[Flexradio] ARRL/TAPR DCC Sunday Lecture

[Robert McGwier]

Michelle Thompson, W5NYV, and I are doing the Sunday lecture on Spectrum
challenges for amateur radio.  That sounds boring, it won't be.

I will do boring parts as quickly as possible then we will use your analog
computer (brain) to do spectrum collaboration and your fun will be enhanced
by bringing your analog FM HT.

73s
Bob
N4HY

-- 
Bob McGwier
Founder, Federated Wireless, Inc
Founder and Technical Advisor, HawkEye 360, Inc
Research Professor Virginia Tech
Chief Scientist:  The Ted and Karyn Hume Center for National Security and
Technology
Senior Member IEEE, Facebook: N4HYBob, ARS: N4HY
Faculty Advisor Virginia Tech Amateur Radio Assn. (K4KDJ)
Director of AMSAT and member of PVRC, TAPR, and life member of ARRL and
AMSAT
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[Flexradio] Studying the Ionosphere during an Eclipse

[Robert McGwier]

http://hamsci.org/article/hamsci-eclipse-team-meets-dayton

73s
N4HY


-- 
Bob McGwier
Founder, Federated Wireless, Inc
Founder and Technical Advisor, HawkEye 360, Inc
Research Professor Virginia Tech
Chief Scientist:  The Ted and Karyn Hume Center for National Security and
Technology
Senior Member IEEE, Facebook: N4HYBob, ARS: N4HY
Faculty Advisor Virginia Tech Amateur Radio Assn. (K4KDJ)
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Re: [Flexradio] Sherwood Engineering Rates Flex 6700

[Robert McGwier]

You knew this was coming from one story.  The Flex 6300 is not as rugged a
receiver as the 6500 and 6700.  Yet in a field day station with a couple of
6300's and a 6700  NO INTERFERENCE WAS NOTICED with THREE stations on 20
meters SIMULTANEOUSLY

https://community.flexradio.com/flexradio/topics/best_field_day_ever

and

https://www.youtube.com/watch?v=Cmmd9ABK0Aw

The war for top of the chart is over.  I don't claim there will ever be a
better receiver.  What I do claim is THERE IS NO NEED FOR FURTHER
IMPROVEMENT.  If you made it more sensitive, quieter, ...  you cannot use
that performance on 160-20 meters at least.What the Flex Signature
Series needs now is total dedication to software work,  firmware work,  and
interaction with contesters, DXers, ESSBers, AMers,  Digicomm folks, .
 to provide the software solutions they need to slash workflow in operation
and to provide all sorts of operating aids.

With the release of their API's, they've opened the hood enough for third
party development.

These are very exciting times.

Bob
N4HY


On Fri, Oct 17, 2014 at 1:13 PM, Steve Sterling  wrote:

> I was arguing with a friend who was certain his Icom rig's receiver was
> far superior to any Flex or Elecraft-- so I showed him the Sherwood
> Engineering receiver test data webpage (http://www.sherweng.com/table.html
> )
>
> I was pleased to see they have now tested a Flex 6700, and it sits proudly
> at the top of the list above the Hilberling
>
> Steve  WA7DUH
>
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Faculty Advisor Virginia Tech Amateur Radio Assn. (K4KDJ)
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[Flexradio] WTB Flex 5000

[Robert McGwier]

A friend wants to buy a fully loaded Flex 5000 in perfect condition.

Price in first email and an assertion it is in perfect working condition.
 Please send direct to me and not to the list.

Bob
N4HY


-- 
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Co-Owner and Technical Director, Federated Wireless, LLC
Professor Virginia Tech
Senior Member IEEE, Facebook: N4HYBob, ARS: N4HY
Faculty Advisor Virginia Tech Amateur Radio Assn. (K4KDJ)
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Re: [Flexradio] Well, rats!

[Robert McGwier]

What is usually on display is an open box of a functional radio inside
plexiglass and that done only to keep curious hands off the parts.

If you didn't see that at Belton, I bet it was busy elsewhere.

Bob
 On Oct 6, 2012 5:33 AM, "Tim Samaras"  wrote:

> All:
>
> At the Belton hamfest in TX hoping to see the 6700 in action(and sell some
> of the hoard of test equipment and other stuff I have) at the Flex
> booth.only to find an empty box with pretty lights on..
>
> Would have loved to see it work..even if the GUI isn't quite done..
>
> Rats!
>
> Tim Samaras
> WJ0G
>
>
>
> Sent from my iPhone
>
> On Oct 5, 2012, at 5:47 PM, "Jim KJ3P Perry"  wrote:
>
> > If your TX bandwidth filter is set for 200 to 2900, I don't see how EQ
> > settings much outside that range will do anything. So, I set 32, 63, 8K,
> 16K
> > all to -12dB. The 125 and 4K settings, while outside of your TX
> bandwidth,
> > may still have a mild effect (if any) because of the skirts of the EQ
> > response for those ranges (I'm not sure how the DSP EQ algorithms mirror
> > analog behavior). Of course, if I'm wrong, I'm sure this knowledgeable
> group
> > will straighten me out!
> >
> >
> >
> > I use the Heil headset, and have had good results as follows for general
> > (non-DX) QSOs:
> >
> >
> >
> > 125 -3, 250 -2, 500 0, 1K +2, 2K +5, 4K +6
> >
> >
> >
> > Remember that each little "tick" on the EQ chart represents 3 dB. The
> above
> > settings give a fine crisp response with the Heil, while leaving some of
> the
> > pleasant lower end. Disclaimer: this reflects my preference to avoid the
> big
> > bassy sound on SSB. You may feel differently.
> >
> >
> >
> > For DX punch, you might try this as a starting point:
> >
> >
> >
> > 125 -12, 250 -6, 500 -3, 1K +3, 2K +6, 4K +9
> >
> >
> >
> > The idea is to concentrate your TX energy in the part of the vocal range
> > that provides the most intelligibility, and ditch much of the low end
> that
> > robs power and does nothing for clarity.
> >
> >
> >
> > It occurs to me that if the TX bandwidth filter is not first in the DSP
> > audio chain, then excessive low/high audio frequencies might make things
> get
> > really strange when they hit the compander/compressor algorithms. In
> other
> > words, the raw mic audio should go through the TX filter first, then the
> > other processing later. I'd love to have someone confirm these DSP
> "circuit"
> > arrangements.
> >
> >
> >
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Re: [Flexradio] Video card for flex

[Robert McGwier]

But the GPU's, which we don't really use, are really nice in the NVidia.
 That said,  we should use best fit for us.

Bob
N4HY


On Wednesday, June 20, 2012, Tim Ellison wrote:

> Any ATI based video card is my first choice.  The anything with an NVIDIA
> GPU would be next.  The ATIs seem to have better drivers (less DPC latency)
>
> Tim Ellison
> On 6/19/2012 2:06 PM, Bob wrote:
>
>> Hi to the group,
>> I have a Flex5000 running on a 32 bit win7
>> powered intel board. I want to use two big screens what is a good card to
>> use?
>>  Regards Bob ZS6BXI
>>
>>
>
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Re: [Flexradio] Differences between the 5K & 6K ?

[Robert McGwier]

In the 6700, there are 8 slice receivers but each of those will be capable
of supporting multiple sub RX as in PSDR.  We have not decided how many
software receivers to run on the DaVinci per slice and if we did,  how you
might use them.

Right now,  I want one per slice to be perfect.

Bob
 On May 24, 2012 11:44 AM, "Jerry Flanders"  wrote:

> OOPS! I just re-read the PDF brochure: "Slice Receivers allow you to
> simultaneously visually and audibly monitor multiple frequencies within the
> same band or multiple bands ". Looks like we will have audio to use.
> Multiple means at least 2, and maybe 4/8. I don't see the hardware
> connection points, so maybe we will have audio streaming over the ethernet
> to the PC client. My error.
>
> Jerry W4UK
>
> At 10:10 AM 5/24/2012, Jerry Flanders wrote:
>
>> At 09:51 AM 5/24/2012, Tony Estep wrote:
>>
>>> On Thu, May 24, 2012 at 7:26 AM, W1JCW  wrote:
>>>
>>> > wanted to know what significant gains there would be...
>>>
>>> 
>>> John, a significant gain is that the new design can receive several
>>> slices
>>> of spectrum at once. In other words, you can run a number of the
>>> lightweight display/control windows at the same time, each pointing to
>>> different frequency slices. They can be on different bands, modes, etc.
>>>
>>
>>
>> We know that reception as panadaptor views of those 4-8 slices are
>> planned, but we don't know if we will have audio from 4-8 "receivers"
>> available for use in some worthwhile way. Might be disappointing to assume
>> that ordinary functions will all be available in an extraordinary radio,
>> then find they are not.
>>
>> Jerry W4UK
>>
>>
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>
>
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Re: [Flexradio] Differences between the 5K & 6K ?

[Robert McGwier]

Or tablet, pad, smartphone, or control surface...

On Thu, May 24, 2012 at 7:49 AM, Ross Stenberg
 wrote:
> I would expect the PC requirements for the 6K platform to be extremely
> modest since all of the "radio" processing is done by the ARM processor in
> the radio and the PC is simply the client for the GUI much like a Web
> browser. I believe Flex has speculated that even a netbook type computer
> will suffice. Just about any computer available with a Ethernet port today
> should be just fine since it will be primarily just used as a display
> interface and for secondary accessory processing.
>
>
> On 5/23/2012 5:58 PM, W1JCW wrote:
>>
>> What are the BIG differences between the two platforms ?
>>
>> I think the 6K has the entire platform in one unit with a PC portion ??
>>
>> I never had issues with the 5K as I build my own high end PC so that's not
>> a concern.
>>
>> 73-
>> W1JCW
>> John
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Re: [Flexradio] Flex 6000 Family Dynamic Range

[Robert McGwier]

Clay :

The difference is more than made up in the the fact that the new AD
operates at 245 MHz and the old AD is 200 kHz and you get huge processing
gain in the downsample and filter process greatly increases the dynamic
range.

Bob
 On May 18, 2012 4:46 PM, "Clay W7CE"  wrote:

> Did anyone else notice that the receivers on the 6500 and 6700 use a
> 16-bit ADC rather than 24-bit like the 5000A?  That reduces the dynamic
> range by up to 48 dB (same dynamic range as the 1500).  That will probably
> be fine on HF, but I already have occasional problems with ADC saturation
> on 6M when locals (within 25 miles) running 1500 watts are transmitting in
> the 96 or 192kHz bandpass of my current frequency.  Of course, I can
> eliminate the saturation by turning off my preamp, but then I can't hear
> the weak station I was trying to work.
>
> 73,
> Clay  W7CE
>
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Re: [Flexradio] Game Changer Ahead!

[Robert McGwier]

Doing a filter like this is typically low volume,  low return,  and
never ever repays the non-recurring engineering costs.  If someone has
a fantastic filter design, tested, and ready to go,  let Flex know and
they might even market it.

Bob
N4HY

On Mon, May 14, 2012 at 11:28 AM, Bill Diaz  wrote:
> How about improved MF capability?  WRC-2012 included the allocation of
> 472-479khz for the amateur service.
>
>    My Flex 1500 receiver is presently pretty much useless on MF freqs due to
> lack of an appropriate lowpass filter and the proximity of the AM broadcast
> band.
>
>    Would be nice if Flex came out with the external filters and firmware to
> support the proposed MF Amateur band.
>
> Bill KC9XG
>
>
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Re: [Flexradio] \"Deep Impact\" By Another Name?

[Robert McGwier]

I have a consulting relationship with Flex and I continue to work on
advising them on their products.

I am really loving all of the build up.


See you all at Dayton.  I will have my flex radio shirt on..



On Sun, May 13, 2012 at 7:42 PM, Brian Lloyd  wrote:
> On Sun, May 13, 2012 at 4:38 PM, Neal Campbell  wrote:
>
>> Barry,
>>
>> I do not know the relationship of Bob with Flex but I am 99.99% sure that
>> Frank departed  a long time ago. The days of that type of company died
>> around the time of the 3000 I think.
>>
>> You are disparaging some people that do not deserve it. Steve, Eric, Terry,
>> et. Al. are some fantastic software guys. The air in Austin must breed
>> software guys! They also have some great hardware talent also.
>>
>
> I think Neal has the right of it. Let's see what they come up with.
>
> My only comment on this is that Flex has been selling a very nice
> direct-sampling radio to the government for some time now. (The CDRX-3200.)
> So they know how to build a DS radio AND they have the software to make it
> work. I am keeping my fingers crossed.
>
>
>> Wait and see what they come up with, they have been successful so far!
>>
>
> Precisely.
>
>
>> 73
>> Neal
>>
>
> --
> Brian Lloyd, WB6RQN/J79BPL
> 3191 Western Dr.
> Cameron Park, CA 95682
> br...@lloyd.com
> +1.767.617.1365 (Dominica)
> +1.916.877.5067 (USA)
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Re: [Flexradio] Game Changer Ahead!

[Robert McGwier]

The CDRX-3200 is very capable receiver BUT it is most definitely a QSD radio.

http://www.flexradio.com/Products.aspx?topic=CDRX-3200

The direct sampling receiver (if you mean a big fast A/D hooked to the
front end (filters/preamps) is not on the web site yet because there
is development left on it before it is ready for widespread marketing.

I am loving all of the speculation.

Bob


On Mon, May 14, 2012 at 9:54 AM, Peter G. Viscarola  wrote:
>>
>> My hope? A module for the Flex-5000 that adds an Ethernet port for control
>> instead of FireWire. (I'm aware of the latency/jitter issues, however I
>> believe them to be solvable, and a guy can dream, right?)
>>
>
> +1
>
> Or, better, a brand new Direct Sampling radio that connects to the PC via 
> Ethernet.
>
>>
>>Flex has been selling a very nice direct-sampling radio to the government for 
>>some
>>time now. (The CDRX-3200.) So they know how to build a DS radio AND they have 
>>the
>>software to make it work. I am keeping my fingers crossed.
>>
>
> Yes, me too... pretty please!?!?
>
>
>> Game changer?  Makes me a bit
>> apprehensive seeing as how I just got my 5000 and haven't powered it
>> up yet.  I would not be a happy camper to have bought one of the very
>> last of the "OLD" ones instead of one of the first of the "new" ones.
>
> Do you expect the 5000 to be the last radio that Flex builds?
>
> The fact that new products are developed and released is the way of the 
> world.  People bought iPads and then the iPad 2 was introduced with more 
> features for the money.  People bought iPad2s and then the new iPad was 
> introduced, with more features for the money.
>
> Hey... come to think of it, I bought an SDR-1000 JUST before the Flex-5000 
> was announced.  I never felt bad about my purchase.
>
> Time... marches ON!
>
> Peter
> K1PGV
>
>
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Re: [Flexradio] Real Radios

[Robert McGwier]

Should be a world WITHOUT SDN

On Monday, April 30, 2012, Bob McGwier wrote:

> No network protection mechanism worthy of being called such will EVER
> survive in the modern environment with a CDN which starts with an SDN.
>
> You need multiple innovations these days and work is already being done in
> these areas (most of the IP is declared and protected).
>
> 1) A software defined router capable of taking rapid training of new rules
> and applying MANY MANY rules more than is currently sustainable by almost
> any available commercial router.
> 2) An AI capable of running both rule based and inference based update of
> the state of play and then making the changes to the routing rules.  This
> is the only way to be fast enough to ever hope to be useful these days and
> those which are surely to follow.
>
> A world with SDN informed by an AI making it a Cognitive DN is doomed to be
> as useful as coaxial based 10BaseT ethernet card is today.
>
> Bob
>
>
>
> On Mon, Apr 30, 2012 at 12:31 PM, Bill Tynan
> >wrote:
>
> > I can envision potential vulnerability in such SDNs.
> >
> > 73,
> >
> > Bill, W3XO
> > Also Flex 5000 owner for the past 3 years
> >
> >  Original Message - From: "Brad A. Steffler, M.D." <
> bst...@att.net 
> > >
> > To: >
> > Sent: Saturday, April 28, 2012 2:09 PM
> > Subject: [Flexradio] Real Radios
> >
> >
> >
> >  Apropos my earlier missive I submit the following quotation from the
> >> article referenced.
> >>
> >> "Networking giant Cisco has recently responded to rumors of SDN killing
> >> its business by stating that some customers do not want programmable
> >> networks."  In other words (wait for it!), "Real radios have knobs."
> There
> >> will always be those who refuse to move on with the constant advance in
> >> science and technology. That's their own problem.
> >>
> >> Again, thanks and kudos to Flex Radio for all you have done are doing
> and
> >> will do. We appreciate you guys.
> >>
> >> Brad A. Steffler
> >> KE4XJ
> >> 5000a owner
> >>
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> >>
> >
> >
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Re: [Flexradio] VAC 4.11

[Robert McGwier]

In 4.09 and worse in 4.10 were errors that seriously hampered the preferred
Windows Sound Host (WDMKS).  This version, 4.11, seems to have those
completely fixed this and greatly improved the performance in a number of
areas including the precision of the sampling rate emulation in software,
and many other things which are difficult to get right.

