[time-nuts] HP 106a oscillator connectors question

[cdelect]

Thanks for all the info.

They are the 1/4-32 (S-93 compatible) Microdot !!!

I ordered a double ended cable and will cut it in half to give me the two
connections I need (5Mhz out and EFC in).

Cheers,


Corby

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Re: [time-nuts] HP 106a oscillator connectors question

[Oz-in-DFW]

Several have suggested that these are 10-32 connectors.  If this is
true, a 10-32 nut will thread on them with no trouble.  I believe these
**may** be the 1/4" diameter variant that was 93 ohm characteristic
impedance.  I **think* they are called an S-93.  Still 32 tpi, but 1/4"
in diameter. You can test the thread pitch with a 6,8, or 10-32 bolt.
There was another even more obscure connector that used a coarser pitch. 

And before the 'not 50 ohm' firestorm starts - it doesn't matter.  This
is only 6" or so of cable, the mismatch impact is miniscule at this
frequency.  They were far more concerned with mechanical ruggedness.

On 6/3/2016 4:04 PM, cdel...@juno.com wrote:.



> Need help identifying the RF connectors on the unit.
>
> They are not SMA but look to be the same diameter. would need two
> adaptors or a couple old cables with the matching connector I could
> splice into. I had to poke in a wire and use clip leads!
>
> Cheers,
>
> Corby
>


-- 
mailto:o...@ozindfw.net
Oz
POB 93167 
Southlake, TX 76092 (Near DFW Airport) 



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Re: [time-nuts] HP 106a oscillator connectors question

[Dan Rae]

Corby wrote:


Need help identifying the RF connectors on the unit.
Corby, I may have some connectors on leads but would have to dig deep in 
my garage.  They were used a lot on some UK made Racal receivers in the 
sixties...


Let me know if you still need them.

Dan
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Re: [time-nuts] HP 106a oscillator connectors question

[Charles Steinmetz]

Corby wrote:


Need help identifying the RF connectors on the unit.


Original MALCO connectors:

   

   

Instruction sheet (note that these connectors require an installation tool):



Pasternack makes an adapter to BNC-F (at $56 each):



Fairview also has BNC adapters:



Best regards,

Charles


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Re: [time-nuts] HP 106a oscillator connectors question

[Bill Byrom]

Those appear to be "Microdot 10-32" S-50 connectors to me. See:
https://en.wikipedia.org/wiki/Microdot_connector
http://www.cdint.com/catalog/model/BM-174-6
http://www.mouser.com/pdfdocs/TEConnectivity_Nanonics_MicrodotCatalog.pdf --- 
see page 94
https://www.surplussales.com/Connectors/Micro-2.html
--
Bill Byrom N5BB
 
 
 
On Fri, Jun 3, 2016, at 04:04 PM, cdel...@juno.com wrote:
> Well the checkout of the 106A oscillator section is going well.
>
> I ran it for 6 hours and the outer oven came down OK, will have to
> wait
> until I can do a longer attended run for the inner oven as it
> takes 8 1/2
> hours per the manual to come down!
>
> This unit was not built with the fine adjust via an internal pot
> as shown
> in the manual but does have the external EFC jack show. (EFC jack does
> work)
>
> After the 6 hours Frequency was within a HZ and could be
> adjusted. Quit
> there until I can find a spot for it to live for an extended test.
>
> Need help identifying the RF connectors on the unit.
>
> They are not SMA but look to be the same diameter. would need two
> adaptors or a couple old cables with the matching connector I could
> splice into. I had to poke in a wire and use clip leads!
>
> Cheers,
>
> Corby
>
> _
> time-nuts mailing list -- time-nuts@febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
> Email had 1 attachment:


>  * 106conna.jpg  70k (image/jpeg)
 
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Re: [time-nuts] HP 106a oscillator connectors question

[Bob Darlington]

They look like microdot connectors.  Like what I have on my ultrasound
transducers.
On Jun 3, 2016 3:59 PM,  wrote:

> Well the checkout of the 106A oscillator section is going well.
>
> I ran it for 6 hours and the outer oven came down OK, will have to wait
> until I can do a longer attended run for the inner oven as it takes 8 1/2
> hours per the manual to come down!
>
> This unit was not built with the fine adjust via an internal pot as shown
> in the manual but does have the external EFC jack show. (EFC jack does
> work)
>
> After the 6 hours Frequency was within a HZ and could be adjusted. Quit
> there until I can find a spot for it to live for an extended test.
>
> Need help identifying the RF connectors on the unit.
>
> They are not SMA but look to be the same diameter. would need two
> adaptors or a couple old cables with the matching connector I could
> splice into. I had to poke in a wire and use clip leads!
>
> Cheers,
>
> Corby
> ___
> time-nuts mailing list -- time-nuts@febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>
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Re: [time-nuts] HP 106a oscillator connectors question

