[Orion] Fw: no PTT

[Skip K3CC]

RECALL    Skip
----- Original Message ----- 
From: "Pfizenmayer" <pfizenmayer at worldnet.att.net>
To: "Skip K3CC" <k3cc at 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 at verizon.net>
> To: <Orion at 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
>>
>> _______________________________________________
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>> Orion at contesting.com
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>>
>
>