[Premium-Rx] Final group of early CEI data sheets

[Terry O']

Twelve data sheets have been added to http://Watkins-Johnson.terryo.org 
covering most of the 300 series of early radios that Communication 
Electronics, Inc designed and built prior to and shortly after their 
acquisition by Watkins-Johnson. These radios covered HF, LF, VLF and/or ELF.

These data sheets cover the 301A, 301A-1, 302, 351, 352, 353, 354, 355, 
356, 357, 371A, 373A and 377A radios.

Many of these were wideband receivers intended for RFI testing, Tempest 
and subcarrier intercept. The notable except is the 357 which most often 
came with the narrow bandwidths one would expect for receivers in these 
frequency ranges. Not included is the developmental data sheet for the 
358 receiver, which when finally developed was sold as the DMS-105 
demodulator.

Added to the 500, 700 and 900 series already on the site, this completes 
the collection of data sheets for early CEI radios.

Best,
Terry O'
watkins-johnson at terryo.org
http://Watkins-Johnson.terryo.org
http://BlackRadios.terryo.org
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