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AN OLDER LAPTOP BUT DISCOVERED THE ICOM DRIVERS WERE INCOMPATIBLE WITH ITS
WINDOWS 8R1 OPERATING SYSTEM.  THIS MAY HAVE BEEN DUE TO AN ISSUE WITH THE
OLD LAPTOPS CONFIGURATION.  ON MY WINDOWS 10 DESKTOP PC, THERE WASNT A
PROBLEM.  THE DRIVERS CREATE TWO SEPARATE COM PORTS, AND YOULL NEED TO OPEN
THE WINDOWS DEVICE MANAGER TO SEE WHICH NUMBERS WINDOWS HAS ASSIGNED TO
THEM.  ONE IS FOR ICOM CI V COMPUTER AIDED TRANSCEIVER CAT CONTROL AND THE
OTHER PORT IS USED FOR OTHER APPLICA LAB NOTES ICOM IC 705 BOB ALLISON,
WB1GCM THE ICOM IC 705 HAS PLENTY OF DYNAMIC RANGE FOR USE IN THE FIELD OR
A HOME STATION.  AT 14 MHZ, WITH THE PREAMP OFF AND 2 KHZ SIGNAL SPACING,
ITS LOWEST DYNAMIC RANGE IS 90 DB TWO TONE, THIRD ORDER IMD.  THIS
PERFORMANCE IS VERY GOOD.  BLOCKING DYNAMIC RANGE BDR AND RECIPROCAL MIXING
DYNAMIC RANGE RMDR WERE QUITE GOOD AS WELL, AT 124 AND 110 DB,
RESPECTIVELY.  THE ONLY POTENTIAL PERFORMANCE ISSUE MAY SURFACE WHILE
OPERATING ON THE 2 METER BAND, WHERE SECOND ORDER PRODUCTS MAY OCCUR IF THE
OFFENDING SIGNALS ARE STRONG ENOUGH.  SECOND ORDER PRODUCT IS A PHANTOM
SIGNAL THAT APPEARS WHEN THE SUM OF THE FREQUENCIES OF THE INTERFERING
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