Ross Phaser Chronology Guide
by Rob Strand

ColorMadeIdentifying Features
OrangeUSAIntensity Control
Non-script Phaser
One 14 pin chip AM9709, or,
4x P1087E JFETs solder to 14-pin DIP plug
Known unit 1978, S/N 21446
SCHEMATIC
OrangeUSARecycle Control
Non-script Phaser
One 16 pin chip AM97C11CN
Known unit 1979
P/N 405-0007-22, S/N 44861
SCHEMATIC
OrangeUSARecycle Control
Non-script Phaser
3 x 16 pin LM13600N chips
Known Unit
P/N 405-0007-42, S/N 70160
OrangeTaiwanRecycle Control
Heavy-script Phaser
3 x 16 pin LM13600N chips
Known Unit, marked R99
S/N 0214440
BlackTaiwanRecycle Control
Non-script Phaser
3 x 16 pin LM13600N chips
Known Unit, S/N 216979
SCHEMATIC
The schematic was e-mailed to me and I do not know its origin.
If the original provider of the schematic wishes, I will remove it.
** no year info available for LM13600N versions.

There are three known circuits and five known models.


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