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[time-freq] TADD Cabinet Question

John Ackermann N8UR jra at febo.com
Wed Aug 23 20:55:47 UTC 2006

Hi Stan --

The power jack is 3/8 inch (9.52mm) and should fit a Switchcraft 760
series coaxial power connector.  See page 309 of the Digikey catalog,
particularly the devices that match figure 9.  The hole probably should
have been punched a tad larger as it's pretty much exactly the size of
the connector bushing, but with some wiggling and/or a tiny bit of
filing, it should fit.  On the next run, we'll see if we can enlarge the
hole to fit the Radio Shack connectors; one problem is that we're trying
to keep as much clearance above the board as we can, so the smaller
connector body is helpful.

The two DB-9 cutouts are intended for the TADD-3, which can provide
RS-232 level PPS outputs.


Stan Salek said the following on 08/22/2006 02:40 PM:
> Hello John N8UR and others,
> I received my TADD-series cabinet in yesterday's mail and have a  couple
> of questions:
> 1.  Is there a recommended coaxial power jack?  The hole size appears 
> to be too small for one of the available Radio shack types and too 
> large for the other.
> 2.  What is the intended purpose of the DB9 connector positions?
> I will be using the cabinet with a TADD-1.
> 73,
> Stan NJ6E
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