Yaesu Musen 03770X30 HF/VHF/UHF TRANSCEIVER User Manual Operating Manual 4
Yaesu Musen Co., Ltd. HF/VHF/UHF TRANSCEIVER Operating Manual 4
Contents
Operating Manual-4
Transmitter Operation (TON) key to activate the CTCSS tone encoder, which provides a sub4. Press the (TON) key will activate the CTCSS audible repeater access tone. One press of the tone encoder. In this situation, you will observe the “ ” indicator on the display. If (TON) key repeatedly, you will observe “ ” (CTCSS Encode/ you press the Decode), followed by “ ” (Digital Coded Squelch, Encode/Decode). One additional press will disable all repeater-access tone systems. See the next section for a discussion of DCS operation. 5. If the default repeater access tone are not appropriate for your area, it also may be set independently for each band. To change the repeater access tone: (TON) key for one second. This instantly recalls Menu #48 Press and hold the (TONE FREQ). knob to select the desired CTCSS frequency. Rotate the When done, press and hold the key for one second so save the new setting and exit to normal operation. 6. Set the transceiver’s receiver to the repeater output (downlink) frequency. 7. Close the PTT switch and speak into the microphone. You will observe that the trans(RPT) key. mitted frequency has shifted according to the setting of the 8. Release the PTT switch to return to the Receive mode. 9. With repeater shift activated, you can temporarily reverse the transmit and receive (REV) key. The “ ” icon will blink while “Reverse” frequencies by pressing the (REV) key again to revert to the “Normal” shift direcshift is activated. Press the tion. 10. When you are finished with repeater operation, you may wish to set the repeater shift (RPT) key, and disable the CTCSS or DCS tone by to simplex by pressing the (TON) key. pressing the 11. On many transceiver versions, the Automatic Repeater Shift (ARS) feature is enabled at the factory. This feature automatically activates the appropriate repeater shift when you are operating inside the designated 144 MHz or 430 MHz FM repeater sub-bands in your country. If you wish to change the settings for the ARS, use Menu #01 (144 ARS) or Menu #02 (430 ARS) (see page 58). If your local repeaters need a 1750-Hz burst tone for access (typically in Europe), press and hold in the front panel’s key to transmit the burst tone. 32 FT-818 Operating Manual Transmitter Operation Tone Search Scanning In operating situations where you don’t know the CTCSS tone being used by another station, you can command the radio to listen to the incoming signal and scan in search of the tone being used. To scan for the CTCSS tone in use: 1. Press the key momentarily, then rotate the knob, as needed, until Operating Function Row 12 [TCH, DCH] appears on the display. (TCH) key to activate CTCSS Encoder/Decoder; (the “ 2. Press the ” icon will appear on the display) and start scanning for the incoming CTCSS tone. 3. When the radio detects the correct tone, it will halt on that tone, and audio will be allowed to pass. (TCH) key for one second; the CTCSS tone detected 4. Press and hold in the will be stored as the “current” tone, so it may be used for memory storage purposes, and you may now exit to normal operation. FT-818 Operating Manual 33 Transmitter Operation DCS Operation Another form of tone access control is Digital Code Squelch, or DCS. It is a newer, more advanced tone system that is less susceptible to false triggering than CTCSS. A DCS Encoder/Decoder is built into your transceiver, and operation is very similar to that described above for CTCSS. 1. Set the desired DCS code via Menu #23 (DCS CODE). 2. Press the key momentarily, then rotate the knob, as needed, until Operating Function Row 4 [RPT, REV, TON] appears on the display. (TON) key three times to activate the DCS Encoder/Decoder (the “ 3. Press the ” icon will appear on the display). The receiver will remain muted until a matching DCS code is received on an incoming signal. (TON) key once to cancel DCS operation (the “ 4. Press the ” icon will disappear). DSC Search Scanning In operating situations where you don’t know the DCS code being used by another station, you can command the radio to listen to the incoming signal and scan in search of the code being used. To scan for the DCS code in use: 1. Press the key momentarily, then rotate the knob, as needed, until Operating Function Row 12 [TCH, DCH] appears on the display. (DCH) key to activate DCS Encoder/Decoder; (the “ 2. Press the ” icon will appear on the display) and start scanning for the incoming DCS code. 3. When the radio detects the correct code, it will halt on that code, and audio will be allowed to pass. 4. Press and hold in the (DCH) key for one second; the DCS code detected will be stored as the “current” code, so it may be used for memory storage purposes, and you may now exit to normal operation. 34 FT-818 Operating Manual Transmitter Operation ARTSTM (Auto Range Transpond System) Operation The ARTSTM system uses DCS signaling to inform you when you and another ARTS™equipped station are within communications range. This can be especially valuable during search-and-rescue operations, as a base station can quickly use ARTS™ to alert a field unit that it is out of range; the field unit can then move to a better location to re-establish communications. 1. Press the key momentarily, then rotate the knob, as needed, until Operating Function Row 6 [SSM, SCH, ART] appears on the display. (ART) key to activate ARTS™ operation. 