Nick, this is a nice description and the audio samples are great. I appreciate the explanation and response, it all makes perfect sense now.
Thanks, -Tim On Fri, 2012-09-07 at 21:25 +0000, Nick Hall-Patch wrote: > Here you go Tim. http://www3.telus.net/public/shallpat/4tim/ > contains two .wav files from 1333UT this morning, both in LSB, one > with the receiver tuned to 828.4kHz, the other tuned to 738.4 kHz > > There's a faster SAH on 828; if you play back the file on a spectral > display program, you'd see one het at 400.05 Hz, the other at > 402.7Hz, 2.65Hz separation, so the swishing sound repeats about 2 1/2 > times per second. I suspect these could be 3GI and JOBB?? (the > MWoffset list says that they have about a 1.5Hz separation, but the > records are from 5 and 6 years ago. Guess I should try measuring > them when I know for sure which station I'm hearing!) > > 738 has a slightly slower SAH (the two carriers are closer together), > but it also sounds a bit more complex, because there are at least > five (!) different hets there: 396.5, 400.9 and 401.5 Hz, with the > two strongest forming the slower SAH (compared with 828) at 398.0 and > 399.4Hz The strongest are likely 2NR and R. Polynesie? Both were > heard this morning. > > Hope this helps. > > Nick > > At 10:51 07-09-12, you wrote: > > > >I see a lot of talk about SAH's (sub-audible hets I presume?). Can > >someone provide good audio demonstrating this phenomena? > > > > > _______________________________________________ > IRCA mailing list > IRCA@hard-core-dx.com > http://montreal.kotalampi.com/mailman/listinfo/irca > > Opinions expressed in messages on this mailing list are those of the original > contributors and do not necessarily reflect the opinion of the IRCA, its > editors, publishing staff, or officers > > For more information: http://www.ircaonline.org > > To Post a message: irca@hard-core-dx.com > _______________________________________________ IRCA mailing list IRCA@hard-core-dx.com http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: irca@hard-core-dx.com
