Q-Mac HF-90 Operations & Installation Manual
Also see for HF-90: Operations & installation guide
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Contents
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HF-90 Operation & Installation GuideTA-90 autotune systemChanging channel and transmittingWhen using the HF-90 in conjunction with the TA-90autotune system (for vehicle use) there are certain operatingcharacteristics which you should be aware of. In short,whenever the HF-90 transmits for the first time on a givenchannel (prior to a channel change), the TA-90 Tuner willenter its tune sequence. As the TA-90 tunes, you will hear ahigh pitched tone for a few seconds (only if your volumelevel has not been muted), after which voicecommunications can commence as normal.If you are scanning channels when you receive a validSelcall/Telcall or Beacon Request, the HF-90 will stopscanning, lock on the relevant channel and the TA-90 willenter its tune sequence prior to transmitting the Selcall/Telcall Confirmation or Beacon.Receiving Selcall/Telcall or Beacon Request in scan modeWhen you change channel and then press the PTT switch onyour microphone/handset to transmit for the first time, youwill hear the TA-90 enter its tune sequence (as outlinedabove).Aside from pressing the PTT switch, your HF-90 alsotransmits when receiving a valid Selcall/Telcall or BeaconRequest. It transmits by way of a Selcall/TelcallConfirmation or Beacon back to the originating radio (referto Section 6 in this Guide). When this happens, and youhave not transmitted previously on the given channel, theTA-90 enters its tune sequence prior to transmitting.7 . C O M P A T I B L E P R O D U C T S46Section 7.1 a) Alarm keyThis function is available only on the Australian VersionThe ALARM key is for use in emergency situations so thatyou can alert the RFDS (Royal Flying Doctor Service)quickly and effectively.To use the ALARM key you must be on an RFDS channel(a list of RFDS channels is printed on the “AustralianFrequency List” supplied with your HF-90). Once you haveselected an RFDS channel you can either test the alarmfunction or transmit an RFDS Emergency Alarm.This display shows that the test alarm is beinggenerated.In conjunction with the above you will hear the sound of thetwo-tone test alarm being generated. In this instance thealarm is not being transmitted. The test alarm signal willcontinue sounding for sixty seconds or until another key ispressed (from the left or right key column).Section 5.5Testing the alarm functionTo test the alarm function press and release the ALARMkey. Your display will appear as follows:-Transmitting an RFDS Emergency AlarmTo transmit the RFDS Emergency Alarm press and hold thealarm key for two seconds. Your display will appear asillustrated on the following page:-23 |
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