2018-07-25 (W) UHFImplant

The external antenna available from the same retailer was not able to be opened without damage. Screws on the back were removed, but it seemed that a layer of glue was also applied between the backplane and cover. Opening the antenna could have revealed what type of antenna was inside and that might help design another one.

Evidence of glue on the antenna

To use an external antenna, a solder jumper must be removed which connects to the onboard trace antenna, and a new solder jumper must go to the RF connector. An ordinary soldering iron was used. There are helpful instructions through the retailer but they do not show a before picture.

Factory setting of antenna selector, BEFORE image
New solder bridge to connect the external antenna, AFTER image

As advised by the retailer, a piece of tape was used to hold the antenna wire to prevent undue strain on the cord. The tape was trimmed down to fit neatly on the board.

RF adapter held in place

Tie blocks and zip ties were used liberally to hold antenna wires in place inside the enclosure. The zip ties will have to be cut if the electronics are ever removed from the case.

Fastened antenna wires

Testing with the external antenna was unreliable. Tags could be read at a greater distance but even at a short distance, the readings were not reliable. This could be due to power from a small battery pack, or power throttling by the scanner. The cause and solution will have to be researched.

External antenna at approximately one meter

The rest of the posts for this project have been arranged by date.

First time here?

Completed projects from year 1.

Completed projects from year 2.

Completed projects from year 3.

Completed projects from year 4.

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