The VL-1000 is
crafted with reliability as the #1 objective. Extensive monitoring
of heat, current, input drive, and other parameters allows the
microprocessor to control the protection circuitry with
lightning-fast response time. And the extensive heat sink design
provides a huge margin of safety for the cooling of the PA and
Quad Push-Pull Design
rugged MRF-150 MOS FET power transistors in a four-module
push-pull configuration, the Yaesu design team has conquered the
difficult challenge of providing high power output along with low
spurious emission, along with high reliability.
Automatic Band Change
with most modern Yaesu transceivers, band data information is
transferred between the transceiver and the VL-1000, allowing
automatic band change on the amplifier when you change bands on
the transcevier. The VL-1000 also provides automatic band changing
via a frequency-sensing circuit, when used with other exciters;
just a press of the "F-SET" key is required to detect the
frequency and switch bands.
Two Input and Four Output Jacks
integration into your multi-rig Yaesu station, the VL-1000
includes two input jacks, along with four output (antenna) jacks.
The microprocessor automatically selects the correct combination
of connectors, according to your original setup, so you never have
to be throwing switches when you change bands!
Automatic Antenna Tuner
Automatic Antenna Tuner is designed to smooth out minor impedance
variations in your antenna system, ensuring full power output
without placing the amplifier circuitry in danger due to excessive
RF voltage. And unlike some solid state amplifiers, if you forget
to turn the auto-tuner on but the amplifier encounters an SWR
somewhat over 2:1, the VL-1000 doesn't turn itself off! Instead,
it switches to low power (500 W) first, to let you try to make the
contact. further power reduction will occur, of course, if a
serious SWR anomaly exists.