[time-nuts] Halcyon OFS

[Stephen Tompsett]

It's a Friday afternoon job!


On 19/06/2017 18:26, Clint Jay wrote:
> It seems I have a hybrid, on the front panel it's an OFS-1, on the serial
> number label it's an OFS-1A and on the PCB it's an OFS-2.
>
> http://imgur.com/a/brRou
>
> On 19 June 2017 at 17:40, 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
>>>>>>>
>>>>>>> _______________________________________________
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>>>>>>>
>>>>>>>
>>>>>> --
>>>>>> Clint.
>>>>>>
>>>>>> *No trees were harmed in the sending of this mail. However, a large
>>>>>>
>>>>> number
>>>>> of electrons were greatly inconvenienced.*
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>>>>>>
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>>>
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>
>

-- 
Stephen Tompsett