[R-390] Unusual ? Front panel

[k2cby]

What R-390A version/contract had the words "UPPER"  "BFO"  "LOWER"
stenciled where the BFO frequency normally appears and the words "AM"  "CW -
SSB" stenciled where "BFO OFF-ON" normally appears on the front panel? Was
this an "after-market" conversion? Who were these units sold to? Foreign?
Spookdom? How many were produced? Does it indicate that the BFO was
crystal-controlled? Was there a product detector included? Has anybody got a
print?

 

Miles B. Anderson, K2CBY
16 Round Pond Lane
Sag Harbor, NY 11963
Tel.: (631) 725-4400

Fax.: (631) 725-2223
e-mail: k2cby at optonline.net