[hpsdr] Re Munin low output on 6m

Dan Mitchell danmitchell at embarqmail.com
Thu Nov 21 15:17:36 PST 2013


Bob;
That's exactly what I did; works and looks fine.
73,
Dan, W0IQ


On Thu, Nov 21, 2013 at 2:54 PM, Bob Campbell <joan-bob at bigpond.net.au>wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi to all,
>
> I elected to put 3 of the caps down in place of the originals first and
> then the fourth on top of the middle one with an extra dose of solder on
> the ends.  So far its performing well and looks neat as well.
> 73's
> Bob.c
> Vk4xv
>
> On Thu, 2013-11-21 at 06:55 -0600, John wrote:
> > What is the best way to install the four new
> > capacitors that replace C25 C26 C27?
> >
> > Is it better to stack one on top of another or
> > try to stagger them across the existing pads?
> > Or maybe stagger the one stacked on top so that
> > it makes contact with two of the bottom capacitors?
> >
> > Best regards,
> >
> > John,  WoGN
> >
> >
> >
> >
> > At 03:30 AM 11/16/2013, Kjell Karlsen wrote:
> > >***** High Performance Software Defined Radio Discussion List *****
> > >
> > >Hi Al.
> > >
> > >I agree that the problem might be one of the capacitors. All my problems
> > >with low power on 6 meter has been with the output transformer and
> > >components around it.
> > >
> > >Please report back when you have tested with new capacitors.
> > >
> > >73, Kjell
> > >
> > >
> > >
> > >
> > >
> > >På Sat, 16 Nov 2013 00:33:28 +0100, skrev Bob Campbell
> > ><joan-bob at bigpond.net.au>:
> > >
> > >>***** High Performance Software Defined Radio Discussion List *****
> > >>
> > >>Hi Al,
> > >>
> > >>Check caps C25 C26 C27 are all ok.
> > >>
> > >>Mine failed when I went to load it up on 6m, blew the cermic cap apart.
> > >>
> > >>As Kjell suggested in a previous post replace these caps with four
> 220pf
> > >>500vw 1206 caps.  Since doing this mine has been ok.  I suspect with
> > >>this mod the current is shared evenly between all 4 caps and the
> circuit
> > >>is much more stable and I have no trouble getting the desired output on
> > >>6m now.
> > >>
> > >>73's
> > >>Bob.c
> > >>Vk4xv
> > >>
> > >>_______________________________________________
> >
> >
>
>
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