Along those same lines, two distinct SAM selections, one for Broadcast SWL and another for Amateur AM. Allow each to have scaling parameters. The parameters could be Lock Sensitivity and the other Lock Window. The sensitivity is pretty much self explanatory and could be expressed in terms of db. The Lock Window could provide a +/- X Hz window that spreads across the target center frequency for SAM to operate within, scalable by the individual operator. Just thinking out loud.
73, Mike W5CUL -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Saturday, September 15, 2012 12:49 PM To: [email protected] Subject: Re: [FlexEdge] [FlexRadio] can we do this On 9/15/2012 1:17 PM, Gedas wrote: > I don't know the answer to that but since you mentioned SWL, I just > have to say how pleased I was last night tuning around the various > SW bands around midnight. Set the 5000A to a nice wide BW, SAM, and > a set of high-fidelity bookshelf speakers was a real treat for me ! > Sure sounds different from my ole SB-313 days 35 years ago. > > Gedas, W8BYA > Gallery at http://gedas.cc [...] I agree that PowerSDR and my SDR-1000 together make a superb, high fidelity HF receiver. Clean, super clean, with full frequency response if the transmitting station, your audio amp, and speakers are up to the task. The best! There are some serious issues with Synchronous AM (SAM) reception, though. The SAM detector in 2.3.5 loses lock _way_ too easily. Perhaps this is a result of listening to AM ham operators (I am one, too, so this is not a criticism of them) who want quick lock-up on off-frequency stations when operating break-in. But the detector loses lock now in deep selective fades and tries to lock up on the strongest audio sideband component. It does the same on DSBRC and SSBRC (like WBCQ runs) all the time. So, because of its current "easy lock and unlock" parameters, it fails to do one of the main things that a SAM detector should do: keep locked during fades, selective fades, and reduced carrier reception. So I second (or third) the motion to create a user selection that will not allow the SAM detector to unlock so easily, and also an option to _not lock at all_ on carriers more than, say, 40 Hz from center. With my best, Kevin, WB4AIO. _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software innovation and other technical SDR topics. _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software innovation and other technical SDR topics.
