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1) Those SWR numbers are typical and normal for a Wilson 1000.  Make sure you re-calibrate the SWR meter before checking on each ch: 1, 20, & 40.  Make sure that you vehicle has the doors closed and you aren't around other cars or metal buildings when you test it.


2) Either it is a Imax 2000 or a Solacon A-99.  It can't be both.  The Imax is 22 1/2 ft long and is in three ~8 ft sections and the A-99 is 18 ft long and has three 6 ft sections.


3) You cannot compare a mobile antenna with a length of 5 1/2 ft to a 18 or 22 ft base antenna.  Like comparing a $20 bill to a $100 bill.  They are both paper currency; but they both spend differently.  Don't they?  A mobile antenna isn't truly resonant with a short length and a base antenna is resonant with a longer length (1/4 wave=~9 ft, 1/2 wave=18 ft, 5/8 wave=~22.5 ft).  A mobile antenna is a compromise antenna; but they will work.  A 1/4 wave mobile antenna is the best; but difficult to work with.


4) Put the tuning rings back to where they were on your base antenna before you messed with it.  Probably will still need to re-tune it anyway - now.


5) Both the Imax and the A-99 need to have a ground plane kit - or 10ft of steel support mast to act as a ground plane - to radiate properly.  If you talked to someone that far away, that was just luck of the draw.  These antennas aren't efficient until they have some kind of ground plane - either a ground plane kit or 10-20 ft of steel mast to work with. They will use the coax as a ground plane if there is nothing else; but that isn't dependable and will only cause interference with consumer electronics devices.  eg: a TV set or even your CB.