DUAL BAND FM TRANSCEIVER FT-7900R OPERATING MANUAL VERTEX STANDARD CO., LTD. 4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan VERTEX STANDARD US Headquarters 10900 Walker Street, Cypress, CA 90630, U.S.A. YAESU UK LTD. Unit 12, Sun Valley Business Park, Winnall Close Winchester, Hampshire, SO23 0LB, U.K. VERTEX STANDARD HK LTD. Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road, Kwun Tong, Kowloon, Hong Kong VERTEX STANDARD (AUSTRALIA) PTY., LTD.
Contents FT-7900R Quick Reference Guide ................... i Introduction ...................................................... 1 Specifications .................................................... 2 Accessories & Options ...................................... 3 Supplied Accessories ..................................... 3 Optional Accessories ...................................... 3 Installation ........................................................ 4 Preliminary Inspection .............................
INTRODUCTION The FT-7900R is a ruggedly-built, high quality Dual Band FM transceiver providing 50 Watts of power output on the 144 MHz Amateur band and 45 Watts on the 430 MHz Amateur band. The high power output of the FT-7900R is produced by its RD70HVF1 Power MOS FET amplifier, with a direct-flow heat sink and thermostatically-controlled cooling fan maintaining a safe temperature for the transceiver’s circuitry.
SPECIFICATIONS General Frequency Range: RX: 108.000 - 520.000 MHz, 700.000 - 999.990 MHz (Cellular Blocked) TX: 144.000 - 148.000 MHz or 144.000 - 146.000 MHz, 430.000 - 450.000 MHz or 430.000 - 440.000 MHz Channel Steps: 5/10/12.5/15/20/25/50/100 kHz Modes of Emission: F3E, F2D, F2A Antenna Impedance: 50 Ohms, unbalanced (Antenna Duplexer built-in) Frequency Stability: ±5 ppm @ 14 °F ~ +140 °F (–10 °C ~ +60 °C) Operating Temperature Range: –4 °F ~ +140 °F (–20 °C ~ +60 °C) Supply Voltage: 13.
ACCESSORIES & OPTIONS SUPPLIED ACCESSORIES Microphone MH-48A6J ...................................................................................................... 1 Mobile Mounting Bracket MMB-36 .................................................................................. 1 DC Power Cord w/Fuse (T9021715) .................................................................................. 1 Spare Fuse 15 A (Q0000081) ....................................................................................
INSTALLATION This chapter describes the installation procedure for integrating the FT-7900R into a typical amateur radio station. It is presumed that you possess technical knowledge and conceptual understanding consistent with your status as a licensed radio amateur. Please take some extra time to make certain that the important safety and technical requirements detailed in this chapter are followed closely.
INSTALLATION SAFETY INFORMATION The FT-7900R is an electrical apparatus, as well as a generator of RF (Radio Frequency) energy, and you should exercise all safety precautions as are appropriate for this type of device. These safety tips apply to any device installed in a well-designed amateur radio station. Never allow unsupervised children to play in the vicinity of your transceiver or antenna installation.
INSTALLATION ANTENNA CONSIDERATIONS The FT-7900R is designed for use with antennas presenting an impedance of near 50 Ohms at all operating frequencies. The antenna (or a 50 Ohm dummy load) should be connected whenever the transceiver is turned on, to avoid damage that could otherwise result if transmission occurs accidentally without an antenna. Ensure that your antenna is designed to handle 50 Watts of transmitter power.
INSTALLATION ANTENNA CONSIDERATIONS For reference, the chart below shows approximate loss figures for typically-available coaxial cables frequently used in VHF/UHF installations. Loss in dB per 30 m (100 feet) for Selected 50-Ohm Coaxial Cables (Assumes 50-Ohm Input/Output Terminations) CABLE TYPE RG-58A RG-58 Foam RG-213 RG-8 Foam Belden 9913 Times Microwave LMR-400 7/8” “Hardline” LOSS: 144 MHZ 6.5 4.7 3.0 2.0 1.5 1.5 0.7 LOSS: 430 MHZ > 10 8 5.9 3.7 2.9 2.6 1.
INSTALLATION MOBILE INSTALLATION The FT-7900R must only be installed in vehicles having a 13.8 Volt negative ground electrical system. Mount the transceiver where the display, controls, and microphone are easily accessible, using the supplied MMB-36 mounting bracket. The transceiver may be installed in almost any location, but should not be positioned near a heating vent nor anywhere where it might interfere with driving (either visually or mechanically).
