Quantun Electronics QM-790-U1 TWO-WAY MOBILE RADIO User Manual QM790 V01 E FCC
Quantun Electronics, LLC TWO-WAY MOBILE RADIO QM790 V01 E FCC
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![9Radio Overview Front Panel 12 345678 Figure 1 1. Volume Control Knob Turn the Volume Control Knob clockwise to increase the volume, or counter-clockwise to decrease the volume. 2. LCD Please refer to the “LCD Display” section for details. 3. Programmable Functions Key ([▲]/[▼]) The [▲]/[▼] keys are programmable with auxiliary functions by your dealer. Please refer to the “Programmable refer Functions Keys” section. 4. LED Indicator 5. Speaker 6. Power Switch 7. Programmable functions Keys ([P1]/[P2]/[P3]/[P4]) The [P1]/[P2]/[P3]/[P4] keys are programmable with auxiliary Functions by your dealer. Please refer to the “Programmable Functions Keys” section. 8. Microphone Jack Plug the microphone connector into this jack.](https://usermanual.wiki/Quantun-Electronics/QM-790-U1/User-Guide-1336489-Page-10.png)
![11Programmable Auxiliary Functions Your dealer may program the [P1]-[P4], [▲]/[▼] keys (long or short press) keys with one of the following auxiliary functions respectively. 1. Off 2. CH Up 3. CH Down 4. Zone Up 5. Zone Down 6. Monitor A 7. Monitor B 8. Monitor C 9. Monitor D 10. Display Frequency 11. Display Mode 12. User Selectable CTCSS/CDCSS(UST) 13. 2-Tone/MDC1200/DTMF Encode Select 14. TX Power Select 15. Scan 16. Scan Add/Delete 17. Reverse Frequency 18. Talk Around 19. Select Squelch Level 20. Home Channel 22. Scrambler 23. Voice Comp 24. Emergency Call](https://usermanual.wiki/Quantun-Electronics/QM-790-U1/User-Guide-1336489-Page-12.png)
![14Basic Operations Turn Radio On/Off Press the power switch to turn on the radio. press and hold down the power switch for about 1 second to turn off the radio. Adjust the Volume Turn the Volume Control Knob clockwise to increase the volume, or counter-clockwise to decrease the volume. During adjusting, please note that if the radio is programmed with CTCSS/CDCSS or2-Tone signalling squelch, noise will not be heard from local speaker even though you turn the volume control knob fully clockwise. Select Power Level If the current channel is programmed with high power by your dealer. the power output toggles between high and low upon each press the programmed Tx Power Select key. The“LO”icon is displayed on LCD while using low power. A higher level means you can reach a radio that is farther away. A lower power level saves battery and reduces the possibility of interference. Use the high power setting only when necessary Note: ● If the current channel is programmed with lower power press the Tx Power Select key prompts an error tone and the power level will not change. ● If you switch to low power on a channel that was set with high power, this configuration is done on all other channels that were set with high power. Select a Channel The [▲]/[▼], [F1]-[F4] function keys are programmable by your dealer to select a channel, The RX/TX frequency on each channel is set by your dealer. Press the [CH Up] key (programmable) to select a higher numbered channel; press the [CH Down] key (programmable) to select a lower numbered channel. Channel Annunciation If the feature is enabled by your dealer, the current channel number will be heard when you press the channel select key. Note: Please select the volume level as "1", when using an Easy-VOX earpiece accessory. Select a Zone The [▲]/[▼], [F1]-[F4] function keys are programmable by your dealer to select a zone.](https://usermanual.wiki/Quantun-Electronics/QM-790-U1/User-Guide-1336489-Page-15.png)
![15 Press the programmed [zone Up] key to select a higher numbered zone; press the programmed [Zone Down] key to select a lower numbered zone. Receive a Call If CTCSS/CDCSS, DTMF/2-Tone/MDC1200 is set on the current channel by your dealer, you can receive calls with matched signalling only, If CTCSS/CDCSS, DTMF/2-Tone/MDC1200 is not set, you can hear from all the users on the same channel. Send a Call 1. Hold down the [PTT] 2. Speak into the microphone. The red LED lights while calling. 