[Collins] Transistor Question

[pete wokoun, sr.]

Dave,
  Yes, page 15 had a typo in the html code, now corrected.  Thanks for the 
beta test, HI!
pete


>From: "Dave Brown" <tractorb at ihug.co.nz>
>To: <Collins at mailman.qth.net>
>Subject: Re: [Collins] Transistor Question
>Date: Sun, 3 Jul 2005 13:11:27 +1200
>
>Thank for the tubester info, Pete- been looking for that for some time- I 
>had it all here a few years back but it's disappeared somewhere!
>There seems to be a problem with page 15-redirects to adverts. Might be 
>just me???----
>
>73
>Dave, ZL3FJ
>
>----- Original Message ----- From: "pete wokoun, sr." <pwokoun at hotmail.com>
>To: <collins at mailman.qth.net>
>Sent: Sunday, July 03, 2005 12:10 PM
>Subject: Re: [Collins] Transistor Question
>
>
>>Hello List,
>>  I just recently stuck the circuits from my tubesters onto my website.  
>>You can find them at:
>>
>>http://www.qsl.net/kh6grt/page4/tubesters/tubesters.htm
>>
>>For some of the house number semiconductors, I was guessing at their 
>>function since, like Jerry said, you can't find equivalents or even data 
>>for them anywhere.
>>
>>73s, pete KH6GRT
>>
>>
>>>From: Gerald <geraldj at ispwest.com>
>>>To: collins at mailman.qth.net
>>>Subject: Re: [Collins] Transistor Question
>>>Date: Sat, 02 Jul 2005 17:46:07 -0500
>>>
>>>On Sat, 2005-07-02 at 17:35 -0400, Merle wrote:
>>> > Hello to the list.
>>> >
>>> > I have a transistor I can not identify, wonder if anyone on the > list 
>>>has
>>>the information on this guy..??
>>> >
>>> > It is out of a " tubester "  that some people used in their > Collins
>>>radios back a while ago.
>>> >
>>> > The numbers on it are: AT 5058 and on the other end of it is > another
>>>number T 1402C or it might be TI  402C  anyway it is not in any of my 
>>>reference books ! Any help would be appreciated.
>>> >
>>> > 73 and thanks
>>> > Merle W1GZS
>>> >
>>>Without looking in older reference books, I'm fuzzily recalling that the
>>>AT 5058 was the high voltage transistor essential to the tubester
>>>operation. It went out of production with no comparable part being made
>>>anywhere in the world (much like the US made double gate MOSFETs) which
>>>caused tubesters to go out of production. With nothing comparable it
>>>won't show in modern cross reference lists.
>>>
>>>Tubester circuits and parts lists were published in QST once upon a
>>>time. I'm sure that QST is here somewhere.
>>>--
>>>73, Jerry, K0CQ, Technical Advisor to the CRA
>>>All content copyright Dr. Gerald N. Johnson, electrical engineer
>>>
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>>>
>>
>>
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