[Aavso-sid-list] Gyrator II receiver

[Mike Thompson]

Alex,

  Good advice. I'll try reading the amplifier gain.

Thanks
Mike T.

--- Alexmcw <amcwill417 at msn.com> wrote:

> The difference can depend on angle of sun (i.e.,
> season), the propagation 
> path, etc.  There can and will be day to day
> variations. Can you look at the 
> signal after amplification and before rectification
> by using an 
> oscilloscope?  Turning the gain all the way up could
> possibly overload the 
> amplifier.  Try turning the gain down and measure
> with your voltmeter to see 
> if the proportion remains about the same : (19 - 32
> mv) going to, say, (9 - 
> 16 mv).
> 
> Al McWilliams
> 
> 
> ----- Original Message ----- 
> From: "Mike Thompson" <mthompson14 at yahoo.com>
> To: <Aavso-sid-list at aavso.org>
> Sent: Thursday, March 27, 2008 9:25 AM
> Subject: [Aavso-sid-list] Gyrator II receiver
> 
> 
> > Hello All,
> >
> >  I just recently got my Gyrator II receiver up and
> > running. I've been running some tests, and all
> seems
> > to be working as to be expected with the receiver
> and
> > amplifier portion. However when I hook a meter up
> to
> > the rectifier-integrator with the gain turned all
> the
> > way up I am only seeing a difference of about 10
> > millivolts (19mV - 32mV) between sun up and sun
> down.
> >
> > Is this to bee expected or should I be reading
> higher
> > values? Could it be that my loop antenna just
> isn't
> > pulling in enough signal?
> >
> > Can anyone speak on this behalf?
> > Please Advise and thanks
> > Mike T.
> >
> >
> > 
> >
>
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> 



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