3. Release the [PTT] to return to the receive mode. 4. When transmission ends, put the microphone on hook. BOT ID and EOT ID Your dealer may configure whether to transmit connect ID (BOT ID) and Disconnect ID (EOT ID), when connecting or disconnecting a repeater or telephone system. The following modes are programmable. 1. BOT ID occurs on each press of [PTT]. EOT ID occurs on each release of [PTT] 2. Press the [*] while holding down the [PTT], then BOT ID is transmitted. Pres the [#] while holding down the [PTT], then EOT ID is transmitted. VOX Operation When hands-free operation is desired, your radio can be activated by voice alone using the VOX feature when you speak through an accessory that is connected to your radio. z Connecting a Easy-VOX Microphone 1. Turn off your radio. 2. connect the VOX accessory to your handset microphone and turn the radio on. z Enabling or Disabling VOX To enable or disable VOX operation, press the preprogrammed VOX button Note: Pressing the PTT button disables VOX.](https://usermanual.wiki/Quantun-Electronics/QM-790-U1/User-Guide-1336489-Page-16.png)
![16Monitor If the monitor function is set by your dealer, press the programmed Monitor key while in receive mode to hear activities on the current channel. The Monitor key is programmable with one of the following four operating modes by your dealer. 1. Carrier Squelch- Momentary Hold down the [MONI] key to open CTCSS/CDCSS/2-Tone signalling squelch, Release to close the signalling squelch. 2. Carrier Squelch-Toggle Press the [MONI] key to open CTCSS/CDCSS/2 -Tone signalling squelch. Press again to close the signalling squelch. 3. Squelch Off-Momentary Hold down the [MONI] key to open carrier squelch; Release to close the carrier squelch. 4. Squelch Off - Toggle Press the [MONI] key to open carrier squelch. Press again to close the carrier squelch. Scan ■ Scan Type 1. Single Zone Scan Radio scans all the channels that added into the scan list on the current zone. 2. Multi Zone Scan Multiple zones that added into a multi scan list can be scanned. All channels within all the zones that added into the scan list can be scanned. ■ Scan Start 1. Add one or several non-priority channels into the scan list. 2. Press the programmed Channel Scan key to initiate scan from the current channel, and ascends through the channel numbers in scan list. The LCD displays the “SCAN” icon (“-SCAN-” indicates multi zone scan). ■ Scan Cease Scanning pauses or ceases upon the following: 1. Upon repress the programmed Channel Scan key, scanning ceases, and the radio exits the scan mode. 2. Activate the Monitor function. 3. Receives carrier that satisfy radio un-mute condition. ■ Scan Resume If scanning pauses on an active channel, the scanning will resume according to the scan resume mode. The scan resume mode is programmable by your dealer for Carrier operated scan or time operated scan.](https://usermanual.wiki/Quantun-Electronics/QM-790-U1/User-Guide-1336489-Page-17.png)
![171. Time Operated Scan Scanning remains on an active channel for a programmed time period (programmable by your dealer),once the timer expires, the radio will begin scanning other channels even if the active channel is still busy. 2. Carrier operated scan If carrier is detected during the scan sequence, scanning will remain on the active channel until here is on activity. ■ Dual Priority Scan If dual priority channels are programmed by your dealer, the radio still checks the dual priority channels for activity at configured intervals. While scanning pauses on a non-priority channel. If carrier is detected on a priority channel, the radio will immediately switch to the active priority channel. LCD displays the “p。” icon if the current channel is programmed as the Priority Channel 1. the “p.” icon if the cur-rent channel is programmed as Priority Channel 2, while the “p.” icon if the current channel is programmed as both the Priority Channel 1 and 2. ■ Scan Add/Delete If the Scan Add/Delete feature is enabled by your dealer, the current channel can be added/deleted to/from the scan list, as the following procedures. 