I. Installing the antenna

1. Remove all parts of the Wilson Slide-To-Tune™ No-Ground antenna from the package.

2. Install the included mount on the mirror bracket.
NOTE: Insure the antenna is installed 6-8" away from any conducting or reflecting metal sides. Also see note III (Height above roof top) below.

3. Install the coax cable. (The lug has not been pre-installed on the coax, so that you may use the smallest possible hole to route the coax.) Also see note IV (What about excess coax cable?) below.

4. After completing the coax cable installation, attach the included lug to the bare coax cable end. Use a crimping tool to secure lug onto cable.


5. Connect the lug to the bottom side of antenna mount as shown below.


6. Secure coaxial cable to mirror mount (or mirror support arm) with a cable tie to remove strain on connection to mount lug and prevent coax from moving .

7. Connect the PL-259 end of the coax to the SWR meter or radio.

8. Secure the antenna onto the mount by tightening the hex nut with a crescent or open-end wrench. CAUTION: Do Not Over Tighten.

The Wilson No-Ground antenna is pre-tuned to produce SWR results of less than 2:1 on all 40 channels, for most installations. However, due to differences in vehicles and installations, it is recommended that the antenna be tuned for the specific installation.




II. Tuning the antenna

1. Connect system as shown below, using a 3' length of RG/58 (or Mini 8) coax cable between the radio and the SWR meter.


2. All doors should be closed and the vehicle should be away from close range of buildings, trees and power lines when checking SWR.

3. Calibrate the SWR meter according to the manufacturer's instructions.

4. Check system for SWR reading, on CH-1, 20, and 40.

5. If the SWR is higher on CH1 than on CH40, loosen tuning knob and simply slide knob back (towards SWR meter) about a 1/4", tighten knob and recheck the SWR. Continue this method until the lowest SWR is obtained on CH20.


6. If the SWR is higher on CH40 than on CH1, loosen tuning knob and simply slide the tuning knob forward (towards antenna) about a 1/4", tighten knob and recheck the SWR. Continue this method until the lowest SWR is obtained on CH20.

7. Once you achieve the proper SWR, then firmly secure the tuning knob.
CAUTION: Do Not Over Tighten.

III. Height above roof top
Because Fiberglass antennas are top loaded, performance is improved when a minimum of 2/3rds of the total antenna height is above the roof top. In installations where this is not practical, use one that will permit all of the top loaded portion to be above the roof.



IV. What about excess coax cable?
Using the all the coax cable can sometimes result in an excess amount of cable in the cab. This excess cable should be "stuffed" underneath the dash, under the carpet, or use some other means of hiding it. It should NOT be coiled into a nice neat roll or coil. This creates an "RF Choke" and de-tunes the antenna system, in some cases to the point of not being able to get the SWR down to an acceptable level.
WARNING: Never cut the supplied coax cable. The cable is a desired length and part of your antenna system. Altering the antenna or coaxial cable voids warranty.



V. RV / Motor Home Installations
For those mobile homes without good mirrors (or ones very low), using the "'L" section of the mount (as shown below) will work just great. It can be attached against the verticle side of the motor home for a flush mounting position.

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