Induction Balance coil

[NW (IRL)]

I need to build a 3" to 4" for savo electronics ltd (whites uk in the 1980's) treasuremaster ib/tr detector. So where do I start????. The unit has a coil conector not unlike the modern whites units and has 5 wires connested to a 6 pin plug, colors are 1 blue 2 yellow 3 brown 4 grey 5 and 6(center pin)black connested to both. It this the way current whites coils are connected. Can any one help with this project.

[NW (IRL)]

???

[Carl]

White's detectors use 5 wires on a 5-pin plug, colors vary. I suspect no one is familiar with a "Savo", which is why you got no replies. IB coils are hard to build & align, and you need to know existing coil parameters & internal components to make a new one compatible. You might end up having to effectively destroy an existing coil to get the info you need.

- Carl

[Carl]

...email White's, and ask them about the pinout. There's a very good chance that the Savo design uses coils that are entirely compatible with other White's TR models, if the connector is swapped out. If so, a 4" TR coil would be cheap. And much easier than making one.

- Carl

[NW (IRL)]

...in fact after further research, I have found that the savo is is very similar to whihes existing Beachcomber range of detectors, so I have decided to try a BM350 coil, All I have to find out what wires go where.