It is good to see that Muzychenko is still doing serious development on
this and making real progress in a number of areas.

Bob


On Fri, Mar 16, 2012 at 4:20 PM, Drax Felton  wrote:

> When I installed it, it dropped my CPU utilization and eliminated the false
> images that were appearing in my digi mode programs.  The Sample Rate
> Synchronization article from the kB helped too.
>
>
> -Original Message-
> From: flexradio-boun...@flex-radio.biz
> [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Dave Pease
> Sent: Friday, March 16, 2012 2:21 PM
> To: flexradio@flex-radio.biz
> Subject: [Flexradio] VAC 4.11
>
> For those of you who have upgraded to the latest VAC,  What was the
> advantage?  Why not leave things alone if everything is working?  Or is it
> a
> certain application that it works improves?
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Re: [Flexradio] Phantom Cat Ports

[Robert McGwier]

Very useful.  Hope this is added to the kb (if it isn't already there) for
these virtual com ports.

On Mon, Mar 12, 2012 at 7:01 PM, Bill  wrote:

> I read this and it showed how to rid zombie or phantom cat ports
> it may or may not help you, but it did no harm to my system after I
> performed the exorcism.
>
>
>
>Start
>Run
>Type cmd.exe in the textbox and click OK
>Type set devmgr_show_nonpresent_**devices=1 and hit ENTER
>Type cd\windows\system32 and hit ENTER
>Type start devmgmt.msc and hit ENTER
> rem: When the device manager opens, click the View menu
>Click Show Hidden Devices
>Click on the + sign next to the Ports to see the full list of Com ports
> being used.
>Highlight the port you wish to delete and then press delete.
>Accept when asked to do so and continue with any more that you wish to
> delete.
>
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Re: [Flexradio] CAT problem partially solved

[Robert McGwier]

On Carter Craigie's (N3AO) laptop  ,  we finally did a clean re-install for
other reasons (virus/spambot successful attack as in pay me lots of money
to recover your computer which kept being reintroduced from a jump drive)
 and that was the only way to get rid of the dad-blasted zombie ports.  It
is really aggravating that a port shows up in the list AND the control
panel that can see them cannot eliminate them.  I find this the single
worst shortcoming of an otherwise beyond useful tool.

Bob
N4HY


On Mon, Mar 12, 2012 at 8:17 PM, Ray, K9DUR  wrote:

> Tony,
>
> They are probably coming from registry entries that are deucedly difficult
> to get rid of.  I have run across this before.
>
> 73, Ray, K9DUR
> http://k9dur.info
>
> -Original Message-
> From: flexradio-boun...@flex-radio.biz
> [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Tony Estep
> Sent: Monday, March 12, 2012 6:20 PM
> To: FlexRadio reflector
> Subject: Re: [Flexradio] CAT problem partially solved
>
> On Mon, Mar 12, 2012 at 5:06 PM, David Edwards  wrote:
> >go into control panel and uninstall the drivers. They disappear from
> the device manager.
> > Next reboot they are back. Then you uninstall the ports again and next
> reboot they are back
> =
> Dave, did you try uninstalling them from device manager? It would seem that
> might kill 'em.
> Or maybe something is saved somewhere down in the bowels of VSPMgr.
> Maybe if you uninstall the whole VSPMgr and all its ports, erase its
> directory in Roaming, and start over they won't come back.
>
> They are coming from somewhere, and somewhere has to be either a file or a
> registry entry. I'd think those had to be created by VSPMgr, not by the OS.
> If it's a registry entry it's naturally harder to find it and kill it, but
> one way or the other there has to be a way.
>
> Tony KT0NY
>
>
>
> --
> http://www.isb.edu/faculty/facultydir.aspx?ddlFaculty=352
>
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Re: [Flexradio] Damage control - "designed for AM" ?

[Robert McGwier]

Let me state for the record that in writing the DSP code in DttSP,  no mode
has received more thought or effort than AM except CW.

I worked very hard on SAM,  and I worked very hard thinking through and
implementing "synchronous carrier added DSB " which allows very large
modulation index compared to "plate modulated AM".

The only way a Flex person could say this would be in the context of there
being essentially no easy low impact way to do monitor because of the need
to be off DC to get carrier because of the AC coupling of the D/A to QSE
which is critical to sufficient carrier suppression on SSB,  etc.

In other words this was a careless offhand remark without sufficient
context or taken completely out of context.

I am VERY proud of the AM work!

Bob
N4HY
 On Feb 25, 2012 7:04 PM, "Jim Barber"  wrote:

>
> I had to do a little damage control with a member of our regional AM group
> who was put off a bit about a potential 5K purchase because he was told a
> Flex employee had stated that the radio "was never designed with AM use in
> mind".
>
> Hearsay being what it is I don't know what was actually said, but I
> certainly hope it wasn't stated quite that way. The 5K works very well on
> AM; much better than any of the Japanese rigs, at least. Perhaps an
> expanded section in the manual would help - I've helped several AM'ers with
> the concept of 1:4 carrier vs modulated output. Once they "got" it and
> paused long enough to learn about the TX audio controls, they were fine.
>
> My .02 only, adjust for local currency.
>
> 73,
> Jim N7CXI
>
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Re: [Flexradio] 472-479 KHz receiving and transmitting ERP and antenna models

[Robert McGwier]

This won't help with the 475 band but let us know how well you receive WWVB
and other major known stations.

Good luck!
Bob


On Friday, February 24, 2012, Jerry  wrote:
> I just ordered a LF converter and we will see how it works.  Jerry
http://wb9kzy.com/lfconv.htm
>


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Re: [Flexradio] Misinformation about k3 being srd

[Robert McGwier]

Well,  okay.

On Thu, Dec 15, 2011 at 3:14 PM, Dave Beumer WØDHB  wrote:

> 15 days, you're allowed to have Christmas Day off :-)
>
> -Original Message-
> From: flexradio-boun...@flex-radio.biz
> [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Bob McGwier
> Sent: Thursday, December 15, 2011 12:37 PM
> To: Duane - N9DG
> Cc: FlexRadio@flex-radio.biz
> Subject: Re: [Flexradio] Misinformation about k3 being srd
>
> Now there we can all most certainly agree.  If they don't do the S part
> often enough to make it useful or at least exciting,  then the utility of
> the S part is to the manufacturer and not the user.
>
> One of the things I was involved with for Flex was the TNF.  I made an
> addition to the waveform processing software and the guys at Flex turned it
> into a work of art and all of us got a brand new radio with software
> change.
> Before that we turned a mediocre CW effort I was involve with to a really
> good break in effort done by the guys at Flex and .  we got a brand new
> radio.
>
> The TNF is the penultimate effort for me...  and I am working hard on the
> ultimate for me for the year now.  FINGERS CROSSED,  I still have 16 days
> HAHAHA
>
> Bob
> N4HY
>
>
> On Thu, Dec 15, 2011 at 1:56 PM, Duane - N9DG  wrote:
>
> >
> > If the OEM and/or third parties do not routinely write more "S" to
> > significantly expand range of capabilities and behaviors that the "D"
> > in "SDR" represents, then trying to decide whether a particular piece
> > of HW is an SDR or not is purely academic... At least from an end
> > user's perspective..
> >
> > Duane
> >
> >
> >
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Re: [Flexradio] Optimized XP or Win7 Configuration

[Robert McGwier]

Install GBoost and let it do it for you. It is an awesome utility designed
for gamers and thus is perfect for us.

Bob
N4HY
 On Nov 23, 2011 12:47 PM, "J.Gordon Beattie, Jr., W2TTT" 
wrote:

> Hi Folks!
> Is there a defined checklist of common Windows XP or 7 elements that need
> to
> be checked, adjusted, turned off, etc. to optimize the PC for use with the
> Flex?
>
> A how-to guide of this sort would be of great help, but I didn't see one
> around in the usual spots.  Am I missing something or is this not available
> in a consolidated package somewhere?
>
> Thanks & 73,
> Gordon Beattie, W2TTT
> 201.314.6964
>
>
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Re: [Flexradio] [FlexEdge] filter skirt

[Robert McGwier]

And think of doing this as efficiently without the display? FORGET IT!

We made as much impact when Eric and I developed the panadspter as anything
else we have done.  Imagine using the TNF without it.

How would one do it?

Bob
 On Sep 17, 2011 5:31 AM, "G0DDX"  wrote:
>
> Totally agree, my Flex 1500 absolutely rocks on CW and PSK31. Just love
> those filters. Also now we have those tuneable notch filters as well. I
have
> not played with them much, but they look like they are going to be very
> useful too.
>
> BIG thanks to the Flex team. My radio just keeps getting better and
better!
>
>
> Geoff
> G0DDX
> Fists: 15552
>
>
>
> -Original Message-
> From: flexradio-boun...@flex-radio.biz
> [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Michael Walker
> Sent: 16 September 2011 23:11
> To: flexradio@flex-radio.biz
> Subject: Re: [Flexradio] [FlexEdge] filter skirt
>
> Bill
>
> I believe that is the 'aha' moment for all of us.
>
> While we have all play with it on SSB, it isn't until you get into CW or a
> digital mode that you really see exactly what it does and how well.
>
> I had a similar situation one day running psk31 on 40m. A loud and wide
> over driven psk31 station came up beside me while I was working this guy I
> could barely see on the waterfall.
>
> I did the same thing and then I finished my qso.
>
> Pretty slick!
>
> Mike va3mw
>
> On Fri, Sep 16, 2011 at 1:55 PM, Bill  wrote:
>
>> I was listening to a JT65 station on 12 meters.
>> Normally I use the 3.0 wide filter to see all the stations transmitting.
>>
>> A LOUD cw station started up about 24.923,
>> I just grabbed that right panadaptor edge, pulled it over a tad and he
was
>> gone.
>> I could still 'SEE' his loud signal, but didn't hear it...
>> Brick wall filters RULE!
>>
>> --
>> ---
>> Any given expert has an equal and opposite expert.
>> ---
>> Bill H. in Chicagoland
>> Doing my best to annoy nearly everyone since 1945.
>> webcams at
> http://w9ol-towercam.webhop.**org
>> weather at http://hhweather.webhop.org
>> live weathercam chat hhweather.chatango.com
>>
>
>
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Re: [Flexradio] SSB is gone

[Robert McGwier]

Well! I have never done ANYTHING so dumb (since yesterday) 

Bob

Sent from my iPad

On Jul 31, 2011, at 7:29 PM, Neal Campbell  wrote:

> I sincerely am not  meaning to make fun of Greg but this is an example of my
> method of problem analysis!
> 
> I always assume that the most expensive part in the chain is  the one that
> is broken! Always!
> 
> 8 years ago my ring rotor stopped turning. It was winter, I had been reading
> somewhere stories of the ring rotor motors seizing up and I wasn't in great
> shape so I just leapt to the conclusion one of the motors had locked up.
> Ordered one and waited for warmer days. Finally Spring sprung and got out on
> the tower to replace it. Had a hard time taking the old one out and since it
> was bad, I damaged it in the extraction. Got the new one in and VOILA, it no
> turn! Got the VOM out and discovered that one lead in the telephone wire I
> had strung to control the rotor from inside the house had broken.
> Approximately $3 of wire. Now I had a new motor, a damaged old motor and
> needed a story to tell "the boyz" that didn't make me look like the idiot I
> am!
> 
> Sri, just had to relate my story!
> 
> 73
> Neal
> 
> On Sun, Jul 31, 2011 at 7:16 PM, Greg  wrote:
> 
>> Never mind.
>> 
>> Faulty SO2R switch...
>> 
>> 
>> 
>> 
>> On 7/31/2011 4:11 PM, Greg wrote:
>> 
>>> I had already updated to PSDR 2.1.5 and it has been working OK here.  This
>>> morning I was listening to my regular swap net but did not check in since I
>>> had some work to do outside.
>>> 
>>> Went to work some DX this afternoon and I have no audio output.  CW is
>>> working fine.  I have the mixer set correctly to the FP mic input but just
>>> no output at all.
>>> 
>>> Any ideas out there?
>>> 
>>> Thanks
>>> Greg
>>> 
>>> 
>>> 
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>> http://www.flexradio.com/
>> 
> 
> 
> 
> -- 
> Abroham Neal Software
> www.abrohamnealsoftware.com
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Re: [Flexradio] Reducing Latency

[Robert McGwier]

Increase the samplerate, decrease the dsp size and the audio buffer size.
All contribute.

Bob
N4HY
On Jul 21, 2011 3:59 PM, "Ted Trostle"  wrote:
> When running RMSExpress or V4Chat the latency needs to very low...I think
> less than 300ms. What changes can be made to the PWSDR settings or VAC
> settings to reduce the latency?? I have had some success by setting the
VAC
> buffer to 512, but I need to do better.
>
> Ted, WB2LOU
>
> --
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> Education is the only legal cure for Ignorance. The Stupidity of many is
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Re: [Flexradio] Silly question / Noise floor

[Robert McGwier]

Forgive the typo,  117 = 10 * 48000/4096 Hz.

On Wed, Jun 29, 2011 at 6:48 AM, Robert McGwier  wrote:

> Or put another way, if the filter is 10 bins wide (117 Hz = 10*4096/48000)
> the noise power in that 117 Hz is the sum of the noise lower in those ten
> bins and thus should be ten times or 10 dB bigger than the noise floor.
> This is what the meter reads: all the power, noise + signal, in the ten bins
> of the main part of the filter.  This does not account for the filter edges
> perfectly but the difference is minuscule because of the tremendous shape
> factor on the filter.
>
> Great discussion!
> Bob
> N4HY
>  On Jun 28, 2011 7:55 PM, "Graham Haddock"  wrote:
> > Hello Jean-Marc:
> >
> > Not a silly question at all. In fact, a great question.
> >
> > The panadaptor is fixed at 4096 bins. Each bin is essentially a receiver
> > with bandwidth
> > equal to the sample rate divided by 4096.
> >
> > Example: for a FLEX-1500, which has sample rate of 48,000 samples per
> > second,
> > the bin bandwidth is 48000/4096 = 11.7 Hz
> >
> > The noise level is lower on the panadaptor, because of the lower (bin)
> > bandwidth.
> > The difference in dB relative to the "S-Meter" window can be calculated
> as
> > the log of the difference in bandwidths.
> >
> > Example: The difference in noise level seen on the S-Meter, receiving
> > through
> > a CW filter of 500 Hz, and the panadaptor on a FLEX-1500 would be:
> >
> > dB = 10*LOG(Bandwidth-of-Receiver / Bandwidth-of-Panadaptor-Bin)
> > = 10 * LOG (500/11.7) = 16.3 dB
> >
> > So the panadaptor noise floor will appear to be 16 dB lower than the S
> Meter
> > value with a 500 Hz filter selected.
> >
> > This only applies to noise. The level of a narrow signal (one that will
> fit
> > entirely inside
> > of your filter) is independent of the filter bandwidth, so the level
> shown
> > is the true level
> > and no correction difference applies.
> >
> > --- Graham / KE9H
> > FlexRadio Systems
> >
> > ==
> >
> >
> > On Tue, Jun 28, 2011 at 11:14 AM, F1HDI  wrote:
> >
> >> Hello,
> >>
> >> In Powersdr, how is computed the values of the noise floor across the
> >> spectrum in spectrum, panafall modes ?.
> >> To be more specific, those values relate to which bandwitdh ?.
> >>
> >>
> >> Kind regards
> >> Jean-marc F1HDI
> >>
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Re: [Flexradio] Silly question / Noise floor

[Robert McGwier]

Or put another way, if the filter is 10 bins wide (117 Hz = 10*4096/48000)
the noise power in that 117 Hz is the sum of the noise lower in those ten
bins and thus should be ten times or 10 dB bigger than the noise floor.
This is what the meter reads: all the power, noise + signal, in the ten bins
of the main part of the filter.  This does not account for the filter edges
perfectly but the difference is minuscule because of the tremendous shape
factor on the filter.

