wow. Same thing is happening to ebay. shipping is simply killing a lot of
small stuff I like...
Don
----- Original Message -----
From: "Jim Palfreyman" <[email protected]>
To: "Discussion of precise time and frequency measurement"
<[email protected]>
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 <[email protected]>:
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 <[email protected]>:
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: [email protected]
To: [email protected]
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 <[email protected]>:
>>> 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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>>
>
> _______________________________________________
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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
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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 -- [email protected]
To unsubscribe, go to
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To unsubscribe, go to
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