=  NOW 30 WPM  =  TEXT IS FROM SEPTEMBER 2021  QST  PAGE 94 =

CRYSTALS.  THE RANGES WERE 2 4 MHZ, 4 7 MHZ, AND 8 18 MHZ.  THE CX 7
PREDATED THE ADDITION OF THE WORLD ADMINISTRATIVE RADIO CONFERENCE WARC
BANDS, SO IT DID NOT COVER THEM.  THE SIGNAL ONE RAN 300 W PEAK ENVELOPE
POWER PEP ON SSB AND CW.  A SPEAKER WAS INCLUDED IN THE RADIO, AS WAS AN AC
POWER SUPPLY, OPERATING FROM 120 OR 240 V AC.  THE SIGNAL ONE CX 7 HAD MANY
BUILT IN ACCESSORIES.  FOR TRANSMITTING, THE CX 7 HAD A CW KEYER VARIABLE
FROM 5 TO 60 WORDS PER MINUTE, FULL BREAK IN CW OPERATION, A TRANSMIT
SPEECH COMPRESSOR TO INCREASE TALK POWER, AND BROADBAND TRANSMITTER
OPERATION WITH NO TUNE UP.  FOR RECEIVE OPERATION, IT HAD A NOISE BLANKER,
PASSBAND TUNING, INTERMEDIATE FREQUENCY IF SHIFT, DIGITAL FREQUENCY
READOUT, AND THE ABILITY TO RECEIVE ON TWO DIFFERENT FREQUENCIES IN THE
SAME BAND AT THE SAME TIME.  SPLIT FREQUENCY AND DUAL RECEIVE THE FIRST
MAJOR INNOVATION IN THE SIGNAL ONE WAS THE USE OF TWO VFO ASSEMBLIES, WHICH
GAVE THE CX 7 THE ABILITY TO RECEIVE AND TRANSMIT ON TWO DIFFERENT
FREQUENCIES IN THE SAME BAND OR TO TRANSCEIVE ON ONE FREQUENCY.  THE VFOS
EACH COVERED A FULL 1 MHZ, SO 10 METERS WAS THE ONLY BAND COVERED WHERE THE
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