[time-nuts] HP 105B Modification

[John Miles]

> > If it helps I can send you some LTSpice schematics so that you can
> > simulate the circuit for yourself.
> > The breadboards behave as predicted by the simulations at 10MHz.
> >
> > John Miles has done some preliminary phase noise measurements on his
> > version.
> >
> > The transformers are wound on binocular ferrite cores.
> > I used some 14mm (long) cores intended for 40MHz to 220MHz (I had some)
> > operation in my breadboard which works well at 5MHz and 10Mhz.
>
> You can also use an off-the-shelf Mini-Circuits transformer for low-power
> applications.  The T13-1 was the one I tried.  I'll stick some of
> the plots
> up on the web later tonight if possible.

See http://www.ke5fx.com/norton.htm for measurements and connection details
of the copy of Bruce's amp that I added to my 5061A.

-- john, KE5FX