Are there any tricks to getting a HP 117A to lock to the current WWVB transmissions. I have read the thread for the Spectracom receivers. Will this work with the 117A? Thanks 73 Glenn WB4UIV

When WWVB changed to BPSK, the phase-tracking receivers were rendered inoperative. Paul Swed has a tested design for a Costas Loop receiver front end and demod that properly tracks the BPSK carrier phase and routes it to a 117A or similar receiver. There are also some hacks that, knowing the time, invert the WWVB signal phase, in sync with the data, but no product that I know of. -John =============== > Are there any tricks to getting a HP 117A to lock to the current WWVB > transmissions. > I have read the thread for the Spectracom receivers. > Will this work with the 117A? > > Thanks > 73 > Glenn > WB4UIV > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > >

Johns Right the costas loop is specifically for phase tracking rcvrs like the 117. Its a general purpose solution that keeps you out of the insides. But that said you can take just the costas loop and integrate it into a 117. I strongly belive that statement doesn't really address how things may work. I will say the 117 with good tubes is pretty darn hot so it may work quite well. No intent to hack my 117s. Regards Paul WB8TSL On Tue, Jul 2, 2013 at 12:39 PM, J. Forster <jfor@quikus.com> wrote: > When WWVB changed to BPSK, the phase-tracking receivers were rendered > inoperative. > > Paul Swed has a tested design for a Costas Loop receiver front end and > demod that properly tracks the BPSK carrier phase and routes it to a 117A > or similar receiver. > > There are also some hacks that, knowing the time, invert the WWVB signal > phase, in sync with the data, but no product that I know of. > > -John > > =============== > > > > > Are there any tricks to getting a HP 117A to lock to the current WWVB > > transmissions. > > I have read the thread for the Spectracom receivers. > > Will this work with the 117A? > > > > Thanks > > 73 > > Glenn > > WB4UIV > > > > > > > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. >