[TenTec] Omni VII Digital

[Brian Carling]

Thank you, Lee. No it is a fixed level device with a 1 to 1 transformer.

Best regards - Bry Carling



> On Aug 13, 2014, at 9:35 AM, "Lee  WA3FIY" <wa3fiy at radioadv.com> wrote:
> 
> Brian, is there a chance that the interface device is set for Mic level audio output instead of 
> Line level?   
> 
> -Lee-
> WA3FIY
> 
>> On 13 Aug 2014 at 7:52, bcarling at cfl.rr.com wrote:
>> 
>> It may be "fried" but I seriously doubt it. I was able to work into VK
>> this morning on 40m with JT65 and I am now getting 30 - 50 watts
>> output. 
>> 
>> The fault may be in the amount of signal WINDOWS 8 is allowing to come
>> out of the laptop.
>> 
>> I am trying to find if there is some level that is pulled down but
>> everything I see is at 100%
>> 
>> So far so good. I don't want to get 100 watts out and I think that I
>> probably don't want any ALC action while running digital modes. The
>> speech processor actually helps  alittle in my case.
>> 
>>> On 12 Aug 2014 at 23:12, Bob McGraw - K4TAX wrote:
>>> 
>>> The Omni VII does not have low gain.  But it seems yours has a
>>> defective LINE INPUT.  I can run mine at 25% and raising the level
>>> up on the computer I get 100 watts of data output, well into ALC
>>> range.
>>> 
>>> Sorry Brian, but from what you say, your LINE INPUT circuit is
>>> fried.  This is also evident from your findings that it works OK
>>> with the FT857 but not the Omni VII.  In doing a bit of research on
>>> the FT857D I find the audio levels for the two radios are very close
>>> to the same values.
>>> 
>>> 73
>>> Bob, K4TAX
>>> 
>>> 
>>> 
>>> 
>>> ----- Original Message ----- 
>>> From: <bcarling at cfl.rr.com>
>>> To: "Louis Ciotti" <lciotti1 at gmail.com>; <tentec at contesting.com>
>>> Sent: Tuesday, August 12, 2014 10:49 PM Subject: Re: [TenTec] Omni
>>> VII Digital
>>> 
>>> 
>>>> Nothing is smoked. The Tentec just has VERY low gain on that aux
>>>> input when used in USB mode unfortunately.
>>>> 
>>>> If I run everything flat out, I can make contacts. OMNI VII Line
>>>> Gain 100% Software level at maximum. Laptop gain 100% and OMNI VII
>>>> Power set for 100 watts. If I run the speech processor at 40 - 50
>>>> I can make more power and more contacts.
>>>> 
>>>> It works. It just doesn't work very well compared to an FT857D.
>>>> 
>>>> If I turn the Keying loop back, on I can use my Centurion amp and
>>>> get 30 - 100 watts out depending on the audio frequency. The
>>>> laptop produes a peak around 2 kHz which isn't unusual. With
>>>> everything flat out 100% I can sometimes now get 20-30 watts out
>>>> of the radio that way. Not  great but it will do for now.
>>>> 
>>>>> On 12 Aug 2014 at 23:12, Louis Ciotti wrote:
>>>>> 
>>>>>> On Tue, Aug 12, 2014 at 7:38 PM,  <bcarling at cfl.rr.com> wrote:
>>>>>> I don't think it's the signal levels unless there is a bad
>>>>>> connection insid ethe Easy-DIGI or her connected it to the
>>>>>> wrong pin on the ACC1 cable.
>>>>>> 
>>>>>> There is plenty of audio coming out of the laptop.
>>>>> 
>>>>> Sounds like you are using the speaker output connection,
>>>>> typically this output well above line level voltages (I am
>>>>> guessing here since I have never probed the outputs on a laptop).
>>>>> I am placing my bet on one of two things...  either something is
>>>>> wrong with the interface or you damaged something in the audio
>>>>> input circuitry.  It sounds like you are able to use this
>>>>> interface with another radio.  If so then something is smoked in
>>>>> the Omni audio input.
>>>>> 
>>>>> Sounds like tou have access to an oscilliscope.  Open up the
>>>>> interface a probe the audio on one side of the isolation
>>>>> transformer (the wire maked PC input) and compare that to the
>>>>> output side of the isolation transformer.  Report the
>>>>> peak-to-peak values back.  Then probe pin 1 on the interface
>>>>> connector.  Should match the output side of the isolation
>>>>> transformer.  If possible I would sent it a constant frequency
>>>>> tone.  that way you can get a nice sine wave to see on the
>>>>> oscilliscope.  If all is good there then it is pointing to
>>>>> something in the radio.
>>>>> 
>>>>> Lou
>>>>> K2LRV
>>>> 
>>>> 
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