[Test-Equipment] HP-606A Calibration question

[Steve Byan]

On May 26, 2009, at 11:56 AM, Barry wrote:

>> I don't know a source for the specific BNC connector
>> although there are sources for old -hp- parts. I think you
>> could probably straighten the shell well enough using a pair
>> of round nose pliers of the right size to push them out from
>> the inside. I've had success with this a few times.

> I can probably straighten the BNC connector as it is easily removed  
> from the front panel.  I don't have any round nose
> pliers but I think I can insert a steel rod and form it against a  
> softer surface.



The boatanchors list recently had a discussion about straightening BNC  
connectors by inserting a 5/32 inch 12-point socket (from a socket  
wrench) into the connector; the inside of the 12-point socket clears  
the BNC center socket, and the outside of the socket acts as a die to  
reform the cylindrical outer shell of the BNC connector:

> Hi all, just a note to tell you that K7DFW's socket wrench trick was
> perfect. I think it was 5/32 or somesuch, I forget. But I pressed it  
> into
> the bnc using my vice very slowly and carefully. Quite miraculously  
> a plug
> will now fit it snugly but just fine. Thanks a ton for the great hint.
>
> Also a big thanks to Mike, KC4TOS who instructed me on the finer  
> points of
> cabinet reshaping. That came out FB as well. Thanks all!
>
> 73 Eugene W2HX
>
>
> -----Original Message-----
> From: ROLYNN PRECHTL K7DFW [mailto:k7dfw at clatskanie.com]
> Sent: Sunday, May 03, 2009 4:12 PM
> To: Eugene Hertz; boatanchors at mailman.qth.net; milsurplus at mailman.qth.net
> Subject: Re: [Milsurplus] BNC pane lmount sought
>
>
>> The N connector survived, but the BNC was crushed. I tried to round  
>> it out
> but with no luck.
> http://www.w2hx.com/urc-35a/rt-618A/DSCF0071.jpg
> ======================================
>
> Have repaired many BNC's with similar damage by selecting a 1/4" 12  
> point
> socket, with the proper outside diameter, and tapping it inside the
> connector while the connector is still mounted. Rounds it out if the  
> socket
> is inserted with the 1/4" drive end to the outside facing you.  
> Insulator and
> pin are untouched. I feel that a 6 point socket doesn't have the  
> interior
> clearance to completely clear the insulator and may damage it.
>
> K7DFW



--
Steve Byan
stevebyan at comcast.net