[time-nuts] Halcyon OFS

paul swed paulswedb at gmail.com
Mon Jun 19 14:57:14 EDT 2017


Use what you can.
Regards

On Mon, Jun 19, 2017 at 1:53 PM, Bob kb8tq <kb8tq at n1k.org> wrote:

> Hi
>
> So let’s see, 140 feet that way would be three yards over … that way
> crosses the street and makes
> it to the back of his yard …. this way is past the back of the lot and
> four lots down …. that other way
> is over the other street and into his front yard ….
>
> Hmm …. not likely to work here :)
>
> Bob
>
> > On Jun 19, 2017, at 1:23 PM, paul swed <paulswedb at gmail.com> wrote:
> >
> > Ole
> > I may be able to give you some insight. I live some 1500 + miles from
> WWVB
> > in the US on the east coast. Not a favored transmission direction.
> > So for years I did the small loop and loop stick game.
> > Then 5 years ago I built a real shielded loop. 10' X 10' 800 ft of wire
> > approx. Then a preamp. Its sits 140 ft away from anything in the woods
> > about 10 ft off the ground.
> > The difference it has made in my ability to consistently use wwvb is
> > amazing. Daytime was 20-30uv maybe now 300uv and at night 1000uv and
> more.
> >
> > The loop was cheap to build. Get 25 conductor surplus shielded cable. It
> > doesn't have to be 25 wires especially since you are at 200 KHz.
> > See if that doesn't help you in Denmark.
> > Regards
> > Paul
> > WB8TSL
> >
> >
> > On Mon, Jun 19, 2017 at 12:40 PM, Ole Stender Nielsen <
> olstni at mail.tele.dk>
> > wrote:
> >
> >> I got a Halcyon OFS-1 a while back, and found it was virtually
> impossible
> >> to use here in Denmark, which seems to be located too far away from the
> >> Allouis (162 kHz) or Droitwich (198 kHz) transmitter sites. One major
> >> design flaw of the OFS-1 is the digital divider used to divide an analog
> >> signal.
> >> You can find more information about an experimental modification to
> >> increase the robustness and usefulness of the OFS-1 here:
> >> http://dabbledoo.weebly.com/halcyon-ofs-1.html
> >>
> >> Best regards
> >> Ole
> >>
> >>
> >>
> >> Den 19-06-2017 kl. 17:15 skrev Clint Jay:
> >>
> >>> Mine is somewhat different to that model, the case is the same as the
> >>> leftmost one but the board is quite different to the middle picture.
> >>>
> >>> I'll post some links to pictures of the internals and start drawing out
> >>> the
> >>> circuit over the coming few days.
> >>>
> >>>
> >>>
> >>>
> >>> On 19 June 2017 at 14:29, paul swed <paulswedb at gmail.com> wrote:
> >>>
> >>> Great pix can be found here and absolutely can easily be reverse
> >>>> engineered.
> >>>> https://www.vintage-radio.net/forum/showthread.php?t=97999
> >>>> Very simple straight forward design.
> >>>> Regards
> >>>> Paul
> >>>> WB8TSL
> >>>>
> >>>> On Mon, Jun 19, 2017 at 9:25 AM, paul swed <paulswedb at gmail.com>
> wrote:
> >>>>
> >>>> Hello to the group. I suspect I will never see such a unit in the
> states.
> >>>>> Also it wouldn't be useful.
> >>>>> But that said its sounds as though its a traditional simple receiver
> >>>>> that
> >>>>> should be able to be reverse engineered. At least for the signal and
> >>>>> locking chain. If a micro is involved then things get fuzzy fast.
> Anyhow
> >>>>> good luck with you digging in.
> >>>>> Regards
> >>>>> Paul
> >>>>> WB8TSL
