Component Tests and General Diagnostics

SNIFFER INFORMATION

Sniffer Construction:

When Checking For Noise On A Wire, The Best Results Will Be Achieved When The Sniffer Is Placed Parallel To The Wire.:

The antenna sniffer can be used along with the Radio to locate "Hot Spots" which are generating radio noise interference. These "Hot Spots" will be found in the harnesses, in the upper part of the dash or even between the hood and windshield.

The sniffer can be made from an old piece of antenna lead-in from a mast or power antenna. The longer the lead-in the better, since it will make the sniffer more flexible as a diagnostic tool.

Make the sniffer as shown above. The 2" section with the black coating and braided shield stripped back becomes the antenna when the sniffer is plugged into the Radio's antenna socket. It can then be used to probe and search out "Hot Spots."

Procedures for use:

1. While listening to the complaint noise, disconnect the Antenna and plug the sniffer into the antenna socket.

2. Turn the Radio volume up.

3. When searching for the noise source, keep fingers off of the 2" probe, otherwise erroneous results will be received.

It must be noted that the sniffer will also locate "normal" hot spots. However, the technician who becomes familiar with the sniffers capabilities will find it the most useful diagnostic tool in noise suppression work.