[SBE] Unattended operation

[Cowboy]

On Thursday 16 June 2011 12:23:46 pm Dan Rapak wrote:

> Was this time limit always 3 hours?


 No.   ;)
 That's a new thing based on a false assumption by an inept commission
 at the time of adoption.
 It could be argued ( and was ) that there was always a 3 hour implication
 in the rules, because you wouldn't know if control was lost until you attempted
 to take readings, and readings carried a 3 hour limit.
 The rule quite clearly spelled out something different.


> I'm trying to recall what the "fail-safe" timeout was on our

> remote controlled transmitter was when I worked in local television in the late 1970's.  


 Then, if there was reason to believe that meter readings were inaccurate,
 you had three hours to either restore the readings, or to cease operating
 by remote control. ( the basis for the current rule )
 You could remain on the air, but not by remote.

 If positive control was lost, there was no time limit at all.
 The fail-safe was to terminate the transmitter immediately.
 ( in reality, most inspectors allowed a few seconds )

 If, however, there was an independent means of positive control,
 such as an STL squelch or STL carrier detect, that WOULD terminate
 the transmitter no matter what, then "positive control" was interpreted
 to have not been lost. Not a rule, more a policy.

-- 
Cowboy