The process itself may be trivial, but communication between it and the pmbo application, may or may not be trivial. I don't even know if the SBD part of scamp was designed as a unique process that could be run independently or if it had inter-process communications designed into it. It may very well have been written as a simple sub-routine in the scamp application instead. I'm not saying what you're recommending couldn't/shouldn't be done, I think it should be done sooner rather than later. I'm just saying that calling it trivial may be oversimplifying.
Jim WA0LYK --- In digitalradio@yahoogroups.com, "Dave Bernstein" <[EMAIL PROTECTED]> wrote: > > The PMBO server software is an an application, not an operating > system running on bare hardware. Assuming the PC hosting this > software runs Windows, Linux, or Unix, then hosting the SCAMP Busy > Detector (SBD) as an independent process would definitely be trivial. > > 73, > > Dave, AA6YQ > > > > > > > --- In digitalradio@yahoogroups.com, "jgorman01" <jg6164@> wrote: > > > > I really don't know anything about the pmbo software. What you > > describe may be trivial from a system analysis standpoint but > actually > > coding it may not be so easy. What you're describing is running a > > second process (SBD) and making the pmbo software communicate with > > that process. That may or may not be trivial depending on the pmbo > > software design. > > > > Jim > > WA0LYK > > > > --- In digitalradio@yahoogroups.com, "Dave Bernstein" <aa6yq@> > wrote: > > > > > > No, it's actually trivial: > > > > > > 1. The PMBO's tranceiver's audio output is currently connected to > the > > > Pactor Modem's audio input; add a connection to the soundcard > input > > > (this might require adding a soundcard if one isn't already > present > > > in the PC that hosts the PMBO server software) > > > > > > 2. The SCAMP Busy Detector (SBD) is incorporated in the PMBO > server > > > software (Server); this is entirely initialization and > configuration > > > (e.g. soundcard selection, detection thresholds). Once configured > and > > > initialized, the SBD is a black box with a single boolean output > that > > > indicates whether or not the current transceiver frequency is > busy. > > > > > > 3. The PMBO server software (Server) is in one of two states: > Idle, > > > or Processing a User Request; we need only modify its Idle state > > > behavior. When the SCAMP Busy Detector (SBD) transitions > from "not > > > busy" to "busy" while the Server is Idle, there are two > possibilities: > > > > > > a. the frequency is busy because a WinLink user is transmitting a > > > request to the PMBO > > > > > > b. the frequency is busy because another QSO has begun or become > > > audible due to changing propagation > > > > > > To distinguish between these two possibilities, the Server waits > X > > > milliseconds after the SBD first reports "busy frequency", where > X is > > > the worst-case time required by the Pactor Modem to decode and > report > > > an incoming WinLink request. If such a request arrives from the > > > Pactor Modem within this interval, then the Server processes it > as > > > usual, ignoring the SBD. If no such request arrives within the > > > interval, then the Server clamps the Pactor Modem into its reset > > > state, preventing transmission on the frequency; this clamped > reset > > > is maintained until the SBD reports "frequency clear" for Y > > > consecutive seconds, after which the Server re-initializes the > Pactor > > > Modem and returns to Idle. 60 < Y < 300. > > > > > > 73, > > > > > > Dave, AA6YQ > > > > > > > > > > > > --- In digitalradio@yahoogroups.com, "jgorman01" <jg6164@> wrote: > > > > > > > > I don't know how hard it would be to pull this part of the > software > > > > out and run it on its own AND to control a transmitter with it. > > > > Remember, the pmbo is probably seeing a CTS indication from the > > > pactor > > > > modem. You would have to use another receiver and pc running > scamp > > > > and somehow get the pmbo software to recognize the CTS from that > > > > route. Probably not easy. It might be easier to get SCS to > include > > > > it in their firmware. > > > > > > > > Jim > > > > WA0LYK > > > > > > > > --- In digitalradio@yahoogroups.com, "Dave Bernstein" <aa6yq@> > > > wrote: > > > > > > > > > > I agree with your point, Jim. However, it doesn't explain the > > > failure > > > > > of the WinLink organization to incorporate the SCAMP busy > > > detector in > > > > > each of their PMBOs. This would have no impact on WinLink > users, > > > and > > > > > minimal $ impact on PMBO operators. > > > > > > > > > > 73, > > > > > > > > > > Dave, AA6YQ > > > > > > > > > > > > > > >