INSTALLATION MOBILE INSTALLATION Mobile Power Connections To minimize voltage drop and avoid blowing the vehicle’s fuses, connect the supplied DC power cable directly to the battery terminals. Do not attempt to defeat or bypass the DC cable’s fuse - it is there to protect you, your transceiver, and your vehicle’s electrical system. Warning! Never apply AC power to the power cable of the FT-7900R, nor DC voltage greater than 15.8 Volts. When replacing the fuse, only use a 15-A fast-blow type.
INSTALLATION BASE STATION INSTALLATION The FT-7900R is ideal for base station use as well as in mobile installations. The FT-7900R is specifically designed to integrate into your station easily, using the information to follow as a reference. AC Power Supplies Operation of the FT-7900R from an AC line requires a power source capable of providing at least 10 Amps continuously at 13.8 Volts DC. The FP-1023 and FP-1030A AC Power Supplies are available from your Yaesu dealer to satisfy these requirements.
INSTALLATION BASE STATION INSTALLATION Note that 9600 bps packet transmit-deviation adjustment is very critical to successful operation, and can only be accomplished using a calibrated deviation meter (such as that found on an FM Service Monitor used in a communications service center). In most cases, the Packet Data Input level (set via a potentiometer inside the TNC) must be adjusted to provide a deviation of ±2.75 kHz (±0.25 kHz).
FRONT PANEL CONTROLS & SWITCHES VOL Knob This control adjusts the volume level of the receiver’s audio. Clockwise rotation increases the audio level. SQL Knob This control sets the threshold level at which received signals (or noise) will open the squelch. It should be advanced clockwise just to the point where the noise is silenced ” indicator on the display turns off), so as to provide the best sensitiv(and the “ ity to weak signals.
FRONT PANEL CONTROLS & SWITCHES [LOW(ACC)] Key Press this key momentarily to select the transmitter power output level (“LOW”, “MID2”, “MID1”, or “HIGH”). Press and hold in this key for 1/2 second to recall the Weather Broadcast Channels. You can program the alternate (press and hold in) function of this key to another function, if desired. See page 60 for details.
SIDE PANEL CONNECTION & KNOB : PTT : MIC : GND : +9V : SW 1(Key Control) : SW 2 (Key Contol) MIC Jack (Right Side) Connect the supplied microphone to this jack. Front Panel Release Knob (Left Side) Press this knob to unlock the front panel to detachable the front panel from the transceiver’s main body for remote-head operation (requires optional YSK-7800 Separation Kit).
REAR PANEL CONNECTIONS ANT Jack Connect your antenna here, using a type-M plug (for USA version) or type-N plug (for EXP version) and coaxial cable. Cooling Fan The cooling fan rotates during transmission, and for 30 seconds after the radio returns to the receive mode after transmitting. When the RF power amplifier’s heat sink reaches a moderately high temperature, the cooling fan will rotate automatically even if the radio is in the receive mode.
MH-48A6J MICROPHONE PTT Switch Press this switch to transmit, and release it to receive. Keypad These 16 keys generate DTMF tones during transmission. In the receive mode, the numeric (0 - 9) keys can be used for direct frequency entry and/or direct numeric recall of the Memory channels and the alphabet (A - D) keys can be used for controls the transceiver, as follow: [A] Key: Press this key momentarily to activate the Smart Search feature.
MH-48A6J MICROPHONE [P2] button: This button replicates the functions of the front panel [V/M(MW)] key. Press this button momentarily to switch the frequency control among the VFO, Memory System, and Home channel. Press and hold in this button for 1/2 second to transfer the VFO contents into a Memory register. [P3] button: This button replicates the functions of the front panel [TONE(REV)] key. Press this button momentarily to change the Tone Squelch mode: ENC (CTCSS Encoder), ENC.
MH-42B6JS MICROPHONE The optional MH-42B6JS is similar to the MH-48A6J, but the MH-42B6JS does not include a DTMF keypad and its illumination switch. PTT Switch Press this switch to transmit, and release it to receive. . [ACC]/[P]/[P1]/[P2] Buttons [ACC] button: This button replicates the functions of the front panel [BAND(SET)] key. While operating on the VFO mode, press this button momentarily to toggle the operating band as follows: 144 MHz 250 MHz 350 MHz 430 MHz 850 MHz 144 MHz ......
MH-42B6JS MICROPHONE . LOCK Switch This switch locks out the Microphone’s buttons (except for the PTT switch). [UP]/[DWN] Button Press (or hold in) either of these buttons to tune (or scan up or down) the operating frequency or through the memory channels. In many ways, these buttons emulate the function of the (rotary) DIAL knob. Notice: If you change the microphone from the MH-48A6J to the MH-42B6JS or MIC vice versa, change the setting of Menu #22 (MIC MIC). See page 73 for details.