Great discussion!
Bob
N4HY
 On Jun 28, 2011 7:55 PM, "Graham Haddock"  wrote:
> Hello Jean-Marc:
>
> Not a silly question at all. In fact, a great question.
>
> The panadaptor is fixed at 4096 bins. Each bin is essentially a receiver
> with bandwidth
> equal to the sample rate divided by 4096.
>
> Example: for a FLEX-1500, which has sample rate of 48,000 samples per
> second,
> the bin bandwidth is 48000/4096 = 11.7 Hz
>
> The noise level is lower on the panadaptor, because of the lower (bin)
> bandwidth.
> The difference in dB relative to the "S-Meter" window can be calculated as
> the log of the difference in bandwidths.
>
> Example: The difference in noise level seen on the S-Meter, receiving
> through
> a CW filter of 500 Hz, and the panadaptor on a FLEX-1500 would be:
>
> dB = 10*LOG(Bandwidth-of-Receiver / Bandwidth-of-Panadaptor-Bin)
> = 10 * LOG (500/11.7) = 16.3 dB
>
> So the panadaptor noise floor will appear to be 16 dB lower than the S
Meter
> value with a 500 Hz filter selected.
>
> This only applies to noise. The level of a narrow signal (one that will
fit
> entirely inside
> of your filter) is independent of the filter bandwidth, so the level shown
> is the true level
> and no correction difference applies.
>
> --- Graham / KE9H
> FlexRadio Systems
>
> ==
>
>
> On Tue, Jun 28, 2011 at 11:14 AM, F1HDI  wrote:
>
>> Hello,
>>
>> In Powersdr, how is computed the values of the noise floor across the
>> spectrum in spectrum, panafall modes ?.
>> To be more specific, those values relate to which bandwitdh ?.
>>
>>
>> Kind regards
>> Jean-marc F1HDI
>>
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Re: [Flexradio] audiodg.exe

[Robert McGwier]

Thanks!
On Jun 21, 2011 5:19 PM, "David McClain" 
wrote:
> Just found a nasty little "feature" in Win/Vista and Win/7, named
> "audiodg.exe". This is a "required" audio driver that attempts to
> isolate processes audio routing graphs for security purposes. Problem
> is, the cure is almost as bad as the disease they are trying to prevent.
>
> On my Dell laptop, the problem is so bad, that I see frequent long
> pauses where the GUI's become unresponsive, audio dropouts occur, and
> this presumably is the main culprit for the F1.5K audio dropouts.
>
> It is so bad on the Dell laptop, that even after disabling all audio
> "features" as indicated on the various complaint web pages for
> audiodg.exe, I still cannot run Sonar nor Cubase without long periods
> of slience, lots of stutters, and general unresponsiveness. It
> probably also adds to the DPC problems.
>
> The only audio editing program that works well is Adobe Audition. No
> doubt Adobe was aware of the problems in Win/Vista and Win/7 that
> they must have circumvented the Windows audio system with their own
> code. I can kill audiodg.exe and still run Audition with real audio
> output. Killing audiodg.exe otherwise disables all audio outptut from
> programs that "follow the rules".
>
> Just Google audiodg.exe and get an eyeful of the problems with this
> Windows "feature"...
>
>
> Dr. David McClain, N7AIG
> Chief Technical Officer
> Refined Audiometrics Laboratory
> 4391 N. Camino Ferreo
> Tucson, AZ 85750
>
> email: d...@refined-audiometrics.com
> phone: 1.520.529.2437
> web: http://refined-audiometrics.com
>
>
>
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Re: [Flexradio] Asus

[Robert McGwier]

Newegg carries this and the six slot one.  Easy Peazy.


On Fri, Mar 18, 2011 at 9:47 AM, paim  wrote:

> hello Neal
> i will try and look but may i ask you what is wrong with Asus board ??
> elan
>
> E.P
>
>
>
>
>
> --- On Fri, 18/3/11, Neal Campbell (K3NC)  wrote:
>
>
> From: Neal Campbell (K3NC) 
> Subject: Re: [Flexradio] Asus
> To: "paim" , flexradio@flex-radio.biz
> Date: Friday, 18 March, 2011, 12:36
>
>
> Elan
>
> I would look for the Asrock board over any of these. See if you can get
> this in your area:
> http://www.asrock.com/mb/overview.asp?Model=X58%20Extreme3
>
> 73
> Neal
>
> -Original Message- From: paim
> Sent: Friday, March 18, 2011 8:32 AM
> To: flexradio@flex-radio.biz
> Subject: [Flexradio] Asus
>
> is any one can tell me what is better to go
>
> ASUS P6T-SE 1333Mhz S/L 6400MT/S & Intel X58 Chipset
> 3 Way SLI With 3 x PCI-E & 24GB RAM Support
>
> I7 - ASUS1366 P6T6WS REVOLUTION 6400MT
>
>
> ASUS P6T-SE 1333Mhz S/L 6400MT/S & Intel X58 Chipset
> 3 Way SLI With 3 x PCI-E & 24GB RAM Support
>
> what is the better to go for and are this one have on the board fire wire ?
> many thanks
>
> or
>
>
>
> E.P
>
>
>
>
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Re: [Flexradio] Noise Blanker Question

[Robert McGwier]

The noiseblanker 1 and noise blanker 2 are also undergoing reconstruction.
 Everything is being reworked and fine tuned for better performance.

Stay tuned.

Bob


On Thu, Mar 17, 2011 at 5:21 PM, Ted Trostle  wrote:

> Very good. I am happy to understand this. Thank you.
>
>
>
> On Thu, Mar 17, 2011 at 1:41 PM, Robert McGwier wrote:
>
>> It is under active work now to make it all it can be.  NR and ANF both.
>>  We fixed an ugly bug that repaired things some of the way.  We are looking
>> at it all now.
>>
>> Bob
>>
>>
>> On Thu, Mar 17, 2011 at 11:10 AM, Ted Trostle wrote:
>>
>>>  During the brief time I owned a Flex 1500, I recall the NB/NB2 was much
>>> better under PSDR 1.0.16 than my current Flex 3000 under PSDR 1.0.19 or
>>> now
>>> 2.0.20 RC2.
>>>
>>> While I have the 3000 NR running really great by reducing the NR "Delay"
>>> to
>>> abt 15, the NB or NB2 seems not much help, I wondering about the
>>> followingand if you feel I slipped off the edge that is OK...so here
>>> goes my question...and Yes I changed the NB settings following the
>>> Install
>>> notes for 1.0.19 RC1 and 2.0.20 RC2...
>>>
>>> Could the Flex 1500 default database be imported into the 3000 or could
>>> the
>>> 3000 default database NB/NB2 info be modified to what the 1500 NB/NB2
>>> info
>>> is.
>>>
>>> The database is an XML file which is editable, I think.
>>>
>>> Ted, WB2LOU
>>>
>>> --
>>> You cannot change history, but you can make history!
>>> Education is the only legal cure for stupidity.
>>> ___
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>>> http://www.flexradio.com/
>>>
>>
>>
>
>
> --
> You cannot change history, but you can make history!
> Education is the only legal cure for stupidity.
>
>
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Re: [Flexradio] Noise Blanker Question

[Robert McGwier]

It is under active work now to make it all it can be.  NR and ANF both.  We
fixed an ugly bug that repaired things some of the way.  We are looking at
it all now.

Bob


On Thu, Mar 17, 2011 at 11:10 AM, Ted Trostle  wrote:

> During the brief time I owned a Flex 1500, I recall the NB/NB2 was much
> better under PSDR 1.0.16 than my current Flex 3000 under PSDR 1.0.19 or now
> 2.0.20 RC2.
>
> While I have the 3000 NR running really great by reducing the NR "Delay" to
> abt 15, the NB or NB2 seems not much help, I wondering about the
> followingand if you feel I slipped off the edge that is OK...so here
> goes my question...and Yes I changed the NB settings following the Install
> notes for 1.0.19 RC1 and 2.0.20 RC2...
>
> Could the Flex 1500 default database be imported into the 3000 or could the
> 3000 default database NB/NB2 info be modified to what the 1500 NB/NB2 info
> is.
>
> The database is an XML file which is editable, I think.
>
> Ted, WB2LOU
>
> --
> You cannot change history, but you can make history!
> Education is the only legal cure for stupidity.
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Re: [Flexradio] SDR Article

[Robert McGwier]

Color me a bad boy.  I resemble that remark.

On Thu, Mar 17, 2011 at 10:22 AM, Mike Ellerson  wrote:

> Here is a short article I put together about SDR radio. Its called Blackbox
> Station Operators the “Bad Boys” of Amateur Radio?  Yes its Flex related :)
>
> Its at www.hamradioscience.com.
>
> Enjoy!
>
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Re: [Flexradio] Help Noise Blanker

[Robert McGwier]

As an interim I am going to implement a ramp down and ramp up on the gate  
which will limit the key click to a bandwidth NO LARGER THAN the filter  
currently selected.   I should have done this ages ago.  This will be what  
everyone has mistakenly called operating behind a roofing filter for the  
blanker.


Bob


Sent via DROID on Verizon Wireless

-Original message-
From: Tim Ellison 
To: Leo Hoffmann , "flexradio@flex-radio.biz"  


Sent: Thu, Nov 18, 2010 13:57:02 GMT+00:00
Subject: Re: [Flexradio] Help Noise Blanker

It is a known issue with the current operation of the NBs.  What you are  
hearing is a consequence of the NB algorithm currently used in PowerSDR and  
is not related to the AGC, but the gating on/off of the receiver (which is  
sampling much larger bandwidth based on the sampling rate) which is mixing  
strong signals into the RX passband.


There are better ways to implement the NBs, such as pulse noise subtraction  
that are on the DSP drawing board.


-Tim


-Original Message-
From: flexradio-boun...@flex-radio.biz  
[mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Leo Hoffmann

Sent: Wednesday, November 17, 2010 4:17 PM
To: flexradio@flex-radio.biz
Subject: [Flexradio] Help Noise Blanker



When I turn on the Noise Blanker  while listening to a QSO I can hear  
another station up to 15kc away. It's more of a pumping sound vs. actual  
conversation. The NB default is 20 and I have tried going up and down to no  
avail. Also tried different settings of AGC. 


I can have the NR on or off  and the problem still is there.





Using Beta 2.0.16

Vista 64. duel core. i7 Intel processor



I didn't have this problem prior to the Bata change...

Your help would be appreciated ..wb0yol..Leo









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[Flexradio] New hardware from Flex

[Robert McGwier]

 Flex Radio has delivered to me the ultimate in wideband, A/D based receiver
in a product called SERX (for Survey Engine Receiver). Initially delivered
with the ability to stream 30 MHz of data via PCIe (4 lane) or power spectra
and up to 16 channels of variable bandwidth digital downconverter receivers,
at ORNL we are modifying the code to use polyphase filter bank design done
by fred harris and I to do channelize the entire instantaneous bandwidth (0
MHz to well above 6 meters) into 11520 channels with the ability to
reassemble (perfect reconstruction) into larger bands. This is so exciting.
 The device driver works on latest versions of Fedora and Ubuntu,  WINDOWS
NEED NOT APPLY. ;-)


Bob McGwier
N4HY
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[Flexradio] Dayton SDR Forum speaker list, times

[Robert McGwier]

Dayton SDR Forum is exciting this year.  4/5 of the talks are about
HPSDR-related and that is good with a great list of speakers.

Friday, 2:30-5 PM

Gerald Youngblood, Flex updates 2:30
Lyle Johnson, Embedded Processors for SDR 3:00
John Melton,  SDR GUI 3:30
Scott Cowling, HPSDR update 4:00
Jeremy McDermond, MacHPSDR 4:30

Bob McGwier
N4HY
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Re: [Flexradio] A Most Excellent Radio

[Robert McGwier]

Tim is being kind.  I totally screwed them up in 1.18 but we are hard over
on getting PSDR version 2.0 out the door and supporting multiple pieces of
hardware simultaneously and ..

Thanks for your input!

Bob


On Thu, Apr 29, 2010 at 3:36 PM, Tim Ellison  wrote:

> Welcome to the club, Hunter.
>
> If you are using PowerSDR v1.18.x, I am afraid that the default settings
> for ANF are about as good as it is going to get.  Both NR and ANF have been
> significantly improved in the next major version of PowerSDR v2.0.0 due to
> be out relatively soon (when the FLEX-1500 is released into the wild).
>
> The v1.18.x defaults for ANF are taps:65/delay:50/gain:30
>
> On the "spur" issue, toggle the Spur Reduction (SR button) on and off.  If
> the spur moves, it is a DDS spur and all you can do is move it out of the RX
> passband.  If it doesn't move, then it's source is external of the radio.
>  What is the signal strength of it?
>
>
>
> -Tim
>
> -Original Message-
> From: flexradio-boun...@flex-radio.biz [mailto:
> flexradio-boun...@flex-radio.biz] On Behalf Of Hunter Ellington
> Sent: Thursday, April 29, 2010 3:13 PM
> To: flexradio@flex-radio.biz
> Subject: [Flexradio] A Most Excellent Radio
>
> Well, I finally was able to devote a weekend to troubleshooting my HP
> Pavilion computer in conjunction to my 5000A.  I followed all of the trouble
> shooting hints.  I went to Device Manager (in Win 7), updated everything
> that had a driver and disabled a few non-essential functions.  I don't know
> exactly what I did, but the radio is now fully functional.  Way cool!  Now
> to dig into the beast.  Can anyone share with me their notch filter
> settings?  I have goofed around with the settings, but have not stumbled on
> to a tastefully fast and effective setting.  Also, I noticed that I have a
> birdie right on 14.300MHZ which is very low level, but annoying none the
> less.  I don't hear it on the K3, and have gone about turning other rigs and
> peripheral accessories on and off to see if it goes away.  So far, no joy.
>  I love the click and pounce tuning feature.  I do, however need a better
> mouse with a bigger finger wheel.  73
>
>
>  WB9NJB R. Hunter Ellington
> 303-454-0543/720-560-8139
> P.O. Box 44
> Larkspur, CO 80118
>
>
>
>
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[Flexradio] Dayton SDR forum speakers sought

[Robert McGwier]

On Friday, May 14,  I am the moderator (and speaker) at the SDR forum at the
2:30 PM - 5 PM session.  I have two speakers (Scotty on openhpsdr, and I
speak on general SDR topics).

I need to fill out this time and this leaves at least 1.5 hours to fill.  I
would like to get this settled as soon as possible.

