Just turn off the Windows sounds in the software. Problem solved.
Bob
----- Original Message -----
From: "CSM(r) Gary Huber" <glhuber@msn.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Cc: "DXLab Group" <dxlab@yahoogroups.com>
Sent: Wednesday, February 11, 2009 1:03 PM
Subject: Re: [TenTec] O2 output level with PSK aux in
> One thing to consider when using VOX control of the radio in any AFSK mode
> with computer sound card (direct or through an interface) is that if the
> computer is used for any multi-media with sound, the radio will retransmit
> it. For that reason I use PTT with a serial port to avoid accidently
> transmitting when using my Vista machine with DXLab and Winwarbler.
>
> Best regards,
>
> CSM(r) Gary Huber - AB9M
> 9679 Heron Bay Rd
> Bloomington, IL 61705
> (309-662-0604)
> www.csm-gh.com
> glhuber@msn.com
> gary.huber@us.army.mil
>
>
> --------------------------------------------------
> From: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
> Sent: Wednesday, February 11, 2009 7:55 AM
> To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
> Subject: Re: [TenTec] O2 output level with PSK aux in
>
>> My take and experience on digital modes looks at the folks using
>> interface
>> boxes and those that do not use interface boxes. I am one that does not
>> use
>> a interface box but connect the sound card input and output direct to the
>> radio line input and line output. No interface is used. Any of the
>> current
>> and popular software packages on the computer work the digital modes just
>> fine and with no problems. As to RX/TX switching, the VOX handles the
>> task
>> nicely. The Windows sound mixer along with the Line gain on the radio
>> handles the level control. The best thing is that I have none of the
>> interface problems that others seem to deal with. My philosophy is this;
>> more boxes, more wires, more cables = more problems.
>>
>> As to power indication, the display in the radio is very fast thus can
>> indicate the quasi true PEP power value. Mechanical meters are slow by
>> nature and without some electronic acceleration will not be able to
>> follow
>> or display PEP signal values.
>>
>> I am not aware of ANY 100 watt radio on the market today that will output
>> 100 watts of clean PSK signal. Typically the output power should be -3
>> to -6 dB below rated PEP output for digital modes.
>>
>> 73
>> Bob, K4TAX
>>
>>
>> ----- Original Message -----
>> From: "Jim M." <jmiller1706@cfl.rr.com>
>> To: <geraldj@storm.weather.net>; "'Discussion of Ten-Tec Equipment'"
>> <tentec@contesting.com>
>> Sent: Wednesday, February 11, 2009 12:29 AM
>> Subject: Re: [TenTec] O2 output level with PSK aux in
>>
>>
>>> You are right, when I set the drive audio until the ALC just stops
>>> flashing
>>> on the O2 then I get about 30-40 watts out, or in that range, which is
>>> what
>>> has been recommended by others. That's where I leave it for PSK (maybe
>>> PSK
>>> was a bad example to use).... So what about RTTY (AFSK)?. I would like
>>> to
>>> get 90-100W out on that mode, since it is not as sensitive to intermod I
>>> would imagine. But again, the drive from the Navigator won't drive it
>>> fully
>>> to 100W on RTTY. The external wattmeter is a Nye Viking dual meter peak
>>> and
>>> average reading type RFM-003. They don't make it now but it is
>>> accurate:
>>> http://www.eham.net/reviews/detail/2466 SWR is 1.03/1.
>>>
>>> I still would like to hear others' experience with the Navigator (or
>>> other
>>> USB interfaces) driving the O2 Aux input, RTTY AFSK as an example. Are
>>> you
>>> getting sufficient audio drive? Thanks to all for the comments. Jim
>>> N4BE
>>>
>>> -----Original Message-----
>>> From: tentec-bounces@contesting.com
>>> [mailto:tentec-bounces@contesting.com]
>>> On Behalf Of Dr. Gerald N. Johnson
>>> Sent: Tuesday, February 10, 2009 11:57 PM
>>> To: tentec@contesting.com
>>> Subject: Re: [TenTec] O2 output level with PSK aux in
>>>
>>> On Wed, 2009-02-11 at 02:54 +0000, Jim M. wrote:
>>>> Using HRD sound card into rear panel auxiliary input. With speech proc
>>> off I get only about 50 watts out with max audio drive measured on rf
>>> wattmeter. The O2 meter shows 100 watts, not 50. If I turn SP on, I
>>> can
>>> get closer to 100 watts out. The O2 power meter appears to be reading
>>> 2x
>>> what is actually being transmitted? And or the drive level without the
>>> SP
>>> is cut 50 percent? What's going on in the DSP? Any suggestions on how
>>> to
>>> get an honest 100 watts on Psk? Jim N4BE
>>>>
>>>> Jim
>>>
>>> You get 100 watts PSK by running 20 watts from the Orion into a 600 watt
>>> amplifier. Otherwise the intermod just kills the BAND you are on, and
>>> the other users will be wanting to shove nails into your coax. You don't
>>> NEED 100 watts to work the world and no radio puts out clean PSK31 at
>>> full rated power. Most do fine at 30 watts or less, and that's enough to
>>> work the world.
>>>
>>> Since PSK allows many RF signals in a typical receiver IF bandwidth, its
>>> super annoying to have one super strong signal (which 100 clean watts
>>> would be) to take over the AGC and blank the other signals. So high
>>> power (and 100 watts on PSK31 IS HIGH POWER) is unwelcome and not
>>> needed.
>>>
>>> Receiving software nearly always shows an intermod level as well as
>>> showing extra spectrum components on the waterfall display. It is
>>> instantly clear who is running the transmitter too hard. Settle for 25
>>> watts and you will make more contacts and friends.
>>>
>>> 73, Jerry, K0CQ
>>>
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>>
>>
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