1. Select a channel to be added/deleted in the non-scan mode. 2.The current channel toggles between Add/Delete status upon each press the programmed scan Add/Delete key. Note: Only channels that added into the scan list can be scanned. ■ Nuisance Channel Delete Temporarily deletes a specific channel from your scan list during the scan sequence. When scan pauses on an unwanted channel such as a noise channel, press the programmed Add/Del Scan key to temporarily deleted the channel from the scan list, then scanning reinitiates immediately. Note: the temporary delete is not memorized once radio exits from scan mode. ■ Revert Channel Upon pressing the [PTT] during scanning, the radio will pause scanning and switch to the Revert Channel to transmit. This feature is programmable by your dealer. ■ Off-Hook Scan If the feature is enabled by your dealer, radio scans no matter the microphone is in the off or on hook condition. Otherwise, microphone must be on hook for scanning. DTMF Call](https://usermanual.wiki/Quantun-Electronics/QM-790-U1/User-Guide-1336489-Page-18.png)
![18 ■ Manual Dial Press any key from the DTMF keypad of the microphone, while holding down the [PTT], to transmit the DTMF frequency, and the DTMF tone will be heard from the local speaker. Release the [PTT] to remain transmission for 2s (programmable by your dealer), press a numeric key within the 2s to continue transmission. ■ Keypad Auto[PTT] If the feature is enabled by your dealer, press numeric key to transmit DTMF frequency without pressing the [PTT]. ■ Store & Send When the feature enabled, enter a pre-stored DTMF number (up to 16 digits) in receive mode, then press the [PTT] on the microphone to initiate a call, simultaneously, the dialed DTMF number scrolls across the LCD, and the corresponding DTMF tone is heard. Note: ● If you dialed a wrong number or you want to cancel the dialing, you just simply press any key on the front panel other than the power switch to exit. ● The “D” character can be programmed by your dealer as a blank tone, that is, the “D” tone will not be heard while transmitting, but only a delay. The delay time of the “D” character is programmable bu your dealer. ■ DTMF Speed 6,8,10 or 15 digits per second is programmable by your dealer. The feature is designed to reduce false decode by providing a fixed interval time between digits Default: 10 digits per second. ■ Store DTMF Numbers Allows you to store a DTMF number (up to 16 digits) in each of the 32 Auto Dial memory (01~32) respectively, detailed as follows: 1. Press the [#] key on the microphone keypad, then the LCD displays “D-------”. 2. Enter the desired number (range from 0~9, A~F) via the microphone keypad. If you want to enterA,B,C,D,E,F, please enter 2.5.8.0, *,# respectively while holding down the [PTT]. 3. Press the [#] key, the “--” is displayed following the “D” character, indicating the location of the memory number. 4. Enter the desired memory number (01~32). 5. Press again the [#] key on the microphone keypad, then the entered number is stored into the corresponding memory. If you dialed a wrong number or you want to cancel the dialing, please press any key on the front panel other than the power switch to exit.](https://usermanual.wiki/Quantun-Electronics/QM-790-U1/User-Guide-1336489-Page-19.png)
![19 ■ Confirm the Stored DTMF Numbers 1. Press the [*] key on the microphone keypad, then the LCD displays “A--”. 2. Enter the memory number (01~32), the LCD displays the stored number or its alias. 3. Press any key other than the [PTT], the LCD resumes the initial display. ■ Auto Dial 1. Press the [*] key on the microphone keypad, then the LCD displays “A”. 2. Enter the memory number (01~32), the LCD displays the stored number or its alias. 3. Press the [PTT], then the number is transmitted. ■ Clear Stored DTMF Numbers 1. Press the [#] key on the microphone keypad, then the LCD display“D-----” 2. Press again the[#]key on the microphone keypad, then the LCD displays “Clear”. 3. Enter the memory number that to be cleared (01~32), To cancel this operation, please press any key other than 0~9. 4. Press the [#] key on the microphone keypad, then the stored number is cleared. ■ Redial 1. Press the [*] key on the microphone keypad, the LCD displays “A”. 