[TenTec] Omni VI with MMTTY....

[Terry Burkholder N4TB]

Louis,

Just went through this two weeks ago.  Remove the diode it will work FBV

I have two VI+ rigs and had them both playing FB using FSK in the NAQP RTTY
test

73  Terry N4TB


If youAt 08:32 PM 7/28/2008 -0400, you wrote:
>I am trying to hook up my omni VI to use MMTTY.
>
>Made up an interface like this:
>
>DB9                          |                    Omni VI
>---------------------------------------------------------------------------
>
>
>Pin 3 ----  >|Diode --- ---3.3K resistor ----- Mark/Space center pin
>                                            |
>                                            |
>                                           1.8K 
>   
>                                            |
>Pin 5 --------------------------------------|--- Mark/Space Shield
>
>I measured the output on the Mark/Space center pin when I try and TX on
>MMTTY... I get A Square wave output from 0- ~5.5v at the RCA connector, but
>the OMNI VI does not transmit anything...
>
>Am I missing something??  And yes the radio is in FSK mode...
>
>Do I need a PTT line?
>
>Thanks,
>
>Lou
>KC2RVD
>
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Terry Burkholder N4TB
Karen Whall   W4JA
n4tb at tnni.net

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