User manual PIONEER XR-P370C SERVICE MANUAL

[. . . ] In order to gain the most enjoyment and operating efficiency from your XR-P370C, we recommend that you read this manual in its entirety, and keep it handy for reference as you explore the many capabilities of your new transceiver. Before using your XR-P370C, be sure to read and follow the instructions in the "Before You Begin" section of this manual. GENERAL DESCRIPTION Congratulations on your purchase of the XR-P370C Yaesu amateur transceiver!Whether this is your first rig, or Yaesu equipment is already the backbone of your station, rest assured this transceiver will provide many hours of operating pleasure for years to come. The XR-P370C is an elite-class HF transceiver and will provide exceptional transmit and receive performance. [. . . ] If the impedance presented to the transceiver is other than 50 Ohms, the ALC meter action observed may not be related to the proper setting of the [MIC] (gain) knob. Therefore, we recommend that you make [MIC] gain adjustments into a dummy load or an antenna system presenting an impedance very close to 50 Ohms. Rotate the [RF PWR] knob to set the desired power output. Clockwise rotation of the [RF PWR] knob will increase the power. The adjustment range is between 10 Watts and 200 Watts, and you should always use the minimum power necessary for maintaining reliable communications. The RF Power Output will show for 3 seconds in the lower right corner of the Main Display whenever the outer [RF PWR] knob is turned. Alternately, the 3-second display feature may be changed to show in the SUB DISPLAY-III window via Menu item "018 DISP INDI". Additionally, you may disable the 3-second display feature via Menu item "017 DISP LVL IND" See page 122 for details. The analog PO meter indicates the average power output level. SSB transmit average talk power is normally 10% to 50% of the peak power output. Voice characteristics, microphone qualities, parametric equalizer and compression settings affect actual talk power output. The transmitter will be engaged, and the " " icon will blink while tuning is in progress. When the optimum tuning point has been reached, the radio will return to receive, and the " " icon will again glow steadily (instead of blinking). While tuning around the band using the Main Tuning Dial knob, you will observe that the " " icon blinks momentarily every 10 kHz. This momentary blinking indicates that a new tuning window has been entered. If you want to save tuning data associated with each 10 kHz window, repeat step 4 (above) for each of the windows. On bands like 1. 8 MHz where the impedance may change rapidly, the storage of a number of tuning points is recommended. To disconnect the ATU from the transmit line, press the [TUNE] button briefly. The " " icon will turn off, confirming that the ATU has been turned off. In the "Off" mode, the transceiver will be directly connected to the coaxial cable connected to your antenna, and it will operate based on whatever impedance is present at the station end of the coax. [TUNE] Button [RF PWR] Knob ADVICE: The ATU circuit is located between the final amplifier and the rear-panel antenna jack; reception is not affected by the ATU. QUICK POINT: As shipped from the factory, only one ATU alignment point is saved on each Amateur band. This was memorized during the final alignment and performance verification stages on the production line. [. . . ] 17, 81 VRF Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27, 28, 54 Q QMB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22, 101 Quick Memory Bank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 Quick Split . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]