> The audio is coming through the USB audio input.
Now you're changing the story. In the previous e-mail you
said "RS-232" input - now you say USB.
Since the K3 has *NO* USB input or output, you obviously
have something connected to the Line Out/Line In. In any
case, you've proven how incredibly unreliable you are -
and you still don't bother to sign your e-mail with a
NAME AND CALLSIGN as required by the list policies.
73,
... Joe, W4TV
On 11/19/2010 2:27 PM, The Smiths wrote:
>
> No, that's not the case, but thanks for a good guess none the less. The
> audio is coming through the USB audio input. Not through an open mic on the
> computer, which doesn't exist. Furthermore I don't even need to have the
> volume up on the K3 to see the audio on the scope, and there is NO analog
> connections to the computer. However, I dont see Post audio effects going
> on. In otherwords, I can only see pre-Notch etc settings... Guess it's just
> a voodo rig...
>
> T Smith
> SWL
>
>
>> Date: Fri, 19 Nov 2010 01:41:31 -0500
>> From: li...@subich.com
>> To: notforc...@hotmail.com
>> CC: elecraft@mailman.qth.net
>> Subject: Re: [Elecraft] K3: USB port
>>
>>
>>
>>>> I'm sorry, perhaps I'm mistaken, but I've already hooked up my K3
>>>> using a serial to USB converter cable, and then turned on
>>>> Spectrogram and found that the audio IS already there. Do I have a
>>>> voodoo K3, or is someone else mistaken that this feature already
>>>> exists?
>>
>> No, you probably don't realize that Spectrogram uses the default
>> audio input device and that Windows systems commonly default to the
>> computer's built-in microphone. You are probably getting nothing more
>> than "acoustic coupling" between the K3 speaker and the computer's
>> mic. This assumes that you have not intentionally configured the
>> K3 and computer to use a cable between the K3 Line Out jack and the
>> computer's Line In jack and made that the default.
>>
>> There is no audio connection to the K3 RS-232 port ... read the
>> schematics!
>>
>> 73,
>>
>> ... Joe, W4TV
>>
>>
>> On 11/19/2010 12:32 AM, The Smiths wrote:
>>>
>>> I'm sorry, perhaps I'm mistaken, but I've already hooked up my K3 using a
>>> serial to USB converter cable, and then turned on Spectrogram and found
>>> that the audio IS already there. Do I have a voodoo K3, or is someone else
>>> mistaken that this feature already exists?
>>>
>>> T Smith
>>> SWL
>>>
>>>> Date: Thu, 18 Nov 2010 20:20:33 -0500
>>>> From: li...@subich.com
>>>> To: k2qi....@gmail.com; elecraft@mailman.qth.net
>>>> Subject: Re: [Elecraft] K3: USB port
>>>>
>>>>
>>>> Moving from RS-232 to USB for commands (CAT) is trivial - replace
>>>> the DB9 with one of the FTDI devices that is a USB to RS-232
>>>> converter built into the DB9 socket. However, that does not get
>>>> you audio ...
>>>>
>>>> To do audio, you would need not only the USB converter but a hub
>>>> and USB Audio CODEC (e.g. PCM8902 or similar). Then Elecraft
>>>> would need to build controls for the USB CODEC (ADC/DAC) and do
>>>> all the other software support - further burdening the K3 CPU.
>>>>
>>>> After all that, all you've done is move the USB soundcard, USB
>>>> to serial converter and USB hub into the K3 and added a whole new
>>>> level so support burden - providing operating system specific
>>>> drivers for each version of Windows (along with the cost of
>>>> signing drivers with Microsoft), specific drivers for each version
>>>> of OS-X, and specific drivers for each unique version of LINUX.
>>>> By the way ... depending on the USB Audio chip set (ADC/DAC) and
>>>> USB hub, you might find yourself needing specific drivers for each
>>>> chip (Audio, hub, control) *and* EEPROM to customize, control and
>>>> serialize each of those chip!
>>>>
>>>> After all of that you have not provided any new capability for
>>>> the K3. Other than adding at least $100 per unit in hardware,
>>>> development, and ongoing support costs the only thing this exercise
>>>> will accomplish is to relieve a relatively small number of users
>>>> of the need to purchase a KUSB and allow them to keep their sound-
>>>> card free for iTUNES. For all the rest, you have increased the
>>>> cost of the K3, added an entirely new level of complexity to the
>>>> rig, and perhaps required that the user purchase new hardware to
>>>> use their rig with computer control.
>>>>
>>>> 73,
>>>>
>>>> ... Joe, W4TV
>>>>
>>>> On 11/18/2010 7:31 PM, James Sarte (K2QI) wrote:
>>>>> Hello group,
>>>>>
>>>>> I know Wayne has mentioned several times in the past that they had
>>>>> considered all possibilities when it comes to PC interfaces for the K3,
>>>>> including USB. In fact, he says the following on 16 June, 2009:
>>>>>
>>>>> "The KIO3's digital I/O module could be replaced with one that has USB
>>>>> rather than RS232 -- or better yet, both. We planned for this.
>>>>>
>>>>> The reason we went with RS232 initially is that many hams are still
>>>>> using PCs that have only RS232 ports. Those who prefer to use USB can
>>>>> use an inexpensive USB-to-RS232 adapter. There is no difference in I/O
>>>>> performance between the two methods. "
>>>>>
>>>>> Just wanted to revisit this topic and find out if anyone has heard
>>>>> anything
>>>>> more regarding a possible USB interface for the K3. I know it's not for
>>>>> everyone, but for myself and perhaps others out there, the ability to
>>>>> carry
>>>>> all data, including audio on a single cable would be convenient. Right
>>>>> now,
>>>>> I'm using a Keyspan USB to RS232 adapter for data, along with two separate
>>>>> stereo cables for audio. I don't have any real complaints with that setup,
>>>>> but could be problematic when transferring the rig around from computer to
>>>>> computer.
>>>>>
>>>> ______________________________________________________________
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>>>>
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>>>
>
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