Oops, typo, that should be 454 of course

Nuvistor is a twist on New Vista, RCA's trade name for the early 60's color sets. Big problems in the day getting color reception in fringe areas, the lower noise floor of the tuner sold a lot of

Six 8393s were used in the original release of the Tek 453 in the inputs to both channels and in both trigger generators and both sweep generators. All six were replaced by FETs in the second version

It was RCA who developed them - they were first announced by RCA in 1959. They were developed by RCA as a rugged, very compact, and very high performance line of tubes to compete with early

Yes, see George M. Rose Jr.'s 1961 patent, which was called an "electron tube"... which it was and is... a unique (at least to the U.S. Patent Office) miniature version of once relatively common metal

I have a 453 and a 464 with nuvistors. Never had to replace them although I do have some spares (somewhere). -- Paul Amaranth, GCIH | Manchester MI, USA Aurora Group of

Pardon a memory lane trip: I've been interested in tubes since the mid-1950's when I got my first radio - a 1930's Atwater Kent with tube types 27 and 47. IIRC (if I remember correctly): It may well

I have an 11402 (as backup), a 11403A (my scope for regular use) and a CSA803A with software upgrade to the CSA803C, i.e. no prescaler upgrade. Kind regards, Gerard Janssen

I've started out in the 60's working on TV's many RCA sets used nuvisters in the tuners and in other RF applications. I can't remember ever having found a bad one.

Hi , sorry to but in but I think Tek have got it right . The scope has no idea if the voltage measured is from a hi-impedance current limited source or a low-impedance constant voltage source with

Hi Ed, I think you missed my main point, the photo diode is quite high impedance. The problem is, that at 1M impedance I get 5+ Volts on the input, decreasing to 4 mV when switched to 50 Ohms. But

The 567 mainframe itself doesn't contain any nuvistors, however, the usual 6R1A digital unit contains two (6CW4) nuvistors on the memory board. The 6R1A is also the location of the Nixie's. (4 numeric

I forgot: both DSAs have the 4C option.

Hi all, I re-checked both my DAS602 (without A, unfortunately): #1 (doing partial enhanced accuracy at each startup) Executive 2.2, Digitizer 2.2, Display 2.3 11A34 with F3.3 11A72 with F2.11 11A33

When the photo diode output is connected to 50 ohms vs 1megohm, I would expect the voltage to drop unless there is an amplifier in line. And even if there is, it would have to have a low output

Hi to All, A reply of Hakan Hintze on an earlier Post: " FYI, a newer 2 volume Service Manual which replaced 070-3919-00 was available from March 1988. P/N 070-6965-00 and 070-6966-00. /Håkan

Hi, My DSA602A (B051047) with FW 2.2 does the same during Start-Up. Till now I thought is has to do with the missing extra NVSRAM. But now it seems it doesn't. Modules are fine. Greetings, Egge

Yes I have a 11402 and a 11401 and I can fit the 11A34, 11A52, 11A72 and 11A71 between the 2 as needed. Mitch N4MF

I am replying in this thread as I have some recollection that the Tek 567 had Nuvistors in it. Do any of you have experience with a 567? I've heard stories that some that turned up for low prices were

I've been (virtually) leafing through the issues of the RCA Engineer https://worldradiohistory.com/ARCHIVE-RCA/RCA-Engineer/1964-04-05.pdf Some details on the Nuvistor on page 8 of the magazine,