I phoned Maverick for a replacement. I had to contact Maverick with 8 Emails after they told me they would send me a new unit. My ET-73 would not work if I moved it more then ten feet from the sending unit. It was brand new. It took almost two months of asking them to please send my replacement.
The new one works well and I love it!!!
They made a bad batch back in May of 04.
Glen
http://www3.sympatico.ca/ghiggs/