11. Refer to calibration chart, set transmitter tuning control to same frequency as now appears on the receiver dial. 12. OFF SEND STANDBY switch to STANDBY when using GN 58 and BA 317. 13. Adjust A.F. gain for the desired volume and turn R.F. gain to mid point. 14. Adjust OSC CAL control until zero beat is heard. (Do not close microphone or key while performing this step.) Power must be obtained at this time from the generator. 15. Refer to calibration chart and set transmitter tuning to desired operating frequency and look tuning control.