Let me know if you are interested in making a presentation.

Also, FYI, I will be the AMSAT/TAPR banquet speaker on Friday night.  In
addition to my forum, SDR, paper delivery with Joel Harrison, work in Flex
booth, etc.  this will be one of the busiest Dayton's for me in years.

I look forward to seeing many of you.


Bob McGwier
N4HY
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Re: [Flexradio] OK now PSK31 weirdness

[Robert McGwier]

I have no trouble at all with telephone numbers.  I tell my cell phone "call
home", etc.  I never forget a number

HI

On Tue, Mar 30, 2010 at 11:31 PM, Neal Campbell  wrote:

> I can't keep my own phone number straight much less the versions!
>
> Sri!
> Neal Campbell
> Abroham Neal Software
> www.abrohamnealsoftware.com
> (540) 645 5394 NEW PHONE NUMBER
>
> Amateur Radio: K3NC
> Blog: http://www.abrohamnealsoftware.com/blog/
> DXBase bug reports: email to ca...@dxbase.fogbugz.com
> Abroham Neal forums: http:/www.abrohamnealsoftware.com/community/
>
>
>
>
>
> On Tue, Mar 30, 2010 at 11:28 PM, Tim Ellison  wrote:
>
> > "Doesn't 1.8.5 self-set itself to the driver setting anyway?"
> >
> > No.  The SVN PB-PAL version of PowerSDR (v1.19.3) does.   It needed PAL
> to
> > set the SR hardware from PowerSDR.
> >
> >
> >
> > -Tim
> >
> > -Original Message-
> > From: flexradio-boun...@flex-radio.biz [mailto:
> > flexradio-boun...@flex-radio.biz] On Behalf Of Neal Campbell
> > Sent: Tuesday, March 30, 2010 10:49 PM
> > To: Lee - AA5J
> > Cc: flexradio@flex-radio.biz
> > Subject: Re: [Flexradio] OK now PSK31 weirdness
> >
> > I don't know if he is talking about the parameters in the DSP panel or in
> > the VAC panel (the figures are what I use in the VAC panel).
> >
> > Doesn't 1.8.5 self-set itself to the driver setting anyway?
> >
> > 73
> > Neal Campbell
> > Abroham Neal Software
> > www.abrohamnealsoftware.com
> > (540) 645 5394 NEW PHONE NUMBER
> >
> > Amateur Radio: K3NC
> > Blog: http://www.abrohamnealsoftware.com/blog/
> > DXBase bug reports: email to ca...@dxbase.fogbugz.com Abroham Neal
> forums:
> > http:/www.abrohamnealsoftware.com/community/
> >
> >
> >
> >
> >
> > On Tue, Mar 30, 2010 at 10:45 PM, Lee - AA5J 
> wrote:
> >
> > > Uh,
> > >
> > > Firewire Sample Rate 96kHz
> > >
> > > but
> > >
> > > Powersdr Sample Rate 48000
> > >
> > >
> > >
> > >
> > > On 3/27/2010 7:57 PM, Drax Felton wrote:
> > >
> > >> I followed the recommended setup for digital modes from this document:
> > >>
> > >> http://kc.flex-radio.com/KnowledgebaseArticle50363.aspx?Keywords=digi
> > >> tal+mod
> > >> es
> > >>
> > >> The Firewire driver is set to:
> > >> Buffer Size 1024
> > >> Sample Rate 96kHz
> > >>
> > >> VAC is set to these for both cables:
> > >> SR 11025..96000
> > >> BPS 8 to 16
> > >> NC 1..2
> > >> Max inst 20
> > >> MS per int 5
> > >> Stream fmt  Cable Range
> > >> Volume Control: off
> > >> Clock corr% 100.0
> > >>
> > >> Setup in PowerSDR is:
> > >> Buffer Size 1024
> > >> Sample Rate 48000
> > >> Latency 120
> > >> I have to run the RX Gain at -40 to keep DM780 from complaining about
> > >> overload.
> > >> And HRD still reports Audio 25% to 40% and sometimes jumping to 100%
> > >>
> > >>
> > >>
> > >> -Original Message-
> > >> From: Dave Beumer WØDHB [mailto:d...@w0dhb.net]
> > >> Sent: Saturday, March 27, 2010 6:46 PM
> > >> To: 'Drax Felton'; flexradio@flex-radio.biz
> > >> Subject: RE: [Flexradio] OK now PSK31 weirdness
> > >>
> > >> Drax
> > >>
> > >> Does this clear up if you toggle the PowerSDR start button ?
> > >>
> > >> What sample rate,buffer size and mode is the firewire driver set to ?
> > >> Does the sample rate set in PowerSDR match the Driver sample rate ?
> > >>
> > >> Dave
> > >>
> > >> -Original Message-
> > >> From: flexradio-boun...@flex-radio.biz
> > >> [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Drax Felton
> > >> Sent: Saturday, March 27, 2010 3:48 PM
> > >> To: flexradio@flex-radio.biz
> > >> Subject: Re: [Flexradio] OK now PSK31 weirdness
> > >>
> > >>
> > >> It looks like it has a lot of extra traces in it.  When I click on
> > >> them I cannot decode anything.
> > >> http://www.myresourcegroup.com/DM780-Screenshot-2010-03-27-174130.JPG
> > >>
> > >>
> > >> The DM780 Audio % at the bottom of the screen keeps bouncing from 40%
> > >> to 100% occasionally saying "Overload" and I already have the maximum
> > >> VAC, RX Gain at -40.  Could this be the issue?
> > >>
> > >>
> > >>
> > >> ___
> > >> FlexRadio Systems Mailing List
> > >> FlexRadio@flex-radio.biz
> > >> http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
> > >> Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/
> > >> Knowledge Base: http://kc.flex-radio.com/  Homepage:
> > >> http://www.flex-radio.com/
> > >>
> > >>
> > >>
> > >>
> > > Uh,
> > >
> > >
> > > ___
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> > Archives: http:

[Flexradio] Frank Brickle, AB2KT, XYL ... SK

[Robert McGwier]

I am sorry to report that Frank's wife has passed away following a long
period of suffering from a serious accidental head injury.

I know you will join me in sending Frank our sincerest condolences.  I have
been in contact with Frank and I will post notices here of details once they
are finalized for funeral and other info that may be pertinent.

Sandy Leiblum was an internationally known psychologist.

http://www.sandraleiblum.com/

Sandy leaves many friends, students, patients, and colleagues in mourning.


I understand there will be a memorial service in Princeton, details to
follow.

Bob McGwier
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Re: [Flexradio] Life expectancy of the relays in the 5K?

[Robert McGwier]

If you are like me, you are going to spend all of your kids and grandkids
inheritance given the RIDICULOUS state of the health care for the elderly in
the US so you might want it to be the centerpiece of your estate (where it
belongs).

;-).

Bob
N4HY


On Thu, Jun 18, 2009 at 12:20 PM, Burt  wrote:

>
> But if I donate my Flex to my daughter when I die, and she has children and
> they became hams will they still be able to use the relay?
> Burt
>
> --- On Thu, 6/18/09, Gerald Youngblood  wrote:
>
> > From: Gerald Youngblood 
> > Subject: Re: [Flexradio] Life expectancy of the relays in the 5K?
> > To: flexradio@flex-radio.biz
> > Date: Thursday, June 18, 2009, 11:08 AM
> > One other comment on this subject,
> > the manufacturer's ratings are based on
> > "hot switching" at the rated current.  We cold switch
> > all relays so this
> > increases the effective lifetime even more.
> >
>
>
>
>
>
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Re: [Flexradio] Flex5KA, MixW and HRD - PTT Help

[Robert McGwier]

I want to disagree with in this rare instance.  THE ONLY CODE THAT IS NOT
BETA IS THE FULL RELEASE WITH AN INSTALLER ON THE WEB SITE.  Any and all
other code should be considered Beta or Alpha.  The trunk is the ONLY Beta
code.  The branches are all ALPHA code.  Only Eric is in charge of moving
code from Alpha (branches) to Beta (trunk) before deciding to include in a
release and again, Eric is completely in charge of that process.

Bob


On Thu, Jun 18, 2009 at 7:21 AM, Tim Ellison  wrote:

>  "They said they would fix it 2 weeks ago in a non beta version, but have
> not."
>
> This is not true.  There has been a fix in the maintenance code (SVN TRUNK)
> for over two months.  The TRUNK is NEVER beta software.  It is the last
> production release, in this case v1.18.0 with only BUG fixes.  It will be
> the exact same code that is released as v1.18.1 later this week or early
> next week.  Only the SVN "branches" are beta or experimental versions of
> PowerSDR.  See the following KC article for the details.
> http://kc.flex-radio.com/KnowledgebaseArticle50243.aspx
>
> -Tim
>
> -Original Message-
> From: flexradio-boun...@flex-radio.biz [mailto:
> flexradio-boun...@flex-radio.biz] On Behalf Of Burt
> Sent: Thursday, June 18, 2009 6:50 AM
> To: Tom O'Boyle
> Cc: flexradio@flex-radio.biz
> Subject: Re: [Flexradio] Flex5KA, MixW and HRD - PTT Help
>
>
>
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Re: [Flexradio] All using SVN 3166 or higher

[Robert McGwier]

I had to be persuaded but I believe it will benefit all of us.  The use of
the test branch by people running contests and hunting vital DX or worse
yet,  doing ARES work just sent shivers down my spine.  It is time for a
fork in the road.  One for those who like to tinker and/or have specific
tasks to accomplish for the overall program and another (this one here) for
those who like to just use and get help in set up without any barriers to
moving back and forth other than the (ENFORCED) etiquette of what may be
discussed and where.

Bob
N4HY

On Wed, Jun 17, 2009 at 8:08 PM, Joe Roth-WC4R  wrote:

> Excellent point Bob.
> A consideration could be made for a separate tester/coder email reflector.
> Joe
>
>
>
>
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Re: [Flexradio] Amp Keying and chopped key elements

[Robert McGwier]

Hi Carl:

There are settings that need to be changed and also there is recent work.  I
suggest you and all other CW ops go ahead and download the trunk using
tortoise svn.  you do not need the entire trunk,  just the bin/Release
directory.

Several updates are in there but they include:

1) Major bug in the cw keying timer is fixed.
2) ALC is completely refactored
3) order of ALC, Compandor, Compressor are changed to one that makes for
much better performance.

This will be included in the release this week or next but you can go ahead
and get this down now.

Bob


On Thu, Jun 4, 2009 at 2:42 PM, N4PY2  wrote:

> I am using an Acom 1000 with my F5K.  I am keying the amp with Am Key TX1.
> In order to not get an arc fault on the amp, I have to set the the delay for
> TX1 to about 100 msec.  I am also running break in CW with the break in
> delay set at 75 msec.  When I listen to my signal on another receiver, the
> dah elements are coming out as dits and the dit elements are not there at
> all.  I am keying the radio with an external keyer at only 20 wpm.  The only
> solution I see at the moment is to key PTT and send manual CW.
>
> My keyer is a winkey keyer and I know I can use the PTT line and set a PTT
> lead time to fix this with the keyer, but does anyone know of another
> solution.  It seems CW keying is a very weak point on the F5K.
>
>
> Carl Moreschi N4PY
> 121 Little Bell Drive
> Bell Mountain
> Hays, NC 28635
>
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[Flexradio] WBIR, wideband image rejection

[Robert McGwier]

I have been asked what this is over and over.  I will let someone with a
better voice tell you:

http://w9oy-sdr.blogspot.com/2009/05/wbir.html
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Re: [Flexradio] Diverse Betty

[Robert McGwier]

All of Lee's experiments (w9oy blog for details) were done with modest
antennas.

Bob


On Mon, May 18, 2009 at 10:52 PM, Edwin Marzan wrote:

>
> Sounds like a fantastic thing. Unfortunately some of us are unable to set
> up 1500 ft beverage antennas or whatever else is needed to accomplish this.
>
>
>
> A couple of verticals, maybe
>
> Edwin Marzan AB2VW
>
>
>
>
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[Flexradio] SDR Forum at Dayton

[Robert McGwier]

Room 5,  Friday PM

http://www.hamvention.org/files/2009Forums-Friday.pdf


See you there.

Bob
N4HY

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Re: [Flexradio] PowerSDR S-Meter Power Readings

[Robert McGwier]

Since the very first C language version of the sdr,  we integrated the
received power in the filter (by summing the bins of the filter and
relying on parseval's relation).  This is indeed in do_rx_meter in
sdr.c   The thing to be aware of is that do_rx_meter is used for all
metering in the receiver and it operates in many different states.

A few more minutes of looking and this would have all been trivially obvious.

Tune to a place with no signal and have a (say) 500 Hz filter
selected.  The S meter will read above the noise floor in the power
spectrum and the wider you make the filter, the more it goes up.  This
is exactly because it is the integrated power that passes through the
filter and exactly how it should operate.

Bob



On Mon, Apr 13, 2009 at 1:34 PM, Eric Wachsmann  wrote:
> Actually, it will.  There is an option for this in the Setup Form -> Display
> Tab called "Show Decimal".
>
>
> Eric
>
> On Mon, Apr 13, 2009 at 10:59 AM, Brian Lloyd 
> wrote:
>>
>> On Mon, Apr 13, 2009 at 5:29 AM, Bob McGwier  wrote:
>> > You are not reading this correctly.
>> >
>> > The power displayed on the meter is integrated power in the receive
>> > filter,
>> > just as it should be.  The computation is accurate to much more than 0.1
>> > dB
>> > irrespective of what the display is doing.  But as in all cases of such
>> > compromises,  it is designed to work for the use case of 99.9% of
>> > amateurs
>> > (and others) and that is to measure the strength of the signals that are
>> > well above the noise floor.  That is how it is calibrated.
>> >
>> > I do not believe your 1-2 dB number and will not without demonstration.
>> > You provide proof,  I will believe and see what we can do.
>>
>> Michael's (KI6QOC) science fair project supports your statement. His
>> science fair experiment comparing antennas using the two receivers in
>> the F5K was within a few tenths of a dB of the theoretical after
>> averaging many samples. I only wish the S-meter read out in tenths of
>> a dB. It would have made his project easier.
>>
>> 73 de Brian, WB6RQN/J79BPL
>>
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>
>

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[Flexradio] Dayton SDR Forum so far

[Robert McGwier]

On May 16 2008 at the ARRL National Convention and the Dayton
Hamvention we will have a software defined radio forum aimed at
amateur radio operators.

SO FAR:

Bob McGwier, N4HY   SDR update (< 15 minutes)
Scott Cowling WA2DFI on HPSDR Project update (20 minutes)
Frank Brickle, AB2KT, on VR and DttSP (20 minutes)
Michelle Thompson, W5NYV on Microwave Engineering Project
(http://bit.ly/G3nW) (20 minutes)
Gerald Youngblood on the new Flex offerings
(http://www.flex-radio.com/)  (20 minutes)

We have room FOR TWO MORE TALKS AND THAT IS IT.  That will not count
the fun we will have  harassing Dave Toth relentlessly in the halls
before and after!  COME ONE COME ALL.

The AMSAT and TAPR dinner will be that night.

Richard Garriott, an amateur radio operator,  computer game author,
son of astronaut Owen Garriott and recent returnee from the space
station where he was a space tourist will be the banquet speaker at
the TAPR and AMSAT dinner!  TAPR and AMSAT officially sponsor HPSDR.

http://www.amsat.org/amsat-new/index.php

Bob McGwier
ARS N4HY

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[Flexradio] SDR Forum at Dayton Hamvention

[Robert McGwier]

The SDR Forum at the Dayton Hamvention is Saturday 11:15 AM to 1:30 PM May  16.

This is the ARRL National convention as well so it should be well attended.

Because of missed emails, etc. (I was left off the email addressees so
I got none of the emails) we are now in a rush.  The initial list,
etc. is supposed to be in DARA hands by April 1.  This needs to be
dealt with ASAP.  I will contact some "you should" directly but I am
soliciting 15-20 minute talks.

