Yaesu FT dx 1200 Operating Manual

Also see for FT DX 1200: Operation manual Operating manual Operating manual

Page 64FT D X 1200 O PERA T ING M ANUALssb/am moDe transmissionA dvice : ALC meter deflection may be caused by excessivedrive power, but also by reflected power detected inthe antenna system. If the impedance presented tothe transceiver is other than 50 Ohms, ALC meter ac-tion may be observed that is not related to the propersetting of the [MIC/SPEED] knob. Therefore, werecommend that you make the [MIC/SPEED] knobadjustments into a dummy load or antenna systempresenting impedance very close to 50 Ohms. In the SSB mode, you may set the desired poweroutput via Menu item “177 TX MAX POWER”. Theadjustment range is between 5 Watts and 100 Watts.You should always use the minimum power necessaryto maintain reliable communications. When performing “on air” tests (such as the setup ofmicrophone gain), be sure to check the frequency be-fore transmitting, to avoid interference to others whomay already be using the frequency. Four techniques for exercising Transmit/Receivecontrol are provided on the FT DX 1200. You maychoose the technique(s) that best suit your operatingneeds: Pressing the microphone PTT switch will engagethe transmitter. The rear panel PTT jack may be connected to afoot switch or other manual switching device inorder to engage the transmitter. Pressing the front panel [MOX] button will lockthe transmitter on. Press the [MOX] button againto return to receive. The VOX (Voice Operated Xmit) circuit willengage the transmitter automatically when youspeak into the microphone. For details of VOXoperation refer to page 73.Adjusting the SSB TX Power Output1. Pre ss the [MENU] button to enter the Menumode.2. Rotate the [VFO-B/CLAR] knob (or press the/ button) to select Menu item “177 TX MAXPOWER”.3. Press the [SELECT] button, then rotate the[VFO-B/CLAR] knob (or press the / button)to adjust the desired power output.A dvice :The value (5 -100) displayed in the Menu list isa relative percentage of the maximum TX poweravailable in the selected mode. It is not the trueTX output level.4. Press the [SELECT] button, then press the[MENU] button to save the new setting and exitto normal operation.[VFO-B/CLAR] Knob[MENU] Button[SELECT] ButtonA dvice :The TX Power Output setting cannot be stored inany of the memory channels.