Re: [amsat-bb] Reverse-engineering the AIDC-3733 VCO

[John Harrington <johnh@xxxxxxxxxx>]

Hi, Laura.  Thanks for the info.  This squares with everything
discovered so far.  No doubt now, the VCO is a discrete
component design.  I hope to move it's upper limit upwards
by monkeying with the printed inductor.
Thanks again-  John  W5EME

laura halliday wrote:
> 
> John Harrington wrote:
> 
> >The part which must be the VCO and divide-by-256 is a little
> >8-pin SM package (tiny!) with the markings '510',  '9612',
> >and 'M53' on it, but no manufacturers' logo.  I think the
> >'9612' is the code date, and the '510' and 'M53' identify
> >it. Can anyone point me to a manufacturer or data
> >sheet?
> 
> Fujitsu MB510 2.7 GHz dual-modulus prescaler.
> 
> Since the application doesn't require frequency agility,
> they won't be using the dual-modulus part - just wire it
> for /256 (pin 3 open, pin 6 to Vcc) and be done with it.
> 
> The VCOs in these products are usually made from discrete
> components.
> 
> Laura Halliday VE7LDH     "Que les nuages soient notre
> Grid: CN89mg                     pied a terre..."
> ICBM: 49 15.042 N 122 59.053 W       - Hospital/Shafte
>
----
Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org