BASIC OPERATION Hi! I’m R. F. Radio, and I’ll be helping you along as you learn the many features of the FT-7900R. I know you’re anxious to get on the air, but I encourage you to read the “Operation” section of this manual as thoroughly as possible, so you’ll get the most out of this fantastic new transceiver. Now. . .let’s get operating! TURNING THE TRANSCEIVER ON AND OFF 1. To turn the transceiver on, press and hold in the PWR ( ) switch for 1/2 second.
BASIC OPERATION FREQUENCY NAVIGATION 1) Tuning Dial Rotating the DIAL knob allows tuning in the pre-programmed steps established for the VFO frequency. Clockwise rotation of the DIAL knob causes the FT-7900R to be tuned toward a higher frequency, while counter-clockwise rotation will lower the operating frequency. Press the [MHz(PRI)] key momentarily, then rotate the DIAL knob, to change the frequency steps to 1 MHz per step.
BASIC OPERATION TRANSMISSION To transmit, simply close the PTT (Push To Talk) switch on the microphone when the frequency is clear. Hold the microphone approximately 25 mm (1”) from your mouth, and speak into the microphone in a normal voice level. When your transmission is complete, release the PTT switch; the transceiver will revert to the receive mode.
ADVANCED OPERATION LOCK FEATURE In order to prevent accidental frequency change or inadvertent transmission, the FT-7900R panel switches, microphone switches (except the PTT switch), and DIAL knob may be locked out. To activate the lock feature, press and hold in the [ (L)] key for 1/2 second. The “ ” icon will appear on the LCD. To disable the lock feature, press and hold in the [ key for 1/2 second again. (L)] You may change the lockout combinations by Menu #21 (LOCK). See page 73 for details.
ADVANCED OPERATION DISPLAY BRIGHTNESS The FT-7900R display illumination has been specially engineered to provide high visibility with minimal disruption of your “night vision” while you are driving. The brightness of the display is manually adjustable, using the following procedure: 1. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. DIMMER 2. Rotate the DIAL knob to select Menu #11 (DIMMER DIMMER). 3.
ADVANCED OPERATION CHANNEL STEP SELECTION The FT-7900R’s synthesizer provides the option of utilizing channel steps of 5/10/12.5/15/ 20/25/50/100 kHz per step, as well as an automatic step selection based on the current operating frequency (“AUTO”), any number of which may be important to your operating requirements. The FT-7900R is set up at the factory in the “AUTO” configuration, which probably is satisfactory for most operation.
REPEATER OPERATION Repeater stations, usually located on mountaintops or other high locations, provide a dramatic extension of the communication range for low-powered hand-held or mobile transceivers. The FT-7900R includes a number of features which make repeater operation simple and enjoyable. REPEATER SHIFTS Your FT-7900R has been configured, at the factory, for the repeater shifts customary in your country. While the 144 MHz shift will be 600 kHz; on 70 cm, the shift may be 1.6 MHz, 7.
REPEATER OPERATION MANUAL REPEATER SHIFT ACTIVATION If the ARS feature has been disabled, or if you need to set a repeater shift direction other than that established by the ARS, you may set the direction of the repeater shift manually. To do this: 1. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. RPT.MOD 2. Rotate the DIAL knob to select Menu #33 (RPT.MOD RPT.MOD). 3. Press the [BAND(SET)] key momentarily, then rotate RPT.– the DIAL knob to select the desired shift among “RPT.
CTCSS/DCS OPERATION CTCSS OPERATION Many repeater systems require that a very-low-frequency audio tone be superimposed on your FM carrier in order to activate the repeater. This helps prevent false activation of the repeater by radar or spurious signals from other transmitters. This tone system, called “CTCSS” (Continuous Tone Coded Squelch System), is included in your FT-7900R, and is very easy to activate. CTCSS setup involves two actions: setting the Tone Mode and then setting of the Tone Frequency.
CTCSS/DCS OPERATION CTCSS OPERATION the [BAND(SET)] key momentarily to save the new setting, then press and hold in the [BAND(SET)] key for 1/2 second to exit to normal operation. Your repeater may or may not re-transmit a CTCSS tone - some systems just use CTCSS to control access to the repeater, but don’t pass it along when transmitting.
CTCSS/DCS OPERATION TONE SEARCH SCANNING In operating situations where you don’t know the CTCSS or DCS tone being used by another station or stations, you can command the radio to listen to the incoming signal and scan in search of the tone being used. Two things must be remembered in this regard: You must be sure that your repeater uses the same tone type (CTCSS vs. DCS).
