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

Jim Palfreyman jim77742 at gmail.com
Tue Aug 11 01:37:29 UTC 2009


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.
>>>> >>
>>>> >>
>>>> >>
>>>> >>
>>>> >>
>>>> >> _______________________________________________
>>>> >> time-nuts mailing list -- time-nuts at febo.com
>>>> >> To unsubscribe, go to
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>>>> >> and follow the instructions there.
>>>> >>
>>>> >
>>>> > _______________________________________________
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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
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
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>



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