[hpsdr] ungrounded connector shells on ozy

[g4fre at g4fre.com]

Talking of the connectors on ozy 

I noted last weekend that neither of the shells on the connectors (db9 and 
db25) on ozy are grounded. There are ground holes on the PCB but they are 
not connected to the shells. I had some rfi issues,  which after deploying 
M3 nuts and bolts in the holes fixed 


Penny has the same hole arrangement but has a different type of db25 
connector which has solder lugs which are soldered to the board, thereby 
earthing the shield 

Dave 

ww2r 

George Medakovich writes: 

> ***** High Performance Software Defined Radio Discussion List ***** 
> 
> I finally freed my usb cable from Ozy. 
> 
> After looking at a couple of connectors I concluded that it wasn't likely
> to be caused by bent contacts.  So I made a shim out of a piece of plastic 
> from
> a piece of packaging and pushed it into each side, past the dimples.
> This did the trick, I was able to harmlessly pull the cable out without 
> damaging
> the connectors. 
> 
> George 
> 
> -------- Original Message --------
> Subject: 	Re: [hpsdr] Sticky USB connector
> Date: 	Fri, 29 Feb 2008 18:59:38 -0500
> From: 	Jerry Flanders <jeflanders at comcast.net>
> To: 	George Medakovich <George at Medakovich.com>, 'High Performance Software 
> Defined Radio Discussion List' <hpsdr at hpsdr.org>
> References: 	<47C86A33.4010202 at Medakovich.com> 
> 
>  
> 
> Strange! Mine is stuck also. I noticed this a couple weeks ago when I 
> wanted to unplug it and was unable to, and I just confirmed it - it won't 
> come off with "finger force". Whazzup with that? 
> 
> Jerry W4UK 
> 
> At 03:25 PM 2/29/2008, George Medakovich wrote:
>> ***** High Performance Software Defined Radio Discussion List ***** 
>> 
>> The USB connector on my Ozy board has a death grip on the USB cable.
>> It refuses to move either in or out.
>> Everything is functional, worst case I could just leave it connected, I
>> guess.
>> Can anyone suggest a safe way to release it? 
>> 
>> George, ae5ci
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>  
> 
>  
> 
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