I have several V-7A's cleaned up and "calibrated". But my favorite is a General Radio 1806A with a big mirrored meter and AC capability to > 1500 Mc/s(1.5GHz). I also use a Simpson 260 to monitor vary

The 74HCT112 is only guaranteed for 24MHz clock. The 74S112 is rated for 80MHz minimum. The 74F112 is rated for 100MHz min.

Although I have no direct knowledge of this power supply, I have worked on a number of SMPS. A MOV will always fail short, since it's purpose is to protect the line side semiconductors from a voltage

With my recent acquisition of a 2465 my 475A has become redundant. It has served me well for the last 2 years after being stored for more than a decade. The 475A sn B020584 is in good working conditio

https://boston.craigslist.org/nwb/ele/d/nashua-tektronix-543-oscilloscope/7084582967.htmlhttps://boston.craigslist.org/nwb/ele/d/nashua-tektronix-543-oscilloscope/7084582967.html I have no affiliation

A success story! About 3 years ago I saved a 2221A from the dumpster, it had been out of service for over a decade after failing calibration. Brought it home and fired it up. It worked really well as

7B50 primarily working. there is a problem with the readout at sweeps 5uS and faster, reads 1000x faster that is 5uS reads as 5nS amnd 50nS reads as 50pS. 7B50a again primarily working, the display mo

I found this ad on CL. the parts are located near Albany NY. https://nwct.craigslist.org/ele/d/troy-vintage-tektronix-test-equipment/6973803052.html

All Found this offer for a 556 on CL for $100. It is in the Boston area. https://nh.craigslist.org/ele/d/salem-tektronix-556-oscilloscope/6959447984.html I have no knowledge of this person Ron

Dennis I should have been more precise, I didn't mean to imply that the 7A26 had differential inputs but that the internal signal path was differential. If you look at the block diagram in section 7 o

although I have no specific knowledge of the 7A26, in differential amplifiers if one side is dead then the gain is exactly 1/2 what it should be.