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I scored a TM503 with a TG501 and SG503 and would love to add a 506A to have nice calibration set. Send me a message and let me know! Thx. I'm in NJ.

SG 503, often needs main frequency range C'AM switches fixed.

Requires special Tek cable for cal into 50 ohms

SG504 needs à leveling head

PG 506 rare and costly, see epay. Often needs repair or cal
PG506A can be $700..2000 see epay

The TM 5000 mainframe takes a 3-4 wide CG5110 that combines the functions of all the TM 500 plugins for cal

Bon chance

J