[Bruce Griffiths]

Microdot (now available from TE connectivity) made these for 50 ohm, 75 ohm and 
93 ohm coax. Digikey have 50 ohm coax male versions.
Bruce
 

On Saturday, 4 June 2016 3:02 PM, Tom Miller <tmiller11...@verizon.net> 
wrote:
 

 I've seen these used for accelerometer cables.

http://www.ebay.com/itm/Wilcoxon-Meggitt-731-207-Low-Frequency-Seismic-Accelerometer-/301611300986?hash=item46396f387a:g:~vcAAOSwBahVPrby

http://www.ebay.com/itm/COLUMBIA-RESEARCH-CABLE-for-ACCELEROMETER-VIBRATION-10-32-CONNECTOR-BIN-K3-08-/262451526625?hash=item3d1b547be1:g:NtoAAOSwQJhUcVjB




- Original Message - 
From: "Mark Sims" <hol...@hotmail.com>
To: <time-nuts@febo.com>
Sent: Friday, June 03, 2016 6:30 PM
Subject: [time-nuts] HP 106a oscillator connectors question


> There is a connector that looks like an SMA connector, but isn't. 
> Unfortunately I don't remember what they are called.  I have seen them 
> used on microwave equipment (like VNA's).  Some idiots will really try 
> hard to mate them with SMA's,  but just damage the connectors... and you 
> don't want to know what replacements cost, especially when you have to 
> have your VNA re-cal'd because the connector was damaged.
> Hopefully one of our microwave experts will be able to point you in the 
> right direction.
> -
>> They are not SMA but look to be the same diameter.
> ___
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Re: [time-nuts] HP 106a oscillator connectors question

[Tom Miller]

I've seen these used for accelerometer cables.

http://www.ebay.com/itm/Wilcoxon-Meggitt-731-207-Low-Frequency-Seismic-Accelerometer-/301611300986?hash=item46396f387a:g:~vcAAOSwBahVPrby

http://www.ebay.com/itm/COLUMBIA-RESEARCH-CABLE-for-ACCELEROMETER-VIBRATION-10-32-CONNECTOR-BIN-K3-08-/262451526625?hash=item3d1b547be1:g:NtoAAOSwQJhUcVjB




- Original Message - 
From: "Mark Sims" <hol...@hotmail.com>

To: <time-nuts@febo.com>
Sent: Friday, June 03, 2016 6:30 PM
Subject: [time-nuts] HP 106a oscillator connectors question


There is a connector that looks like an SMA connector, but isn't. 
Unfortunately I don't remember what they are called.  I have seen them 
used on microwave equipment (like VNA's).   Some idiots will really try 
hard to mate them with SMA's,  but just damage the connectors... and you 
don't want to know what replacements cost, especially when you have to 
have your VNA re-cal'd because the connector was damaged.
Hopefully one of our microwave experts will be able to point you in the 
right direction.

-

They are not SMA but look to be the same diameter.

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[time-nuts] HP 106a oscillator connectors question

[Mark Sims]

There is a connector that looks like an SMA connector, but isn't.   
Unfortunately I don't remember what they are called.  I have seen them used on 
microwave equipment (like VNA's).   Some idiots will really try hard to mate 
them with SMA's,  but just damage the connectors... and you don't want to know 
what replacements cost, especially when you have to have your VNA re-cal'd 
because the connector was damaged.
Hopefully one of our microwave experts will be able to point you in the right 
direction.
-
> They are not SMA but look to be the same diameter.
>   
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[time-nuts] HP 106a oscillator connectors question

[cdelect]

Well the checkout of the 106A oscillator section is going well.

I ran it for 6 hours and the outer oven came down OK, will have to wait
until I can do a longer attended run for the inner oven as it takes 8 1/2
hours per the manual to come down!

This unit was not built with the fine adjust via an internal pot as shown
in the manual but does have the external EFC jack show. (EFC jack does
work)

After the 6 hours Frequency was within a HZ and could be adjusted. Quit
there until I can find a spot for it to live for an extended test.

Need help identifying the RF connectors on the unit.

They are not SMA but look to be the same diameter. would need two
adaptors or a couple old cables with the matching connector I could
splice into. I had to poke in a wire and use clip leads!

Cheers,

Corby___
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