[App_rpt-users] GM300

Bryan D. Boyle bdboyle at bdboyle.com
Fri May 10 18:06:04 EDT 2013


lol.

--
Bryan
Sent from my iPhone 5...small
keyboard, big fingers...please
forgive misspellings...



On May 10, 2013, at 17:49, Kirk Just Kirk <wb6egr at gmail.com> wrote:

> Be nice! One remote still has a tall green can in it (Automatic Electric) DIAL 4 for UHF please.......
> 
> 
> On Fri, May 10, 2013 at 11:44 AM, Bryan D. Boyle <bdboyle at bdboyle.com> wrote:
>> or even electromechanical...:)   Strowger switches arestill useful devices, even if outdated...;)
>> 
>> --
>> Bryan
>> Sent from my iPhone 5...small
>> keyboard, big fingers...please
>> forgive misspellings...
>> 
>> 
>> 
>> On May 10, 2013, at 17:31, Jim Duuuude <telesistant at hotmail.com> wrote:
>> 
>>> Just a suggestion in general:
>>> 
>>> We are ham radio operators. By definition, we have, at least, a certain basic knowledge of
>>> electronics (as is required to pass our test).
>>> 
>>> If two devices are somehow electrically incompatible with each other, use your knowledge of
>>> electronics to build a simple circuit to interface them together. Converting from one set of
>>> "levels" to another is REALLY not that difficult.
>>> 
>>> That's why we are what we are, and do what we do.
>>> 
>>> Jim WB6NIL
>>> 
>>> P.S. Or, you can use pin 8  *LIKE EVERY ONE ELSE DOES*!! 
>>> 
>>> 
>>> 
>>> > From: n5zua at earthlink.net
>>> > To: app_rpt-users at ohnosec.org
>>> > Date: Fri, 10 May 2013 16:14:00 -0500
>>> > Subject: Re: [App_rpt-users] GM300
>>> > 
>>> > <http://www.batlabs.com/images/gmacc8.gif>
>>> > 
>>> > Gotcha. Not sure if you mentioned if yours was a 16 channel or not. If an 8 
>>> > channel, the above link lists pin 4 as a spare, and instructs that pin 8 
>>> > should be used for COR active low. Since you mentioned getting voltage out 
>>> > of pin 4, I'm assuming yours is a 16 channel radio. Folks with an 8 channel 
>>> > model would not have the option you are using.
>>> > 
>>> > N5ZUA
>>> > 
>>> > ----- Original Message ----- 
>>> > From: "Bill Hurlock" <bill.hurlock at cpcomms.com>
>>> > To: <app_rpt-users at ohnosec.org>
>>> > Sent: Friday, May 10, 2013 3:54 PM
>>> > Subject: Re: [App_rpt-users] App_rpt-users Digest, Vol 51, Issue 9
>>> > 
>>> > 
>>> > > Here is a clip about PIN 4 in the Accessory plug of a GM300.
>>> > >
>>> > > 4 Programmable Output Only This is a radio output port. It is an open 
>>> > > collector output which saturates to A+ supply when active. It is normally 
>>> > > used to drive an external relay or sense lead. It duplicates the function 
>>> > > of J3-3 of the five pin logic board. When active it can source a maximum 
>>> > > current of 250 mA.
>>> > > The pin has a 10 K ohm resistor pull-down to ground on the logic board. 
>>> > > and uses a PNP transistor to switch it up to 12V. This pin does not work 
>>> > > as an active low pin (i.e. pulling something to ground), only as an active 
>>> > > high (that is dragging something up to +12v). If you want an active high 
>>> > > output to drive a reed relay which has the other side of the coil to 
>>> > > ground, this is your pin (but don't forget to check that the backwards 
>>> > > diode is present on the coil pins).
>>> > >
>>> > > Bill Hurlock
>>> > 
>>> > _______________________________________________
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>> 
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