User manual YAESU VL-1000

[. . . ] VL-1000 OPERATING MANUAL YAESU MUSEN CO. , LTD. 1-20-2 Shimomaruko, Ota-Ku, Tokyo 146-8649, Japan YAESU U. S. A. 17210 Edwards Rd. , Cerritos, CA 90703, U. S. A. YAESU EUROPE B. V. Snipweg 3, 1118DN Schiphol, The Netherlands YAESU UK LTD. Unit 12, Sun Valley Business Park, Winnall Trading Estate Winchester, Hampshire, SO23 0LB, U. K. YAESU GERMANY GmbH Am Kronberger Hang 2, D-65824 Schwalbach, Germany YAESU HK LTD. 11th Floor Tsim Sha Tsui Centre, 66 Mody Rd. , Tsim Sha Tsui East, Kowloon, Hong Kong General Description Congratulations!You are now the owner of the Yaesu VL-1000 Linear Amplifier, which brings you leading-edge technology for the ultimate in operating convenience and reliability. We appreciate your investment in Yaesu equipment, and wish you many years of satisfying operation using your new amplifier!The VL-1000 is an all-solid-state linear amplifier operating on the 160 through 6 meter amateur bands (USA version: 160-15 meters) at a power output level of 1000 Watts on CW and SSB (500 Watts on continuous data modes such as RTTY). [. . . ] Before commencing initial checkout, verify that the REMOTE switch is OFF. If the REMOTE switch is on, and the VL-1000 is not connected to a Yaesu transceiver providing remote power actuation, Error Message #1005 (which warns of "Excessive PA DC Voltage") will appear following the "Self Test" procedure. If you experience this situation, check to be sure that the REMOTE switch has not accidentally been turned on. VL-1000 Operating Manual Page 9 Operation Preliminary Checks Before switching on power, recheck all interconnections. Be certain that the ground, RF input, and ALC connection cables are all secure. If using a Yaesu FT-980 transceiver for excitation, set the LIN AMP switch on the rear panel to the (upper) Position 1. If using an FT757GX(II) or FT-767GX, ensure that the LIN or LINEAR switch is depressed (Position 1). Other Yaesu transceivers do not require special switch setting on the transceiver prior to commencing amplifier operation 4. When the correct band appears on the VL-1000 display, release the exciter's PTT switch so as to return to the receive mode. If you attempt to transmit on an improper band (for example, at 6. 2 MHz), the VL-1000 will automatically be placed in the "THRU" mode, and no amplification will take place. Antenna Selection Pressing the ANT switch repeatedly causes the VL-1000 to "toggle" between the rear panel antenna jacks. Just remember to select the correct antenna when making band changes during initial operation, and the VL-1000 will thereafter remember which of ANT 1 through ANT 4 should be selected when you return to that band. When the amplifier is turned off, the default antenna selection is ANT 1. You may wish to consider putting a grounding-type coaxial switch in the coaxial line connected to the ANT 1 jack, so as to shunt static electricity or nearby lightning pulses to ground. Band Changes By now, you have noticed that there is no "BAND" switch on the VL-1000. Selection of the frequency band is accomplished in one of two ways: If using a Yaesu transceiver with a BAND DATA control cable, band selection and antenna rematching will occur automatically whenever you change bands on the transceiver. Similarly, the antenna last used by the VL-1000 on each band will be reselected when that band is recalled on the transceiver. If you are using a transceiver without a band control cable, injecting a carrier from the exciter for few seconds causes the VL1000's microprocessor to count the input frequency and automatically set the amplifier up for operation on the appropriate band. Fan Operation The cooling fans for the amplifier and power supply are both thermostatically controlled. The thermostats are set to activate well before "dangerous" heat has built up inside the cabinets. It is quite normal for the fans to cycle on and off, occasionally, even during receive operation. The fans also may continue to operate after the front panel power switch is turned off, this feature allows the complete dissipation of heat so as to ensure long life of the components. Here are the appropriate procedures: 1. Set the MODE switch of the exciter to CW, and the DRIVE or RF PWR control of the exciter so as to provide 50 Watts of less of drive power to the VL-1000. Press the F SET key on the VL-1000 momentarily, then press the PTT switch of the exciter to activate the transmitter. If necessary, close your key to allow a carrier to be transmitted for a few seconds. The microprocessor of the VL-1000 will now detect the frequency of the input signal, and the amplifier will then set itself to the matching band. Important Note The VL-1000 requires input drive power of 50~60 watts. [. . . ] r Do not transmit when turning the POWER switch or the ATT switch on or off. r When changing bands, always make certain that the VL-1000 is set for the same band as the transceiver before transmitting, and that the proper antenna is connected. Remember that ANT 1 is automatically selected when the VL-1000 is switched off. r Reduce the drive power or shorten transmissions if Warning Message #1001 appears on the display (see next page). Page 14 VL-1000 Operating Manual WARNING Messages If one of these messages should appear, a potentially serious situation is being experienced. [. . . ]