[time-nuts] Halcyon OFS

[Ole Stender Nielsen]

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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>
>