83 BASIC OPERATION Receiving and transmittingCAUTION: Transmitting without an antenna may dam-age the transceiver.q Push [POWER] to turn power ON.w Set the audio and squelch levels.➥ Rotate [SQL] fully counterclockwise in advance.➥ Rotate [VOL] to adjust the audio output level.➥ Rotate [SQL] clockwise until the noise disappears.e While pushing and holding [H/L], push [DIAL•DUAL/GRP]to change the channel group. (p. 7)r Rotate [CHANNEL] to select the desired channel.(pgs. 6, 7)• When receiving a signal, “BBUUSSYY” appears and audio is emittedfrom the speaker.• Further adjustment of [VOL] may be necessary.t Push [H/L] to select the output power if necessary.• “2255WW” or “11WW” appears when high or low power is selected, re-spectively.• Choose low power for short range communications, choose highpower for longer distance communications.• Some channels are for low power only.y Push and hold [PTT] to transmit, then speak into the mi-crophone.• “TTXX” appears.• Channel 70 cannot be used for transmission other than DSC.u Release [PTT] to receive.IMPORTANT: To maximize the readability of your trans-mitted signal, pause a few sec. after pushing [PTT], holdthe microphone 5 to 10 cm from your mouth and speakinto the microphone at a normal voice level.tMicrophoneq yrewwiur e y