Here's a picture of it....including some cables (transmitter/Antenna).  Had it for the Voyager....

It's yours for the shipping cost.  PM me if yer interested...

http://www.ioffer.com/i/field-strength-swr-tester-by-radio-shack-no-21-523-168686281

What the heck does that thing do??

Kidding..Beena while since I've seen or used one of those doowackies..

Lower the reading the better, right?

It's been awhile for me as well.  You adjust the antenna up and down for the lowest reading, I think.

used for CB adjustments?  just curious...

used for CB adjustments?  just curious...

For tuning the antenna to the radio set or the antenna mast to the base more like it. Plug in between radio and antenna, key the mike and go for the lowest swr. I remember having to trim an antenna a couple times.

Makes you wonder how the short rubber antenna's perform out of the box

The Voyager had a pretty long whip antenna at the back of the bike.