[time-nuts] Triaxial Connectors

[Arnold Tibus]

For completeliness:
I found the assembly instructions from Trompeter Electronics Inc.
located in Westlake Village CA which I annex as 2 pictures.
The Plug PN is: TEI 14949 PL75-9 and the Jack PN is: TEI14949 BJ77
HP did apply for their RF-cable another PN from a company with an 
S as symbol inside a kind of triangle with the PN 1250-1413.
Though the connector is fully coaxial designed, I cannot imagine an application 
beyond VHF because the impedance jump when connecting shielded or 
double shielded symmetrical twinax wire to coaxial system, which is 
of course not of relevance in the discussed case.

Arnold, DK2WT

On Sun, 9 Dec 2007 16:35:14 -0500, Mike Feher wrote:

>At one time I was really hot after getting some triaxial connectors, to use
>with an Austron 5 MHz distribution amplifier. Well, as with most of my
>projects, I managed to buy a whole bunch of connectors (found some on ebay
>and a bunch at a hamfest) and, as usual, never did anything with them. So,
>if you still need a triaxial connector I am sure I can help you out. 73 -
>Mike

> 
> 
>Mike B. Feher, N4FS
>89 Arnold Blvd.
>Howell, NJ, 07731
>732-886-5960
> 
> 
>-----Original Message-----
>From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>Behalf Of Arnold Tibus
>Sent: Sunday, December 09, 2007 4:16 PM
>To: Discussion of precise time and frequency measurement
>Subject: Re: [time-nuts] Super stable BVA Quartz resonators... BVA??

>On Sun, 09 Dec 2007 15:21:46 +0100, Bernd T-Online wrote:


>>BTW: I proudly own a HP2801A plus two crystal sensor elements. However I 
>>cannot connect them to the instrument, because the 2801A has a special 
>>connector for it. It looks like a smaller version of a BNC connector, 
>>but the bayonet has three "nipples" instead of two. Does anyone on the 
>>list know what kind of connector that is and where to get the 
>>counterpart (plug)?

>>Regards

>>Bernd
>>DK1AG

>Bernd and the group, 
>the system voltmeter hp 3437A does have this mentioned connector 
>as I see on my old work horse, sure you mean the same.
>This connector is for double shielded separate isolated or twinax sym.
>cable as used for very low voltage signals (thus avoiding unwanted gnd
>loops).
>The inner coaxial connector is in fact of lower diameter, but
>the outside shell has the same size as the std. BNC, but instead having 
>3 guide pins/slots.
>Trompeter is one manufacturer, unfortunately I have to dig to find my
>spare connector in the bag with the manuf. type no on.
>HP does have a cable for RF-equipment Model 11172B with male on 
>both sides.
>I add some pictures showing plug and connector.
>I hope it can help clarifying a bit.

>Kind regards,

>Arnold, DK2WT









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