Mike
What way have you it configured regarding antenna.
mal/g3kev
----- Original Message -----
From: "Mike.WE0H" <[email protected]>
To: <[email protected]>
Sent: Monday, May 31, 2010 4:03 AM
Subject: Re: LF: 8.97kc - TV transformer info needed
> Well worth testing. There might be some other transformers that work and
> we won't know which ones until someone tests them. Looks like 4kc is
> the peak of efficiency on that transformer you tested. I found 5.8kc is
> the best efficiency on my TV transformer.
>
> Mike
> WE0H
>
>
>
>
> John B wrote:
> > Hi Mike, LFers,
> >
> > I grabbed one of my many MOTs and ran some tests with the primary
connected to a signal generator's 600 ohm
> > output and the secondary connected to a VTVM. The measured L of the
primary is .047 H and the secondary L is
> > 16 H. The turns ratio (120 Volt Primary) is 1:18 give or take a bit.
> >
> > With the signal generator set at 10 volts RMS, the secondary voltage was
measured at 1 kHz. steps as below:
> >
> > Freq. in kHz. Sec. voltage
> >
> > 1 120
> > 2 150
> > 3 190
> > 4 250
> > 5 210
> > 6 160
> > 7 140
> > 8 110
> > 9 85
> > 10 60
> >
> > The results are poor, just as you found Mike, so it looks like we can
rule out using MOTs for Dreamers Band.
> > It's about what one might expect from a transformer designed for 60 Hz.
operation.
> >
> > 73, J.B., VE3EAR
> >
> > LowFER Beacon "EAR"
> > 188.830 kHz. QRSS30
>
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