> >>>>>
> >>>>> On Mon, Jun 19, 2017 at 8:27 AM, Clint Jay <cjaysharp at gmail.com>
> wrote:
> >>>>>
> >>>>> Thank you Stephen, Nigel, I'll take some pictures of the board in my
> >>>>>>
> >>>>> OFS-1
> >>>>
> >>>>> but it doesn't match any of the pictures I've tracked down so far.
> >>>>>>
> >>>>>> Interesting that the board mounted on the rear of the enclosure with
> >>>>>> the
> >>>>>> trimmers appears to be Vero or perf board of some description...
> >>>>>>
> >>>>>> On 19 June 2017 at 11:54, Stephen Tompsett (G8LYB) <
> >>>>>>
> >>>>> stephen at tompsett.net>
> >>>>
> >>>>> wrote:
> >>>>>>
> >>>>>> I have a little Halcyon information I managed to find a few years
> ago
> >>>>>>> when I acquired a couple of PFS units. It includes a brief
> document on
> >>>>>>> OFS alignment.
> >>>>>>>
> >>>>>>> I'll mail the documentation to you directly...
> >>>>>>>
> >>>>>>>
> >>>>>>> On 19/06/2017 10:17, Clint Jay wrote:
> >>>>>>>
> >>>>>>>> I have been given a Halcyon Electronics OFS1 standard which seems
> to
> >>>>>>>>
> >>>>>>> work,
> >>>>>>>
> >>>>>>>> it's a version that has 198KHz and 162KHz selector on the fron and
> >>>>>>>>
> >>>>>>> after
> >>>>>>
> >>>>>>> a
> >>>>>>>
> >>>>>>>> reasonable period of time it displays 'lock' and gives a nicely
> >>>>>>>>
> >>>>>>> stable
> >>>>
> >>>>> 1,10
> >>>>>>>
> >>>>>>>> and 10 MHz output on the front panel BNCs, (I know, it should be
> 1,5
> >>>>>>>>
> >>>>>>> and
> >>>>>>
> >>>>>>> 10MHz out, read on)
> >>>>>>>>
> >>>>>>>> Does anyone know of a PDF manual? This version has two KHz
> crystals
> >>>>>>>>
> >>>>>>> inside
> >>>>>>>
> >>>>>>>> it and I'd like to see how/if it's been modified so a manual with
> a
> >>>>>>>> schematic would be even more useful.
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> --
> >>>>>>> Stephen Tompsett (G8LYB)
> >>>>>>> Tel: 01788 578940
> >>>>>>> Mob: 07956 855816
> >>>>>>>
> >>>>>>> _______________________________________________
> >>>>>>> time-nuts mailing list -- time-nuts at febo.com
> >>>>>>> To unsubscribe, go to https://www.febo.com/cgi-bin/
> >>>>>>> mailman/listinfo/time-nuts
> >>>>>>> and follow the instructions there.
> >>>>>>>
> >>>>>>>
> >>>>>>
> >>>>>> --
> >>>>>> Clint.
> >>>>>>
> >>>>>> *No trees were harmed in the sending of this mail. However, a large
> >>>>>>
> >>>>> number
> >>>>
> >>>>> of electrons were greatly inconvenienced.*
> >>>>>> _______________________________________________
> >>>>>> time-nuts mailing list -- time-nuts at febo.com
> >>>>>> To unsubscribe, go to https://www.febo.com/cgi-bin/m
> >>>>>> ailman/listinfo/time-nuts
> >>>>>> and follow the instructions there.
> >>>>>>
> >>>>>>
> >>>>> _______________________________________________
> >>>> time-nuts mailing list -- time-nuts at 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 at febo.com
> >> To unsubscribe, go to https://www.febo.com/cgi-bin/m
> >> ailman/listinfo/time-nuts
> >> and follow the instructions there.
> >>
> > _______________________________________________
> > time-nuts mailing list -- time-nuts at 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 at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/
> mailman/listinfo/time-nuts
> and follow the instructions there.
>


More information about the time-nuts mailing list