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YAESU
FC-700
ANTENNA COUPLER
GENERAL
The FC-700 is an ultra-compact antenna tuner for thé FT-77 transceiver. Designed for
opération on thé 80 through 10 meter amateur bands (including WARC bands), thé FC-700
will provide a 50-ohm load to thé transceiver when thé feedpoint impédance of thé antenna
System is within thé approximate range of 10 ohms to 250 ohms.
The FC-700 includes a built-in SWR and power meter, providing 15 watt and 150 watt
scales. Also included is an internai 50-ohm dummy load, which may be selected instead of
thé antenna for preliminary coupler adjustments. A THRU position of thé bandswitch
also allows thé antenna to be connected directly to thé transceiver, bypassing thé tuning
circuit.
High-quality low-loss components are used throughout thé FC-700. The matching function
it performs means thé transmitter can always "see" thé résistive termination for which it
was designed. The inhérent selectivity of thé FC-700 matching circuitry helps attenuate
harmonies too, thus reducing thé chance of harmonic-related TVI or out-of-band émissions.
Please read this manual in its entirety, so as to dérive maximum benefit from your new
FC-700.
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