[At a loss]

In the antron 99's there is a resistor that is there to protect against lightning strikes. On a number of these antenna's it has been noted that dropping the antenna can cause this resister to fail (i.e. faulty stock cough cough).

Also all the sections screw together, but what is inside them is a length of copper wire which is then soldered into the coupling that the next section screws into. Sometimes not many when manufactured the copper interconnecting wire breaks when the coupling is being fitted causing no connection after that section (check with a multimeter).

(I used to sell them)

But basically with a swr of 2:3:1 after checking that the coax cable is 50 ohms and placing a 50 ohm dummy load at the antenna end instead of connecting the antenna and checking the SWR to make sure that it does not read the same.
If it does then its either the plugs incorrectly soldered/faulty cable (check again with multimeter)or possible faulty SWR meter.

If all is ok at the cable end then it has to do with the antenna.

Also check that the rings on the antron are somewhere just over the half way point. If at the bottom or right at the top then its been adjusted in the past.

One last point is that when SWRing in an antenna if the SWR is high on the highest band then on the lowest band (or frequency/channel) then the antenna is classed has electricially to long and needs to be shortened.

The opposite can be said if the SWR is higher on the lowest band/frequency/channel then on the highest band/frequency/channel then the antenna is to short and needs to lengthened.

Be carefull when adjusting the rings make a tape mark to pop them back it needed.