[Milsurplus] Command Set Receiver Coffee-Grinder

B. Smith smithab11 at comcast.net
Sat Nov 11 08:37:14 EST 2006


> Breck wrote:
>
>>The "coffee-grinder" tuning was necessary during the enroute navigation 
>>and
>>approach phase where two or three different Low Freq Nav Aids were 
>>utilized
>>and  the crew would attempt multiple bearings for a fix. Obviously it was
>>advantageous to take the bearings as close together time wise so that
>>further adjustments did not have to be made to the LOP(line of 
>>positioning)
>>due to change in the aircraft position during the process.
>
>
Mike says:
That decribes more accurately the use of an RDF/ADF connected to a loop.



Nope.
The paragraph above  describes a very--very--  busy pilot  trying to get an 
off shore fix or shooting a two beacon approach. If you want to know why the 
little  coffee-grinder handle is on the sets then  the above  is the 
explanation.  The task of changing frequencies and getting a proper 
identification was often tedious, time consuming, and sometimes lethal. 




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