[GreenKeys] Jack Selection for TTY equipment

[hwhall at compuserve.com]

 The complexities of selecting suitable parts are why I thought it would be a good idea to communicate the part numbers.

Wayne

 WB4OGM



-----Original Message-----
From: Frank Carraro <kf9nz at sbcglobal.net>
To: greenkeys <greenkeys at mailman.qth.net>
Sent: Mon, Nov 18, 2013 6:01 pm
Subject: Re: [GreenKeys] Jack Selection for TTY equipment

       ???????????  Just becuse a plug will fit in the jack does not mean the jack is suitable for  the purpose you intend.?? Most long frame jacks found in surplus  sources are for telephone or audio uses.? The spring arrangement of  telegraph jacks is entirely different from telephone jacks and the "loop'?  or?"set" functions cannot be wired with telephone jacks, just as? the  normal back-to-back connection of telephone jacks (Line/Drop) cannot be wired  with telegaaph jacks?(generally).? In addition of course,? three  conductor (TRS) jacks are telephone use, but can be used for audio stuff, while  no telegraph jacks are made with three conductors.?
 ?
 Frank?? 
    -----Original Message-----
From:    greenkeys-bounces at mailman.qth.net    [mailto:greenkeys-bounces at mailman.qth.net]On Behalf Of    hwhall at compuserve.com
Sent: Sunday, November 17, 2013 10:53    PM
To: greenkeys at mailman.qth.net
Subject: Re: [GreenKeys]    Jack Selection for TTY equipment


      FWIW, my local surplus store (OEM    Parts) has a tray full of long frame jacks that take 1/4 inch plugs. They were    in my way constantly when I was looking for the smaller 0.206 inch version for    Jeff (WA6FWI). And they are a LOT less than $11 apiece. They also have a lot    of the 303A plugs, NOS in original plastic or some mounted on    cables.
   

   Wayne

   WB4OGM


-----Original Message-----
From: Jeffrey D Angus    <jdangus at att.net>
To: greenkeys    <greenkeys at mailman.qth.net>
Sent: Sat, Nov 16, 2013 3:54    pm
Subject: Re: [GreenKeys] Jack Selection for TTY equipment


   

Pricey, but they'll outlive us all. 
   <http://www.mouser.com/ProductDetail/Switchcraft/MT334BX/?qs=sGAEpiMZZMv0W4pxf2HiV4UhZgoPcadETa5kifJsDRk%3d> 
   The Switchcraft 3 conductor (TRS) bushing mounted (as in 
   patch panels and telco stuff) with two N.C. leafs for the 
   tip and ring respectively. This allows for shorting when a 
   plug is removed. 
    
   And yes, 1/4" plugs fit just fine. Both W.E. Mil and Radio 
   Shack. 
    
   Jeff-1.0 
   wa6fwi 
    
   ______________________________________________________________ 
   GreenKeys mailing list 
   Home: http://mailman.qth.net/mailman/listinfo/greenkeys 
   Help: http://mailman.qth.net/mmfaq.htm 
   Post: mailto:GreenKeys at mailman.qth.net 
    
   2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/ 
   1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html 
   Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html 
    
   This list hosted by: http://www.qsl.net 
   Please help support this email list: http://www.qsl.net/donate.html 
   





    ______________________________________________________________ GreenKeys mailing list Home: http://mailman.qth.net/mailman/listinfo/greenkeys Help: http://mailman.qth.net/mmfaq.htm Post: mailto:GreenKeys at mailman.qth.net  2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/ 1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html  This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html  
  

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20131118/00179e7e/attachment.html>