2. Press the [0] key twice, then the last dialed number (up to 16 digits) is dialed and displayed on LCD. 3. Press the [PTT], the number is transmitted. Note: The redial memory is cleared once radio power off. CallⅠ/CallⅡ Press the programmed CallⅠ/CallⅡkey to transmit the stored DTMF code, 2-Tone, MDC1200 signaling, Safety check. DTMF If DTMF signaling is set on the current channel, press the programmed CallⅠ/CallⅡ key to transmit DTMF code. Red LED solidly glows while encoding, and goes out when encoding ends. 2-Tone/MDC1200 If 2-Tone/MDC1200 signaling is set on the current channel, press the programmed CallⅠ/CallⅡkey to transmit 2-Tone/MDC1200 signaling. Radios that set with match 2-Tone/MDC1200, can receive from you. The preset function will be performed when radio receives an incoming signal that with match 2-Tone/MDC1200. ● Red LED solidly glows while encoding; orange LED solidly glows until the preset](https://usermanual.wiki/Quantun-Electronics/QM-790-U1/User-Guide-1336489-Page-20.png)
![20time expires after encoding ends. ●Green LED solidly glows while decoding; orange LED flashes until the preset time expires after successfully decoded. Emergency Call Holding down the Emergency Call key (programmable as long or short press), the radio will enter the Emergency Call mode and switch to the preset Emergency Zone/Channel. The radio will firstly transmit within the preset time period, and then receive within the preset time period, and so does the cycle. The radio will back to the channel before the Emergency Call mode, upon re-holding down the Emergency Call key (programmable as long or short press). Code Squelch This feature can be enabled/disabled by your dealer. If the feature is enabled, the preset 2-Tone controls radio mute/unmute. The radio will not unmute until matched signalling is received. ■ Receive 1, Radio is unmuted when matched 2-Tone signaling (programmed by your dealer) is received, the user can hear from the transmitter without any other operation. 2, The “?” icon flashes on LCD, and the LED flashes orange. 3, Radio is muted upon press the programmed Monitor key, or no signal is received within the preset time period. 4, If the alert tone is enabled, radio will emits alert tone when match signalling is received. lf the Transpond is enabled, radio will transpond a tone to the calling radio. However, radio will not transpond if a group call is received. ■ Transmit 1, Holding down the [PTT], 2, While encoding, the LED lights red. Please refer to the [TTS] key for 2-Tone encoding. 3, Upon release the [PTT], the signalling squelch is disabled, the “?” icon flashes on LCD, and LED flashes orange. The LED lights green while signal is received, and flash orange if signal off. 4, If the programmed [Monitor] key is pressed, or no signal is received within the preset time period, the signalling squelch is enabled. Off Hook Decode If the feature is enabled by your dealer, CTCSS/CDCSS signalling is active no matter the microphone is in the off/on hook condition. If the feature is disabled, CTCSS/CDCSS](https://usermanual.wiki/Quantun-Electronics/QM-790-U1/User-Guide-1336489-Page-21.png)
![21signalling is disabled while the microphone is in the off hook condition. Busy Channel Lockout (BCL) The feature can be enabled/disabled by your dealer, this feature is to prevent transmission on a channel that is already in use. Press the [PTT] on a channel that is already in use, transmission is inhibited and an alert tone is heard . upon release the[PTT], the alert tone ceases and radio returns to receive mode. Press the [PTT] to transmit while the channel is free. BCL Override If the BCL Override feature is enabled, you can override the BCL feature to transmit on a busy channel. Press the [PTT], a BCL alarm will be heard, then repress the [PTT] within 0.5s to override the BCL feature and BCT feature and transmit on the busy channel. Time-out Time (TOT) ■ Time-out Time (TOT) The feature allows for more efficient use of channels by limiting the maximum time of each transmission. It protects the radio from damage caused by long time transmission. Once a continuous transmission exceeds the preset time. (15～1200s programmable), the transmission is automatically terminated and alert tone is heard. The alert tone ceases upon release the[PTT]. The TOT default is 180s, it meets normal operation needs. Any change should be permitted by professional technicians. ■ TOT Pre-alert The radio has a TOT Pre-alert timer. The radio will emit the Pre-alert tone at the programmed time (1～10s before the TOT timer expires). ■ TOT Re-Key Time The radio has a TOT Re-Key timer. Since transmission is terminated upon the TOT timer expires, the TOT Re-key timer is activated, and transmission is inhibited if press the [PTT] before the expiration of TOT Re-key timer (programmable by your dealer as Off,1～60s). ■ TOT Reset Time The TOT Reset timer is activated upon release the [PTT]. While the TOT timer will not reset until the TOT Reset timer expires. Press the [PTT] before the TOT Reset timer expires, the TOT timer continues to countdown. The TOT Reset Time is programmable by your dealer as Off,1～15s.](https://usermanual.wiki/Quantun-Electronics/QM-790-U1/User-Guide-1336489-Page-22.png)
