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

Don Latham djl at montana.com
Tue Aug 11 04:07:15 UTC 2009


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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>>
>>
>> --
>> 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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