Hi MB,
To convert your Panzer111 to 2.4 GhZ will cost before postage $102.65 and I promise that it is probably about the cheapest you will be able to convert to 2.4 GhZ and at the same time the most upto date.
Go to---
www.forgebeartanks.com
Click on Store then click on Electrical,
The top left hand corner item is what you are after,
It is a Complete Boxed Taigen 2.4 GhZ Transmitter with a V2 Control Board an Upgraded Speaker, a Sound Module, (Do specify Panzer 4) Wiring and an instruction sheet,
Label every pair of cables that are soldered to your hard wired Control Board then using a soldering iron detach the cables from the board,
Set the board aside you will no longer have need of it,
READ THE INSTRUCTION SHEET and check each socket on the V2 board to make sure you know what goes where then with the new cables with their plugs at one end pre-fitted, solder your labelled Cables to the new correct cables free ends as per the Instructions ,
The Speaker and the Sound Module can be plugged into the V2 straight away without any more work,
It will transform your old PZ111 into one that is as upto date as anything on sale right now,
Dave (Forgebear) Exports across the world and is a trusted Dealer and member of this Forum,
As members of the European Union (For Now) all dealings are taxed 19% VAT,
As a Resident of the USA the tax does not apply to you so that your postal charges will make the upgrade because it is Tax Free about the same price as it would cost a European Purchaser paying Tax AND Postage.
Shaun.