![22Programmable Auxiliary Functions The [P1]-[P4],[▲]/[▼] keys are respectively programmable with one of the following auxiliary functions by your dealer. Reverse Frequency If communications between radios are disrupted because of a long distance from the repeater, the Reverse Frequency function can be used to re-establish communications with another radio. When the function is activated, the transmit frequency and receive frequency will be reversed. The preset CTCSS/CDCSS encode and decode will also be reversed. Press the programmed Reverse Frequency key to toggle the Reverse Frequency function ON or OFF. RE1 CH1 Enabled Disabled Talk Around If the Talk Around feature is enabled, the Rx frequency is used in place of the Tx frequency when transmitting, and the CTCSS/CDCSS decoding signal is used in place of the encoding signal when encoding. Press the programmed Talk Around key to toggle the Talk Around function ON or OFF. TA1 CH1 Enabled Disabled Selectable Squelch Level (SQL) 1, Upon press the programmed SQL key, LCD displays the current squelch level as the following figure. SQL5 CH1 2, Select the desired squelch level via the programmable function key [▲]/[▼]. 3, Pressing any key from [P1]-[P4]to save the selected squelch level. The LCD resumes its initial display. Note: High squelch level may cause the radio to ignore weak signals; while low squelch level may cause noise or unwanted signals to be heard. User Selectable CTCSS/CDCSS (UST) If the UST feature is enabled by your dealer, the user can temporarily change the](https://usermanual.wiki/Quantun-Electronics/QM-790-U1/User-Guide-1336489-Page-23.png)
![23CTCSS/CDCSS codes that preset on the current channel, Operations are as follows: 1, Select a desired channel. 2, Press the programmed UST key to enter the UST mode. 3, Use the [▲]/ [▼] keys to select from the preset UST codes (the newly selected CTCSS/CDCSS code is valid in the UST mode only), then the CTCSS/CDCSS code on the current channel is set as the selected UST code. 4, Repress the UST key to exit the UST mode, then the LCD resumes its initial display. Note: This configuration is automatically memorized if the UST Back Up function is enabled, or else, it will not be memorized once switching channel or power off. Home Channel Upon press the programmed Home Channel key, the radio will promptly go to the programmed home channel. When dual home channels are set, press the programmed Home Channel key to promptly go to Home Channel 1, press again to promptly go to Home Channel 2, and press for the third time to return to the original channel. 2-Tone Encode Select (TTS) 1, Press the programmed TTS key, the LCD displays the preset 2-tone number or alias. The LCD scrolls the alias if it exceeds 8 digits. 2, Press the [▲]/[▼]key to select 2-tone number (01～32)or alias. 3, Holding down the [PTT] to transmit the selected code. 4, Upon release the [PTT], the signalling squelch is disabled and LED flashes orange, the LED lights green when signal is received, and flashes orange if signal off. 5. If the programmed Monitor key is pressed, or no signal is received within the preset time period, the signalling squelch is enabled. Display Frequency Upon press the programmed Display Frequency key, the LCD displays the frequency of the current channel. Display Mode Upon press the programmed Display Mode key, the radio toggle among the following 5 display modes: 1. Channel alias 2. Zone number followed by channel number, “1-CH1” 3. Zone alias 4. Channel frequency. 5. Channel number followed by zone number, “CH 1-1”](https://usermanual.wiki/Quantun-Electronics/QM-790-U1/User-Guide-1336489-Page-24.png)
