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I have a Wayfinder VT220. I do not have the instructions. I need to re-calibrate as the readings are inaccurate and i dont know how to do that.

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Posted on Jan 02, 2017

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SOURCE: inaccurate reading

I'm not sure why you need it calibrated if your Docotor says it's accurate but here is a web site link....

I hope this helps.

Posted on Dec 25, 2008


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The only way to recalibrate it, is to send it to the manufacturer. Generally, they do not charge for this service (except for shipping it to them). The reason they have to do it, is that they have to certify that the calibration is correct.

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Cobra 29 ltd classic antenna calibration ??

You should not calibrate the antenna before you install it on the car!! the antenna needs to be calibrated on the vehicle that it is going to be on. Type of vehicle, different mounts, and many other variables can change the amount of reflection you will get.

j0hn9999 did a much better job but left some info out.

Take your SWR readings on channel 1, then on channel 40.... NOW, if your SWR is higher on ch 40 then ch 1, then your antenna is too long and it needs to be shortened. Refer to the antenna instructions on how to shorten the antenna.

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