Ref:feedback From Advertising

I have a fascinating interest in advertising and the theory behind it.Please could someone suggest a few sites or even a agency who will perhaps for a fee reveal their most valuable information.This information being feedback data for advertising strategies.What […]

Minature Circuits

I would like to buy a minature AM transmitter,the size of a five pence piece if possible.Using perhaps a small mercury cell (rechargable)for its power supply.The range of the transmitter need only be two hundred meters.The project is part of […]