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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I rigged a solenoid connected to a knife switch and all is well. Just that banging noise when someone keys up on the channel.<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#17365D">Bill Hurlock<o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Jim Duuuude [mailto:telesistant@hotmail.com]
<br>
<b>Sent:</b> Friday, May 10, 2013 5:32 PM<br>
<b>To:</b> Steve Agee; app_rpt mailing list<br>
<b>Subject:</b> Re: [App_rpt-users] GM300<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Calibri","sans-serif"">Just a suggestion in general:<br>
<br>
We are ham radio operators. By definition, we have, at least, a certain basic knowledge of<br>
electronics (as is required to pass our test).<br>
<br>
If two devices are somehow electrically incompatible with each other, use your knowledge of<br>
electronics to build a simple circuit to interface them together. Converting from one set of<br>
"levels" to another is REALLY not that difficult.<br>
<br>
That's why we are what we are, and do what we do.<br>
<br>
Jim WB6NIL<br>
<br>
P.S. Or, you can use pin 8 *LIKE EVERY ONE ELSE DOES*!! <br>
<br>
<br>
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">> From: <a href="mailto:n5zua@earthlink.net">
n5zua@earthlink.net</a><br>
> To: <a href="mailto:app_rpt-users@ohnosec.org">app_rpt-users@ohnosec.org</a><br>
> Date: Fri, 10 May 2013 16:14:00 -0500<br>
> Subject: Re: [App_rpt-users] GM300<br>
> <br>
> <<a href="http://www.batlabs.com/images/gmacc8.gif">http://www.batlabs.com/images/gmacc8.gif</a>><br>
> <br>
> Gotcha. Not sure if you mentioned if yours was a 16 channel or not. If an 8 <br>
> channel, the above link lists pin 4 as a spare, and instructs that pin 8 <br>
> should be used for COR active low. Since you mentioned getting voltage out <br>
> of pin 4, I'm assuming yours is a 16 channel radio. Folks with an 8 channel <br>
> model would not have the option you are using.<br>
> <br>
> N5ZUA<br>
> <br>
> ----- Original Message ----- <br>
> From: "Bill Hurlock" <<a href="mailto:bill.hurlock@cpcomms.com">bill.hurlock@cpcomms.com</a>><br>
> To: <<a href="mailto:app_rpt-users@ohnosec.org">app_rpt-users@ohnosec.org</a>><br>
> Sent: Friday, May 10, 2013 3:54 PM<br>
> Subject: Re: [App_rpt-users] App_rpt-users Digest, Vol 51, Issue 9<br>
> <br>
> <br>
> > Here is a clip about PIN 4 in the Accessory plug of a GM300.<br>
> ><br>
> > 4 Programmable Output Only This is a radio output port. It is an open <br>
> > collector output which saturates to A+ supply when active. It is normally <br>
> > used to drive an external relay or sense lead. It duplicates the function <br>
> > of J3-3 of the five pin logic board. When active it can source a maximum <br>
> > current of 250 mA.<br>
> > The pin has a 10 K ohm resistor pull-down to ground on the logic board. <br>
> > and uses a PNP transistor to switch it up to 12V. This pin does not work <br>
> > as an active low pin (i.e. pulling something to ground), only as an active <br>
> > high (that is dragging something up to +12v). If you want an active high <br>
> > output to drive a reed relay which has the other side of the coil to <br>
> > ground, this is your pin (but don't forget to check that the backwards <br>
> > diode is present on the coil pins).<br>
> ><br>
> > Bill Hurlock<br>
> <br>
> _______________________________________________<br>
> App_rpt-users mailing list<br>
> <a href="mailto:App_rpt-users@ohnosec.org">App_rpt-users@ohnosec.org</a><br>
> <a href="http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users">http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users</a><o:p></o:p></span></p>
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