Tektronix 5L4N Spectrum Analyser Not Tested For Parts

Tektronix DC503A 125Mhz2 channel Frequency Counter/Timer Plug In

Tektronix 7B53A 100 MHz dual time base plug-in for 7K series oscilloscopes

Tektronix DC 509 Universal Counter/Timer

Tektronix PG 502 Plug-in, Guaranteed.

Lot Of 2 Tektronix 5B10N; 5B12N, 5A26 PLUG IN MODULES

PARTS! Vintage Tektronix Oscilloscope Plug-Ins 7B50 & 7B50A (UNTESTED)

T1 - Tektronix Plugin lot 7B85 + 7B80 Opt002 + 7B80 Opt002 - Tested Working