[hpsdr] 10/12m coil windings (Re: Angelia_v4.2 firmware release)

[k3it]

Is there an easy way to identify which radios need a correction for 10/12m
coils?

Vasiliy


On Sun, Aug 24, 2014 at 9:43 AM, Joe Martin K5SO <k5so at valornet.com> wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
> > The short answer is yes, but if you happen to have an ANAN-series radio
> that has incorrect number of windings on the 10/12m filter toroids you will
> experience low output power on 10m.
>
>
> Excuse me.  A more accurate statement would’ve been:
>
> "The short answer is yes, but if you happen to have an ANAN-series radio
> that has incorrect number of windings on the 10/12m filter toroids you will
> experience a lower maximum output power on 10m than you will if the
> windings are correct.”
>
> 73, Joe K5SO
>
>
> On Aug 24, 2014, at 7:30 AM, Joe Martin K5SO wrote:
>
> > ***** High Performance Software Defined Radio Discussion List *****
> >
> > Hi Brian,
> >
> > The short answer is yes, but if you happen to have an ANAN-series radio
> that has incorrect number of windings on the 10/12m filter toroids you will
> experience low output power on 10m.
> >
> > The firmware uses correct switch-point frequencies for the Alex filter
> set, which is also the correct switch-point frequencies for the ANAN-series
> radios that have the correct windings on their filters.  It is my
> understanding that later versions of the ANAN series radios use correct
> windings on their 10/12m filters so their switch points should be identical
> to those in Alex.  Earlier versions of the ANAN series radios do not.
> >
> > The firmware “patch” used initially by Abhi to correct the 10m low power
> output for some ANAN series radios is not the ideal method for correcting
> the issue of low power output on 10m on those earlier ANAN radios, as the
> issue is actually a hardware issue, not a firmware or software issue.  If
> Abhi wishes to create a version of firmware that uses different switch
> points from Alex that’s his prerogative but you should be aware that the
> issue is not actually a firmware issue, it’s a hardware issue.
> >
> > The fact is that there should be only a single firmware version to use
> with each of the Hermes, Angelia, and Orion boards, respectively,
> regardless of whether the board are used in an ANAN-series configuration
> with the Apache Labs filters or in a stand alone configuration using Alex
> filters.  The "correct fix” for ANAN radios that have the low power output
> issue on 10m is to rewind the filter toroids for the 10/12 m filters on
> those radios, not to patch the firmware or software to use switch points
> that are different from the Alex filter design.
> >
> >
> > 73, Joe K5SO
> >
> > On Aug 24, 2014, at 6:38 AM, Brian D wrote:
> >
> >> Joe Martin K5SO <k5so at valornet.com> wrote:
> >>
> >>> ***** High Performance Software Defined Radio Discussion List *****
> >>>
> >>> All,
> >>>
> >>> Angelia_v4.2 firmware is available for download from
> >>>
> >>> http://k5so.com/HPSDR_downloads.html
> >>>
> >> Is this suitable for use in the ANAN range of tranceivers or does it
> need to
> >> be changed by Abhi for the different filter frequencies?
> >>
> >> --
> >> Brian D
> >> G3VGZ
> >>
> >> ---
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> >
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