On Wed, 27 Sep 2006 14:11:43 -0400, Charlie Morgan wrote:

All I can tell you is what the manufacturer says, and they call the
two settings on my RADAR "Transmit blanking on" and "Transmit blanking
off"

It has always been my understanding (perhaps incorrectly) that
transmit blanking was offered as a safety feature where the scanner
was located too close to the helm position. If so, that would surely
indicate that the transmitter was being turned off, not the receiver.