I need at least an indiciation of willingness to speak, a few sentence
abstract, and your willingness to be flexible in the timing as Irush
this together.

Thanks
Bob McGwier
ARS N4HY

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Re: [Flexradio] HD radio

[Robert McGwier]

As soon as you or someone else tells us the proprietary information in
the HD encoding and then pays for our attorneys and court costs in
fighting off the industry as they sue us.

In other words, probably not.

Bob


2009/3/25 Jerry Harley :
> Are we going to be able to listen to HD radio on our Flex in the future?
>
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[Flexradio] Software Defined Radio software authors are hard at work

[Robert McGwier]

http://www.youtube.com/watch?v=v4Wy7gRGgeA

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Re: [Flexradio] [SPAM] Re: FLEX-3000 OOB blog

[Robert McGwier]

The major technological win,  the truly fantastic innovation which
came from me working with a genius (fred harris) needs publication
approval from my masters (U.S. government).  This does not mean we
need to stop rolling this out.  It means that it will not be in its
final form when it first rolls out.

Bob


On Thu, Mar 19, 2009 at 2:56 PM, Robert McGwier  wrote:
> The question is ill posed I think.  Do you mean how mt any IF paths are
> available simultaneous for (say) the receiver?  Let me do some
> guessing and then answer my guesses.  Please correct my incorrect
> guesses.
>
> 5000: two up to 192 kHz wide each for RX and one for TX.
> 3000: one up to 96 kHz wide on TX and RX with duplex.
> 1500: one up to 48 kHz wide, no duplex
>
> In each of these IF paths,  the only limitation on exposing software
> receivers or transmitter is the commands to the underlying code which
> is undergoing MAJOR reconstruction.
>
> Right now I am putting together perfect reconstruction filterbanks
> specifically designed optimally for each of these speeds in DttSP 3.0
> and PowerSDR.   My current design done with fred harris and using no
> new technology will have  N channels if N is the number of kHz.  In
> each of these N channels I can run multiple software receivers.  I can
> synthesize them (through the perfect reconstruction) into M kHz wide
> channels from the 1 kHz wide channels and then run as many software
> receivers on that as you can stomach.
>
> The number of possibilities is going to be so large that I have no
> idea how to tell you how to deal with it.  I will leave that up to the
> brilliant GUI folks like you to expose.
>
> Bob
>
>
> On Thu, Mar 19, 2009 at 2:48 PM, Simon (HB9DRV)  wrote:
>> What's N for the various Flex radios? (Gremlins ate the formatting in my
>> previous post.)
>>
>> Simon Brown, HB9DRV
>> www.ham-radio-deluxe.com
>>
>> - Original Message - From: Lux, James P
>>
>> The conceptual model is like you have N tunable block converters...
>>
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>

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Re: [Flexradio] [SPAM] Re: FLEX-3000 OOB blog

[Robert McGwier]

The question is ill posed I think.  Do you mean how many IF paths are
available simultaneous for (say) the receiver?  Let me do some
guessing and then answer my guesses.  Please correct my incorrect
guesses.

5000: two up to 192 kHz wide each for RX and one for TX.
3000: one up to 96 kHz wide on TX and RX with duplex.
1500: one up to 48 kHz wide, no duplex

In each of these IF paths,  the only limitation on exposing software
receivers or transmitter is the commands to the underlying code which
is undergoing MAJOR reconstruction.

Right now I am putting together perfect reconstruction filterbanks
specifically designed optimally for each of these speeds in DttSP 3.0
and PowerSDR.   My current design done with fred harris and using no
new technology will have  N channels if N is the number of kHz.  In
each of these N channels I can run multiple software receivers.  I can
synthesize them (through the perfect reconstruction) into M kHz wide
channels from the 1 kHz wide channels and then run as many software
receivers on that as you can stomach.

The number of possibilities is going to be so large that I have no
idea how to tell you how to deal with it.  I will leave that up to the
brilliant GUI folks like you to expose.

Bob


On Thu, Mar 19, 2009 at 2:48 PM, Simon (HB9DRV)  wrote:
> What's N for the various Flex radios? (Gremlins ate the formatting in my
> previous post.)
>
> Simon Brown, HB9DRV
> www.ham-radio-deluxe.com
>
> - Original Message - From: Lux, James P
>
> The conceptual model is like you have N tunable block converters...
>
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Re: [Flexradio] Upgrades and bug fixes to test

[Robert McGwier]

Duffy:

Thanks.  This is the kind of report I am looking for.  Where you state
your results,  the impacts, the equipment used and it has a story so I
can get the context because I am so thickheaded.

Thanks!

Bob


On Wed, Mar 18, 2009 at 1:28 PM, Duffy  wrote:
> Bob
>   Thanks for the new code. My HF noise aboard a boat is atrocious on
> some bands. The sonars harmonic pulses are gross on 75M and the NB will
> take it out but high level SSB nearby distorted the audio I would be
> listening to greatly before. Tried your new test code last night and the
> distortion looks to be gone or very little at first glance and the sonar
> pules gone with NB on, wonderful. The ANF seems better and slowly ramps
> in notch if tone is low level. NR has not really worked for me for a
> long time and now seems to work, although I need to play with controls
> to be able to copy weaker signals with NR on.
>
>

>
> New PC = Atom 330 w/2Gig ram and WD 500 Gig HD , OS= WinXP pro upgraded
> to SP3, Trendnet 3 port firewire card all in mini atx case w/250 Watt
> supply.external usb dvd drive ( hope to mount a mercury/ozy 2 plug mini
> atlas in dvd case space )
> Flex 5000A w 2nd receiver and ATU
>
> Again thanks for all your great work and ideas..  Duffy  NA6MM/4
> marine mobile Mississippi  (pics at www.thaisuites.com )
>
>
>
>

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[Flexradio] IQTest code

[Robert McGwier]

I want to prepare this group for some testing that needs to be done.

I have an approach in mind that will let us roll out RX adaptive IQ
immediately.  It works as follows and the work is done in the TX IQ
cal to make it happen.

1) TX IQ calibration session is initiated.
2) DDS Generator is turned on *
3) RX IQ is adapted.  Takes 100 ms.*
4) RX IQ adaptation is turned OFF (not correction, adaptation)*
5) TX IQ runs as before.
6) TX IQ numbers stored
7) RX IQ adaptation enabled *

* == new step

If anyone sees a problem with this say so as that will prevent a few
hours work to make this happen.  Hearing none, I will proceed and ask
you to test later.

I want to roll this RX IQ stuff out but NOT break what we have.

Bob

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[Flexradio] Behrouz Farhang-Bourjeny and his book

[Robert McGwier]

Behrouz has improved his booked with editing and errata repair and
having the material tried out on students.

I used the book in a class in an early form, at work, and I am very
happy to report that Behrouz continues to improve on the work.

It does not yet have the OFDM chapter in it.  I need to send Behrouz
my comments on it but at this time as do others who have received the
chapter, but at $16 for the pdf,  it is a must have in its current
form.  I am honored he recognized the feedback I gave him from the
classes Frank Brickle and I taught together and the use I have been
making of it at the University of Maryland.

Again, I am very happy to recommend this book in its updated form:

http://www.lulu.com/content/1620824

Bob McGwier

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Re: [Flexradio] [dttsp-linux] Intel ATOM WHOOAAAAA Nellie

[Robert McGwier]

http://www.nvidia.com/object/sff_ion.html

I think it is pretty clear that almost anyone with any real experience
would take Nvidia's restricted distribution graphics drivers about 100
to 1 over the open source CRAP that comes from ATI, and forget
completely any of their competitors.  I have removed from service
every single ATI device which I am able to remove in the last few
months because of the utter horror of their driver support.

I have yet to have a single Nvidia restricted driver download fail once.

BEWARE:  YMMV.

I attempted to make the point and Frank made it much more clearly.  If
you need Firewire,  the ATOM D945GCLFx  family (intel motherboard) is
required to get the PCI slot.  I am very happy with mine.  I use it
all the time.  There is nothing wrong with it.  Like all things,
better things come along rapidly these days.  What I am personally
happy about is how cheap these offerings have been.  I have NO IDEA
what the price point will be on the Nvidia ION.

I think the marketing hype video on the nvidia web page, showing the
joint impact of the 2 GB of DDR3 and the Nvidia GeoForce 9300, is
about right on target.

In addition, the specs show that GigE is supported.  I am expecting
excellent performance because of the clear concentration of IO support
in this box.  The small footprint desktops have nearly 100% of the
usable back covered with IO connectors.  That bare space is not really
bare.  You need it to get your fingers in on the connectors!


Bob


On Fri, Feb 20, 2009 at 12:36 AM, Frank Brickle  wrote:
> On Thu, Feb 19, 2009 at 11:17 PM, Bob McGwier  wrote:
>
> ...HOWEVER, for those folks who want to build an small board computer for
>> supporting the Flex family of firewire devices,  the Intel motherboards
>> are your only choice.  You need the PCI slot to get the firewire support...
>
>
> For DttSP apps it's not a real choice. You will need a PCI slot, either for
> FireWire audio like the Edirol FA-66 or the PreSonus FireBox, or merely for
> some other halfway decent soundcard like the M-Audio Delta 44. This is a
> required configuration for effectively using sdr-shell, sdr-core, and the
> sdrTEC board, for example. A reference Linux implementation for this
> combination, with a cost of around $800US total for the RF front end +
> computer, is about ready to go up on CGRAN.
>
> The FireWire+Flex option is moot for dttsp-linux and vrk, but the other
> FireWire/PCI addons are critical. DttSP apps using the USRP1+GNU Radio are
> fine. USRP2 is an open question, for now.
>
> Short form: for dttsp-linux and general RF hardware, the Atom 330 is
> unquestionably the more utilitarian alternative. This is especially so when,
> given Nvidia's history regarding Open drivers, Linux support for ION is very
> uncertain in the near term (6-9 months).
>
> 73
> Frank
> AB2KT
>
> --
> Some people are like slinkies...not really good for anything, but they still
> bring a smile to your face when you push them down a flight of stairs. --
> Anon.
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Re: [Flexradio] Acorn-sdr

[Robert McGwier]

Bob:

Thank you very much for this.  I am sure many will find it useful and
illuminating.

Bob
N4HY



On Thu, Jan 22, 2009 at 2:04 PM, Bob Cowdery  wrote:
> Hi all,
>
> I've put up a new project at http://code.google.com/p/acorn-sdr. It is
> the start of an evolution of both erlink-sr http://www.g3ukb.co.uk and
> pylink-sr http://code.google.com/p/pylink-sr. This is a software bus
> with a reference implementation of a set of nodes. I will be moving this
> forward as time allows with some heavyweight nodes. As always I hope
> someone finds something of interest there. The info is minimal at the
> moment but hopefully sufficient.
>
> 73
> Bob
> G3UKB
>
>
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[Flexradio] OFF TOPIC RANT

[Robert McGwier]

http://n4hy.blogspot.com/

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Re: [Flexradio] [hpsdr] [Discuss-gnuradio] Intel Atom is NICE.

[Robert McGwier]

The new I7 intel processors have a really amazing amount of horsepower
but a tremendous amount of onboard stuff is designed to work
intimately with the peripherals to bring on high speed graphics.  Now
if your argument is that all of this is going to be moved into the
GPP,  I might agree that we will see some of this.  If you are arguing
that the demand for an almost exponential increase in capabilities in
graphics hardware for the purposes of virtual reality and rendering
live and without memorex is not going to be happening, we are in
profound disagreement.

John, can you give me (and the others here) a pointer to the list of
GPIB, etc. devices your fantastic stuff currently supports?  I went
from seeing it in the early days with a handful of things supported to
seeing friends of mine (like W2GPS) running their labs with your code.


Bob


On Mon, Dec 29, 2008 at 8:31 PM, John Miles  wrote:
> Larrabee, I'm thinking, will be the real SDR platform of choice.  A Larrabee
> box with USB 3.0 is going to put a staggering amount of DSP power into
> peoples' hands.  It won't even make sense to mess with FPGAs at that point,
> I hope.
>
> GPUs are unquestionably an interim hack; I don't think they'll live to see
> the next decade.  They'll go the way of the Weitek.
>
> -- john, KE5FX
>
>> -Original Message-
>> From: hpsdr-boun...@lists.hpsdr.org
>> [mailto:hpsdr-boun...@lists.hpsdr.org]on Behalf Of Bob McGwier
>> Sent: Monday, December 29, 2008 4:40 PM
>> To: 'Newman, Timothy'; 'Marcus D. Leech'
>> Cc: hp...@lists.hpsdr.org; FlexRadio@flex-radio.biz;
>> q...@yahoogroups.com; tim.newman...@gmail.com; discuss-gnura...@gnu.org
>> Subject: Re: [hpsdr] [Discuss-gnuradio] Intel Atom is NICE.
>>
>>
>> * High Performance Software Defined Radio Discussion List *
>>
>> And GPU's are going to become commodity priced quickly and
>> possibly even move into the GPP and replace older ways of doing
>> floating point.  With Nvidia CUDA, you can write code for your
>> GPP, call GPU with intrinsics to get pretty quick payback while a
>> better longer term strategy is worked on.
>>
>> The future of really hard to program heterogeneous/not symmetric
>> multiple core processors,  irrespective of how great the
>> bandwidth is,  I don't think is looking all that rosy.  It simply
>> cannot take months and months to get speed to make the processor
>> pay or the cost per flop, when ALL COSTS are amortized (expensive
>> people, etc.) begins to look bad.
>>
>> Bob
>>
>>
>>
>
>

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Re: [Flexradio] Power SDR on Windows XP 64 bit version

[Robert McGwier]

I installed a recent (not the latest) driver on a serious XP 64 bit
machine.  It ran like gangbusters, absolutely seamlessly.   This was
in "Mr. ACOM's" shack and we  banged on it on multiple bands and modes
for hours.   It worked.

Bob


On Thu, Oct 16, 2008 at 2:02 AM,  <[EMAIL PROTECTED]> wrote:
> About a month ago I asked about whether PowerSDR 1.14 would work with Windows 
> XP 64 bit version.  A few of you responded.  Thanks for your responses.  I 
> think some did not pick up that I was referring to XP not Vista.
>
> I installed Power SDR 1.14 on my new Windows XP 64 computer.  PowerSDR 1.14 
> loaded all right, but the driver for the Flex 5000A from the Flex-Radio 
> website did not work.  Fortunately, it did work fine with my old computer 
> which has XP 32 on it.  I still hope that at some point Flex-Radio will put 
> out a 64 bit driver for the Flex 5000A.
>
> Recently I got a new HP TX2500z tablet laptop with Vista 32 on it.  The 
> laptop has 3MB of RAM.  It is straining to handle Vista.  When the TX2500z is 
> opened with the keyboard open the CPU meter keeps hitting 100%, and when it 
> does the display turns upside down.  The hard drive keeps churning even when 
> I am not running any programs.  I am hoping that adding 1 MB of RAM will at 
> least get the display to settle down. I can see now why Vista is so 
> unpopular.  I will keep an extra copy of XP around for any computer I use 
> with PowerSDR.
>
> I ordered the new Flex 3000.  I look forward to using it in portable 
> operations.  I may even be able to give a demonstration at the local radio 
> club.
>
> 73
>
> Sig,  NV7E + ZS6SIG
>

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Re: [Flexradio] Flex 5000

[Robert McGwier]

Yes,  I am beginning to think that is what is happening to me, UAC is
on and I have been reluctant to turn it off.  We really need TC to get
their driver signed!!!

Bob


On Wed, Sep 3, 2008 at 4:16 PM, Ray, K9DUR <[EMAIL PROTECTED]> wrote:
> Tim,
>
> I forgot to mention in my previous response that I have UAC off.
>
> 73, Ray, K9DUR
>
>
>
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Re: [Flexradio] XP retired?

