I have a particular need which is not a digital interface per se, but need to know if this project addresses it, or if some subset addresses it. This will be used in ongoing rudimentary research on 160m antennas and ground phenomena currently under way.
I will need a fixed audio output from the RX which is independent of the AF gain control, which will be fed to a meter reading in dB. We will be taking field measurements on weak signals on small antennas from low level self-contained transmitters fitted with small antennas. I saw N0SS sell off his last remaining fixed audio boards before I realized what they were. I will probably be encouraging some local friends to outfit their K2's in a similar fashion. Also, is the fixed audio board file that N0SS has in a format that can be fed to one of these small quantity PCB companies, or would it need to be converted? 73, Guy. On Sun, Jun 6, 2010 at 11:47 PM, Don Wilhelm <w3...@embarqmail.com> wrote: > This is a great effort, and I applaud John for taking up this task. > Pauli had a great design, and I know there are many who would like to > reproduce it.. > Now to relate "the other half of the story" -- when I was offering kits > and boards for the W3FPR Fixed Audio Output, I was amazed to find that > one day that Pauli ordered one. I quickly sent him an email asking why, > since he had developed a great digital interface for the K2, and he > replied that my solution was quite simple and elegant by comparison. > Yes, the microphone and PTT switching must be done in an external > interface box (many do that), but just the addition of a fixed level > audio output alone is very helpful to working digital modes with the K2. > > If you are interested in this more simplified solution, check out either > the original design on my website www.w3fpr.com or see the updated board > that Tom Hammond N0SS developed which mounts easily between the Front > Panel and the Control Board. Tom no longer offers either the kits nor > the boards for this design, but he has offered to provide the board > layout to anyone interested. See www.n0ss.net for more information. > The design is not complex and can easily be implemented on perfboard if > you do not want to go the route of ordering a lot of boards (and selling > them to others) from FAR circuits or other board sources. > > 73, > Don W3FPR > > NQ3RP wrote: >> I've tried to find one of EA3BLQ's interface cards for the K2 but have not >> been successful. So I thought I would design a replacement since I've done >> PCB designs before. The problem is that if I do it, to keep the cost down, >> I would have to make a couple of dozen boards. So I wondered if there was >> any interest out there in obtaining one of his boards. My main interest is >> in making the K2DI VIII board on this page >> http://www.qsl.net/ea3blq/k2di_pci_tec_ang.htm . If you would like one >> please post a reply here. If I get enough responses I'll see about doing >> the run. If you want the K2DI PCI card also please state that also. If I >> get two dozen the cost should be about $20 per board ($40 for the two). >> If you would like a complete kit state that also. I could do the kit for >> around $49.50 for both boards and the electronic parts. >> > ______________________________________________________________ > 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
