[hpsdr] HPSDR Update

Mon Nov 3 18:28:01 PST 2008

Bob

I most heartedly agree!

"Trample the slow ....  Hurdle the dead"

We move on! embracing and yet rejecting the past! Trancending, here the
geographic and political boundaries! 

Phil_H and Phil_C and Gerald Youngblood,  are only a few of so many, who
have grown amateur radio including yourself! Both from the truly giving
amateur sector as well as we gathered here in a totally open forum, as
devoted hobbyists! Giving it 'away for free', exchanging ideas for the love
of it, and the learning by new experience! Each giving "in kind" without
claim to what we did in the past, but rather what we can do in the future,
with whatever talent we have! Whether for $ or the hobby itself. It IS a
wonderful hobby!  

Politics and all be damned! The future is tomorrow! We ARE seeing the
'tomorrow' of Radio, here without the politics, and flamewars! Otherwise, if
someone else has a better idea, I hope to be there when they do, and, in my
old age, be able to recognize it! 

I loved the AMSAT meeting, and LOVED going with my friend Phil - VK6APH. We
both thoroughly enjoyed, and contributed to the interchange!! It is people
of all walks, who synergize the future! As a bonus I got to meet Phil's
wife, who is as wonderful as he!

As an end to my somewhat maudlin message I would like to recognize someone
who I snapped on camera, at AMSAT who has a foot in the past and in the
future of AMAST!

http://www.hamsdr.com/personaldirectory.aspx?id=905

There is MUCH to tell in this picture, about the future of amateur radio!
Look carefully at this picture of a contemplative leader. Look carefully
also of the onlookers from pensive to enthusiastic to bored! I think we can
tolerate all those except the bored!

BTW in USA: VOTE!

Thanks! 
Eric - AA4SW

-----Original Message-----
From: hpsdr-bounces at lists.hpsdr.org [mailto:hpsdr-bounces at lists.hpsdr.org]
On Behalf Of Bob McGwier
Sent: Sunday, November 02, 2008 5:14 PM
To: 'Phil Harman'; hpsdr at lists.hpsdr.org
Subject: Re: [hpsdr] HPSDR Update

***** High Performance Software Defined Radio Discussion List *****

ORDER YOUR MERCURY NOW.

http://www.tapr.org

Don't get left out.

Phil did a fantastic!! job with his talk.  He is the best "amateur" I know
at making this accessible by all  (where amateur is in the latin sense "for
the love of it") next to fred harris who is the best I ever heard period.

Bob

ARRL SDR Working Group Chair
Member: ARRL, AMSAT, AMSAT-DL, TAPR, Packrats,
NJQRP, QRP ARCI, QCWA, FRC.
"Trample the slow ....  Hurdle the dead"

-----Original Message-----
From: hpsdr-bounces at lists.hpsdr.org [mailto:hpsdr-bounces at lists.hpsdr.org]
On Behalf Of Phil Harman
Sent: Saturday, November 01, 2008 11:05 PM
To: hpsdr at lists.hpsdr.org
Subject: [hpsdr] HPSDR Update

***** High Performance Software Defined Radio Discussion List *****

All.

Just arrived home after a wonderful holiday on the  east coast of the USA.
It was great to meet old friends and make some new ones. I throughly enjoyed
the TAPR/ARRL DDC and the AMSAT Conference and many thanks to both
organisations for giving me the opportunity to present the progress we have
been making on HPSDR.

Whilst at DCC I had the opportuity to test a pre-producition Mercury board
with a PicoPSU.  Unfortunatly this does not look like a good combination
since, on the low bands a least,  the PSU generates a significant number of
spurs. That is not to say that all SMPSUs will cause problems, but at least
this particular model is not recomended.

It was also great to see the interest level in relation to Mercury moving up
as I toured the East Coast.  Just a couple of reasons why you may want to
think about increasing the number of boards you intend to order.

1. I have a prototype of Cyclops working and the performance looks very
good. I'm using Mercury at 96MHz as the second IF. To do so I bypass the
55MHz LPF on the front end, this is a permanent by-pass and not somthing
that is switchable - believe me we tried hard to make it switchable but this
introduced a number of issues that we wern't willing to compromise on.  If
you are interested in possibly adding Cyclops to your HPSDR boards in the
future then a dedicated Mercury board could be a wise investment.

2.  We intend that Mercury will support multiple receivers, and I'll have
some very exciting news on that subject shortly. Each receiver will share
the LTC2208 ADC and hence whatever antenna is connected to it. If you have a
multiband antenna - say a trapped vertical - this will allow you to listen
(and see) multiple bands at once. On the other hand if you have say a beam
on 6m and a wire antenna on 160m then some form of diplexer/combiner will be
required in order to receiver both bands at once.  An alternative, which we
propose to support in the future,  is to fit multiple Mercury boards on the
Atlas bus.  Each could be connected to a different antenna and overcome the
need for broadband antennas  or combining.

We will also start the Alpha build of Phoenix shortly as well as the design
and development of  Gibralter - more on that project shortly.

Still plenty of excitement in store for the HPSDR projects!

73's Phil...VK6APH

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