[Robert McGwier]

http://www.microsoft.com/windows/windows-xp/future.aspx

On Tue, Jul 22, 2008 at 7:43 PM, Jim Jerzycke <[EMAIL PROTECTED]> wrote:
> Newegg still has it in stock.
> 73, Jim  KQ6EA
>
> --- "Michael M. Moore" <[EMAIL PROTECTED]> wrote:
>
>> Was it June 30,2008 that MS "retired" XP from sales?
>>  If so is the full Flex Radio suite now considered
>> Vista compatable/functional?  Hopefully I will be
>> able to spring for a 5000A by Feb.  I passed my
>> element 4 on Sat. And want to play with the big kids
>> now ;-)  I would prfur Linux (SuSE) but know 64 bit
>> multi's are needed for processing, and 32 Bit mode
>> is needed for device drivers and do not want to wait
>> for possible release to play.  I m also cautious of
>> laptops due to h/w limitations.
>> 73 and thanks.
>>
>> Michael M. Moore
>> N5RWH
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Re: [Flexradio] PowerSDR Dual Core Processors

[Robert McGwier]

Eric Wachsmann wrote:
> Larry,
> 
> PowerSDR is a multi-threaded application and thus will automatically take
> minimal advantage of multiple cores.  To give an example, one core could be


MAXIMAL advantage, not minimal.

> used for the display thread, one for the audio thread, another for the user
> interface and another for the DSP.  Beyond that, the returns are going to be
> pretty low since any other threads are pretty low duty.  I think we can
> utilize a quad core effectively with the current code.
> 
> Having said all of that, there are probably areas where this can and will
> improve as things like the audio/FFT libraries become multicore aware.

FFTW is compiled with threads.  We need to compile with OpenMPI and then
compare the different ways/run some tests.  None of this will be
apparent to the end user except they will see the CPU drop.  The biggest
factor in the way of this running on a stinking toy computer, even one
with a PCI slot video card, is the continued use of GDI rather than
accelerated display through OpenGL 2D.  When we do this, at long last,
we will be able to afford MUCH more on the screen.  For those who decide
that Linux is the way for them to go,  compiz and virtualization tools
are going to yield some truly spectacular capabilities.

> 
> 
> Eric Wachsmann
> FlexRadio Systems
> 


73's
Bob
N4HY

-- 
AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
“An optimist may see a light where there is none, but why
must the pessimist always run to blow it out?” Descartes

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Re: [Flexradio] So, the new PowerSDR is moving to Linux?

[Robert McGwier]

[EMAIL PROTECTED] wrote:
>  Hi Gerald,
> 
> Very cool...
> 
> Now that FlexRadio is going main stream, how 'bout a second reflector to
> deal with development/technical issues?  Mebbe even require a non
> disclosure agreement to get on board.   Makes me a bit uncomfortable to
> get into discussion about future issues in on reflector where many of the
> members are primarily interested in technical support type issues.  
> 
> More work of course but maybe worth it?  The forums don't seem to be that
> active.
> 
> vy 73's
> Rob
> AB7CF
> 
> 


I will grant to you that I am not an unbiased observer before I begin
but let me say that there is already back channel and "hh  wow"
secret communications that are done to protect the decision making
process at Flex.  The most refreshing thing about Flex to me is that
except for the TINY amount of back traffic that this represents, is that
much of the development process for the radio, which is mostly done in
the software, is detailed here and everyone gets an input.  I can tell
you that personally,  this has been extremely valuable.

These discussions,  which brought about a small tempest, is not unlike
many that have happened in the four years since the open source work
truly began.  It is my opinion that they are healthy.  Smart guys like
Frank, Eric, and others (but never me, I am always perfect) should never
be allowed to develop alone in the back room without the opportunity to
float their ideas early and often in the view of the end users.  That is
because we like to "drink the koolaid" too much (oops, sorry, I forgot,
I am perfect, I mean they).  What you see here when this happens is that
 the software developers have ideas which run all over the place and
then Gerald says, without fail, "How does this serve our customers and
sell more radios?".   Mostly this is done without recrimination, right
in front of you.  I will say this, and I believe it, until and unless
you point out another example.  You will NEVER be given this much
exposure to the internal dialog that leads to decisions in any other
amateur radio company.  Gerald and Flex are to be commended for this in
my opinion.  For the most part, this has been viewed by most with a
positive attitude.  I can still remember when we had OPEN rebellion
here, the worst I have seen,  when we did away with the daily and/or
weekly distributions on the web site and went to SVN.  People were
hopping mad that they were not going to be given their weekly dose of
"new".  We did not explain ourselves well and of course the end result
is that, unlike ANY other company I can think of,  you are given minute
by minute access to the development.  This can be good or bad.  Good if
you know that the svn page is for developers to "run things up the flag
pole to see who will salute",  and bad if what you are looking for is
stability.  We have been using svn incorrectly.  We are about to remedy
that when the next major release of PowerSDR happens.  The trunk will be
"bug fix only, no new features" and you will get new feature land in
branches.  It will be better for individuals who want to do
experimentation.  Bill Tracey and Bob Tracy have been the only people
who have been really good about this and I followed their example to do
the as yet unfinished port of resampling to Windows of Frank's
resampling version for Linux.

I do beg your indulgence dear fellow Flex customer.  Pray ye,  please
see this in its positive light. For your own good and in your own best
interests,  keep the developers talking in the light.  Nasty dark molds
are given a place to grow when developers are treated like mushrooms,
kept in the dark room, and fed ... well, you know.

Happy New Year.
Bob
N4HY


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Re: [Flexradio] I'm not a programmer

[Robert McGwier]

Gerald Youngblood (FlexRadio Systems) wrote:
> Let me clarify that FlexRadio will not force an OS that is not compatible
> with the bulk of amateur radio software applications.  I am not sure where
> that idea came from.
> Regards,
> Gerald
> 


The goal is to march along with the natural changes that are occurring
even as I am typing.  The things that are changing our computing world
are virtualization and multiple cores increasing in number to a point of
diminishing returns brought on by the increasing likelihood of
contention for memory and hardware required to provide coherence, etc.
It is a dramatic change that has not filtered down to my 73 year old
mother, and just recently to my 20 year old daughter and it has not
filtered down to Firebrick and other users because, so far, they have
seen no need to.  This is not a thing to be feared but to be embraced as
most will come to see.

This is having a dramatic impact all over in development circles.  My
daughter's Mac book is running XP and some of her favorite applications
in a virtual machine.

My 64 bit Linux machine is running Windows XP in a virtual machine.  For
exactly the same reasons as our DX'ing friend FireFox, I need this
windows to work and to work seamlessly.  I use Quicken,  Turbo Tax,
Real Rhapsody as THE three most important applications in my personal
life.  They all use bloody internet explorer to render their content.
There are versions of Rhapsody using flash, etc. that run perfectly well
on Linux but these do not build libraries from bought songs and do not
rip CD's to the Rhapsody library.  Quicken and later Turbo Tax quite
literally remade my life over 20 years ago when I started using Intuit
tools.  I will be loathe to give them up.  I have purchased, absolutely,
my LAST windows only machine because I no longer require it! I am free.
 Vista will never run on a machine I use that I pay for.


73's
Bob
N4HY

-- 
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TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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must the pessimist always run to blow it out?” Descartes

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Re: [Flexradio] Vista Installation Oddities

[Robert McGwier]

Alan NV8A wrote:
> On 12/23/07 01:36 pm Tim Ellison wrote:
> 
>> You will not always get the "Found new hardware" message.  Particularly if 
>> the device driver is already registered with Windows.
>>
>> The  FLEX-5000 hardware is registered as a sound device under Windows.  
>> Windows wouldn't know a radio if it jumped up and slapped Billy G. in the 
>> face. (which is one of the many reasons why the next version of the software 
>> will not have Windows as the primary OS for running the radio)
> 
> You mean I'll be able to dump Windozzze and use Linux on my shack 
> computer!? How about being able to compile the source code for "The OS 
> for which Windows was merely a placeholder" (= IBM's OS/2, still alive, 
> -- despite IBM's best efforts -- well, and ever improving -- thanks in 
> no small part to dedicated programmers in Russia and Ukraine -- at 
> www.ecomstation.com)?
> 
> 73
> 
> Alan NV8A
>
That is the goal and using parallels or bootcamp on OSX or KVM/QEMU on
Linux will get you the windows support needed for legacy applications.
You will regret not having a Core 2 processor if you intend running
Windows on KVM on Linux.  My Linux machine running Windows XP SP2 under
KVM/QEMU  and using VS 2003 compiles powersdr faster than my P4 HT
running XP!  Alas, there is no serious IO MMU hardware yet so things
like firewire and usb are not or poorly supported respectively.  The
device cannot magically appear in KVM/QEMU in the "right place" and
owned by the guest yet.  But it is clear, this is coming.  Soon, we will
not be having this argument.  You will seamlessly run whatever you want
to WITHOUT having to dual or even triple boot.

But full and complete support of what is coming down the road many moons
out will require an eventual migration of some of the work to a Linux
machine.  Just not tomorrow or next month.

Bob



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TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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must the pessimist always run to blow it out?” Descartes

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Re: [Flexradio] Noise Blanker and large S9+ signals outside of passband

[Robert McGwier]

KX5KW wrote:
> Kurt,
>   You're not the only one.  It makes the noise blanker almost useless 
> for me since there are always other signals in the 96kc if range. 
> 
>   Bob McGwier, N4HY, has some excellent ideas for noise cancelling in 
> the code, but he has a LOT of other projects going on. 
> 
>   I use a modified version of MFJ-1025 here and although it is very 
> finicky to get set up and must be reset any time you change 
> frequency, I would not be able to hear some signals without it.
> PM me if you would like any particular info on my setup.
> 
> Kent/KX5KW
> 


All noise blankers operate on wideband signals.  They do this because
the filtering does pulse stretching making it very hard to determine
with a good probability what is and isn't a pulse.  ALL blankers
modulated the wideband signal because they gate the receiver off.  NB2
does this less than NB because it attempts to take an insufficient (sic)
statistic on the signal and replace what it sees as a pulse with a
reasonable candidate for what the signal should be.  This is based on
find the rank order mean of the signal "in the vicinity".  Neither of
these is perfect but if the pulse noise is periodic you will modulate
the entire passband since the gating on and off of the receiver is like
a mixer.  If a strong signal (such as CW) is inside the passband and it
pass the stupid test for pulse,  it will be gated off.  This can and
SHOULD be replaced with a test for "widebandedness" so strong CW signals
do not pass the test.  I will work on this.

The ultimate tool will be a pulse noise "subtracter".  It is not a
blanker at all (gating the receiver off).  A pulse is detected and then
its amplitude and phase are determined.  An inverse of this is
subtracted from the incoming signal.   This works like "noise cancelling
headphones" by injecting an opposite, negative copy of the signal to
null it.  This has the advantage that it is a linear operation.  It
cannot cause mixing.  Furthermore, single pulses can be excised.  How
can this go wrong?  A false positive detection will remove actual signal
by subtracting the false negative of the pulse.  A fail to detect will
not remove the pulse.  Another plus is that this will operate over much
more of the pulse than the blanker.

There are quicker and not quick things in this we can do.  All new
development is behind

a) wideband image rejection
b) downsampling 192000 and 96000 internally to get the same shape factor
on the IF filters that we have at 48000.
c) IMPROVE the shape factor by downsampling to all divisors of 48000
d) finalize the correct settings and operation of the LMS filtering to
work on complex signals with the correct parameters.

More later

Bob


-- 
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TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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Re: [Flexradio] I'm glad to report success with

[Robert McGwier]

FireBrick wrote:
> got your attention!
> 
> Yes, I got all the right parameters in Steve Nance's great DDUtilty program 
> that allows the PWSDR to not only connect with the DXLABS suite, but also 
> control my Quadra amplifier.
> (Big thanks to Steve for working me through the details)
> 
> This evening I was able to make the proper settings work with Writelog also.
> 
> I just finished setting it up for RTTY Roundup.
> 
> Thanks Steve...
> 
> Now can Steve and the Flexonians please turn their attention 
> toPropagation
> 
> not for everyone...just fix the propagation ...for me...maybe???
> and of course the guys I want to work...
> 
> 
> 
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> 
> 


Great work Steve!  I think you and I and all others need to ask for
Higher Powered Intervention for the propagation.  That bit of maths are
beyond us.  ;-).

Bob


-- 
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TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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Re: [Flexradio] Free visual Studio 2008

[Robert McGwier]

Peter G. Viscarola wrote:
>> Look around and see if you can find an installfest in your
> neighbiorhood!
> 
> Or skip the msft speech, and download and install VS.NET 2008 Express
> Edition for free any time you want.
> 
> The Express Editions are the same (optimizing) compiler and linker, and
> just have a few "enterprise" features removed (like the ability to debug
> an executable running on a remote machine).  Other than that...
> identical.
> 
> I actually PREFER the packaging of the Express Edition.  The help is
> focused on a specific language and support routine, and I find it easier
> to use,
> 
> de Peter K1PGV
> 

The speech is worth it because you can leave before it is over since
they are not smart enough to hold the disk until the end.  This is MSVS
PROFESSIONAL not Express and it is free.  It will fully support CLI and
other things not supported by Express.  If you have the time, and one is
nearby, do it.  It took me fifteen minutes since it was in my home town.


Bob



-- 
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TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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[Flexradio] Flex 5000 review

[Robert McGwier]

The Flex 5000 review by Rob Sherwood is now available from ARRL in the book:

http://www.arrl.org/catalog/?item=1122



Bob

-- 
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TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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Re: [Flexradio] Worked FDMDV mode w/ FLEX-5000A...

[Robert McGwier]

Steve Kallal wrote:
> Sorry, but I didn't realize the DV software was using patented code. The
> source code for MELP is available, but not the source code for FDMDV.
> 
> I still like the idea of digital voice, but was unaware of the legal issues.
> 
> 73,
> 
> Steve N6VL 
> 

It is not your fault, you are not distributing the code.  I am not sure
Jason is even aware of the MELP entanglements.

The problem with MELP is that it has five patent holders and no one will
talk to ANY of the others about it.  This is why algorithms should NEVER
be patented.  I think the Supreme Court is finally beginning to realize
what a mess they have made of things with the 1980's ruling(s) that set
us down this road.  I have friends that work for companies whose only
real mission left in life is suing the world over a portfolio full of
patents or buying a portfolio full as a defensive weapon.  The Supreme
Court recently said that the patent office was clearly issuing patents
that do not meet the letter of the law, much less the spirit, when they
issue patents on things that are "obvious to anyone familiar with the
field".

Bruce Perens, K6BP, is really pushing many of us to come up with an
unrestricted code that works at low bit rates.  We get more evidence
every day that something needs to be done.

Bob


-- 
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TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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Re: [Flexradio] Worked FDMDV mode w/ FLEX-5000A...

[Robert McGwier]

MELP is covered by multiple patents.  It is not licensed to anyone who
has produced this.  This is a road down which there is nothing but
trouble.  It is not the basis of our digital voice future and is in fact
a direct contributor to a lack of progress.  We cannot use it.

Bob
N4HY




-- 
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TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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Re: [Flexradio] VS 2008

[Robert McGwier]

This is not off topic in that developing the SDR code and the tools to
be used are on topic.  It is a Radio first but an Software radio in the
sense of the term defined by the FCC in their recent R&O's.

The answer to your question is, I have NOT downloaded VS2008.  I have
been doing significant development in VS2005 and Flex in VS2003.  What
would be really nice is if 2008 could convert 2003 solutions
automatically.  2005 definitely could not.

I personally have no incentive to download the freebies for my own
personal use as I get all software fromMS on DVD's quarterly at work.

Keep us informed please.

