Interesting, but I have to wonder.... why bother?.... and I don't doubt
there may be a "techie" answer, since if your radar is behind a mast,
without "blanking" you will get a shadow which is exactly what you'll get
"with" blanking (most ships have "shadow" diagrams and although I know
blanking wasn't done in the past I can't guarantee it's not being done now).
I have to wonder if your set may have this ability so that if it's used in a
shorebased application then "blanking" can be employed.

otn

"Charlie Morgan" wrote in message
...


My Furuno 1623 has two settings in the "system menu" one is for
"Transmit blanking start", and the other is for "transmit blanking
stop". The settings are in degrees of a circle. You set these on a
RADAR with a mast mounted array to stop transmitting during the arc
where the antenna is aimed at the mast, which is only a few inches
away from the antenna array.

http://www.furuno.com/Furuno/Doc/0/0IJR6NM0RIRK19KV99NH090O68/1623%20Operator%27s%20%20Manual.pdf

Pages 16 and 17 of the manual mention it

CWM