User manual YAESU FT-2000D

[. . . ] HF/50 MHZ TRANSCEIVER FT-2000D OPERATING MANUAL VERTEX STANDARD CO. , LTD. VERTEX STANDARD YAESU UK LTD. 4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan US Headquarters 10900 Walker Street, Cypress, CA 90630, U. S. A. Unit 12, Sun Valley Business Park, Winnall Close Winchester, Hampshire, SO23 0LB, U. K. VERTEX STANDARD HK LTD. Unit 5, 20/F. , Seaview Centre, 139-141 Hoi Bun Road, Kwun Tong, Kowloon, Hong Kong VERTEX STANDARD (AUSTRALIA) PTY. , LTD. Normanby Business Park, Unit 14/45 Normanby Road Notting Hill 3168, Victoria, Australia ABOUT THIS MANUAL . . The FT-2000D is a leading-edge transceiver with a number of new and exciting features, some of which may be unfamiliar to you. [. . . ] The transceiver will return to the receive mode. Page 64 FT-2000D OPERATING MANUAL SSB/AM MODE TRANSMISSION ADVICE: ALC meter deflection may be caused by excessive drive power, but also by reflected power detected in the antenna system. If the impedance presented to the transceiver is different from 50 Ohms, ALC meter action may be observed that is not related to the proper setting of the [MIC] (gain) knob. Therefore, we recommend that you make [MIC] knob adjustments into a dummy load or 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 Sub band (VFO-B) frequency display will show the RF Power Output for 3 seconds whenever the [RF PWR] knob is turned. You may disable this feature (displaying the RF Power Output) via Menu item "015 diSP LVL IND. " See page 117 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. When performing tests (such as the setup of the [MIC] or [RF PWR] knobs), be sure to check the frequency before transmitting, so as to avoid interference to others who may already be using the frequency. Four techniques for exercising Transmit/Receive control are provided on the FT-2000D, and you may choose the technique(s) that best suit your operating needs: Pressing the microphone's PTT switch will engage the transmitter. The rear panel PTT jack may be connected to a foot switch or other manual switching device in order to engage the transmitter. Pressing the front panel [MOX] button will lock the transmitter on. Press the [MOX] button again to return to receive. The VOX (Voice Operated Xmit) circuit will engage the transmitter automatically when you speak into the microphone. For details of VOX operation, see page 78. FT-2000D OPERATING MANUAL Page 65 USING THE AUTOMATIC ANTENNA TUNER The Automatic Antenna Tuner (hereinafter referred to as the "ATU") built into each FT-2000D is crafted to ensure a 50Ohm load for the final amplifier stage of the transmitter. We recommend that the ATU be used whenever you operate on the FT-2000D. ADVICE: The ATU of the FT-2000D, being located inside the station, only adjusts the impedance presented to the transceiver at the station end of your coaxial cable feedline. It does not "tune" the SWR at the antenna feedpoint itself. When designing and building your antenna system, we recommend that every effort be made to ensure a low SWR at the antenna feedpoint. [. . . ] Slide the top cover toward to the rear about 1/2 inch (1 cm), then remove the top cover. Refer to Figure 2 for the mounting location for the optional filter. Position the filter so that its connectors are aligned with the mounting pins on the board, and push it into place. Replace the top cover and its nine screws. [. . . ]