Bob


Steve Nance wrote:
> Bob,
> 
>  
> 
> Have you played with VS 2008 yet? I downloaded it, opened DDUtil which it
> converted without a problem or error message. Seems to run ok and loads
> faster than 2005.
> 
>  
> 
> I don't plan to use it yet, after all I just started using 2005 J. Just
> thought I would try it.
> 
>  
> 
> Steve
> 
>  
> 
> -- next part --
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> 
> 


-- 
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Re: [Flexradio] New NR parameters...

[Robert McGwier]

Steve Kallal wrote:
> I downloaded SVN 1783 and notice there is a new leakage parameter. Could
> N4HY or anyone else knowledgeable on the subject tells us how to use it? The
> Block LMS system was pretty easy to setup.
>  
> 73,
> 
> Steve N6VL


Pretty easy to set up and didn't work well.

We are preparing a knowledge base page using several testers.

73's
Bob
N4HY


-- 
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TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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Re: [Flexradio] DSP windows

[Robert McGwier]

Steve Kallal wrote:
> I've been playing with the Window selection on the DSP setup screen. I
> really can't tell any on the air difference between them in receive. There
> are very slight differences in the display. From past searches, I've noticed
> comments about differences in reception. In laymen's terms, what do these
> Window settings do?
>  
> 73,
>  
> Steve N6VL
>  

Change the display windowing so that you minimize adjacent channel
leakage in the display.  Some will result in more sensitivity to the
peaks but will have more leakage to adjacent channels in the display.
They have no impact on the receiver.

Bob



-- 
AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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Re: [Flexradio] Fatal Error message After running Tortoise Update

[Robert McGwier]

Tim Ellison wrote:
> Bob,
> 
> Should we run fftw_wisdom.exe again?
> 
> 
> 
> -Tim
> 


YES!  Sorry for that omission.  I need a collection of beta testers for
the fftw problems.  I will call upon some of you.  This is an alpha
release of fftw but it has significant enhancements in it.  We have
dropped back to an earlier, and apparently more stable version of
fftw3.2alpha.  One of the things that changed was some fftw_wisdom
output so please run it again.

Bob



-- 
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TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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Re: [Flexradio] Fatal Error message After running Tortoise Update

[Robert McGwier]

Jerry:

Please give svn version 1761 a try.

Bob



Gerald Capodieci wrote:
> Thanks for your suggestions but my problem must be other than with Tortoise. 
> I reinstalled the latest versions of Tortoise, and .net MDAC etc. I created a 
> new folder and ran the check out routine to collect the latest version 1756 
> and on running PowerSDR I get the Fatal Error message. I downloaded V10.1.3 
> and it works fine. Doing a Tortoise update causes it to fail as well. Any 
> suggestion or direction will be appreciated. Perhaps somthing major changed 
> after SVN 1746? 1746 works fine on the SDR1000.
>   Jerry  
> 
> -- next part --
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> 


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[Flexradio] Serial port to ethernet

[Robert McGwier]

I will even do your research for you.  Folks, this took me FIVE SECONDS
to find after I sent my last note.

http://com0com.sourceforge.net/

That is everything you need including serial ports and tcp<-> serial
port code. It may, or may not be functional.  But that is the fun of it
really.  It will compile with VS2005 Express.  Someone needs to test
VS2008/Free.

Bob

-- 
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Re: [Flexradio] Com ports over ethernet and Flex5000

[Robert McGwier]

Folks:


I know folks have come to expect a lot from us and we have come to
expect you to want more and welcome it.  We have every single thing we
need to do this except for hours in the day.  Phil Covington has given
us the virtual serial port driver.  A simple program doing a virtual
serial port on one end and a simple udp or tcp socket passing data and
inband control signals is what is required to make this work.

Somebody with some time and some gumption step up and do this.  My
friends and I will even hold your hand.  It must be GPL but that doesn't
mean you can't make money with it.  As everyone has seen, these things
sell for a lot of money ($100 or so).  Do yourself and us a favor: fund
your next five radios.


Bob


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Re: [Flexradio] Am I the only one having problem keying?

[Robert McGwier]

The problem is acknowledged.  Did this get put into the Bug Reporting? 
I lowered the latency a lot in the last few releases (last couple of 
weeks) as we resolved the issues with the Flex 5000 firmware timing. The 
jitter and other things dealing with keying timing are completely 
resolved so far as I am able to detect.  The focus on CW performance of 
the 5000 has been SO myopic that I missed these messages.  KIRB,  you 
know where I live!  SEND ME EMAIL.

I shorted the start up ring buffer too short for the SDR-1000 switching 
time.  We will have a different start up for SDR-1000 and slightly more 
(5 ms) startup delay between key closure and waveform for the SDR-1000.

My apologies.

Bob



Kirb Nesbitt wrote:
> Nope, your not the only one..
> In addition to what you've mentioned, I'm still having troubles with the
> com port [assigned to the secondary input], running with an ext. keyer.
> 
> 73,
> 
> Kirb - VE6IV
> --
> 
>> For quite some time the keying on my SDR1000 using a paddle has not
> been good via the key jack  on the SDR.  It keys >fine via the com port.
>  But it consistently messes up my third dit on either the letter V or S.
> Strange I know, but true.  >There have been multiple bug reports on CW
> issues posted.  Running SDR 1000 w/ Windows XP; latest SVN; 2 gig
>> memory; USB to parallel connection.
>> 73/Crit/K4BXN
> 
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> 
> 


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Re: [Flexradio] I Wonder If...

[Robert McGwier]

Frank Brickle wrote:
> On Nov 12, 2007 5:01 AM, Frank Hunter <[EMAIL PROTECTED]> wrote:
> 
>> Seriously though, if you're wanting to meet up with a few local hams you
>> could do no better ( or worse ;-) ) than to hook up with the guys from
>> the South Dublin Radio Club, if you like I'll put you in touch with them.
> 
> By all means, hook them up. There are very few countries he hasn't
> been thrown out of by now (and for cause). He'll certainly need
> Ireland to complete the list -- his own very personal kind of DXCC
> Honor Roll, don't you know.
> 
> ;-)
> 
> 73
> Frank
> AB2KT
> 

They are being invited by the wireless sdr group at Trinity already.  I 
am really looking forward to it.  I am sure another Irishman can 
appreciate the irony of Keith from Trinity and I drinking beer in the 
hotel bar at the SDR Forum and us convincing Keith that Odoul's was a 
treat because it was Irish.  The alcohol free did not prove ultimately 
appealing so we took the black mail photo first.

http://n4hy.org/keith_odouls.jpg

Bob


-- 
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[Flexradio] Star-10 Transceiver article in QEX

[Robert McGwier]

Dear QEX Editor:

Cornell Drentea, designer of Dentron amplifiers, and one of the many who 
claim to have invented DDS referenced PLL's (he has as good a case as 
any) has shown a beautiful example of serious professional engineering 
in his Star-10 article and he is to be congratulated on a brilliant 
design and beautiful craftsmanship in building it.  It is a very clever 
and beautifully done traditional design.

This notwithstanding, I have to say that I am particularly disappointed 
that the editors of QEX allowed the tone of the article to go unchecked. 
I have comments on the "commentary" and the pseudoscience in the article.

As the ARRL Software Defined Working Group Chairman,  I found much of 
his commentary both insulting and just plain wrong both personally and 
in my position as a member of this working group.  Let me go through my 
objections in detail. Drentea refers to several projects as "so called 
software defined radio" projects.  The so called software defined radio 
projects to which he refers are now in use in the Department of Defense, 
  Department of Justice, Department of Transportation,  and many radio 
astronomy sites and many laboratories in many countries.  Virginia Tech, 
the premiere university in the United States for Mobile and Wireless 
communications engineering education has one of the strongest, if not 
the strongest, software defined radio program in the country and it is 
but one.  This and many other universities use GnuRadio, DttSP, and more 
which are the objects of Drentea's scorn.  The SOFTWARE defines them as 
software defined radios and they meet every definition of a software 
defined radio in the recent FCC rules on SDR and cognitive radio in 
their application to the SDR-1000, Flex 5000, Softrock, Universal 
Software Radio Peripheral, HPSDR, uwSDR, and more.

In a clear reference to Flex Radio's SDR-1000,  Flex 5000A, Softrock, 
Norcal 2030 and other radios based upon the Quadrature Sampling Detector 
or Tayloe detector (balanced or unbalanced), Drentea denies that the 
measurements made by the ARRL labs in the review of the SDR-1000 and the 
reviews made of the Flex 5000A by Rob Sherwood (published recently in 
Passport to HF and soon on his web site) constitute credible authorities 
on the characterization of radios.  Having never seen any of Drentea's 
measurements of his own radio, I cannot attest to the credibility of his 
measurements but I do have a comment.  As a person who works 
professionally to do software radio for the U.S. government, I do not 
know of a lab that can measure 150 dB of IMD dynamic range.  The 
required purity of the oscillators alone involved in both the Star-10 
and the test equipment is beyond imagining.  The PRODUCT of their noises 
must be so low as to require something like temperatures that are 
physically impossible to get and have the oscillators continue to 
function!  The editorial board of QEX should not allow such ridiculous 
claims to go into print.

Finally, let me state as emphatically as possible.  Neither the QSD or 
the Tayloe mixers are direct conversion receivers of the type Drentea 
refers to in his article.  He simply does not understand what they are. 
  Having analyzed the QSD in the SDR-1000 with the mathematics of 
Laplace Transforms to find both its transitory and steady state 
response, I can assure you, he simply does not know what he is talking 
about and has made a fool of himself.

To say that I am disappointed is to really understate the situation. I 
am livid beyond almost all repair.

Bob
N4HY

-- 
AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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Re: [Flexradio] 512 buffers @ 96 kHz on 5000A

[Robert McGwier]

Shortly this filter difference will be resolved.  All filters, 
irrespective of sampling rate, will have the exact same shape factor as 
the 48000 Hz.  Shortly after that,  we will be able to support even 
better filters if the user can live with the latency through the RX 
chain and with this second change, we will have an extra benefit.  We 
will be able to reduce the computational complexity at all sample rates 
to the minimum required by the bandwidth chosen for the filter up to 
some coding practicalities.  This yoga/magic/dsp/software engineering 
should have been accomplished a long time ago and the code to do it has 
been in dttsp since the first day of its existence.  The weekend I 
introduced 96000 and 192000, I should have done this at least 1/2 way 
step immediately and done this with the other code.

QRX for this as Frank and I discuss the design for this and he makes it 
fit into the dttsp v2.0 version of things.  It will turn up in PowerSDR 
shortly thereafter in some form and I sure it will be greeted kindly by all.


Bob
N4HY


Steve Kallal wrote:
> I've have tried to achieve 512 buffers at 96 kHz. I'm not using 192 kHz
> because I want a sharper CW rx filter shape. 192 kHz would be OK for SSB,
> but on CW the display is too compressed.
>  
> I can do 512 buffers at 96 kHz, but it gets unstable. CW break-in can crash
> the system. The 5000A gets stuck in a state where the panadapter display
> looks frozen even when changing the frequency. Cycling the 5000A power off
> and back on again, gets me going again. I've found 1024 buffers fixes it.
> Also listening to WWV has get choppy at 512.
>  
> 1024 buffers are OK, except I would like to get the latency reduced. I am
> using a 2.6 GHz P4 with 1 GB RAM. Is this typical with a P4 system? Would a
> dual core help? I've tried two Firewire cards with the same results. I can
> try to trim down Windows XP and turn off some services.
>  
> The bottom line is I'd like to know if the buffer size for the sample rate
> is typical, or if I need to do some system tweaks.
>  
> 73,
>  
> Steve N6VL
>  



-- 
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TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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[Flexradio] XML

[Robert McGwier]

I see that Phil Covington did an XML description some time back.  I am 
pretty unhappy we didn't pick up on that sooner.  Sorry for the 
oversight Phil.  Nevertheless Bob's work can put the effort back on track.

73's
Bob

-- 
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Re: [Flexradio] Announcing FlexProfiler

[Robert McGwier]

Bob Tracy wrote:
> All,
> 
> I have posted FlexProfiler Ver. 1.0 [beta]to
> svn://206.216.146.154/svn/repos_sdr_windows/FlexProfiler/trunk.  The setup
> file is in /bin/Release/FlexProfiler Setup and the documentation is in
> /Documentation.
> 
> FlexProfiler is a stand-alone configuration management program that lets you
> store the state of certain PowerSDR console user controls in an XML file and
> then recall/restore it at a later time.  Almost all of the user controls on
> PowerSDR are available for storage including both EQ's, TX filters, and the
> digital mode controls.  You have to create the profiles in FlexProfiler but
> you can recall them from PowerSDR (SVN 1719 or later) without FlexProfiler
> running.
> 
> The uses for FlexProfiler are only limited by your imagination and machine
> memory.  I have been using it to do a one-click setups for 20 meter PSK31
> and my favorite 75 meter ragchew frequency.  I also have a profile for my
> SDR-1000 that makes sure the drive level and X2TR button are properly
> configured to drive my amp.  These are just some small examples, using only
> a tiny portion of the controls available.
> 
> I have not implemented the VHF bandswitch buttons yet so any XVTR setup will
> not be reflected in a profile.  This is next on my list and I'd like to hear
> from some of you VHF/UHF types on what other things you might need.  Also,
> the antenna controls and amp relay switching on the FLEX5000 need to be
> implemented.  These things, and several others, on on my "TODO" list.  Your
> suggestions are most welcome.
> 
> This is beta software so bugs are probable (certain?).  Please contact me
> directly at btracy at anvilcom dot com with any bug reports or suggestions
> so we don't create unnecessary clutter on the reflector.
> 
> 73,
> 
> Bob K5KDN
> 

Very very awesome and very glad to have our first solid XML description 
of the radio state and an external way to set the radio to a known 
state.  Indeed,  I say that we get rid of the software dealing with the 
microsoft db and go here forever.  This is a major step in the right 
direction.

Bob


-- 
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TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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Re: [Flexradio] FA: FlexRadio SDR-1000 Receiver w/ HPSDR Atlas/Janus/Ozy Boards

[Robert McGwier]

Jerry Flanders wrote:
> WOW! - after only two days, bid is up to $681 for this "special 
> receive only" model. If/when I ever sell my conventional SDR-1000, I 
> think I may split it into two pieces first (one rare RX only model 
> and another rare TX only model!) ;-)
> 
> Good ad, Guy, and obviously effective.
> 
> Jerry W4UK

In 10 more days of linear prediction, it will finally have reached the 
compensation commensurate with the effort expended on the ad.

;-).

Bob

> At 08:17 PM 11/4/2007, you wrote:
>> Flexers: Over the last two years I've thoroughly enjoyed my SDR-1000, and
>> more recently the enhancement offered by the HPSDR boards. However, I'm
>> moving on to other radio hobby activities and have my gear for auction.
>>
>> Please check out Ebay item # 140175926854 ...


-- 
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TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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Re: [Flexradio] I Wonder If...

[Robert McGwier]

Frank Hunter wrote:
> FireBrick wrote:
>> By any chancewould those seminars be at a pub?
> 
> Better than that even! :-) We all get together at our local club (GI2BX) 
> which meets in a social club - the beer is cheap!
> 
> 73, Frank GI4NKB
> 

Come hear my talk at Trinity next month and we will test the local 
establishments.  I understand they have installed a Guinness tap next to 
my lectern so I hope it will be worth attending.  ;-).

Bob
N4HY

-- 
AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
“An optimist may see a light where there is none, but why
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Re: [Flexradio] I Wonder If...

[Robert McGwier]

This is in the planning stages.  When I suggested it to Gerald about two 
months ago, he was very enthusiastic.  I have NO details to pass on 
other than to say Flex sees the value in it.  I suggested that the 
developers be brought in at Flex expense so users could come and gripe 
or praise as the case may be.

