Operation and Installation Manual
KRT2 VHF-Communication Transceiver
Doc.-No: KRT2.A-MAN.en
Rev. 0101
Page
27
Summary:
•
Select the Standby frequency to be monitored in addition to the active frequency.
•
With the AUD button and turning knob set SQnn to 2 or higher.
•
With the DUAL button activate the DUAL watch function.
•
When there is no reception on both the Active frequency and the Standby frequency the re-
ceiver scans both frequencies.
•
When scanning the Active frequency always has priority.
•
Deactivate the DUAL watch function with the DUAL, FREQ or MEMORY buttons.
4.6 Transmitter Operation
The unit transmits on the active frequency (upper line) as long as a PTT (press to talk) switch is
pressed.
Transmission
Reception
Figure 5: KRT2 TX & RX operations
“TX“ indicates normal transmitter operation.
“RX“ indicates a receiver operation.
In the lower left corner of the display the carrier modulation is dynamically displayed. It corresponds to
the side tone which is not available on gliders when no earphones are in use.
In order to avoid the blocking off of the frequency by unintentional long transmissions (stuck micro-
phone) the transmitter is switched off after two minutes and the display changes from „TX“ to „Te“. To
resume transmission the PPT switch first must be released and then be pressed again.
While transmitting the external audio input will be turned off automatically and the microphone input,
selected during the pre-setting in the TXm-menu, will be selected.
The differential speaker output will be turned off to prevent an audio feedback to the microphone. For
the same reason; the speaker is turned off when the intercom (VOX) is active.
The output for the headset will carry the side tone.
