Charlie, Unless you have specific reason to suspect that capacitors are failed I would leave them alone (except for very specific cases: e.g. RIFA safety caps); "if it ain't broke, don't fix it!" In

And checking your ebay search results email notifications early in the morning, hopefully before most people with similar searches get to it, and sometimes you will be rewarded by finding among the

I have a big bunch of 22/21A /30/32. ( Big #1) replace the line filter! (2) Check the resisters in the focus string. FWIW I have never really needed to replace any of the filter

I agree with trying more conventional (non-ionic surfactant) cleaners first, and possibly limonene (citrus) - based cleaners. If it turns out that you need to up the intensity, you may want to look at

Quite a bit of my space program stuff was acquired at the various NASA sales or from surplus/scrap dealers who bought lots at these auctions. Back in the day DoD surplus handled some of the surplus

For the interconnects in the TM500 power modules I don’t think anything like the Peltola connectors are necessary. The jumper wires in the kit for Option 2 just terminate in pin connectors. If the

Been there, done that, with screwing and unscrewing SMA connectors until my fingertips were numb.  In one case, VSWR and power levels weren't critical, so I attached the blindmate versions for quick

Hi Renée, This sounds really good. Actually I have recovered a un-opened gallon of 409 from the garage which was largely intact. Too bad the ‘scope wasn’t stored there. There is a lot of work

Cory, Regarding Tek temperature probe prices, a bit of patience and saved searches on eBay can get you a good deal. For example, I picked up three Tek temperature probes for just over $USD 50 in May.

The rear interface output of the SG 502 will be connected to the rear interface input of an AA 501A located adjacent to each other in the TM 504 frame. Is it necessary to use coaxial cable for this

Hi Gary, I absolutely agree. Actually, I bought a VW once upon a time that had been in a flood. It had multiple issues including ECU and sensor problems. If I were to sell this ‘scope, its history

I'm sorry that I don't quite know what you mean by "indicated". Could you expand on that? If you mean "identified", that's easy. Take a look at the tekwiki page I linked to and you'll see a drawing

I have a 7854 on the bench that is in need of a calibration. It is known to be off. I have most of what I need to calibrate the scope except the 67-0912-00 Analog test card. This card is used in the

Lots of wonderful information. Thanks, all. The 101-level question I now ask is at what point would such cable be indicated? For the SG 502? The FG 502? Both? Cory Oace

I live quite near KSC (Kennedy Space Center) and NASA stuff is COMMON around here. KSC used to have monthly auctions where they auctioned off a warehouse full of everything that you can imagine. Next

The standard cable was good old generic RG-174, which is 50 ohms. -- Cheers, Tom -- Prof. Thomas H. Lee Allen Ctr., Rm. 205 350 Jane Stanford Way Stanford University Stanford, CA

I can't say regarding Tek gear but I have an HP-67 that went through a house fire. It was in it's original plastic box and about 2 inches in one corner of it melted and one small corner of the HP-67

Ah, yes! I had forgotten the name. Thanks. I still don’t know the characteristics of that coax. Perhaps I will get a chance to measure them someday. DaveD

I corresponded with them about a month ago. At that time, most likely reopening will occur in late September. They -are- coming back. That much is definite. Just don't know when. -- --- Bruce

See https://w140.com/tekwiki/wiki/Peltola_connector Ron Peltola devised this clever interconnect solution. Cheers Tom Sent from my iThing, so please forgive brevity and typos