[Test-Equipment] Who makes this SMA Thumb Wheel?

Nigel Clarke via Test-Equipment test-equipment at mailman.qth.net
Wed Jan 7 06:34:25 EST 2015


Hi Brooke,
 
Very good point about the rotating inner, I hadn't considered that,  
although it would also apply to quite a lot of SMA terminations.
 
Another option I've come across that I wasn't previously aware of is the  
HT-2-SMA long reach spanner from Mini-Circuits, a search will find it.
 
Regards
 
Nigel
GM8PZR
 
 
In a message dated 07/01/2015 01:08:03 GMT Standard Time,  
brooke at pacific.net writes:

Hi  Nigel:

Something like that except with the thumb wheel away from the  SMAm end 
would work.
An adapter from SMAm to something else.  But SMA  connectors have a very 
small design life measured in matings.
When I was  working with satellite microwave hardware we used SMAm-SMAf 
adapters called  "connector savers" and had a log 
book of every mating of both the device  being tested and the connector 
saver.
So an adapter with a solid body, like  the one on the eBay, would tend to 
wear out the SMA connector in the DAGR GPS  
receiver.
It's far better the way the cable now works were the cable  remains 
stationary and the SMA nut is tightened without 
rotating the  center contact.

Mail_Attachment --
Have Fun,

Brooke Clarke,  N6GCE
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
http://www.prc68.com/I/DietNutrition.html
Nigel  Clarke via Test-Equipment wrote:
> Hi Brooke,
>    
> I can't help re the thumb wheel but, depending on the diameter and  depth 
of
>   the access hole, would something like this be  usable?......
>   
>  
http://www.ebay.com/itm/2-Gold-SMA-male-plug-to-BNC-female-jack-Radio-Adapte
>  r-/160517642223
>   
> I've got some that are very  similar and the bonus is that body, including
> the SMA collar, is  solid.
> They wouldn't be my first choice over a "normal" SMA for  most  purposes 
but
> they can be quite useful at times.
>  It's possible that you might find something similar with an SMA female
>  outlet rather than BNC but I don't recall having seen  those.
>   
> Regards
>   
>  Nigel
> GM8PZR
>   
>   
> In a  message dated 06/01/2015 16:28:30 GMT Standard Time,
>  brooke at pacific.net writes:
>
> Hi:
>
> The DAGR GPS  receiver has the SMA antenna jack (J3) in a  hole and so 
needs
> a  special SMA thumb wheel that reaches into
> the  hole.
> I'm  trying to find out who makes that plastic SMA thumb wheel. An   
example
> is on the DAGR to RA-1 antenna  cable:
>
>  http://www.prc68.com/I/Images/DAGR-to-RA-1-Cable3b.jpg
>
>  http://www.prc68.com/I/DAGR.shtml#DAGR_RA-1
>  <http://www.prc68.com/I/Images/DAGR-to-RA-1-Cable3b.jpg>
>  SMA  DAGR Spinner
> p/n: 13499-988-9389-001, NSN:  5935-01-534-6963
> The NSN goes  to Rockwell Collins, but I doubt  they actually make it.
>
> Mail_Attachment  --
> Have  Fun,
>
> Brooke  Clarke
> http://www.PRC68.com
>  http://www.end2partygovernment.com/2012Issues.html
>  http://www.prc68.com/I/DietNutrition.html
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