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[aprssig] Re: APRS Standard Connectors?

scott at opentrac.org scott at opentrac.org
Thu Dec 1 03:06:45 UTC 2005


I've managed to short DB9s on more than one occasion, but briefly enough
that I haven't blown any fuses.

I'd like to be able to offer some common cables, but so far it hasn't really
been worth doing.  To get good quality overmolded cables made for a
reasonable price you've got to buy a lot of them, and pay some hefty setup
charges.  I wouldn't mind doing that for one cable configuration, but
everyone has different ideas on power, radio connections, and so on.

Scott
N1VG

> -----Original Message-----
> From: aprssig-bounces at lists.tapr.org 
> [mailto:aprssig-bounces at lists.tapr.org] On Behalf Of Neil Johnson
> Sent: Wednesday, November 30, 2005 7:00 PM
> To: TAPR APRS Mailing List
> Subject: Re: [aprssig] Re: APRS Standard Connectors?
> 
> Bob,
> 
> It's just easier to short pins because the outer "shell" of the 
> connector is metal and the shape and size of the connector 
> make it easy 
> to brush against the pins with the "shell".
> 
> The PS/2 connectors have a metal "shell" but the pins are 
> seated deeper 
> in the connector so it's more difficult to short them.
> 
> I'll take quite a bit of the blame for the problem my self. I should 
> have powered down everything before reconnecting the GPS, the adapter 
> cable I built to convert from the accessory connector on my 
> radio to the 
> DB-9 is way to short, and I should of put the TT3 in a 
> different kind of 
> enclosure (No complaints about the blue box, but I realize 
> now it wasn't 
> appropriate for my installation).
> 
> I guess I should have said that I don't have a problem with 
> using a DB-9 
> connector as a standard for a data connector, just not for 
> supplying power.
> 
> And John, thanks for the suggestion. I should have thought of that.







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