Hi Bill, Good deal on the order in! As soon as they get past midnight then you should be close.
I have a whole handful of small transformers both from digikey and radio shack we got for club interface project. And bunches of optical coupled Darlingtons. And perfboard I used in the past. Also have a breadboard that just has three transformers ( for dual receive) with pairs of RCA connectors. I first just connected the cables directly to my laptop but the hum/noise was not acceptable. Even pulled the AC cord on the laptop and ran on batteries. But then I expected that based on early interfaces for my other pre-K3 radios. and back to the start of this thread. yes, the SignaLin-USB should be fine also. Especially if you happen to have one handy. 73, tom n4zpt On 5/3/2012 3:35 PM, Bill Conkling wrote: > Welllllllllllllll.... > > My KX3 is on the list, I'm near the top of Dec 28 (00:23:59) so I am not > sure at this point. I have a circuit board that has holes for a couple of > iso transformers, and a pot. Will prob put something together using it when > it gets here. > > Anxious in Williamsburg, > > bill nr4c > > -----Original Message----- > From: Tom Azlin N4ZPT [mailto:[email protected]] > Sent: Thursday, May 03, 2012 12:49 PM > To: [email protected] > Subject: Re: [Elecraft] K3-PSK/RTTY Question > > Hi Bill, > > For my K3 I do just as you say. A serial cable plus two audio cables > connected to the line in/out of my computer sound card and my K3. Tossed > my homebrew interface I used with my FT-1000 in the parts box. > > However my laptop does not have line in/out and so far the KX3 does not > have line in/out. I get odd noise that looks like hum plus some scruff > when I connect my KX3 directly to my laptop. It works but do not want to > transmit the noise. So some sort of isolation and level adjusting is > needed beyond just the computer sliders and KX3 mike gain and speaker > level adjustment. Seems to me that is. > > So for my KX3 I just picked up the TRRS and TRS right angle connectors > and plan to hook up one of my unterminated SL-USB cables ( short > Ethernet cut in half) to play. Given the SL-USB is in my go kit anyway > with my laptop. May use one of the inexpensive interface boards I found > on eBay with a couple transformers and transistor switch. Or just grab > some resistors and audio isolation transformers out of my parts boxes, > i.e. dust off my old interface board. > > So yes, with the KX3 seems an interface is needed. Was very happy to > read that in the future a firmware update might include having the > speaker out and microphone in be switched to line out and in for the > data modes. > > What do you use with your KX3??? > > 73, tom n4zpt > > > On 5/3/2012 9:32 AM, nr4c wrote: >> Hi, Steve, >> \ >> I really think the SL-USB is a real nice interface if you need an >> interface. But in my opinion, for the K3/KX3 it is over-kill. I use >> two stereo audio cables between the sound card and the K3 and it works >> just fine. The K3 is already buffered and isolated with transformers >> (KX3 will not be). Unless you need the sound card for computer sounds >> and/or other audio uses, I'd just use the computer sound card. PTT can >> be handled via the serial CAT cable. >> >> ....bill nr4c >> >> >> On Thu, 03 May 2012 07:32:45 -0400, Steve wrote: >>> Good Morning All, >>> I have a K3 and am awaiting my KX3....soon I hope... >>> My question is that I am wanting to put the K3 on >>> PSK and RTTY and I'm wondering if >>> my choice of the Signalink USP is a good choice >>> for these modes with the K3 and hopefully the KX3 >>> Tnx es VY73' >>> Steve W8CRH >>> SEMPER FI ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