CTCSS/DCS OPERATION SPLIT TONE OPERATION The FT-7900R can be operated in a Split Tone configuration via the Set mode. 1. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. SPLIT 2. Rotate the DIAL knob to select Menu #41 (SPLIT SPLIT). 3. Press the [BAND(SET)] key momentarily, then rotate ON the DIAL knob to select “ON ON” (to enable the Split Tone feature). 4.
MEMORY OPERATION The FT-7900R provides a wide variety of memory system resources. These include: “Regular” Memory Channels, which includes: 000 999 1000 “Standard” memory channels, numbered “000 000” through “999 999.” 5 Home channels, providing storage and quick recall of one prime frequency on each operating band. 50 sets of band-edge memories also known as “Programmable Memory Scan” chanL1 U1 L50 U50 U1” through “L50 L50/U50 U50.
MEMORY OPERATION REGULAR MEMORY CHANNEL OPERATION Memory Storage 1. Select the desired frequency, while operating in the VFO mode. Be sure set up any desired CTCSS or DCS tones, as well as any desired repeater offset. The power level may be also be set at this time, if you wish to store it. 2. Press and hold in the [V/M(MW)] key for 1/2 second. A memory number will appear (blinking) on the display. 3.
MEMORY OPERATION REGULAR MEMORY CHANNEL OPERATION Storing Independent Transmit Frequencies (“Odd Splits”) 1. Store the receiving frequency using the method already described. 2. Turn to the desired transmit frequency, then press and hold in the [V/M(MW)] key for 1/2 second. 3. Within ten seconds of pressing the [V/M(MW)] key, use the DIAL knob or microphone’s [UP]/[DWN] buttons to select the same memory channel number as used in step 1 above. 4.
MEMORY OPERATION REGULAR MEMORY CHANNEL OPERATION Memory Recall 1. While operating in the VFO mode, press the [V/M(MW)] key momentarily to enter the Memory mode. 2. Rotate the DIAL knob to select the desired channel. If you press the [MHz(PRI)] key momentarily, then rotate the DIAL knob, you’ll be able to scroll through the memory channels at a rate of 10 channels per click of the DIAL. 3.
MEMORY OPERATION REGULAR MEMORY CHANNEL OPERATION Deleting Memories 1”), there frequently With 1000 “Regular” memories available (except memory channel “1 are situations where you may desire to delete certain memorized frequencies. The procedure for deleting a channel is quite simple: 1. Press the [V/M(MW)] key, if needed, to enter the Memory mode. 2. Press and hold in the [V/M(MW)] key for 1/2 second, then rotate the DIAL knob to select 1” may not be deleted. the memory channel to be deleted.
MEMORY OPERATION REGULAR MEMORY CHANNEL OPERATION 5. 6. 7. 8. store, the press the [BAND(SET)] key momentarily to move on to the next character. Letters, numbers, and symbols are available for storage. Again rotate the DIAL knob to select the desired letter, number, or symbol, then press the [BAND(SET)] key momentarily to move on to the next character’s slot.
MEMORY OPERATION REGULAR MEMORY CHANNEL OPERATION Memory Bank Operation Memory Bank Assignment U1 1. Recall the memory channel to be assigned to a Memory Bank. Memory channels L1 L1/U1 U50 (band/scanning limit memories) may not be assigned to a Memory Bank. ~ L50 L50/U50 2. Press and hold in the [SCAN(SEL)] key for 1/2 second, then rotate the DIAL knob to select the Memory Bank you want as the Memory Bank for this channel BANK1 BANK20 (“BANK1 BANK1” ~ “BANK20 BANK20” ).
MEMORY OPERATION REGULAR MEMORY CHANNEL OPERATION Memory Bank Recall 1. Set the radio to the Memory mode by pressing the [V/M(MW)] key, if necessary. 2. Press and hold in the [SCAN(SEL)] key for 1/2 second, then rotate the DIAL knob to select the Memory BANK 1 BANK20 Bank (“BANK 1” ~ “BANK20 BANK20”). [ ( 3. Press the BAND SET)] key momentarily to lock in the selected Memory Bank. 4. In the Memory Bank mode of operation, you can only select memory channels within the current Memory Bank. 5.
MEMORY OPERATION HYPER MEMORY CHANNEL OPERATION The FT-7900R usually stores, into memory, the operating frequency and some aspects of operating status (such as VFO scan, CTCSS/DCS data, repeater shift, power level etc.). However, the “Hyper Memory” Mode allows you to store the total current configuration of the radio into a special “Hyper” memory bank. Hyper Memory Storage 1. Set up the transceiver according to the desired configuration. 2.
