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Abnormally Noisy QED
There are a number of things to check if your QED appears to be abnormally noisy:
•
Check and clean your coil plug both on the coil side and the QED side. Any dust in either can
cause unwanted noise.
•
Ensure that the coil plug is ‘done up tight’ so that no movement can occur within the plug.
•
Ensure that your batteries are clipped solidly into place as any movement can cause
unwanted noise.
•
Check fuse security to ensure that the fuse is securely mounted.
•
Check your audio jack connection(s) to ensure your connection is tight and ‘clicks’ in solidly.
o
This applies equally to the large audio plug (into the QED itself) and if you are using
one, the small audio plug connection into the audio plug adapter.
o
For example, my audio plug adapter (small to large) fit became sloppy and caused all
sorts of noise issues when out last week. New plug adapter and all is quiet again.
Checking/adjusting Ground Balance on the fly whilst detecting
An easy and fast way to check and adjust the ground balance on the fly is a worthwhile tool to have
in your arsenal. Once you get used to it, it can save you a lot of time.
It is as simple as swinging the coil in an upwards direction at the end of your swing, like a pendulum,
to check the GB. This is contrary to good detecting practice where for even/maximum detecting
distance a full flat swing from side to side is essential.
So from time to time to check the GB while you are detecting, swing the coil up at the very end of
your swing and take note of any pitch change:
1. If you are still in GB, the detector will remain quiet, so keep detecting
2. If you get a rising pitch, adjust the MGB up until the detector is back in GB
3. If you get a falling pitch, adjust the MGB down until the detector is back in GB
It’s worth noting that for this to work effectively and quickly for you, the QED should be in the MGB
adjust setting whilst you are detecting. I always set it back to this position after adjusting anything so
that I am ready to adjust the MGB while I am detecting. A quick way to do this is to momentarily push
the AGB button - this sets the QED back to the MGB adjust setting from any setting.
T
he above ‘on the fly’ GB method is a quick and effective method to check/adjust the GB without
stopping to perform the standard MGB process, which takes more time.
it’s also worth noting that the ‘on the fly’ MGB adjustment direction is the reverse of the
standard
MGB process, which is based on the pitch as you LOWER the coil to the ground.
Summary of Contents for PL3
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