[ARC5] BC-221 and LM Solid State Conversion

[J. Forster]

If anybody is interested, there is a parts guy who shows up at most every
MIT Flea Market and has all sorts of tube plugs and sockets. I'm pretty
sure he had a box of the octal ones last month. He does NOT do mail order
or internet sales, PERIOD.

The last MIT Flea of the season is a couple of weeks away. If you want
something, let me know, off list.

Best,
-John

=============



> (The original post was about the article that tells how to convert an
> LM or BC-221 frequency meter to solid state)
>
> On Sep 30, 2009, at 10:15 PM, Michael Tauson wrote:
>
>> On Wed, Sep 30, 2009 at 3:31 PM, Roy Morgan <k1lky at earthlink.net>
>> wrote:
>>> YEs, as I remember that article, you break the original tubes
>>> (NOOOOO!!!) and put FET's into the bases..
>>
>> Oh, yes, yes, yes.  Must break old tubes.  It's like swapping out
>> those icky old parts from icky old radios and replacing them with nice
>> modern parts,
>
> WHACK,, WHACK!
>
>> Actually, being serious for a rare moment,
>
> Ah, <Spoof Mode OFF>
>
>> a few places sell the UX
>> type plugs though they're not always easy to find.
>
> I have a  modest small box marked "DUDS".  in there are a few tubes of
> different sorts that really are duds.
>
> BUT.. My LM tubes seem to be fine, and I have a number of spare tubes,
> among which likely I'd find a good replacement if/when I need one.
>
>>  Octals are a lot
>> easier - even the e-place has them for relatively cheap.
>
> It may be somewhat blasphemy for the glowbug and ARC-5 crowd, but I do
> have a couple of boxes of what appear to be "pulls" from octal tube TV
> days.  For sure I can find really dead octal tubes here - I don't know
> about the older base types.  I did recently unearth my (most-used)
> tube tester so I can confirm deadness before any smashing.  I know I
> have some really dead 866's but I'm quite reluctant to smash mercury
> vapor tubes.
>
> In any case, I have enough LM's that I can find a couple or three that
> run just fine.  More than that I may not "need".
>
> (If anyone on the list does NOT have an LM, do let me know.  I am
> entering a de-accession phase.)
>
> Roy
>
> Roy Morgan
> k1lky at earthlink.net
> 529 Cobb St.
> Groton NY, 13073
> Home: 607-898-3607
> Cell: 301-928-7794
>
>
>
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