[time-nuts] HP 106B quartz frequency standard...the story

Jim Palfreyman jim77742 at gmail.com
Tue Aug 11 06:53:06 UTC 2009


Got my 2N1701 in a T08!

Ebay won the day. Two for $20 plus $5 postage. Much more reasonable!

Regards,

Jim


2009/8/11 Don Latham <djl at montana.com>:
> wow. Same thing is happening to ebay. shipping is simply killing a lot of
> small stuff I like...
> Don
>
> ----- Original Message ----- From: "Jim Palfreyman" <jim77742 at gmail.com>
> To: "Discussion of precise time and frequency measurement"
> <time-nuts at febo.com>
> Sent: Monday, August 10, 2009 7:37 PM
> Subject: Re: [time-nuts] HP 106B quartz frequency standard...the story
>
>
>> Yep this is where I found it too. Looks like an excellent shop. US$22
>> postage is steep too.
>>
>> Jim
>>
>>
>> 2009/8/11 Don Latham <djl at montana.com>:
>>>
>>> Also, the following:
>>> http://www.sphere.bc.ca/test/
>>> is one of the best spare parts sites for test equipment that I know of.
>>> they're good folks.
>>> Don
>>>
>>> Jim Palfreyman
>>>>
>>>> Hi all,
>>>>
>>>> The transistor in my unit (not a 4B model!) is 1854-0015. Lots of those.
>>>>
>>>> If someone can confirm this is identical to 1854-0003 I'll use it.
>>>> Otherwise I may have to take up one of the very kind offers!
>>>>
>>>> On the 2N1701 - it has to be in a T08 package. This transistor sits in
>>>> a special heat sink that is bolted to the oven wall. So unfortunately
>>>> I can't substitute.
>>>>
>>>> Regards,
>>>>
>>>> Jim
>>>>
>>>>
>>>> 2009/8/11 ron hunt <resolver99 at hotmail.com>:
>>>>>
>>>>> Hi!I Have The Exact 1854-0003 HP Part.If You Still Need It I Will Be
>>>>> Happy To Send It No Charge.I May Need Some Help Some Day.Let Me Know
>>>>> Your Shipping Address.
>>>>>
>>>>>> Date: Sun, 9 Aug 2009 19:15:33 -0600
>>>>>> From: djl at montana.com
>>>>>> To: time-nuts at febo.com
>>>>>> Subject: Re: [time-nuts] HP 106B quartz frequency standard...the story
>>>>>>
>>>>>> carefully crack open the old to8 can to expose the leads internally,
>>>>>> strip
>>>>>> out the old transistor and cobble the to220 on top with appropriate
>>>>>> leads.
>>>>>> The to220 should fit under one of the old mounting screws? one
>>>>>> direction
>>>>>> will give the base and emitter connections properly.
>>>>>> Don
>>>>>> Jim Palfreyman
>>>>>> > Thanks for that! - I do have a number of the 5254L units and one of
>>>>>> > them is now being eyed off for organ donation. So thanks to all
>>>>>> offers
>>>>>> > for the 1854-0003.
>>>>>> >
>>>>>> > The 2N1701 in a T08 is my next quest...
>>>>>> >
>>>>>> > 2009/8/10 Dave M <masondg44 at comcast.net>:
>>>>>> >>> Hi all,
>>>>>> >>>
>>>>>> >>> Latest update.
>>>>>> >>>
>>>>>> >>> With some help and phone calls from Bill the fault seems to have
>>>>>> been
>>>>>> >>> isolated. I have removed Q11 from inside the oven and it is >>>
>>>>>> >>> cactus.
>>>>>> Q9
>>>>>> >>> is also very suspect so I'm going to replace that for good >>>
>>>>>> >>> measure.
>>>>>> >>>
>>>>>> >>> Q9 is a 2N1701 in a T08 package. Thanks to various people I should
>>>>>> be
>>>>>> >>> able to track one down. Q11 is marked as 1854-0003 and that's an
>>>>>> >>> >>> HP
>>>>>> >>> internal number and all I know. Might have to substitute that one.
>>>>>> >>>
>>>>>> >>> After all this I have some quality photos and can knock up some
>>>>>> good
>>>>>> >>> descriptions of the repairs and the 106B internals if anyone is
>>>>>> >>> interested. Any websites hanging around that want to take what I
>>>>>> have?
>>>>>> >>>
>>>>>> >>> Regards and thanks to all!
>>>>>> >>>
>>>>>> >>> Jim Palfreyman
>>>>>> >>>
>>>>>> >>>
>>>>>> >>
>>>>>> >>
>>>>>> >> Jim, the 1854-0003 is a pretty common HP part in older eqpt. If you
>>>>>> >> have
>>>>>> >> junked 5245L counter handy, it's full of them, especially in the
>>>>>> decade
>>>>>> >> counter PCBs. If you don't have one handy, I have an assembly here
>>>>>> with
>>>>>> >> 8
>>>>>> >> of them on it. If you like, I can send it right away (if you're
>>>>>> outside
>>>>>> >> the
>>>>>> >> USA, you pay postage).
>>>>>> >>
>>>>>> >> Dave M
>>>>>> >> masondg44 at comcast dot net
>>>>>> >>
>>>>>> >> I went to a bookstore and asked the saleswoman, "Where's the
>>>>>> >> self-help section?" She said if she told me, it would defeat the
>>>>>> >> purpose.
>>>>>> >>
>>>>>> >>
>>>>>> >>
>>>>>> >>
>>>>>> >>
>>>>>> >> _______________________________________________
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>>>>>> >>
>>>>>> >
>>>>>> > _______________________________________________
>>>>>> > time-nuts mailing list -- time-nuts at febo.com
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>>>>>>
>>>>>>
>>>>>> --
>>>>>> Dr. Don Latham AJ7LL
>>>>>> Six Mile Systems LLP
>>>>>> 17850 Six Mile Road
>>>>>> POB 134
>>>>>> Huson, MT, 59846
>>>>>> VOX 406-626-4304
>>>>>> www.lightningforensics.com
>>>>>> www.sixmilesystems.com
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> time-nuts mailing list -- time-nuts at febo.com
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>>>>>
>>>>> _________________________________________________________________
>>>>> Get free photo software from Windows Live
>>>>>
>>>>> http://www.windowslive.com/online/photos?ocid=PID23393::T:WLMTAGL:ON:WL:en-US:SI_PH_software:082009
>>>>> _______________________________________________
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>>>>
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>>>
>>> --
>>> Dr. Don Latham AJ7LL
>>> Six Mile Systems LLP
>>> 17850 Six Mile Road
>>> POB 134
>>> Huson, MT, 59846
>>> VOX 406-626-4304
>>> www.lightningforensics.com
>>> www.sixmilesystems.com
>>>
>>>
>>> _______________________________________________
>>> time-nuts mailing list -- time-nuts at febo.com
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>>
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