Mike!
Thanks for the schematic. I will try to build a similar thing with the
parts I have in my junk box.
Thanks you and
Cheers
OE3GHB
Gerhard
Am Montag, den 21.12.2009, 10:14 +0000 schrieb Mike Dennison:
> The circuiit and notes are at:
> http://homepage.ntlworld.com/mike.dennison/index/lf/timer.htm
> Please note that this was a junk box project and will need to be
> changed to suit the components you have available.
>
> Mike, G3XDV
> ==========
>
> > I had exactly the same problem with overheating and burned wires a
> > week ago. So for this reason I would be interested which kind of
> > "watchdog" you installed.
> >
> > Could you please make the schematic public?
> >
> > I think many of us have concerns about safety when the TX is on while
> > we are sleeping.
> >
> > 73
> >
> > OE3GHB
> >
> > Gerhard
> >
> >
> >
> > Am Sonntag, den 20.12.2009, 17:24 +0000 schrieb Mike Dennison:
> > > A successful test this afternoon has proved my new safety timer that
> > > cuts off the transmitter if it has been sending continuously for
> > > more than 7 minutes. This gives me more confidence to transmit
> > > overnight (after a worrying overheating incident a couple of weeks
> > > ago) and I will run some night-time beacons as soon as the weather
> > > becomes more reliable - more snow forecast here tonight.
> > >
> > > MIke, G3XDV
> > > ==========
> > >
> >
> >
> >
> >
>
>
>
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