Many people new to metal detecting dream about finding their first Roman and Hammered coin, a common perception is that they are missing a certain sound or signal. This is not true as the metal detector does not know the difference between a ring-pull and a Roman coin, as the very often have the same conductivity level. The metal detector just registers a target based on conductivity.
So in theory if you can find foil and ring pulls, the only thing you are missing out on is luck and possibly the correct site.
Or perhaps one or two other small elements !
Choosing the right frequency
Some hammered and Roman coins sound shorter due to their size, and this is when using a higher frequency can really be a bonus, something higher than 11Khz normally does the job.
Let’s assume your frequency is within the desired band, and you know you are in a good area, it’s time to look at your search technique, many of us think we have a perfect sweep, but in reality it’s either to fast, to slow or to high, so try and pay extra attention to the basics.
Detector Vs site conditions
If you are on an area of ancient habitation, you will without doubt be confronted with lots of Iron, and this will be your biggest hurdle. If your detector has a slow sluggish recovery speed, your chances will be dramatically reduced, cheaper American metal detectors such as the Garrett Ace, are renowned for struggling amongst iron due to their slow recovery rate, but I guess you get what you pay for.
The more refined detectors have an adjustable recovery rate, along with many other very important features.
For those not aware of recovery speed, or reactivity, it is the time it takes for a metal detector to re-set it’self after reporting a target, very much like camera snapshots in burst mode.
Basically, if you have a good metal detector, you are on some ancient land and your search technique is sharp, your turn will come.
Searching for Roman coins video