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Alinco Dr-620t/e Vhf/uhf Fm Transceiver Instruction Manual
Alinco Dr-620t/e Vhf/uhf Fm Transceiver Instruction Manual
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![Page 55
52
Special Functions
APRS operation
For detailed information, please see a list of commands and
the instruction manual of the EJ-50U.
1.Boot up the terminal software on the PC, press
the FUNC key and press the H/L key while the
[F] icon is on. [TNC] lights up on the display
and the unit enters Geolocating communication
mode.
2.The initial screen of the TNC appears on the
PC.
3.Set communication speed of the packets from
the command mode (cmd:).
[Example cmd: HB 1200 or 9600]
4.Register the call sign of...](http://img.usermanuals.tech/thumb/5670/81990/w64_alinco_dr620te-vhf-uhf-tranciever_manual_d-54.png "Page 55
52
Special Functions
APRS operation
For detailed information, please see a list of commands and
the instruction manual of the EJ-50U.
1.Boot up the terminal software on the PC, press
the FUNC key and press the H/L key while the
[F] icon is on. [TNC] lights up on the display
and the unit enters Geolocating communication
mode.
2.The initial screen of the TNC appears on the
PC.
3.Set communication speed of the packets from
the command mode (cmd:).
[Example cmd: HB 1200 or 9600]
4.Register the call sign of...")
![Page 56
53
Special Functions
TNC Clone
This feature enables setting changes required for APRS function without connecting to a PC.
Please use this feature when a setting change is desired while the APRS function is in operation.
Setting changes are available for the call sign of your station, communication speed and data trans-
mission 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...](http://img.usermanuals.tech/thumb/5670/81990/w64_alinco_dr620te-vhf-uhf-tranciever_manual_d-55.png "Page 56
53
Special Functions
TNC Clone
This feature enables setting changes required for APRS function without connecting to a PC.
Please use this feature when a setting change is desired while the APRS function is in operation.
Setting changes are available for the call sign of your station, communication speed and data trans-
mission 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...")
58 Maintenance / Reference Problem Packet communication does not function. APRS does not function. The unit does not enter V-V/U-U mode. Possible Causes a. TNC is not connected or set properly. b. The unit is not in the packet mode. c. The squelch is open. d. The data transmission speed is not configured. e. A PC cable other than the straight type is used. a. The unit is not in the packet mode. b. The unit is not configured for automatic transmission. c. The squelch is open. d. The GPS receiver is not geolocating. Either the MAIN or SUB side is in memory mode. Potential Solutions a. Make sure the connections and configurations are properly set. b. Switch to the packet mode. c. Adjust the squelch level where it will open by reception of a signal. d. Adjust the speed by the PC. e. Use a straight type PC cable. a. Switch to the packet mode. b. Use the PC to set transmission time separation. c. Adjust the squelch level where it will open by a reception signal. d. Wait until the GPS receiver properly geolocates. Switch to VFO mode. IMPORTANT: When reception frequencies fall in any one of the formulas below, the unit may receive a non-modulated signal. This is due to the structure of frequencies of this unit and not a malfunction of the unit. • (Reception frequency on the MAIN side - 45.1MHz ) = Reception frequency on the SUB side - 43.4MHz (In u-u) • (FM reception frequency + 10.7MHz) x 4 = UHF reception frequency - 90.2MHz • (FM reception frequency + 10.7MHz) x 5 = UHF reception frequency • (UHF reception frequency - 45.1MHz) x 2 - (VHF reception frequency - 21.7MHz) x 6 = 45.1MHz • (UHF reception frequency - 45.1MHz) - (VHF reception frequency - 21.7MHz) x 3 = 21.7MHz • EMS-57 DTMF equipped microphone (This comes standard with the DR-620T) •EJ-50U TNC unit Optional accessories •EMS-53 Microphone (This comes standard with the DR-620E)
59 Maintenance / Reference Transmitter Block Diagram DR-620T, DR-620E GPS input PC input MIC Low-frequency amplifying limiter Lowpass filter NJM2902V PLL M64076AGP Buffer amplifier2SC5066 144M VCO 2SK508K2 Buffer amplifier2SC5066 430M VCO 2SK508K2 21.25 MHz Buffer amplifier2SC5226 Excitation amplifier 2SK3074 Excitation amplifier 2SK2975 Power amplifier RD70HVF1ANT DR-620T 144.000 - 147.995 MHz 430.000 - 449.995 MHz DR-620E 144.000 - 145.995 MHz 430.000 - 439.995 MHz TGT0210Q TMT0211Q EJ-50U
60 Maintenance / Reference General DR-620T, DR-620E Frequency coverage DR-620T87.500 - 107.995MHz (WFM RX) 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) DR-620E 87.500 - 107.995MHz (WFM RX) 144.000 - 145.995MHz (RX, TX) 430.000 - 439.995MHz (RX, TX) Operating mode 16K0F3E (Wide mode), 8K50F3E (Narrow mode) Frequency resolution 5, 8.33, 10, 12.5, 15, 20, 25, 30, 50, 100kHz Number of memory channels200 Antenna impedance 50Ω unbalanced Power requirement 13.8V DC +/-15% (11.7 to 15.8V) Ground method Negative ground Current drain Receive: 0.6A(Max.), 0.4A(Squelched) Transmit: 11.0A Operating temperature- 10 °C to 60 °C Frequency stability +/- 2.5ppm Dimensions 140(w) - 40(h) - 185(d) mm (w/o knobs)(5.51” x 1.57” x 7.28”) Weight Approx. 1.0kg (2.2lbs.) Transmitter Output power High:50W(VHF), 35W(UHF)Mid:10WLow:5W Modulation system Variable reactance frequency modulation Maximum frequency deviation+/- 5kHz (Wide mode) +/-2.5kHz (Narrow mode) Spurious emission -60dB Adjacent channel power-60dB Modulation Distortion Less than 3% Microphone impedance2kΩ Receiver Sensitivity -14dBu for 12dB SINAD Receiver circuitry Double conversion superheterodyne Intermediate frequency1st 21.7MHz 2nd 450kHz (VHF) 1st 45.1MHz 2nd 455kHz (UHF) Squelch sensitivity -18dBu Selectivity(-6dB/-60dB)12kHz/24kHz Spurious and image 70dB rejection ratio Audio output power 2.0W (8Ω,10%THD) Specification *All specifications are subject to change without notice or obligation.
VHF/UHF FM TRANSCEIVER DR-620T/E Instruction Manual Thank you for purchasing your new Alinco transceiver. This instruction manual contains important safety and operating instructions. Please read this manual carefully before using the product and keep it for future reference. Printed in Japan Copyright Alinco,Inc. 2002 PS0410 ALINCO,INC. Head Office: Shin-Dai building 9th Floor 2-6, 1-Chome, Dojimahama, Kita-ku, Osaka 530-0004, JAPAN Phone:+81-6-4797-2136 Fax:+81-6-4797-2157 E-mail: [email protected]