The Tamiya emitter driver roughly drives 10x current pulse compared to the LED continous current rating.

The sensitivity of the DBU detector may be the variant as YHR said. I can try the DBU head in the Tamiya socket and see if range is different, although construction of the housing potentially leaves much to question its affect on the sensitivity.

The Tamiya TBU 'can' be made more sensitive, whereby in my testing ranges up to 125 feet are possible.

blitzkrieg65: I accept your challange and look forward to meeting you as well!

I will be bringing David's 'Fanban' to the April event to try out as well.