[GreenKeys] Dovetron LED tuning indicator

[Harold Hallikainen]

That's a clever circuit! I use a small XY scope on my Flesher TU-170. The
scope is
https://accudiy.com/products/wave2-2-channel-oscilloscope?variant=40004991156318
. You can see it with the TU-170 at https://w6iwi.org/rtty/tu170/ .

Harold
https://w6iwi.org


On Mon, April 13, 2026 9:25 am, Duncan Brown via GreenKeys wrote:
> Len,
>
>
> A simpler version is the Heathkit HD-3006 "Crossfire".
>
>
> Schematic enclosed.
>
>
> Have fun,
>
>
> Duncan
> K2OEQ
>
>
>
> On 4/13/2026 11:10 AM, Ken LoCasale via GreenKeys wrote:
>
>> Gang,
>>
>>
>> Has anyone built an equivalent LED tuning indicator for the Dovetron
>> mpc-1000 series, similar or simpler, to the SSD-100K.
>>
>> Thanks,
>>
>>
>> ken
>>
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>
>>>> Jordan Spencer Cunningham's GreenKeys Search Tool:
>>>> https://teletype.net/gksearch
>>>> 2002-to-present greenkeys archive:
>>>> http://mailman.qth.net/pipermail/greenkeys/
>>>> 1998-to-2001 greenkeys archive:
>>>> http://mailman.qth.net/archive/greenkeys/greenkeys.html
>>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
>>>> http://comcents.com/tty/greenkeyssearch.html
>>>>
>
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