Don Wilhelm ha scritto: > Giulio, > > You did not say what microphones you were trying to use, only that > they were 'dynamic'. Are you attempting to use Pro-Audio > microphones? If so, check out the information provided by Jim Brown > K9YC at http://haminterfacing.pdf/. Do your microphones have adequate > output? Do they need Phantom Power? There can be many reasons you > are not having success. > > How does the audio sound from the K3 monitor. You said you did the > evaluation on 144 MHz, but what mode? If it is FM, then many have > reported issues with 'thin audio' on FM, and Elecraft is currently > working on improvement for that condition. How does the K3 sound with > the microphones on SSB? >
Currently I'm using a Shure SM57 dynamic mic. The others are brandless or unknown. The mic doesn't need phantom power, but I agree with you that the output level of the microphone maybe is a little low. The tests I run were on SSB only, no FM or AM. The sound on the K3 monitor seems perfect (and that points the problem elsewhere, that is a test I didn't make until a minute ago). After a brief test on hf (listening on a K2) the audio seems fairly better than on 144 MHz. I've a feeling about the XV144.... It seems that at a certain point in the IF path the signal become reduced in bandwidth, maybe the filters are a little off band.... 73 de Giulio IW3HVB ______________________________________________________________ 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
