I'm curious why transformers (in particular, this transformer) benefit from a coating - beeswax or otherwise. Is it to damp sympathetic vibration at the operating frequency/frequencies? Thanks, Barry

The 6DJ8 is a 6-volt version of the very expensive 8416. I assume a mod as simple as adding the appropriate resistor to the heaters. Has anyone done this before? -- Respectfully, Cliff White, W5CNW w5

Hi all, I recently acquired a *very* interesting Type 1S1. It is serial number B 11, and seems like it is very likely to be a prototype. It's in very nice shape physically, but has serious electrical

I have an 492BP, and a GPIB to USB National Instruments. Can I use the HP 7470A plotter program to save screens? I tried and I get error borad GPIB0 not found.

Hi guys, my first post here. I have been given a Tektronix 2230 scope. The previuos owner could remember het go it from somebody else, and there was something about a fuzzy readout. I always find it a

Hi all sampling gurus, I am continuing performance check of my 7S14 (B020274). Any idea how many pieces were manufactured? All the Hg cells were empty (and were leaked also). I replicated with the con

I have used Tektronix scopes since the 60s. They have always been the gold standard, at least as far as I am concerned. Now my old Tek scopes, I have 4, are getting old and keep requiring service. The

Kurt Rosenfeld has posted the entire line printer listing (454 pages) of the 1982 source code version 1.02 for the 7854. It's an early release but it reveals some interesting things.

Hello group. I have a 2205-40 that I use to repair tube amplifiers and other simple audio stuff. Everything works perfectly on the scope except for the SGL SWP trigger. I haven't yet opened up the sco

I feel like this has been discussed before, but I cannot find the thread now. Does anyone know of a solution for the 7104 readout not displaying except in "pulsed" mode when slaved to the gate (also w

I have a dead 2782 spectrum analyzer. I had a wierd screen and was looking around the video stuff. When I tilted it on it's side and it shut off and won't power up anymore.

Hello all, I was thinking about this and this why these Simpsons are important to me. When I joined the AF I became a Ground Radio Serviceman. One the instruments that I learned on was a Simpson 260.

Running an up-hacked TDS3014B, and am seeing small amount of what I'll call "ripple" on the top of the calibrator signal (i.e. the 5V part of the signal - the 0V end is relatively stable by comparison

Sometime ago I bought a sealed copy of this Tek software: WSTRO & WSTRU WaveStar Software for Oscilloscopes, WSTRM WaveStar Software for Meters. The label on the back says v2.4 Tek part number 020-235

Hi, everyone. I've been working on a Tektronix 606A XY Display but the unit resists all my repair attempts. So, I'm reaching out to this group for suggestions and assistance. I've documented my proble

I wrote a few weeks ago about no Horizontal trace on my TEK465. In the meantime I have replaced bad caps and transistors to the point where I have a sweep signal going to one of the CRT grids. I do no

That's the hybrid containing the six microscopic Schottky diodes for an S-4 sampling head. Is there any source for a replacement, or is there someone who has the tools to replace individual diodes? Go

Dear Forum, I have an old Tek TLA700 Logic Analyzer complete with software disks: Application V 3.2 - 063-3022-04 ( 2 x CDRom ) Controller BIOS 1.00.14 for TLA704/711 - 063-2895-02 (1.44 Floppy) W98 B

I mailed all of the international orders for Peter Keller's book today with the exception of the five going in one package to the United Kingdom via UPS. Those will be mailed as soon as I get the pape

Is there a resource for the sockets that are soldered into the PCB boards in scopes with plug-in transistors, ICs, diodes, etc.? Dave