General Description - Yaesu FT-1000 Operating Manual

I, General Information - General Description
General Description
The FI-1000 is a high performance hf transceiver
providing dual-channel reception on all frequencies
between 100 kHz and 30 MHz, adjustable transmitter
power output of up to 200 watts on all hf amateur radio
bands in CW, SSB, FM, RTTY and Packet (F1 and F2)
modes, and up to 50 watts carrier in AM mode. A
heavy-duty AC power supply, automatic antenna tuner
and iambic electronic speed keyer/bug simulator are
supplied,. built in, as standard accessories, along with
eight IF filters for the 2nd and 3rd IFs of the main and
sub receivers.
Inside the FT-1000, modular construction with ex-
tensive use of surface mount components on composite
epoxy boards allows greater RF circuit isolation and
higher reliability than previous manufacturing techni-
ques. A squirrel cage blower in the heart of the trans-
ceiver replaces the usual rotary fan to cool the
interdigital final heatsinks quietly and efficiently.
For exceptionally clean receiver and transmitter
performance, the FT-1000 incorporates two 10-bit and
three 8-bit Direct Digital Synthesizers for its local
oscillators (all driven by a single TCXO master oscil-
lator), and the operator's choice of front end RF ampli-
fication (using four FETs in a double push-pull,
constant-gain stage), direct feed to the double-balanced
quad FET ring mixer, or three levels of RF attenuation
in 6-dB steps. Two receiver front ends, IF strips and
vfos allow simultaneous reception and display of two
different frequencies, even in different modes and with
different IF bandwidths. Receiver audio can be com-
pletely or partially mixed, or monitored separately in
each ear. With independent bandwidth and mode selec-
tion for each receiver, plus an option for separate anten-
nas and bandpass filters, a variety of diversity reception
modes are available when both vfos are tuned to the
same frequency.
Six microprocessors in the FT-1000 are program-
med to provide the simplest possible control interface
for the operator, even for previously complex applica-
tions like diversity reception and hf packet. Two dual-
speed tuning knobs allow simple independent adjust-
ment of the two yfos at all times. Fine tailoring of the
IF passband is made possible with pushbutton crystal
filter selection, concentric IF width and shift controls,
and an IF notch filter. Separate keys are also provided
for band selection, and each band key accesses two
subband yfo frequency/mode/filter settings per band,
so you can keep separate vfo settings for two different
parts of the band, on all bands. In addition, 99 scanable
memories are provided, each of which stores its own
mode and IF filter selection, in addition to frequency,
clarifier offset and scan status. The built-in automatic
antenna tuner includes 39 memories of its own, auto-
matically storing antenna matching settings for quick
automatic recall later. Of course the front panel keypad
can also be used to key in operating frequencies direct-
ly,
Special installable options for the FT-1000 include
the BPF-1 Bandpass Filter Module to allow dual recep-
tion on separate antennas (and any hf frequencies), the
TCXO-1 Temperature Controlled Crystal Oscillator
module for precision stability over an expanded tem-
perature range, and of course a wide selection of IF
filters to complement the eight already installed as
standard, External options include the DVS-2 Digital
Voice Synthesizer for continuous recording and instant
playback of received signals, and pushbutton pre-
recorded transmissions; the SP-5 External Loudspeak-
er with audio filters and optional LL-5 Phone Patch
module; the YH-77ST Stereo Headset; and the MD-
Icg Desktop Microphone and MH-1pg Hand Micro-
phone.
Before connecting the power cord, you should read
the Installation section carefully, heeding the warnings
in that section to avoid damage to the set. After instal-
lation, please take time to work through the Operation
chapter, referring to the Controls & Connectors chapter
as necessary for details. These chapters are intended to
be read while sitting in front of the FT-1000, so you can
try out each control and function as they are described.
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