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 Subject :WRT54 power connector size.. 2014-03-20- 15:56:01 
AE5K
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Joined: 2014-02-26- 15:38:54
Posts: 5
Location: 
 

Can anyone verify the WRT54 barrel type 12vdc power connector size? On first try, I used a 2.5 mm by 5.5 mm and it made only intermittent contact.  From what I've been able to glean from ads for the power cube (aka wall wart) replacements, it should be 2.0 mm by 5.0 mm.  At least for the GL ver. 1.0 - 1.1.  I've also have seen reference to a different size for later versions of the WRT54G.  Is 2.0 x 5.0 mm the correct size I should use for my GL?

73, Don AE5K
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 Subject :Re:WRT54 power connector size.. 2014-04-03- 06:29:55 
KD8USI
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Joined: 2013-08-08- 23:57:50
Posts: 13
Location: 

it is a type n connector 

http://en.wikipedia.org/wiki/Coaxial_power_connector 

http://www.radioshack.com/product/index.jsp?productId=3807940
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 Subject :Re:WRT54 power connector size.. 2014-04-06- 22:00:50 
ae5ae
Member
Joined: 2010-10-27- 00:47:17
Posts: 144
Location: Van Alstyne, TX

WRT54G v1.0 (5-volt supply) used a barrel connector OD=5.5mm ID=2.5mm.

Newer models from v1.1 up (12-volt supply) used the same except ID=2.1mm

This made it difficult to put 12v into a 5v box.

The length of the conductor plus ring was about 10mm so anything longer (within reason) should be OK.
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Last Edited On: 2014-04-06- 22:02:00 By ae5ae for the Reason
 Subject :Re:WRT54 power connector size.. 2014-04-07- 02:32:37 
AE5K
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Joined: 2014-02-26- 15:38:54
Posts: 5
Location: 
 
Thanks ae5ae for the information -- it jives with what I had concluded. I had a friend who was buying the wall warts just to chop off the lead and use the connector + lead for connection to 12v battery for portable operations -- now at least we can order the correct connectors more cheaply! It also explains why I cannot use my Flex 1500 power connector. 73, Don AE5K
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 Subject :WRT54 power connector size.. 2014-04-07- 04:04:22 
wx5u
Member
Joined: 2013-01-02- 00:30:45
Posts: 188
Location: Austin, TX

Because of the geometry of the jack on the back of the 54G, the plug with the 2.5 mm hole seems to work with either the 2.1 or 2.5 jack.  I believe AE5AE is correct on the sizes, which would be "size M,"  but "size N" seems to work, too.

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I'm not part of the development team, so take what I say with a grain of salt. I'm also easily confused.

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 Subject :Re:WRT54 power connector size.. 2014-04-11- 07:30:42 
ae5ae
Member
Joined: 2010-10-27- 00:47:17
Posts: 144
Location: Van Alstyne, TX
Size N (ID=2.5mm) will indeed work but can be a little loose especially if the "finger" (inside the socket that contacts the plug's barrel) gets too loose from wear, you can intermittently lose your ground when things get wiggled. It's best to get the right size. That 0.4mm can make a difference! :) -Rusty-
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