going off the radio meter, it looks like i have an swr reading of 1.2 on 1, 1.4 on 20, and 1.6 on 40.........that means cut the antenna correct??????
i have a wilson 5000 mounted on the mirror of a 2007 century class s/t freightliner...........i got the wilson 5000 (because of the whip).....myself being a local driver, making deliveries to residential streets and wacking alot of trees just seemed best (i hope).........that being said, if my antenna wacks to many trees, will that screw up the swr or the antenna(with the exception of the antenna breaking off)??????????
swr w/ antenna quesion???
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BobOstro61
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BigBopper
1. Choose a clear location to adjust the SWR.
Antennas are very sensitive to objects close to them. Go to an open area to tune your antenna, such as a parking lot. This can be done at home, providing you are not close to the house. Do not try to tune inside a building, under trees, near or under power lines, nor with someone standing next to the antenna. This distorts the signal and causes a reflection back into the antenna giving false readings. Also, close all doors, the hood and trunk lid.
2. Setting the SWR.
1. Test with the radio only. If you have an amplifier, either turn it "Off" or preferably remove from installation.
2. Insert the antenna whip 1" into chrome antenna adjustment mast at the top of the coil.
3. Using either the meter built into the radio or a good external SWR meter, calibrate on channel 20. Switch back to SWR and record the readings on three channels; 1, 20, & 40.
4. If the lowest SWR reading occurs on channel 1, the antenna whip is to long and must be shortened. Loosen the mast set screws and lower the whip 1/4" into the mast. Tighten mast set screw and again read SWR. Repeat until lowest SWR is obtained.
If the whip is fully lowered into mast and the SWR is still high, remove the whip from mast. Using a hacksaw, grinder, or bolt cutters, cut 1/4" from the bottom part of the whip. Re-insert the whip into the mast and test again for SWR. Repeat the above procedure until the SWR is below 1.5 of all channels.
If the lowest SWR reading occurs on channel 40, the antenna whip is to short and must be raised. Loosen the mast set screws and raise the whip 1/4", re-tighten set screws and test SWR again. Repeat the above procedure until the SWR is below 1.5 of all channels.
Antennas are very sensitive to objects close to them. Go to an open area to tune your antenna, such as a parking lot. This can be done at home, providing you are not close to the house. Do not try to tune inside a building, under trees, near or under power lines, nor with someone standing next to the antenna. This distorts the signal and causes a reflection back into the antenna giving false readings. Also, close all doors, the hood and trunk lid.
2. Setting the SWR.
1. Test with the radio only. If you have an amplifier, either turn it "Off" or preferably remove from installation.
2. Insert the antenna whip 1" into chrome antenna adjustment mast at the top of the coil.
3. Using either the meter built into the radio or a good external SWR meter, calibrate on channel 20. Switch back to SWR and record the readings on three channels; 1, 20, & 40.
4. If the lowest SWR reading occurs on channel 1, the antenna whip is to long and must be shortened. Loosen the mast set screws and lower the whip 1/4" into the mast. Tighten mast set screw and again read SWR. Repeat until lowest SWR is obtained.
If the whip is fully lowered into mast and the SWR is still high, remove the whip from mast. Using a hacksaw, grinder, or bolt cutters, cut 1/4" from the bottom part of the whip. Re-insert the whip into the mast and test again for SWR. Repeat the above procedure until the SWR is below 1.5 of all channels.
If the lowest SWR reading occurs on channel 40, the antenna whip is to short and must be raised. Loosen the mast set screws and raise the whip 1/4", re-tighten set screws and test SWR again. Repeat the above procedure until the SWR is below 1.5 of all channels.
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chopcorejc
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chopcorejc
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Rex_foxhound
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stickman
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THUMPER
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coondog
chopcorejc,from my experience of hitting tree twigs once in awhile i never had a problem as long as they were twigs and not big branches.i surely learned to becarefull of drive throughs though.
before i put my predator 10k back on i ran a mr.coily enforcer and after hitting a drive through to close it actually pulled out my stinger about 3 inches.didn"t figure out the reason for my swr going nuts for a couple of days.
wouldn"t hurt to use a black magic marker to mark your stinger at the mast once your swr is where you want it.you can at least look at it once in awhile to make sure everything is ok.
before i put my predator 10k back on i ran a mr.coily enforcer and after hitting a drive through to close it actually pulled out my stinger about 3 inches.didn"t figure out the reason for my swr going nuts for a couple of days.
wouldn"t hurt to use a black magic marker to mark your stinger at the mast once your swr is where you want it.you can at least look at it once in awhile to make sure everything is ok.
