FA Tektronix Signal generator
 

http://cgi.ebay.com/ws/eBayISAPI.dll...ME:L:LCA:US:31

This is a clean Tektronix Type 191 Constant Amplitude Signal Generator. The
generator covers from 350 kc to 100 mhz in seven band segments with one 50
khz output. Amplitude is controlled as well as output, from 5 mv to 5.0
volts. Also includes the power cord.