Re: A homemade diode power sensor for HP meters
Chased down reference #2 in the HP 1975-10 file
P. A. Szente, S. Adam, and R.B. Riley, "Low-Barrier..."
It's cited many places including this large publication:
An Introduction to Microwave Measurements
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Re: A homemade diode power sensor for HP meters
Reading this thread reminded me of my 431 & 432. Anyone know
where I can find a copy of the 8402A power meter calibrator
manual? Not at the usual suspects.
John??? KK6IL
On 4/10/2025 10:10 AM, David Feldman
via groups.io wrote:
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I went back to the start of the thread to capture local copies of the various cited references. Most of the links are dead, however, internet archive wayback machine got me to almost all of them, so I have the files cached here now (mostly commercial reference material from HP and Boonton, along with Tobias' hand drawn schematics (I don't believe Tobias published schematics after his first few drafts, and don't know if he maintains a repository anywhere.)
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Re: A homemade diode power sensor for HP meters
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Re: Looking for the manual for the HP H04-3460B or 3460B opt H04
As requested I've scanned the "Modifications specification for the H04-3460A Digital Voltmeter", this is used with the standard 3460A manual part number 03460-90001 (not scanned as it's already available from ArtekManuals), I've cleaned the pages a bit and added a pdf here;
?
Hope this helps.
?
David
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Re: A homemade diode power sensor for HP meters
Hi Sergey, Many institutions have recently decided that they need to know the location of their customers. For those that are ignorant about internet fraud, using Microsoft and Apple products, out-of-the-box, suffices, as they will all blab everything they know about you to anyone that asks during a web connection. Those with moderate knowledge of such things often use a variety of nonsense blockers that abort such requests for location as a matter of course... or spoof them, giving a random location. Those that use VNC, are skipped around the world until they are virtually at another location, so any information their browsers give is someone elses. Brave is particularly bad in this regard, as it dutifully blocks or spoofs just about everything asked that might identify you and your location... So, unless you give a little, most of commerce will ignore you, and you will be as lonely as the lighthouse keeper on the edge of the universe... I find I have to allow brave to give my location, for certain transactions, or they fail to work for me. -Chuck Harris On Wed, 9 Apr 2025 14:45:20 -0700 (PDT) "Sergey Kubushyn" <ksi@...> wrote: On Wed, 9 Apr 2025, Sergey Kubushyn wrote:
BTW, it also depends on where you are as everything is going via some
proxy (CDN) like Akamai/Imperva/Cloudfare/whatever these days and
those are falling apart.
There was couple of weeks when I was not even able to login into my
Cox Business account to pay my bill -- it's been telling me I'm
trying to login from abroad (they used/use Imperva and that routed me
via Israel) and they don't allow that.
On Wed, 9 Apr 2025, Lynn C via groups.io wrote:
You were lucky to catch that very rare moment it worked. I don't
need those connectors much -- have a bunch of dead sensors that I
can use to build my own calibrator and those already have the
entire driving circuitry in them so I don't have to build it from
scratch. Just tried to get some to have them in stock, just in
case. I actually don't see any other use for them except building a
calibrator so not a big loss...
I just purchased 12 pcs without difficulty using a credit card for
payment.
Lynn C. KA7FPH
On Wed, Apr 9, 2025 at 3:03?PM Sergey Kubushyn via groups.io
<ksi= [email protected]> wrote:
On Wed, 9 Apr 2025, David Feldman via groups.io wrote:
They were $4.12 when I added 10 to my cart. Then, when tried to
checkout they suddenly became $9.15 and "We can't process Credit
Crd payments at this
time. Please try again later".
Newark became a buggy horror, I was not been able to purchase
ANYTHING from
them for last 2 years or so -- there was ALWAYS an issue and
their site never worked since something like couple of years ago.
Do NOT buy anything from them, don't support the incompetence.
This is about the Amphenol Tuchel female connector discussed in
this thread's history (used by HP for panel and device mounting the
8480 series
power sensors and 43x series power meters.)
This posting (9 April 2025) probably has limited utility and
will at
some point become moot, but wanted pass this along in case
anyone was interested in homebrewing HP power sensor or power
meter, as the ebay listing (offering the same connector) cited
previously in the thread disappeared some time ago.
I located stock (in US distributor Newark) a version of the
female panel
connector cited in the discussion thread. They appear to be a
"close out" (from time to time, Newark reprices an item in what
appears to be an end-of-stock circumstance (the notation includes
"available in quantity shown".)
This connector is female, panel mount, with solder cup pins (12
pins.)
