Originally Posted by Pelagic
Richard, I am pretty sure that the default stand-bye mode when you power on is a mandatory safety
regulation which makes sense to me.
Radars go through a self test (approx 50 sec) before powering up the scanner and if there is a problem they will tell you what it is rather than let you do further damage.
Proper training instructs the operator to always check that the scanner is clear (especially open array) from lines or crew climbing the mast
I have a sign that I put on the radar control as a reminder
I agree with your comments regarding fault damage but it only adds weight to my gripe.
Whilst the radar scanner is out of standby mode (the situation I would prefer on powering up MFD) no power is applied to it (or if open array with external power source, this is not applied) so no possibility of damage. When the user takes the positive action of turning it on into standby, surely he would be more aware of any possible fault than if it came on by default, when all he wanted was the chartplotter
The safety issue is answered by having an additional transmit button. The scanner will not rotate or transmit until this is pressed.
BTW I think the delay between turning on and being able to transmit is because the klystron is a thermionic device and needs to warm up.