[R-390] none genuine without these numbers...

[David Ross]

390folks -

  This reflector has been entirely too quiet lately.  Against Hank's
advice, I will now try to separate the flys??t from the pepper.

  The 1960 Collins General Catalog states, on page 82, under the
category "TUBE SHIELDS", "Collins 66J Heat Reducing Tube Shields can
lower bulb hot spot temperature rise above ambient to as low as 55% of
former values".

  The catalog further lists:

*******
Collins Shield     Equivalent     Height     Tube
Type Number           JAN           of       Size
(includes          Shield No.     Shield
 shield, corru-
 gated liner &
 base liner)

  66J-1            TS-102U01       1 3/8   7 pin short
  66J-2            TS-102U02       1 3/4   7 pin medium
  66J-3            TS-102U03       2 1/4   7 pin large
  66J-4            TS-103U01       1 1/2   9 pin short
  66J-5            TS-103U02      1 15/16  9 pin medium
  66J-6            TS-103U03       2 3/8   9 pin large
*******

  Anyone seen any tubeshields with this "66J-?" designation?  No doubt
now worth millions on egad...

Dave Ross    N7EPI