[AMRadio] R-388 / 51J Versions

[BSugarberg]

Hello,

Military R-381 is similar to Civilian 51J-2 (16 tubes).

Military R-388 (Same as R-388/URR) is similar to Civilian 51J-3 (18 tubes).

Military R-388A (Navy) is similar to Civilian 51J-4 (19 tubes, Mechanical 
Filters).

73, Bruce WA8TNC
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JT Croteau wrote:
> Is the R-388/URR the same as a "R-388" and a "51J-4"?
> 
> Thanks