2. Press the 3. Your display will change to “out range” to indicate the beginning of ARTS™ operation. Every 25 seconds, your radio will transmit a “polling” call to the other station. When that station responds with its return ARTS™ polling signal, your display will change to “in range” to confirm reception of the response. (ART) key again (the “out range” or “in 4. To cancel ARTS operation, press the range” indication will disappear from the LCD). The ARTS™ feature offers a choice of beep options to alert you to the current status of ARTS™ operation. Use Menu #09 (ARTS BEEP) on page 59 to select the beep option that is best for your operating needs. CW Identifier Setup The ARTS™ feature includes a CW identifier. When it is activated, the radio will send “DE (your callsign) K” in Morse code every ten minutes during ARTS™ operation. To program the CW IDer, use Menu #31 (ID), as described on page 62. And to activate the CW IDer, use Menu #18 (CW ID). FT-818 Operating Manual 35 Transmitter Operation Digital Mode Operation (SSB-Based AFSK) The FT-818 provides extensive capability for digital mode operation on the HF, VHF, and UHF bands. The use of AFSK (Audio Frequency-Shifted Keying) configurations allows a wide variety of different communication modes to be utilized. The Menu provides for specific digital mode selections, which include custom BFO offsets to optimize the receive and transmit passbands for the mode selected. Before beginning Digital operation, you need to define which Digital mode will be utilized. To do this, use Menu #26 as follows (in this example, we will set up RTTY as the Digital mode): 1. 2. 3. 4. Press and hold in the key for one second to enter the Menu mode. Rotate the knob to select Menu #26 (DIG MODE). Rotate the knob to select “RTTY.” Press and hold in the key for one second to save the new setting and exit. Use this technique to set up any digital mode. RTTY (Radio TeleType) Operation The “RTTY” mode on the FT-818 is based on LSB-side carrier injection, in accordance with long-standing amateur practice. If you need USB-side injection for your application, see the “User” mode discussion below. 1. Connect your TNC (Terminal Node Controller) or terminal modem to the FT-818’s rear-panel DATA jack, per the illustration. 2. Press the key, as needed, to select the DIG mode (the “DIG” icon will appear on the display). Be certain to use the “TX Audio” line from your TNC, not an “FSK Key” line, for the transmit-data connection. 3. Press the key, as needed, to select the DIG mode (the “DIG” icon will appear on the display). You should now be able to tune around the band, and any RTTY signals heard should be capable of being decoded. ANT INPUT DC13.8V KEY DATA ACC PTT AFSK OUT AF IN GND DATA OUT PTT Pin Label DATA IN PTT DATA OUT 36 Note Maximum Input Lebel: 1.0 V pp Impedance: 10 kΩ Ground to Transmit Maximum Output Level: 300 mVpp Impedance: 10kΩ DATA IN GND FT-818 Operating Manual Transmitter Operation 4. If the optional YF-122C 500 Hz filter has been installed, it may be used for RTTY (NAR) work. Recall Operating Function Row 7 [IPO, ATT, NAR] then press the key to engage the narrow filter. 5. To set up the transmit side, be sure that the Meter is set to monitor ALC voltage. If key momentarily, then rotate the knob to select to select Opnot, press the (MTR) key so as to select erating Function Row 9 [PWR, MTR], then press the metering of ALC. 6. Press and hold in the key for 1/2 second to enter the Menu mode, then rotate the knob to select Menu #25 (DIG MIC). 7. Following the instructions for your TNC’s software, activate the transmitter from the computer keyboard; this should cause the AFSK output from the TNC to be sent to the radio. While transmitting, view the ALC meter; a few “dots” of ALC indication should be observed. If not, rotate the knob to adjust the AFSK level. Press and hold in the key for one second to save the new AFSK level setting and return to normal operation. You are now ready for RTTY operation. Because RTTY is a continuous-duty transmission mode, try to keep your transmission short when running on battery power, so as to minimize current drain. PSK31 Operation Two dedicated PSK31 modes are available, one each for USB-side and LSB-side injection. For BPSK work, the injection does not matter, but for QPSK the two working stations must use the same sideband. Connect the FT-818 to your computer’s sound card or interface. Setup for PSK31 operation is basically identical to that previously described for RTTY operation. As before, use the “DIG” mode. However, in Menu #26, select “PSK31-L” (for LSB injection) or “PSK31-U” (for USB injection). As with RTTY, Menu #25 may be used to set the drive to the transmitter. And the YF-122C 500 Hz filter may also be utilized, as described previously. FT-818 Operating Manual 37 Transmitter Operation “USER” Defined Digital Modes Also provided in the FT-818 are two convenient “USER” Digital modes, one each providing USB- and LSB-side injection, which may be used for SSTV, Fax, Pactor, and other digital operating modes. Here is an example involving the configuration of the USER mode for RTTY with USBside injection (as opposed to LSB injection, used in the default “RTTY” mode): 1. Use Menu #26 to set the Digital mode to “USER-U.” 2. Press the key, as needed, to select the DIG mode (the “DIG” icon will appear on the display). 