MEMORY OPERATION WEATHER BROADCAST CHANNEL OPERATION The VHF Weather Broadcast Station Memory Channel Bank has been pre-programmed at the factory, for quick selection of NOAA weather information stations. 1. Press and hold in the [LOW(ACC)] key for 1/2 second to recall the Weather Broadcast Station Memory Channel Bank. 2. Rotate the DIAL knob to select the desired Weather Broadcast channel. 3. If you wish to scan this bank to search for louder CH FREQUENCY CH stations, just press the PTT switch.
SCANNING The FT-7900R allows you to scan just the memory channels, the entire operating band, or a portion of that band. It will halt on signals encountered, so you can talk to the station(s) on that frequency, if you like. Scanning operation is basically the same in each of the above modes. Before you begin, take a moment to select the way in which you would like the scanner to resume scanning after it halts on a signal.
SCANNING VFO SCANNING This mode allows you to scan the entire current operating band. 1. Select the VFO mode by pressing the [V/M(MW)] key, if necessary. 2. Press and hold in the [SCAN(SEL)] key for 1/2 second, then rotate the DIAL knob to select the bandwidth for the VFO scanner. Available selections are ±1 MHz, ±2 MHz, ±5 MHz, ALL, PMS-X, and BAND. ALL ALL: The scanner will sweep all frequencies between 108 - 520 MHz and 700 -999.990 MHz.
SCANNING MEMORY SCANNING Memory scanning is similarly easy to initiate: 1. Set the radio to the Memory mode by pressing the [V/M(MW)] key, if necessary. 2. Press the [SCAN(SEL)] key to initiate scanning. 3. As with VFO scanning, the scanner will halt on any signal encountered that is strong enough to open the squelch; it will then resume scanning according to the Scan-Resume mode set previously. 4. To cancel scanning, press the [SCAN(SEL)] key again (or press the microphone’s PTT key).
SCANNING MEMORY SCANNING Preferential Memory Scan The FT-7900R also allows you to set up a “Preferential Scan List” of channels which you can “flag” within the memory system. These channels are designated by a “W” icon when you have selected them, one by one, for the Preferential Scan List. When you initiate memory scanning, beginning on a channel with the “W” icon appended, only those channels bearing the “W” icon will be scanned.
SCANNING MEMORY SCANNING Memory Bank Scan When the Memory Bank feature is engaged, the scanner sweeps only memory channels in the current Memory Bank. However, if the Memory Bank Link Scan feature is enabled, you may sweep the memory channels in several Memory Banks which you have selected. To enable the Memory Bank Link Scan feature: 1. Set the radio to the Memory mode by pressing the [V/M(MW)] key, if necessary. 2.
SCANNING PROGRAMMABLE (BAND LIMIT) MEMORY SCAN (PMS) This feature allows you to set sub-band limits for either scanning or manual VFO operation. For example, you might with to set up a limit (in North America) of 144.300 MHz to 148.000 MHz so as to prevent encroachment into the SSB/CW “Weak Signal” portion of the band below 144.300 MHz. Here’s how to do this: 1. Set the radio to the VFO mode by pressing the [V/M(MW)] key, if necessary. L1 (the 2. Using the techniques learned earlier, store 144.
SCANNING “PRIORITY CHANNEL” SCANNING (DUAL WATCH) The FT-7900R’s scanning features include a two-channel scanning capability which allows you to operate on a VFO, Memory channel, Home channel, or Weather Broadcast Channel, while periodically checking a user-defined “Priority” Memory Channel for activity.
SCANNING “PRIORITY CHANNEL” SCANNING (DUAL WATCH) WX Priority 1. Recall the memory channel you wish to use as the “Priority” frequency. 2. Now set the FT-7900R for operation on a WX channel by pressing and holding in the [LOW(ACC)] key for 1/2 second. 3. Press and hold in the [MHz(PRI)] key for 1/2 second to activate the WX Priority mode. The display will remain on the WX channel frequency, but every five seconds the FT7900R will check the Priority Channel (memory channel) for activity. 4.
SMART SEARCH The Smart Search feature allows you to load frequencies automatically according to where activity is encountered by your radio.
SMART SEARCH Activating the Smart Search 1. Set the radio to the VFO mode by pressing the [V/M(MW)] key, if necessary. 2. Press the [S.SCH(ARTS)] key momentarily to begin the Smart Search scanning. 3. As active channels are detected, you will observe the number of “loaded” channels increasing in the regular memory channel window. 4. Depending on the mode you set for Smart Search operation (“SINGLE” or “CONT”), the Smart Search scan will eventually terminate, and the LCD will revert to C”.
