[Amps] RE: [Amps] Subharmonic

[David Robbins]

No, I don't have a spectrum analyzer.  I just put a short clip lead on
another radio and hear it on that.  As expected it does have many
sidebands and when keyed with cw the clicks are very wide, obviously it
takes a while to lockup.  As one responder commented I can also get it
to generate wideband noise by pumping it outside the area it will lock
on, this also shows on the scope and is probably an example of chaotic
behavior. 


David Robbins K1TTT
e-mail: mailto:k1ttt@arrl.net
web: http://www.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
 

> -----Original Message-----
> From: Michael Tope [mailto:W4EF@dellroy.com]
> Sent: Thursday, May 23, 2002 14:44
> To: i4jmy@iol.it; W8JI@contesting.com
> Cc: robbins@surfglobal.net; amps@contesting.com
> Subject: Re: [Amps] RE: [Amps] Subharmonic
> 
> Mauri,
> 
> The top trace shows periodicity at a 6.5 MHz rate. Since
> the signal has a Fourier component at this frequency, if I
> pass it through a low-pass filter with a cutoff at say 7 MHz,
> I should get a clean 6.5 MHz sine wave (e.g. Fin/2).
> 
> [Dave, do you have a spectrum analyzer, or can you hear
> the 6.5 MHz signal on a receiver?]
> 
> Mike, W4EF............................
> 
> ----- Original Message -----
> From: <i4jmy@iol.it>
> To: <W8JI@contesting.com>
> Cc: <robbins@surfglobal.net>; <amps@contesting.com>
> Sent: Thursday, May 23, 2002 3:03 AM
> Subject: [Amps] RE: [Amps] Subharmonic
> 
> 
> >
> > >
> > > > Check out http://www.k1ttt.net/subharmonics/subharmonic.htm for
the
> > >
> > > Doesn't seem to work. I just get a blank page. Rest of site is
OK.73,
> > > Tom W8JI
> > > W8JI@contesting.com
> >
> > It works but you need to download an image that's quite big and it
> > takes time.
> >
> > To me, anyway, it doesn't say anything else than what already
discussed.
> >
> > I see two generators, one feed and kicked by the other, one low
> > impedance the other very high, both producing two fundamentals with
> > harmonics of higher order.
> >
> > No subharmonics.
> >
> > 73,
> > Mauri I4JMY
> >
> >
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> >
>