3. Now use Menu #27 to configure the transceiver’s passband response. Once in the Menu mode, rotate the knob to select Menu #27 (DIG SHIFT), and rotate the knob to set the desired BFO offset (depending on how your TNC’s tones are set up). For typical high-frequency tone use, a setting of about “+2100” will be a good starting point. 4. Finally, depending on how you wish the display to respond, you may program in a corresponding display shift, using Menu #24 (DIG DISP). Remember to press and hold in the key for one second when exiting the Menu mode. 5. The setup of the AFSK drive level is identical to that described previously for RTTY operation. The USER-L and USER-U Digital modes should allow you to operate on any SSBbased AFSK Digital mode. Note that the “PSK31” configurations will also work well for many Digital operating situations. 38 FT-818 Operating Manual Transmitter Operation Packet (1200/9600 bps FM) Operation The FT-818 is designed for operation on either 1200 bps or 9600 bps packet, and setup is similar to that described previously for SSB-based modes. A separate Data input adjustment is provided, allowing you to optimize the deviation on the FM Packet modes separately from the SSB-based Digital modes. The RX-Data output lines are fixed-level outputs, not affected by the setting of the AF Gain control. 1. Connect your TNC to the FT-818’s rear-panel DATA jack, per the illustration. Note that different connections are used for 1200 bps and 9600 bps Packet. 2. Use Menu #40 (PKT RATE) to select the desired Packet mode. Once you have entered the Menu and have selected Menu #40, rotate the knob to select either “1200” or “9600” (bps) as the Packet rate. 3. Press the key, as needed, to select the PKT mode (the “PKT” icon will appear on the display). 4. You are now set up for reception on Packet. If you are operating on 1200 bps, try now to connect to another station or node; you may well find that the drive level needs no further adjustment. 5. If you are having trouble connecting due to insufficient or excessive drive from the TNC to the FT-818, use Menu #39 (PKT MIC) to set the drive. Use your terminal software’s “test” protocol to send out test tones, and adjust the deviation by rotating the knob, which will vary the data input level to the FT-818’s modulator. Remember to press and hold in the key for one second when adjustments are completed, so as to save the new setting for Menu #39. The 9600 bps Packet deviation setting is very critical to successful operation, and it can only be accomplished using a calibrated deviation meter; the optimum setting is usually ±2.75 kHz (±0.25 kHz). For 1200 bps, the optimum level is much less critical, with the optimum deviation being between ±2.5 kHz and ±3.5 kHz. ANT INPUT DC13.8V KEY DATA ACC PTT DATA OUT DATA IN GND PTT DATA OUT 9600 bps DATA OUT 1200 bps SQL FT-818 Operating Manual DATA OUT (1200bps) PTT GND DATA IN Note Maximum Input Lebel: 40 mV pp @1200 bps 1.0 V pp @9600 bps Impedance: 10 kΩ Ground to Transmit Maximum Output Level: 500 mVpp Impedance: 10kΩ Maximum Output Level: 300 mVpp Impedance: 10kΩ SQL Open: +5 V SQL Clised: 0 V DATA OUT (9600bps) Pin Label DATA IN 39 Transmitter Operation AM Transmission The FT-818 utilizes low-level amplitude modulation of an early stage for transmission purposes. This capability is primarily provided for emergency use only, as low-power operation typically utilizes more efficient transmission/reception modes. The AM carrier level is preset to 1.5 Watts during alignment at the factory, and should not require further adjustment. It is important to remember that AM transmission requires that power must be distributed among the carrier and voice sidebands; therefore, if excessive carrier power is used, there will be insufficient power available for the information-carrying voice sidebands. The AM microphone gain is preset at the factory to a value which typically provides good audio. If you need to modify the microphone gain in the AM mode, use Menu #05 (AM MIC). See page 58 for details. Split Frequency Operation This transceiver provides convenient split-frequency operation, using the VFO-A and VFO-B, for DX working and other operating situations requiring unique split frequency pairs. The example below will describe a typical split-frequency DX situation on the 20-meter band, with a DX station transmitting on 14.025 MHz, listening 10 kHz higher in the band. 1. Set VFO-A to 14.035.00 MHz CW (DX station’s listening frequency). 2. Press the key momentarily, then rotate the knob, as needed, until Operating Function Row [A/B, A=B, SPL]. (A/B) key momentarily to select VFO-B. 3. Press the 4. Tune the VFO-B frequency to 14.025.00 MHz (DX station’s transmitting frequency). (SPL) key momentarily. The transceiver will now transmit using the 5. Press the VFO-A frequency, and will receive using the VFO-B frequency. The “ ” icon will appear on the display. 6. To listen to the pile-up calling the DX station (so as to align your frequency more (A/B) key to closely to that of the station being worked by the DX), press the reverse the VFOs. You will now be tuning in the vicinity of 14.035 MHz, and you can zero in on the DX station’s listening frequency by tuning in on the station in QSO (A/B) key again to return to reception on the DX station’s with the DX. Press the frequency. (SPL) key once more to cancel split operation; the “ ” icon will dis7. Press the appear from the display. 40 FT-818 Operating Manual
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