[minima] Re: A linear for the Minima
- From: <jerry@xxxxxxxxxxxxxxxx>
- To: minima@xxxxxxxxxxxxx
- Date: Sun, 23 Feb 2014 18:07:49 -0700
Glad to hear you're working on it Adrian. It would be nice to have a
little more space between the traces and a lot more room for the
toroids. For the guys making their own PCB's, and especially for the
old farts like me, and not using solder mask, really close tracks cause
a lot of spillovers. Tomorrow I get the four parts I'm missing and my
mainboard will be done. I can't wait to fire it up. Jerry
K5LRU
Harwood, Texas
> -------- Original Message --------
> Subject: [minima] Re: A linear for the Minima
> From: Adrian Preda <ady.preda@xxxxxxxxx>
> Date: Sun, February 23, 2014 1:44 pm
> To: "minima@xxxxxxxxxxxxx" <minima@xxxxxxxxxxxxx>
>
>
> Already started working on the PCB :)
>
> Adrian
> YO4HHP
>
>
> ________________________________
> From: "jerry@xxxxxxxxxxxxxxxx" <jerry@xxxxxxxxxxxxxxxx>
> To: minima@xxxxxxxxxxxxx
> Sent: Sunday, February 23, 2014 9:29 PM
> Subject: [minima] Re: A linear for the Minima
>
>
> Now you're cooking Farhan. That is a nice amp. A perfect match for the
> Minima, and cheap to build. Jerry
>
> K5LRU
> Harwood, Texas
>
> > -------- Original Message --------
> > Subject: [minima] A linear for the Minima
> > From: Ashhar Farhan <farhanbox@xxxxxxxxx>
> > Date: Sun, February 23, 2014 5:34 am
> > To: minima@xxxxxxxxxxxxx
> >
> >
> > I just finished a linear amp that is entirely RC-coupled except for the
> > power stage's output. I have built two of them and they appear to very
> > quite stable and clean. It uses just the 2N3904s in the chain except for
> > the power output stage.
> >
> > The details are here http://www.hfsignals.org/index.php/RF386
> >
> > It started with the a stupid question "Why can't the LM386 be used in an RF
> > linear?"
> >
> > I am particulary curious to know what value should one pick for the 100
> > ohms in the Q4. I am quite kicked by the one-line band-switching
> > arrangement.
> >
> > - farhan
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