Re: Win11 ??
"David McClain (as dbm at refined-audiometrics dot com)" <[email protected]>
| Newsgroups | gmane.lisp.lispworks.general |
|---|---|
| Message-ID | <[email protected]> |
Yes the Left channel is all from the main receiver, and the Right channel is from the GPSD-OCXO. I inject a DSB Reference Carrier pair into the receiver by feeding the generator output into a random wire laying nearby. I turn down the output of the generator to around 40 dBm, so as not to overpower the signal of interest coming in from WWV 15 MHz. The WWV signal, during the daytime, is booming strong at around 20 dB over S9. So I turn the RF gain in the receiver down until I see no variation in the S-meter gain, and the resulting audio coming out is below -10 dBFS into the ADC. I have no AGC operating on the receiver. - DM > On Sep 3, 2025, at 11:33, Yuri Davidovsky <[email protected]> wrote: > > >> On 3 Sep 2025, at 19:53, David McClain <[email protected]> wrote: >> >> Yes, that 1 kHz signal is what I have injected into the right channel from my AM Modulated IRIG-B signal coming directly out of my GPSD-OCXO. The signal in the right channel is completely unaffected by external RF events. > > Interesting. Am I correct to understand that that issues in the data captured are not affecting the reference 1kHz signal? Meaning, you get some sort of a high frequency burst in the main signal in the L channel, but the reference signal in R remains intact? > > If so we can probably rule the issues with both the USB device and the machine out since it would not be plausible that the problem affects just the left channel, and if it does, you could simply swap the channels around and be done with it (losing the reference signal to the event but it likely would be less of an issue?). > > It is starting to look like the problem may be indeed lying somewhere up the processing chain. _______________________________________________ Lisp Hug - the mailing list for LispWorks users [email protected] http://www.lispworks.com/support/lisp-hug.html