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Unbranded valves/tubes

Discussion in 'Electronic Repair' started by N_Cook, Jan 28, 2009.

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  1. N_Cook

    N_Cook Guest

    Where would they have come from ? some batch of other double tetrodes and
    markings removed ? all Chinese script so scrubbed off ?
    4 presumably ECC83 in a Laney (not originals) all test bad C/H leakage and
    bad/ low or marginally good gain. Not a trace of any marking , as low power
    valves, presumably no marking originally. They look like any other ECC83, no
    bad cut metal/ broken mica or any other indication of bad manufacture.
     
  2. I once knew a number of ways to 'raise' the lettering in those cases.
    Thanks to the ravages of time and the apparent death of important brain
    cells, I only remember one:

    Cool the tube and fog the surface with your breath.

    Others will be along soon to elaborate on their techniques.

    Jonesy
     
  3. Geo

    Geo Guest

    I have just carried out an inventory of my old (new) valve stock ex on-the-road
    service engineer. Quite a lot of them have no - partly visible lettering. I
    suspect this was due to our practive of removing them from their individual
    wrapping and carrying them in the vehicle in compartmented cardboard boxes.
     
  4. Arfa Daily

    Arfa Daily Guest

    ECC's are double triodes, not tetrodes.

    Arfa
     
  5. Rumors say, that some tubes from me-too-ers have been remarked
    to appear as from a high-quality producer.
    To be certain, you have to eliminate the "presumably"
    (by measurement?).
    Some ink seems to soften over time, so that even touching/handling
    rubs the marking off.

    Regards,
    H.
     
  6. N_Cook

    N_Cook Guest


    measured on avo tester with settings as ECC83.
    just tried looping ptfe tape around the envelopes and fingernail pressure
    but not the slightest lettering appeared.
    All the valves have an unusual cloudy appearance within the glass where the
    leads go through, so presumably all the same batch/make despite different
    impressed letter/numbers in the flat base glass sections of the valves. No
    Mullard type tiny code numbers on the envelopes.
     
  7. N_Cook

    N_Cook Guest



    Is your valid email
    m/e/a/[email protected],m,o,r,t,e.net
    without the intrusions?
     
  8. N_Cook

    N_Cook Guest


    I just got a rude bounce

    "host mx2.netbasix.net[74.211.131.251] said: 550 5.0.0
    Veryfast.biz-pedoChuck's mail not wanted here (in reply to MAIL FROM
    command)"
     
  9. N_Cook

    N_Cook Guest


    I just got a rude bounce

    "host mx2.netbasix.net[74.211.131.251] said: 550 5.0.0
    Veryfast.biz-pedoChuck's mail not wanted here (in reply to MAIL FROM
    command)"
     
  10. N_Cook

    N_Cook Guest


    my usual valid email address is
    .....m without the multi-dottiness
    but only for short messages, I would relay another non-public address for
    large files
     
  11. Eeyore

    Eeyore Guest

    Don't forget this is an N_Cook post !

    Graham
     
  12. Eeyore

    Eeyore Guest

    If they have bad leakage, where they came from is irrelevant, other than avoiding
    buying the same.

    Very likely ECC83 it has to be said.

    If they're stuffed, measurement won't help.


    Graham
     
  13. Eeyore

    Eeyore Guest

    He's using the free motzarella server so presumably from here

    Pinging motzarella.org [85.214.105.209] with 32 bytes of data:

    Which resolves here.

    inetnum: 85.214.16.0 - 85.214.139.255
    netname: STRATO-RZG-DED2
    descr: Strato Rechenzentrum, Berlin
    country: DE
    admin-c: CM265-RIPE
    tech-c: XX1-RIPE
    tech-c: WB14-RIPE
    status: ASSIGNED PA
    remarks: ***************************************************
    remarks: * Abuse Contact: in case of Spam, *
    remarks: * Hack Attacks, Illegal Activity, Violation, etc. *
    remarks: ***************************************************
    mnt-by: STRATO-RZG-MNT
    source: RIPE # Filtered
    person: Christian Mueller
    address: Cronon AG
    address: Pascalstrasse 10
    address: D-10587 Berlin
    address: Germany
    phone: +49 30 398020
    fax-no: +49 30 39802222
    abuse-mailbox:
    nic-hdl: CM265-RIPE
    remarks: see also: XX1-RIPE CM5081-NSI CM1-ABC SOUL-RIPE
    mnt-by: CRONON-MNT
    source: RIPE # Filtered
    person: Christian Xaver Mueller
    address: Cronon AG
    address: Pascalstrasse 10
    address: D-10587 Berlin
    address: Germany
    phone: +49 30 398020
    fax-no: +49 30 39 802-222
    abuse-mailbox:
    nic-hdl: XX1-RIPE
    remarks: see also: CM265-RIPE SOUL-RIPE
    mnt-by: CRONON-MNT
    source: RIPE # Filtered
    person: Wilhelm Boeddinghaus
    address: Strato Rechenzentrum GmbH
    address: Pascalstrasse 10
    address: D-10587 Berlin
    address: Germany
    phone: +49 30 39802-0
    fax-no: +49 30 39802-222
    nic-hdl: WB14-RIPE
    remarks: see also INTERNIC: >WB131<
    mnt-by: CRONON-MNT
    source: RIPE # Filtered
    % Information related to '85.214.0.0/16AS6724'
    route: 85.214.0.0/16
    descr: Strato Rechenzentrum
    origin: AS6724
    mnt-by: STRATO-RZG-MNT
    source: RIPE # Filtered


    Unfortunately if you put "Christian Muller" and P(a)edophile into a Google
    search it returns a number of results.

    E.g.
    http://groups.google.com.py/group/news.admin.net-abuse.email/browse_thread/thread/165c9c1fed2394d5

    Doubtless innocent enough but might explain the auto-reject.

    Graham
     
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