[Milsurplus] Command Set ReceiverCoffee-Grinder

[B. Smith]

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. It would have 
been nice if we could just freeze the position or fly in a circle but it was 
not practical.    :-)   The dreaded two beacon approach was a real headache 
in a single receiver aircraft.  Took a lot of quick tuning and identifying 
of the beacons. You couldn't crank it fast enough and you had better be 
proficient with the code.

73 Breck k4che


From: "William Donzelli" <wdonzelli at gmail.com>
 Will said:
>> Was the pre-flight check the entire justification for the receivers'
>> coffee-grinder tuning, or was it necessary that the pilots make
>> large changes in receiver tuning during missions when they would
>> receive orders to do so for tactical reasons?
>
>