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. > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net
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