There are other variants of the same connector type (solder
pins, etc.)
The part appears to show stock of 82 pieces (in US) at price of
USD 4.12
today 9 April 2025.
Amphenol-Sine has online a data catalog which includes
mechanical
drawings for this specific connector:
See page 22 for PCB layout applicable to the 12 pin thru-hole
version
(PNG captured from that page is attached).
I rotated the (above) drawing of the 12 pin connector by 37.5
degrees
counter-clockwise - using powerpoint - to bring the key down to
the bottom
of the connector, matching how it is used in the HP devices -
and scaled it
(pins E and K are separated by 9.0 mm) so that I could use the
circles representing the 12 pins as a position guide for
corresponding holes in a PC board layout (idea is a small PCB
that adapts the connector's rear pins
to a 2x4 2.54mm header for mating to a prototyping board.)
Somewhat brute-force but this was a last-minute add to a PCB
layout that was headed
out for fab.
I ordered and received a couple of these connectors and they
appear to
mate with the typical HP sensor cable without difficulty. The
panel mounting nut (ring) - included - would require a 2-pin hand
tool to tighten.
I have a similar question as most-recent posting to this thread
asked -
about whether this project got built and what the experience
was!
Dave
---
*
* KSI@home KOI8 Net < > The impossible we do immediately. *
* Las Vegas NV, USA < > Miracles require 24-hour notice. *
*
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Re: A homemade diode power sensor for HP meters
The files are in a folder called
A homemade diode power sensor for HP meters 92636
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Re: A homemade diode power sensor for HP meters
Files (8) are uploaded. They used the names given by the original link.
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Added Folder /All HP, Agilent and Keysight instruments in folders by part numbers/8000 to 8999/8481A, 8482A and 8483A Power Sensors/A homemade diode power sensor for HP meters 92636
#file-notice
David Feldman <wb0gaz@...> added folder /All HP, Agilent and Keysight instruments in folders by part numbers/8000 to 8999/8481A, 8482A and 8483A Power Sensors/A homemade diode power sensor for HP meters 92636
Description:
Files referenced in thread that started Feb 1 2019. Retrieved using Internet Archive Wayback machine.
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Re: The care of RF connectors
Aside from HP and Mini Circuits there are numerous other documents available from other sources talking about his subject.
I used to attend seminars at NBS (now NIST) when living in Boulder, Colorado Some of them touched on connector characteristics and care. I was surprised to learn about the limited number of mate/unmate cycles on some connectors before they degraded the signals passing through them.
Greg
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Re: A homemade diode power sensor for HP meters
How about this location:
David, thanks for collecting these files.? I was not able to collect the files from the now-broken references so I appreciate your efforts.
Lynn C.
Solder-tail version of the same connector, also from Newark, also at unusual unit price.
Roy - if this is contrary to group guidelines, please accept my apology (I presumed that this would be of interest due to the very specialized nature of the parts and the prior reference to an ebay seller being defunct.)
Below is a listing of the file names I retrieved using internet archive during my brief review of the thread this morning (anyone could do this, but of course it will be convenient to have them cached online).
I've not uploaded them anywhere at this point - they can be retrieved using internet archive to search on each of the (defunct) URLs that were in the postings from earlier times.
If someone can tell me where these files should be uploaded, I'll be happy to do that.
(DOS command of the directory where I put the files retrieved)
Directory of D:\848x homebrew power sensor
04/10/2025? 05:22 PM? ? <DIR>? ? ? ? ? .
04/10/2025? 05:22 PM? ? <DIR>? ? ? ? ? ..
04/10/2025? 10:54 AM? ? ? ? ?2,658,520? ? ? ? ? ? ? ? ?08484-90019-PowerSensor.pdf
04/10/2025? 11:01 AM? ? ? ? ?5,261,326? ? ? ? ? ? ? ? 1975-10.pdf
04/10/2025? 10:51 AM? ? ? ? ?4,021,004? ? ? ? ? ? ? ? 20181117_170657.jpg
04/10/2025? 10:50 AM? ? ? ? ?3,350,675? ? ? ? ? ? ? ? 20181117_173101.jpg
04/10/2025? 10:52 AM? ? ? ? ? ?234,284? ? ? ? ? ? ? ? ?8481schem.png
04/10/2025? 10:55 AM? ? ? ? 11,393,180? ? ? ? ? ? ? ?8484a.pdf
04/10/2025? 10:56 AM? ? ? ? ? ?211,615? ? ? ? ? ? ? ? HP 11683A H01 ops_service.pdf
04/10/2025? 11:03 AM? ? ? ? ?6,653,962? ? ? ? ? ? ? ?WTG_RefGuide_F1128_sm_web.pdf
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Re: A homemade diode power sensor for HP meters
Solder-tail version of the same connector, also from Newark, also at unusual unit price.
