remote control inputs from the microphone. 3 DTMF/REMOTE To operate remote control, press REMOTE.
Special Functions Entering a frequency directly Frequencies can be entered directly by pressing the numerical keys of the microphone. • Range of frequencies to be input 87.500 - 107.995MHz (WFM reception) 144.000 - 145.995MHz 430.000 - 439.995MHz 1. Set the microphone DTMF/REMOTE switch to the REMOTE position. 2. DTMF keys can be used to enter from the 100MHz digit. (Ex.) When setting 144.20 MHz with the tuning step set to 20kHz.
Maintenance / Reference Reset Resetting the unit returns all programmed contents to their factory default setting. 1. Press the PWR key for more than 1 second with the FUNC key pressed to turn the power on. 2. All segments of the LCD will be displayed, then default settings are displayed. DCS SUB AM MiLo Nar TNC R SQL BUSY 1 3 5 7 9 BUSY All LCD segments NOTE: While holding the FUNC key down, turn the power on. All segments of the LCD will be displayed, then default settings are displayed.
Maintenance / Reference Troubleshooting Please check the list below concluding that the transceiver is faulty. If a problem persists, reset the transceiver. This can sometimes correct erroneous operation. Problem Possible Causes Power is on, nothing a. + and - polarities of power appears on the connection are reversed. Display b. Fuse is blown. c. ACC power supply is connected but is OFF. Potential Solutions a.
Maintenance / Reference Problem Possible Causes Potential Solutions Packet a. TNC is not connected or set a. Make sure the connections and communication does properly. configurations are properly set. not function. b. The unit is not in the packet b. Switch to the packet mode. mode. c. The squelch is open. c. Adjust the squelch level where it will open by a reception signal. d. The data transmission speed d. Adjust the speed by the PC. is not configured. e. Use a straight type PC cable. e.
MIC PC input GPS input Low-frequency amplifying limiter Lowpass filter NJM2902V TGT0210Q TMT0211Q EJ-50U 430M VCO 2SK508K2 21.25 MHz Buffer amplifier 2SC5066 Buffer amplifier 2SC5066 PLL M64076AGP 144M VCO 2SK508K2 Buffer amplifier 2SC5226 Excitation amplifier 2SK3074 Excitation amplifier 2SK2975 Power amplifier RD70HVF1 DR-620E 144.000〜145.995 MHz 430.000〜439.995 MHz DR-620T 144.000〜147.995 MHz ANT 430.000〜449.
Maintenance / Reference Specification General DR-620T, DR-620E Frequency coverage Operating mode Frequency resolution 87.500 - 107.995MHz (WFM) 108.000 - 135.995MHz (AM RX) 136.000 - 173.995MHz (RX) 144.000 - 147.995MHz(TX) 335.000 - 479.995MHz (RX) 430.000 - 449.995MHz (TX) 87.500 - 107.995MHz (WFM) 144.000 - 145.995MHz (RX, TX) 430.000 - 439.995MHz (RX, TX) 16K0F3E (Wide mode), 8K50F3E (Narrow mode) 5, 8.33, 10, 12.
MEMO 61