Radio Shack HTX-420 Owner's Manual

Also see for HTX-420: Owner's manual

Contents

BG TECH.VERSION III2001/2/28USING DTMF CODEDTMF (Dual-Tone Multi-Frequency) tones are those typically associated with the use of your telephone. Yourtransceiver can tranmit up to 16 separate DTMF tones and store a sequence of tones in up to 6 differentmemory location (d1 to d6). You can use DTMF to transmit to a land-patch and then to a telephone line. Thislets you enable or disable certain repeater functions, which is handy if you are involved with repeateradministration. You can also signal to another radio equipped to receive DTMF codes.TRANSMITTING A DTMF CODED FROM MEMORYPress “F” + “D.SEL” and , select desired the DTMF code memory pressing up or down arrow key orrotary switch. Press or PTT or “F + “D.SEL” to exit to VFO mode.Press “PTT” + , to transmit a DTMF in memory.TRANSMITTING A DTMF CODE USING DIRECT ENTRYHold down “PTT” and enter each character of the desired DTMF code in order. There is no limit onthe number of DTMF characters.DTMF code is displayed on the sub frequency disply and if there is no entry for 3 sec while pressing“PTT”, the last used data is displayed. If you re-enter the character, it will continue to display afterthe last used data.