Re: [time-nuts] time-nuts Digest, Vol 184, Issue 13
Paul, To me it appears that "A" frame supporting half of the wire is a spring. It only makes sense the designers would want some axial tension. The "A" frame shape would supply axial load while providing excellent radial stability in all directions. (If this isn't the case, why is that support so thin???) If you look close here, I think you'll see what I'm talking about: http://www.rdrelectronics.com/skip/CS-tube/cstube7.jpg Look close at the wire, both halves are no longer in the same plane, and are no longer parallel. Again, most likely not repairable due to the spring tension (or missing wire!). That said, If it were my tube I'd have a hard time not wasting a few hours with a capacitor and mallet. Nothing to loose but a little time! Dan On 11/14/2019 12:00 PM, time-nuts-requ...@lists.febo.com wrote: Message: 1 Date: Wed, 13 Nov 2019 10:05:32 -0500 From: paul swed To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] time-nuts Digest, Vol 184, Issue 13 Message-ID: Content-Type: text/plain; charset="UTF-8" Hi Dan at least the pictures I have seen are that the ionizer is a thin ribbon. I have not seen a filament style ionizer for cesium beam tubes. Regards Paul WB8TSL ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
Re: [time-nuts] For sale PCBs for the HP 5370 Time Interval Counter Processor Replacement Project
The SMD sets for the HP 5370 Processor Replacement PCB have gone, provided that everybody who expressed his interest takes them. I answered all mailed requests (send before Nov. 14, 22:40 MEZ). In case you have no answer please check your spam. ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
[time-nuts] Confusion over Thunderbolt - noob is going crazy
I hope I don't get yelled at for asking this question. I honestly looked everywhere and still can't get this. I have several GPSDO but I don't have a TRUE Thunderbolt. I want one. So I started looking. There seem to be infinite variations of them. So far (I have been looking for a week), there are no good summary (or even a summary) of various types and how they are different. I know there is a thin type that looks to be 1" or so thick, and thick type that is about double that.I know thick type can have blue label with current Tbolt E, or red label (read somewhere this is an earlier one?) I know there is a type that contains inferior oven and better one. (Marked Trimble)I know there is a type with F connector for antenna, and there is one with BNC.I know there is an early type and late type. (I don't know how to tell)I know the latest one is T-boltE, which is not necessary similar to earlier ones.I know there is a type that requires single voltage and 3 sources. What I don't know is: How many different types are there.Any particular one to avoid? I know there were some experiment done with replacing OCXO of earliest type.Why form factor change? OCXO does not seem to be any tallerSpending $1500 for new one is out of question, but price seems to vary from $150 to $500 for used ones. Since most of them come from China, I'd think they are reclaimed equipment. Is this assumption right? Any reliable source? I am a bit skeptical with the market the way it is.Are they all telecom quality? Thank you very much. --- (Mr.) Taka Kamiya KB4EMF / ex JF2DKG ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
