Yes, it is usually annealed in an inert atmosphere after working. This isn't very practical for individuals, and probably not necessary unless you insist on it...
I don't think Art did the 608. The 608 came out in 1950, 9 years before the 606, and they don't seem to me to have the same design style. The 1950 608A/B and...
Thanks Ed, that's good to know. I won't let my inability to anneal it put me off. I have tried sheet metal in another connexion, my prototype Tektronix...
Gene, Try asking for a 578 on the EIP_Microwave list. They are very good instruments. ... W-J made a 1250 which is sparsely docdumented. It was a phase locked...
I'm a bit reluctant to join this fray, but have you absolutely ruled out the possibility of hum produced by a tube filament? Also, is there any possibility of...
I disconnected the power transformer and ran the instrument off an external one. Hum gone. You can also warp the frequency just by bringing a magnet near the...
Thanks to all for your comments. I measured all of the biasing resistors within the RF cage and they are within 5% of nominal values (the resistors are marked...
... After trying several replacement FETs without any success a member of this group supplied me with an original HP 1855-0082. It solved the problem and the...
It shouldn't generally be visible on a scope. If the source had -70dBc spurs, that would be 1 part in 3000, orders of magnitude smaller than a scope can see....
I bought one of Pete's NIB 5334B's and it arrived today. Untouched since it was packed in 1991. A beautiful piece of equipment. So, that means my old 5334B is...
Hi Joe, By mass terminated, I mean the header and DB-25 connectors are of the type where you insert a flat ribbon cable and compress the connectors in a press...
Hello all, I have a have failed A5 EVENT board, part number 05372-60005 Problem is IC Zero Dead time counter, A5U41, HP house part number 05371-80046 Does...
Dick, Glad you like it ... and use it in good health. You should have no trouble selling yours as that is a super low price. Thanks, Pete WA2ODO ... -- ...
Hello, my hp8673D signal generator rf stopped giving out, I climbed up to the multiplier YTM from 2-26 GHz output should give +15 dbm-5dbm alone but if someone...
I ran some more tests using an 86222 YIG based sweeper in CW at 100 MHz. The waveform on the HP54540A jiggles. It's hard to explain it otherwise, you need a...
If the actual signal is OK, then maybe on a DSO you're seeing the discreteness of the horizontal, depending on sampling rate vs. signal frequency - kind of...
... My 54510A does the same as does my Tek TDS210 (at lower frequencies) though it shows as a thicker, noisier trace on the Tek. I can see the jiggle by doing...
I bought one of Pete's NIB 5334B's Mine arrived friday (yesterday evening Unopacked today and a quick test shows after 5 min warm up my frequency standard (not...
The real beauty of having tube equipment is that you can usually fix it one stage at a time. Carbon resistors have already been mentioned and it is well worth...
I could only find the HP54540A specifications online and not the manual but I ran some tests and have an idea. What sampling mode is your HP54540A set to? On...
Jay, Thanks for the info and offer. I may have all the parts to do that except the DB25 connector. I'll have to take a look at my parts. I still do not have...
Thanks David, it was set to Real Time Auto and if I set it to Repetitive (Equivalent Time) I get a (slightly noisy) rock stable sine wave. Real Time: I can...
