[Elecraft] Crystal Clear book

[N2EY at aol.com]

In a message dated 6/12/07 6:34:31 PM Eastern Daylight Time, gibson at alma.edu 
writes:


> because radios without crystal control drifted badly, which made net 
> operation 
> difficult and also made it impossible to assign closely-spaced radio 
> channels.
> 

I don't think that was the reason for crystal control.

The WW2 "ARC-5" HF sets were not crystal controlled, and they were used in 
net operations. Same for the BC-191/375 and ART-13 sets, and many others.

I think the big reasons for crystal control was to eliminate the need for 
tuning either the receiver or transmitter, and to eliminate the need for a 
trained radio operator. The BC-611 walkie-talkie is the extreme example.

73 de Jim, N2EY


**************************************
 See what's free at 
http://www.aol.com.