ARTS™: AUTO RANGE TRANSPONDER SYSTEM The ARTS feature uses DCS signaling to inform both parties when you and another ARTSequipped station are within communications range. This may be particularly useful during Search-and Rescue situations, where is important to stay in contact with other members of your group. Both stations must set up their DCS codes to the same code number, then activate their ARTS feature using the command appropriate for their radio. Alert ringers may be activated, if desired.
ARTS™: AUTO RANGE TRANSPONDER SYSTEM ARTS Polling Time Options The ARTS feature may be programmed to poll every 25 seconds (default value) or 15 seconds. The default value provides maximum battery conservation, because the polling signal is sent out less frequently. To change the polling interval: 1. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. AR INT 2. Rotate the DIAL knob to select Menu #3 (AR INT). 3.
ARTS™: AUTO RANGE TRANSPONDER SYSTEM CW Identifier Setup The ARTS feature includes a CW identifier, as discussed previously. Every ten minutes during ARTS operation, the radio can be instructed to send “DE (your callsign) K” if this feature is enabled. The callsign field may contain up to 6 characters. Here’s how to program the CW Identifier: 1. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. CW WRT 2. Rotate the DIAL knob to select Menu #8 (CW WRT). 3.
NOTE FT-7900R OPERATING MANUAL 55
DTMF AUTODIALER OPERATION Sixteen DTMF Autodialer memories are available on the FT-7900R. These DTMF Autodialer memories can store up to 16 digits of a telephone number for repeater autopatch or other uses. To load DTMF Autodialer memories, use following procedure: 1. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. DT WRT 2. Rotate the DIAL knob to select Menu #14 (DT WRT). 3.
DTMF AUTODIALER OPERATION To transmit the memorized telephone number, use the following procedure: 1. Press the PTT switch. 2. While still holding the PTT switch in, press the microphone’s [UP]/[DWN] key to select the DTMF Autodialer memory channel to be transmitted then press the [BAND(SET)] key momentarily to transmit the tone string. Once you have pressed the [BAND(SET)] key in the above step, you can release the PTT switch, as the Autodialer will transmit the whole DTMF string automatically.
INTERNET CONNECTION FEATURE The FT-7900R can be used to access a repeater or base station which is configured to provide access to the Vertex Standard WiRESTM (Wide-Coverage Internet Repeater Enhancement System) operating in the “SRG” (“Sister Radio Group”) mode. 1. Press the [ (L )] key momentarily to activate the WiRESTM access capability. The “ ” icon will appear on the display. 2. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. INT CD 3.
INTERNET CONNECTION FEATURE operation. 4. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode again, then rotate the DIAL knob to select Menu #18 (II NET NET). 5. Press the [BAND(SET)] key momentarily, then rotate INT.MEM INT.MEM” (to enable the DIAL knob to set this Item to “INT.MEM the alternative Internet Link, and disable the WiRESTM SRG access option). 6.
MISCELLANEOUS SETTINGS TIME-OUT TIMER The “Time-Out Timer” (TOT) feature is designed to force the transceiver into the “receive” mode after a preset time period of continuous transmission (the default is 6 minutes). This feature prevents your transceiver from transmitting a “dead carrier” for a long period of time in the event that the microphone PTT switch is accidentally locked in the “TX” condition.
MISCELLANEOUS SETTINGS AUTOMATIC POWER-OFF When APO is activated, the “ ” icon will appear on the LCD. If there is no action by you within the time interval programmed, the “ ” icon blinks and a ringer sounds 3 minutes before the APO shut-down time; three minutes thereafter, the microprocessor will shut down the radio automatically. Just press and hold in the PWR ( after an APO shutdown, as usual.
MISCELLANEOUS SETTINGS PROGRAMMING THE KEY ASSIGNMENTS Default FT-7900R functions have been assigned to “alternate” (press and hold in) function of the front panel’s [LOW(ACC)] key, as well as the Microphone’s [P1]/[P2]/[P3]/[P4] buttons’ functions (for the MH-48A6J; [ACC]/[P]/[P1]/[P2] buttons for MH-42B6JS) at the factory. These may be changed by the user, if you wish to utilize another function on one of these keys. To program the function assigned to a key: 1.
MISCELLANEOUS SETTINGS PROGRAMMING THE KEY ASSIGNMENTS For Menu #27 PRG PNL Function < WX > < REV > < RPTR > < SQ.OF > < LOCK > < DIM > Press and hold the [LOW(ACC)] key Recall the Weather Broadcast Channels. Reverses the transmit and receive frequencies during split-frequency operation. Selects Repeater Shift direction. Disable the noise squelch action, allowing you to hear very weak signals near the background noise level. Selects the Key locking schemes.
