RECALL Skip
----- Original Message -----
From: "Pfizenmayer" <pfizenmayer@worldnet.att.net>
To: "Skip K3CC" <k3cc@verizon.net>
Sent: Saturday, March 17, 2007 12:40 PM
Subject: Re: [Orion] no PTT
> Skip - Check pin 3 of the mic connector - that is the PTT line and should
> have 5 volts (more or less) on it. Shorting it to ground should key the
> PTT.The PTT source voltage is thru a 10 K resistor from the 5 volt line.
>
> If you dont have the 5 volts there on the mic connector. see if the PTT
> line (pin 3 on the AUX I/O) jack or the black RCA jack on the dongle is
> active with 5 volts. It should also key the tx.
>
> Now if the 5 volts is not there or is low and variable - you may have a
> cracked chip resistor 100 ohms which is in series with the MIC PTT pin 3
> (I had that happen to my original Orion- its a royal pain to get to -its
> on the back of the cpu/dsp board betwen the display board and the back of
> the cpu/dsp board . Basically you have to do the same steps as the ver 2
> sweep mod to get to that resistor.
>
> But you should have 5 v at the ptt on the back aux/i/o - very unlikely
> both 100 ohm resistors would be cracked. If not something else is amiss.
>
> I forget if there are any special menu items to make front panel mic PTT
> active - dont have an OI manual anymore.
>
> 73 de Hank K7HP
>
>
> ----- Original Message -----
> From: "Skip K3CC" <k3cc@verizon.net>
> To: <Orion@contesting.com>
> Sent: Saturday, March 17, 2007 7:08 AM
> Subject: [Orion] no PTT
>
>
>>I lost the PTT
>> I use a Heil adapter with a foot switch and headset. Both adapter and
>> foot switch are working fine VOX works ok This seems dumb it should be
>> just a switch open or closed what stupid setup did TenTec use ???
>>
>> Any ideas
>>
>> Skip K3CC
>>
>> _______________________________________________
>> Orion mailing list
>> Orion@contesting.com
>> http://lists.contesting.com/mailman/listinfo/orion
>>
>
>
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