SP-600 Super Pro Question

[David Hollander]

Hello - I have a Super Pro SP-600JX which as an addition which I am 
guessing may have been a repair depot add-on.

Their is a switch in the lower left hand corner where the limiter switch 
is on an unmodified unit. This switch is than wired to a 4 tube module 
under the chassis.

The switch has the the following positions - off, AF Lim, Voice and CW.

Has anyone seen this mod before and if so what exactly is it?

Here are links to the three photos:

http://members.cox.net/radiostuff9/sp600jx17.jpg
http://members.cox.net/radiostuff9/sp600jx29.jpg
http://members.cox.net/radiostuff9/sp600jx178.jpg

Tnx and 73,

Dave N7RK
-- 
***********************************************************
Dave  N7RK          Boatanchors Home Page: http://members.cox.net/n7rk
Phoenix, Arizona         *DXCC Honor Roll*    *WAZ#22 - 75 Meter SSB*

ex-XE2/N7RK, N7RK/ZB2, VK2ERK, ZM0AJN, WB6NRK, WN6IWX

Boatanchor and Antique Radio Collector

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