MISCELLANEOUS SETTINGS DCS CODE INVERSION The DCS system was first introduced in the commercial LMR (Land Mobile Radio) service, where it is now in widespread use. DCS is sometime referred to by its different proprietary names, such as DPL® (Digital Private Line®, a registered trademark of Motorola, Inc.). DCS uses a codeword consisting of a 23-bit frame, transmitted (subaudible) at a data rate of 134.4 bps (bit/sec).
RESET PROCEDURE In the event of erratic operation of the transceiver, it is possible that data on the microprocessor may have become corrupted. While this is a highly unusual situation, the only path ro recovery may involve resetting of the microprocessor. Here’s how to do this: 1. Turn the radio off. 2. Press and hold in the [MHz(PRI)] key while turning the radio on. 3. Rotate the DIAL knob to select the resetting menu: F-1 SETRST SETRST: Resets the Set (Menu) mode settings to their factory defaults.
CLONING You can transfer all data stored in one FT-7900R to another FT-7900R by utilizing the handy “Cloning” feature. This requires a user-constructed Cloning cable which connects the DATA jacks on the two transceivers, as shown below. To clone from one transceiver to another, use the following procedure: 1. Insert the Cloning Cable into the DATA jack of each transceiver. 2. Turn both transceivers off, then press and hold in the [MHz(PRI)] key on each radio while turning the power on again. F-7 CLONE 3.
MENU (“SET”) MODE The FT-7900R Set (Menu) mode, already described in parts of many previous chapters, is easy to activate and set. It may be used for configuration of a wide variety of transceiver parameters, some of which have not been detailed previously. Use the following procedure to activate the Set (Menu) mode: 1. Press and hold in the [BAND(SET)] key for 1/2 second to enter the Set mode. 2. Rotate the DIAL knob to select the Menu Item to be adjusted. 3.
MENU (“SET”) MODE Item # Menu Item Available Values (Default: Bold Itaric) Function 1 2 3 4 5 6 7 8 9 10 11 12 APO AR BEP AR INT ARS BEEP CLK.SFT CWID CW WRT DCS.COD DCS.N/R DIMMER DT DLY Selects the Automatic Power Off time (time before power goes off). Selects the ARTS beep mode. Selects the Polling Interval during ARTS operation. Activates/deactivates the Automatic Repeater Shift feature. Enables/disables the beeper. Shifting of CPU clock frequency.
MENU (“SET”) MODE REPEATER SETTING SET MODE ITEM AVAILABLE VALUES (DEFAULT) CTCSS/DCS/DTMF SETTING SET MODE ITEM AVAILABLE VALUES (DEFAULT) Activates/deactivates the Automatic Repeater Shift feature. Sets the Repeater Shift Direction. Sets the magnitude of the Repeater Shift. Setting the DCS code. Selects “Normal” or “Inverted” DCS coding. Setting of the DTMF Autodialer Delay Time. Setting of the DTMF Autodialer Sending Speed. Loading of the DTMF Autodialer Memories.
MENU (“SET”) MODE Menu #1 [APO] Function: Selects the Automatic Power Off time (time before power goes off). Available Values: OFF/0.5 H - 12.0 H in 0.5 hour multiples. Default: OFF (Disables the APO feature) Menu #2 [AR BEP] Function: Selects the ARTS beep mode. Available Values: INRANG/ALWAYS/OFF Default: INRANG INRANG: Activates the ARTS feature; a high tone beep will sound when the transceiver first detects that you are within range, and a low beep will sound when the other station goes out of range.
MENU (“SET”) MODE Menu #7 [CWID] Function: Enables/disables the CW identifier during ARTS operation. Available Values: TX ON/TX OFF Default: TX OFF Menu #8 [CW WRT] Function: Stores your callsign into the CW identifier. Up to six characters may be stored. See page 54 for details. Menu #9 [DCS.COD] Function: Setting the DCS code. Available Values: 104 Standard DCS codes. Default: DCS.023 Menu #10 [DCS.N/R] Function: Selects “Normal” or “Inverted” DCS coding.
MENU (“SET”) MODE Menu #16 [HM/REV] Function: Selects the alternate function (press and hold in) of the [TONE(HM/RV)] key and primary function (press momentarily) of the [V/M(MW)] key. Available Values: REV/HOME Default: REV SELECTION REV HOME Primary function of the [V/M(MW)] key Press the [V/M(MW)] key momentarily to switch the frequency control among the VFO, Memory System, and Home channel. Press the [V/M(MW)] key momentarily to switch the frequency control between the VFO and Memory System.
