Re: [Elecraft] Apple MacBook Pro Audio for PSK-31 with K2?
Alan, what MBP do you own? I have a 2010 15 MBP, and it has separate stereo input and output jacks. I am able to input anything the K3 spits out with nothing more than a regular stereo cable. 73, James K2QI On Thu, Dec 9, 2010 at 9:27 PM, Alan D. Wilcox a...@wilcoxengineering.com wrote: Hello, The MacBook Pro has a single 1/8 audio connection for both mic in and external-speaker output. Unfortunately, that disables the internal speakers, preventing their use for monitoring. Also, the single special plug needs a homebrew Y-cable to get the input and output on separate connectors. Before I over-complicate what should be a simple interface to the K2, does anyone have a success story with the MacBook Pro? Cheers, Alan Alan D. Wilcox, W3DVX 570-321-1516 http://WilcoxEngineering.com https://www.smashwords.com/books/view/28062 Williamsport, PA 17701 __ 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 -- 73 de James K2QI President UNARC/4U1UN __ 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
Re: [Elecraft] Apple MacBook Pro Audio for PSK-31 with K2?
Just about any old USB soundcard will work with a MacBook Pro - I use an old Creative USB Soundblaster that I picked up second hand. Noting that you can plug in an iPhone headset, I did experiment using an iPod Classic 4 pin 3.5mm to 3 x phono connectors but decided it was too work to sort out since the input would be at microphone level and would need a capacitor to remove the microphone bias voltage. Going with the USB soundcard was far easier. You can pick up some no-brand dongle versions for less than $10 on ebay. 73 Paul M1CNK __ 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
Re: [Elecraft] Apple MacBook Pro Audio for PSK-31 with K2?
On Dec 10, 2010, at 12/1011:32 AM, Paul Wilton wrote: Just about any old USB soundcard will work with a MacBook Pro - I use an old Creative USB Soundblaster that I picked up second hand. Noting that you can plug in an iPhone headset, I did experiment using an iPod Classic 4 pin 3.5mm to 3 x phono connectors but decided it was too work to sort out since the input would be at microphone level and would need a capacitor to remove the microphone bias voltage. Going with the USB soundcard was far easier. You can pick up some no-brand dongle versions for less than $10 on ebay. Many of the MacBook Pro models have an integrated analog audio and digital S/PDIF built into the common 1/8 phone jack. Either a plain wired 1/8 plug or a S/PDIF 1/8 plug will plug into that jack. For example, you can connect the fiber optical output from an Icom 7800 directly to the MacBook Pro as long as whatever software that you use can accept that one fixed sampling rate from the Icom. Perfect galvanic isolation. No RFI, no ground loops, no drivers. I had responded privately to the person who started this thread by recommending the cheap and simple Griffin Technology iMic (not the greatest noise floor, but probably sufficient for his intended purpose), and the SignaLink USB if he wants hard keyed PTT. 73 Chen, W7AY __ 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
Re: [Elecraft] Apple MacBook Pro Audio for PSK-31 with K2?
Thanks for all the replies! To answer questions: The MacBook Pro is the 13 with the faster cpu and larger drive. New production, just got it several weeks ago. There is only ONE audio connection: the required 1/8 plug is same as regular stereo plug but has tip and TWO rings. I cobbled up a Y-cable last evening, and I'm getting audio into the MBP. No way to hear the audio on the MBP tho; looks like I'll need to do a line-out jack on the K2 for constant volume to the MBP while I adjust the K2 volume to listening level for me. The MBP--K2 mic direct connection seems to work with VOX and I can watch ALC when tx. Doesn't look like I've got any ground loops, even with the MBP charger plugged in. The Griffin iMic looks like a good way to get separate in and out. As I understand it, when it's active, the internal mic and speakers are disabled. Yes? OTOH, the iMic would give me isolation. I'm somewhat concerned about my direct connections into the MBP. I don't know what circuit I'm working into. (Like a black box, but it's white with an apple on it.) At this point, I'll put an extra line-out jack on the K2. Maybe get the iMic ... Thanks again, Alan Alan D. Wilcox, W3DVX 570-321-1516 http://WilcoxEngineering.com https://www.smashwords.com/books/view/28062 Williamsport, PA 17701 On 12/9/10 9:27 PM, Alan D. Wilcox wrote: Hello, The MacBook Pro has a single 1/8 audio connection for both mic in and external-speaker output. Unfortunately, that disables the internal speakers, preventing their use for monitoring. Also, the single special plug needs a homebrew Y-cable to get the input and output on separate connectors. Before I over-complicate what should be a simple interface to the K2, does anyone have a success story with the MacBook Pro? Cheers, Alan Alan D. Wilcox, W3DVX 570-321-1516 http://WilcoxEngineering.com https://www.smashwords.com/books/view/28062 Williamsport, PA 17701 __ 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 This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Apple MacBook Pro Audio for PSK-31 with K2?
Hello, The MacBook Pro has a single 1/8 audio connection for both mic in and external-speaker output. Unfortunately, that disables the internal speakers, preventing their use for monitoring. Also, the single special plug needs a homebrew Y-cable to get the input and output on separate connectors. Before I over-complicate what should be a simple interface to the K2, does anyone have a success story with the MacBook Pro? Cheers, Alan Alan D. Wilcox, W3DVX 570-321-1516 http://WilcoxEngineering.com https://www.smashwords.com/books/view/28062 Williamsport, PA 17701 __ 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
Re: [Elecraft] Apple MacBook Pro Audio for PSK-31 with K2?
Alan, What flavor of MBP do you have that has only a single audio connection? Rick K6LE On 12/9/2010, at 6:27 , Alan D. Wilcox wrote: Hello, The MacBook Pro has a single 1/8 audio connection for both mic in and external-speaker output. Unfortunately, that disables the internal speakers, preventing their use for monitoring. Also, the single special plug needs a homebrew Y-cable to get the input and output on separate connectors. Before I over-complicate what should be a simple interface to the K2, does anyone have a success story with the MacBook Pro? Cheers, Alan Alan D. Wilcox, W3DVX 570-321-1516 http://WilcoxEngineering.com https://www.smashwords.com/books/view/28062 Williamsport, PA 17701 __ 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
Re: [Elecraft] Apple MacBook Pro Audio for PSK-31 with K2?
Alan I know it further complicates things, but what about a iMic USB outboard soundcard? 73 Stephen G4SJP On 10/12/2010 02:27, Alan D. Wilcox a...@wilcoxengineering.com wrote: Hello, The MacBook Pro has a single 1/8 audio connection for both mic in and external-speaker output. Unfortunately, that disables the internal speakers, preventing their use for monitoring. Also, the single special plug needs a homebrew Y-cable to get the input and output on separate connectors. Before I over-complicate what should be a simple interface to the K2, does anyone have a success story with the MacBook Pro? Cheers, Alan Alan D. Wilcox, W3DVX 570-321-1516 http://WilcoxEngineering.com https://www.smashwords.com/books/view/28062 Williamsport, PA 17701 __ 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 This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
