[hpsdr] ANAN-100D Angelia_test_v3.9 code

[Brian Lloyd]

On Sun, Feb 9, 2014 at 1:37 PM, Joe Martin K5SO <k5so at valornet.com> wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
> Thanks, Bruce.  Great to hear it!
>

When doing the calibration one thing I noticed that surprised me is that
gain is not consistent. Used to be on my ANAN-100D and ANAN-10 that gain
was steadily lower going from 160m to 6m. I now have some bumps where not
expected, e.g. the PA gain is higher for 15m than for 17m.

Hmm, the relay drivers for the PA BPF are a pair of TPIC6B595 shift
registers. That means that it would be possible to shift in two bits and
select two of the BPF in parallel. That might have a significant effect on
the passband ripple. Can you confirm that only one bit gets loaded into the
shift register?

-- 
Brian Lloyd, WB6RQN/J79BPL
706 Flightline Drive
Spring Branch, TX 78070
brian at lloyd.com
+1.916.877.5067
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/attachments/20140209/3b09ca40/attachment-0004.htm>