MENU (“SET”) MODE Menu #20 [INET M] Function: Selects the Access Number (DTMF code) for non-WiRESTM Internet Link System access. Available Values: d- 1 ~ d-16 Default: d- 1 Menu #21 [LOCK] Function: Selects the Control Locking lockout combination. Available Values: LK KEY/LK DIAL/LK K+D/LK PTT/LK P+K/LK P+D/LK ALL Default: LK ALL LK KEY: The front panel keys and microphone buttons are locked out (except for the PTT switch). LK DIAL: Only the front panel DIAL knob is locked out.
MENU (“SET”) MODE Menu #27 [PRG.PNL] Function: Programming the alternate (press and hold in) function of the front panel’s [LOW(ACC)] key. See page 62 for details. Available Values: WX/REV/RPTR/SQ.OF/LOCK/DIM Default: WX Menu #28 [PRG P1 (PRG ACC)] Function: Programming the microphone’s [P1]/[ACC] button assignment. See page 62 for details. Available Values: SQ.OF/TCAL/SSCH/ARTS/TN.
MENU (“SET”) MODE Menu #34 [PRI.RVT] Function: Enables/Disables the Priority Revert feature. Available Values: RVT.ON/RVT.OFF Default: RVT.OFF Menu #35 [RX MOD] Function: Selects the Receiving mode. Available Values: AUTO/FM/AM Default: AUTO (Mode automatically changes according to operating frequency.) Menu #36 [S SRCH] Function: Selects the Smart Search Sweep mode.
MENU (“SET”) MODE Menu #39 [SHIFT] Function: Sets the magnitude of the Repeater Shift. Available Values: 0.00 - 99.95 MHz (50 kHz step) Default: Depends on the band of operation. Menu #40 [SKIP] Function: Selects what action will happen on a “flagged” Memory Channel Available Values: OFF/SKIP/ONLY Default: OFF OFF: All memory channels will be scanned (the “flag” will be ignored). SKIP: The scanner will “skip” the flagged (“SKIP”) channels during scanning.
MENU (“SET”) MODE Menu #43 [STEP] Function: Sets the Synthesizer steps. Available Values: AUTO/5.0 k/10.0 k/12.5 k/15.0 k/20.0 k/25.0 k/50.0 k/100 k Default: Depends on the band of operation. Note: 5 kHz and 15 kHz steps are not available for use on above 700 MHz. Menu #44 [TN FRQ] Function: Sets the CTCSS Tone Frequency. Available Values: 50 Standard CTCSS Tones Default: 100 Hz Note: This Menu Item can be set independently for each band, and independently in each memory.
“AUTO” MODE PRESET OPERATING PARAMETERS USA Version FREQENCY RANGE (MHZ) 108.000 - 137.000 137.000 - 144.000 144.000 - 148.000 148.000 - 156.000 156.000 - 157.450 157.450 - 160.600 160.600 - 160.975 160.975 - 161.500 161.500 - 162.900 162.900 - 174.000 174.000 - 222.000 222.000 - 225.000 225.000 - 300.000 300.000 - 336.000 336.000 - 420.000 420.000 - 450.000 450.000 - 470.000 470.000 - 520.000 700.000 - 800.000 803.000 - 999.
FT-7900R QUICK REFERENCE GUIDE VOL KNOB Adjusts the audio volume level. SQL KNOB Adjusts to the point where the background noise is muted. LOCK SWITCH Press and hold for 1/2 second to lock all key functions except the VOL, SQL knobs and PTT switch. POWER SWITCH Press and hold for 1/2 second. BAND SWITCH Selects the operating Band. TRANSMISSION SWITCH Speak into the microphone in a normal voice level while pressing this switch. FREQUENCY DIAL KNOB Selects the operating Frequency.
FT-7900R QUICK REFERENCE GUIDE KEY OVERVIEW KEY PRESS KEY BRIEFLY Allows tuning in 1-MHz steps on the VFO frequency, or tuning in 10 channel steps on the memory channels. Changes the Tone Squelch mode. Selects the transmitter power output level. ~ Toggles the operating band while operating on the VFO mode. In the Memory mode, activates the “Memory Tune” function. Switches the frequency control among the VFO, Memory System, and Home channel. Activates the Scanner.
1. Changes or modifications to this device not expressly approved by VERTEX STANDARD could void the user’s authorization to operate this device. 2. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions; (1) This device may not cause harmful interference, and (2) this device must accept any interference including received, interference that may cause undesired operation. 3.
Copyright 2009 VERTEX STANDARD CO., LTD. All rights reserved. No portion of this manual may be reproduced without the permission of VERTEX STANDARD CO., LTD.
