Thanks for all the great info Don. I have a feeling I’ll be posting up a few more questions here as I get into this build.
I have seen nothing but great reviews for the products and the people at Elecraft. And everything you’ve mentioned just reconfirms this. 73 - Sean On Jan 27, 2014, at 5:51 PM, Don Wilhelm <[email protected]> wrote: > Sean, > > The circuit is simple enough to build on perfboard if you don't want to go to > the trouble of making a board. If you do make boards, you might want to > consider making additional board and offering them for sale. There are > occasional requests for those boards. > > Build the version which lays the components flat on the board and attach it > to the back of the Control Board. That way everything except the audio > output is on the Control Board making the Control Board easy to remove for > servicing - plus it fits easily when the KPA100 is installed. For the output > connection, yes an unused microphone pin is an ideal place (for the Elecraft > microphones, use pin 5). Use a wire that is an adequate length to allow the > Control Board to be removed sufficiently that you can reach the microphone > configuration header on the back of the Front Panel. You can solder the > audio output wire to one of the 'computer' type jumpers that will plug right > into the microphone configuration header - make certain the 'jumper' is > plugged only into the side that is closest to the microphone jack. > > The only difference between Pauli's (SK) AF take off point and the one I used > is that Pauli's is prior to the muting transistors in the K2 and my points > are after the muting transistors. > If you prefer that the AF not be muted during TX, then you can still attach > to the back of the Control Board at the rear of CB J2 pins 1 and 2 - and is > quite independent of the KDSP2 (or KAF2) option. > > I might add that Pauli did buy one of my boards - I asked him "Why since he > had a wonderful interface already", and he replied that my Fixed Audio Output > board was an easy and simple solution. > > Good luck on getting that license. > > 73, > Don W3FPR > > > On 1/27/2014 6:08 PM, Sean Michael Johnston wrote: >> Hello All. >> >> I’m a newbie here and about to embark on building a K2. One of the many uses >> I have planned for the radio is to send emails over Winlink 2000 while at >> sea on a sailboat. >> I'd like to communicate with the SignaLink USB sound card through Winmor >> first and then eventually with a PACTOR 3 or 4 modem. >> >> I was thinking of building the fixed audio out designed by W3FPR & NØSS. My >> plan is to fabricate a pcb using the laser printer transfer method. I have >> recreated NØSS’s layout as a printable pdf >> (https://drive.google.com/file/d/0B_D41ceK5uSqM3VGa05BWXBhYkE/edit?usp=sharing), >> and am thinking I’ll run the line out to pin 5 of the 8-pin mic connection >> so I can have a single cable between the K2 and the SignaLink. >> >> My question is where is the best point in the K2 to source the AF inputs >> from? Is it cleaner to tap into the control board as is illustrated by >> W3FPR’s great instructions >> (http://www2.opparc.org/mirrors/n0ss/www.n0ss.net/w3fpr_fixed_af_output_for_the_k2_v2r1.pdf), >> or would it be a better signal if I tap into the KDSP2 board as >> recommended by EA3BLQ >> (http://www.qsl.net/ea3blq/downloads/k2di-pci_const_manual.pdf) for his >> Sound Card Interface? And is this the best way to get a line out from the >> K2, or has there been any newer advancements along those lines? >> >> I realize that I’m building a legacy product here, but from the activity >> I’ve seen on this mailing list, it’s definitely not dead yet. >> >> > > ______________________________________________________________ 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