Roy - if this is contrary to group guidelines, please accept my apology (I presumed that this would be of interest due to the very specialized nature of the parts and the prior reference to an ebay seller being defunct.)
Below is a listing of the file names I retrieved using internet archive during my brief review of the thread this morning (anyone could do this, but of course it will be convenient to have them cached online).
I've not uploaded them anywhere at this point - they can be retrieved using internet archive to search on each of the (defunct) URLs that were in the postings from earlier times.
If someone can tell me where these files should be uploaded, I'll be happy to do that.
(DOS command of the directory where I put the files retrieved)
Directory of D:\848x homebrew power sensor
04/10/2025 05:22 PM <DIR> .
04/10/2025 05:22 PM <DIR> ..
04/10/2025 10:54 AM 2,658,520 08484-90019-PowerSensor.pdf
04/10/2025 11:01 AM 5,261,326 1975-10.pdf
04/10/2025 10:51 AM 4,021,004 20181117_170657.jpg
04/10/2025 10:50 AM 3,350,675 20181117_173101.jpg
04/10/2025 10:52 AM 234,284 8481schem.png
04/10/2025 10:55 AM 11,393,180 8484a.pdf
04/10/2025 10:56 AM 211,615 HP 11683A H01 ops_service.pdf
04/10/2025 11:03 AM 6,653,962 WTG_RefGuide_F1128_sm_web.pdf
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Re: The care of RF connectors
so are you suggesting the freon or the isopropyl?alcohol here?
--Eric
_________________________________________
Eric Garner
HP Application Note AN 326 covers this, as well as several other HP documents.
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Re: A homemade diode power sensor for HP meters
On Wed, Apr 9, 2025 at 01:15 PM, David Feldman wrote:
This is about the Amphenol Tuchel female connector discussed in this thread's history
Thanks for the catalog link, and the wiring diagram.
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Yet... and IMO... II really wish people wouldn't post stuff... like 'bargains' ...on parts for the project under discussion.
It brings about bad behavior:
...like me winging
...like people hording .... why?... because they don't need them... but someone else might?
...like suppliers increasing prices
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If one surmises I need a reminder that people can do what they want.
Please save the forum space... I see people doing it all the time.
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Re: The care of RF connectors
HP Application Note AN 326 covers this, as well as several other HP documents.
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Re: A homemade diode power sensor for HP meters
Thanks for creating the file archive.? Where can I access the file archive created on this topic?
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Re: A homemade diode power sensor for HP meters
I went back to the start of the thread to capture local copies of the various cited references. Most of the links are dead, however, internet archive wayback machine got me to almost all of them, so I have the files cached here now (mostly commercial reference material from HP and Boonton, along with Tobias' hand drawn schematics (I don't believe Tobias published schematics after his first few drafts, and don't know if he maintains a repository anywhere.)
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Re: A homemade diode power sensor for HP meters
Matt - I just saw the same thing (the page updated a few seconds after initially rendering). Their web site has extraordinary and severe design problems (extreme case of "low bid HTML".)
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Re: A homemade diode power sensor for HP meters
Last time I ordered from them was in 2018 and they got the sales tax wrong.? At least they refunded the difference without a fight.
So, I placed an order for 4 connectors at $4.12.? It seems to have gone through and they now show 78 available.? I wonder what happened to the other orders!
Orin.
Just clicking on that link to the connector that David Feldman posted makes me never want to do business with that company.? It first shows a unit price of $4.12, then after a second or two the price jumps to $9.15.
And they still show 82 connectors in stock.
?
I frequently have checked Newark for parts, and perhaps even have ordered from them a few times over the years.? After seeing this, I won't be making that mistake again.? Thanks for the warnings!
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The care of RF connectors
I realize that everyone has their own more-or-less “witches brew” for dealing with RF connectors but this is a nice general treatment on them from a reputable source.
https://blog.minicircuits.com/care-handling-of-rf-microwave-connectors/
Greg
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Re: A homemade diode power sensor for HP meters
On Wednesday 09 April 2025 10:08:13 pm Dave McGuire via groups.io wrote: ? ?Yay, suits, let's farm that web development out to India for a dollar
a day, what could go wrong?
On one of the many bookshelves here I have "In Search Of Excellence" sitting right next to "Fired For Success"... :-) -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin
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