QRX,
Bob



Richard Stouffer wrote:
> Every time I pulse the reflector seeking a solution for problems I have with
> SDR or the Hardware, I'm amazed at the wide spectrum of collective
> experience and knowledge Flexers have.  I can only imagine how enlightening
> it would be to sit in room full of Flexer and learn form their knowledge and
> experience. 
> 
>  
> 
> It made me wonder if Flex might be willing to hold a seminar or workshop for
> Flex owners and Flex staff on how to get the most out of the hardware and
> software as well as a quick overview of some of the more esoteric subjects
> (at least n the eyes of the less technical among us) relationships like
> filters and buffers and sample rate, etc.
> 
>  
> 
> I get the impression that a large number of Flex owners are in Texas and
> that a fist session in Austin might be pretty convenient to a large number
> of us who could benefit from such a session.  I would drop everything and
> drive to Austin for such a session.  What do the rest of you think?
> 
>  
> 
> Richard, WU5K
> 


-- 
AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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Re: [Flexradio] CW keyer [primary] input

[Robert McGwier]

There are a couple of things going on here.  Please check out the code 
as put up by Eric and I this afternoon.  I believe it fixes several bugs 
in the cw ring buffering system that arose when we "perfected" break-in 
and have been in there since.  We did make such a HUGE improvement in 
the keyer back then that we simply assumed we were done rather than do 
serious testing.  Eric worked on secondary keying port issues today.

Test this stuff out again (Eric and Gerald did in the lab but the more 
the merrier) and if stuff is not right, submit a bug report.

Bob
N4HY


Kirb Nesbitt wrote:
> Still trying to get my head around this. Given the fact (per the manual)
> that the "Primary" keyer input takes precedence and overrides any device
> attached to the "Secondary" input, one would assume you'd have at least
> the same level of functionality as is available on the secondary input.
> I'm referring specifically to accessing the PTT and keying lines
> (DTR/RTS) as assigned to the DB9.
> Why do these pins only become active when assigning secondary status to
> the Com port?
> For those of us who use the com1 as our only interface it precludes the
> use of  keyer driven/timed PTT and keying sequencing on the port.
> 
> 73,
> 
> Kirb - VE6IV
> 
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> 


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Re: [Flexradio] FYI

[Robert McGwier]

Please enter a bug report on this issue.

It is accepted as real and impacts with SDR-1000 and Flex 5000.  There 
is an optimal fix and a quicker bandaid.  After I check out the quicker 
bandaid,  I will put this into the code.

Bob


J. Crit Harley, MD, C.Ht. wrote:
> Perhaps I am the only one this ignorant but FYI, just in case.
> I did a quick search of knowledge base and did not find this mentioned 
> so am posting this.
> When operating CW, if you reduce the break-in delay too much you begin 
> to have timing problems.
> The SDR 1000 will follow the keying at a break-in delay of 20 msec and 
> will be solid in a 2nd RX (for a while).
> But after several minutes of operating the timing gets "messed up" and 
> soon the dits become shortened.
> This is easily noticeable in an audio monitoring program like CWGET but 
> is also noticeable when listening to second RX.
> This is cured temporarily by toggling the ON/STANDBY switch in the SDR 
> window.
> My setup is fairly robust ... dual core AMD w/ 2 gig memory, XP  and 
> usually run < 20% CPU usage even w/ 4 other programs running.
> Happens w/ keying via the COM port or directly into the SDR.  Still 
> happens when change the DSP buffers to other parameters.
> Keeping the break-in delay to 100msec works great ... can't hear between 
> elements but can hear between letters/words.
> I did not test for the minimum break-in delay that works flawlessly. 
> This goes back in various software versions to when the break-in delay 
> first broke the 150 msec barrier.
> YMMV
> Tnx/73
> Crit/K4BXN
> -- next part --
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> 


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[Flexradio] ALC An easy first for the Flex Wire

[Robert McGwier]

It will be an easy attachment for Flex Wire interface to give you ALC 
input back to the radio from your amplifiers.  Limiting yourself to JUST 
this topic, entitle your message "Flex Wire ALC" please send what it 
needs to do for you to [EMAIL PROTECTED] so he can put together a 
common denominator.  By this I mean,  how many amplifier ports should be 
on it? What kinds of settings, ranges, etc. does the software need to 
support?  Again, limit your input to this topic and this topic only and 
use the Flex Wire ALC subject so John can get all mail into a single bin.

Bob

-- 
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TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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[Flexradio] AMSAT Meeting in PITTSBURGH (not Philly)

[Robert McGwier]

Sorry! I typed Philadelphia (where I was last weekend) and I meant
Pittsburgh, Pa which is indicated on the links.

Ooops.

Bob

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[Flexradio] AMSAT Meeting in Philadelphia

[Robert McGwier]

The Radio Amateur Satellite Corporation, Inc. (AMSAT), a non-profit
501c3 organization in the U.S. which designs, builds, launches
satellites for the use of radio amateurs worldwide is holding its
annual meeting in Pittsburgh, Pa. this coming weekend.

http://www.amsat.org/amsat-new/symposium/2007/index.php

As with all amateur radio endeavors of any significance,  a lot
happens as a result of holding these meetings, and usually in the last
hours before the event.   This one is no different but I take the time
to write to you because of some significant things that will happen at
this meeting.

The following well known amateurs will attend in addition to the usual
list of AMSAT suspects.

Frank Brickle, AB2KT
Designer and co-author of DttSP, the software core used in PowerSDR
(Flex-Radio), uwSDR (http://uwsdr.berlios.de)  , jSDR, DttSP-shell,
and several others. Designer and author of the VR, a radio kernel to
be used in software/cognitive efforts for robust distributed computing
radio systems and recently described at the DCC.  Contributor to
GnuRadio and HPSDR. For a general introduction to the entire area
please http://www.nitehawk.com/w3sz/start.htm


Phil Covington, N8VB
Designer, author,  leading developer in the HPSDR offerings
(http://hpsdr.org) including Atlas, Ozymandias with contributions to
Janus, Mercury, Penelope, and more.

Matt Ettus, N2MJI
GnuRadio.  Design of USRP and USRP2 for GnuRadio.  And lead designer
on the AMSAT Advanced Communications Package.
http://ettus.com
http://gnuradio.org/trac

Hartmut Päsler DL1YDD (AMSAT-DL V.P.)
Hartmut will be telling us of the current status of Phase 3E and their
launch opportunities and about Bochum 66' Dish that has been used to
receive signals from planetary probes.

Bruce Perens K6BP
formerly of Pixar and amongst other things, editor of the Bruce Perens
Open Source series of books.

http://www.informit.com/promotions/promotion.aspx?promo=135563&redir=1
http://perens.com/

Gerald Youngblood, K5SDR
Owner of Flex-Radio,  designer of the SDR-1000, Flex5000
CONTRIBUTOR OF A MAJOR SYMPOSIUM PRIZE!!

At this meeting AMSAT-NA will announce a major new satellite
opportunity for us and how we intend to take advantage of it if all
the stars line up!  President Rick Hambly, W2GPS, has been working
nonstop on this and we are excited to tell you about it in the first
level of detail we are able to give and how we will be proceeding.

We have an international audience attending and the symposium agenda
is available from the URL above and many great speakers.  Ya'll come.

I realize that this is the last minute but more than a little bit of
this stuff happened in the LAST TWO WEEKS and until it was ready to
release,  we just couldn't.  I am hoping to reach amateurs who are
within driving distance of Pittsburgh or those who can decide at the
last minute to come.  I believe this is an AMSAT symposium you do not
want to miss.

Bob McGwier

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Re: [Flexradio] [hpsdr] Allen Array goes online today (Thursday Oct 11)

[Robert McGwier]

Jim:

Exactly what we found on the SRS and more.  Power is not the issue at 
Hat Creek.  Performance is.  We measured the performance of the SRS 
tamed by a very high quality GPS with all sawtooth non-Gaussian noise 
removed (sawtooth removed and residuals are for all practical purposes 
Gaussian with ~1 ns RMS).  It was designed to operate with GPS taming 
where the sawtooth error on the 1 PPS was present.  This really does 
impact its acquisition time drastically and the design of the loop 
filter in the SRS at all settings shows the impact of this design decision.

The measurements were made against Hy Masers available to Tom and Rick.

Best 73's
Bob





Jim Lux wrote:
> At 12:34 PM 10/14/2007, Robert McGwier wrote:
>> The heart and soul of a phased array is the common clock driving
>> oscillators, samplers, etc.
>>
>> http://n4hy.smugmug.com/gallery/3634776#207453486
>>
>> Shows CNS clock (W2GPS)  based on Tom Clarks TAC (K3IO).  They recently
>> evaluated the SRS Rubidium for me.
>>
>> We will be making recommendations.  ;-).
> 
> 
> I've done quite a lot of phased array work, as well as precision phase 
> measurements and designing and building equipment with high precision 
> phase performance (deep space navigation and radio science depends on 
> very well understood phase noise/Allan deviation properties).
> 
> Unless you found the SRS very cheap as a used device, I'm not sure it's 
> worth it.  Sure, it's got good absolute accuracy after a suitable 
> multi-hour warmup, but it's pretty power hungry and you have to worry 
> about the Rb lamp life.
> 
> Probably you're better with a good quality quartz oscillator disciplined 
> by GPS or other external source. With software adjustment or DDS 
> synthesis, you don't even need to ovenize the oscillator, especially if 
> you find one with low hysteresis, if you can make reasonably accurate 
> temperature measurements of the crystal. The V-F oscillator on the SDR1K 
> is actually quite good and repeatable.
> 
> 
> http://www.gmat.unsw.edu.au/snap/gps/clynch_pdfs/pttinote.pdf
> 
> has a nice plot comparing all the various sources and their performance 
> on time scales from a few milliseconds to days.  Quartz is pretty much 
> as good as anything else up to time scales around 10 seconds or more.
> 
> If you're thinking of building a radio interferometer, the properties of 
> your reference oscillator are probably not the most important thing in 
> your design, anyway.  It's distributing the oscillator and calibrating 
> the array (assuming you can get the array stable) that's the challenge.
> 
> If you're looking for quiet VCOs for microwave frequencies, Hittite has 
> a bunch of inexpensive GaAs VCOs and VCO/PLLs that are very competitive 
> (as in better in many ways) with DROs in that range. And, they're a heck 
> of a lot easier to use and build than a DRO.
> 
> But, if you can score a cheap Rb source, have at it.  Even better if you 
> can find a  H-maser (factor of 10 better than the rock in terms of Allan 
> deviation at short tau)
> 
> 
> Jim
> 


-- 
AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
“An optimist may see a light where there is none, but why
must the pessimist always run to blow it out?” Descartes

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Re: [Flexradio] [hpsdr] Allen Array goes online today (Thursday Oct 11)

[Robert McGwier]

The heart and soul of a phased array is the common clock driving 
oscillators, samplers, etc.

http://n4hy.smugmug.com/gallery/3634776#207453486

Shows CNS clock (W2GPS)  based on Tom Clarks TAC (K3IO).  They recently 
evaluated the SRS Rubidium for me.

We will be making recommendations.  ;-).

Bob
N4HY


Robert McGwier wrote:
> Philip Covington wrote:
>> * High Performance Software Defined Radio Discussion List *
>>
>> <http://www.technologynewsdaily.com/node/8209>
>>
>> <http://www.seti.org/>
>>
>> 73 Phil N8VB
>> ___
> 
> 
> http://n4hy.smugmug.com/gallery/3634776
> 
> and a great time was had by all.
> 
> 
> 
> 73's
> Bob
> N4HY
> 


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TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
“An optimist may see a light where there is none, but why
must the pessimist always run to blow it out?” Descartes

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Re: [Flexradio] [hpsdr] Allen Array goes online today (Thursday Oct 11)

[Robert McGwier]

Philip Covington wrote:
> * High Performance Software Defined Radio Discussion List *
> 
> 
> 
> 
> 
> 73 Phil N8VB
> ___


http://n4hy.smugmug.com/gallery/3634776

and a great time was had by all.



73's
Bob
N4HY

-- 
AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
“An optimist may see a light where there is none, but why
must the pessimist always run to blow it out?” Descartes

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[Flexradio] Further EXCELLENT Erlang news

[Robert McGwier]

Today I was able to configure and compile erlang from source only with 
cygwin.  I have tested it.  I needed to run the cygserver so fork, 
shared memory, named pipes, etc. and all of the other things that 
windows was not smart enough to provide ;-) but following this, it just 
plain worked.  I compiled it successfully with options not normally 
included int he Tk/Windows version.  I think on windows this will be the 
preferred way to run erlang.

I have given my comments back to the erlang folks.

Bob

-- 
AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
“An optimist may see a light where there is none, but why
must the pessimist always run to blow it out?” Descartes

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Re: [Flexradio] Erlang Book...

[Robert McGwier]

Pete and friends:

Please take a look at  Joe's Ph.D. thesis.  It is readable and gives 
more in depth look at the basis for his thinking (in case you are 
interested) as opposed to the limited exposure to his philsophy in the 
book.  It is clear from reading the book and his comments that his 
editors made him back off the pulpit and go to the blackboard to provide 
proof.   It is one of the best written programming books I've ever read. 
  I should have pointed it out much earlier.  I have been following it 
ahd helping find errata and providing commentary for almost a year via 
pdf distribution which has been available for about that long.

http://www.sics.se/~joe/

Thesis is here:

http://www.sics.se/~joe/thesis/armstrong_thesis_2003.pdf

Bob

[EMAIL PROTECTED] wrote:
> FYI, anyone interested in finding out what this Erlang thing is all
> about, there's a rather nice book available:
>  
> "Programming Erlang - Software for a concurrent world." 
>  
> Author: Joe Armstrong
> ISBN-10 1-934356-00-X
>  
> I picked it up from Amazon for about $25.00 + shipping.
>  
> There are some tutorials etc available on the Erlang web site but I much
> prefer having a real book to browse through.  The subject matter
> includes the OTP (Open Telecom Platform) specifics, which I understand
> are utilized in the forthcoming console replacement.
>  
> Pete, N3EVL
>  
> Peter J. Thompson 
> Principal Software Engineer
> EMC Software 
> EMC Corporation
> 150 Cambridge Park Drive
> Cambridge, MA 02140
>  


-- 
AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
“An optimist may see a light where there is none, but why
must the pessimist always run to blow it out?” Descartes

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Re: [Flexradio] filter shape factor

[Robert McGwier]

The only dumb question is the one where you worked at understanding and 
when you ran into a road block, you did not ask for help and got 
frustrated.  This was not dumb because I am sure others are making the 
same mistake and you did work at it and then asked.  That is my 
description of the optimal use of this group.

Bob
N4HY


Tom Thompson wrote:
> Dale,
> 
> DUHH, I guess I need to learn how to read.  I read spectrum, tanslated 
> it in my mind as spectrum analyzer, and promptly set up the pan 
> adapter.  Thanks for your patience.  Bob, please ignore my dumb inquiry.
> 
> 73,
> 
> Tom   W0IVJ
> 
> 

-- 
AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
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must the pessimist always run to blow it out?” Descartes

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Re: [Flexradio] [Web Update] FLEX-5000C pictures on the web site

[Robert McGwier]

Tim Ellison wrote:
> There are new pictures of the FLEX-5000C on the FlexRadio web site.
> Front and back views.
> 
> You can see them on the FLEX-5000C Details web page 
> http://www.flex-radio.com/Products.aspx?topic=F5Kc_details
> 
> 
> -Tim
> 
> FRS KB Administrator
> 

Accchhh.  Just like the early 5000A pictures,  these do not do it 
justice.  And the real beauty is inside.  The Cage the computer is in is 
a very nice piece of work.  With the receiver and a loop of wire, I 
moved it around the computer.  I could not easily detect it. The fan on 
the computer cannot be heard.  It is a tank inside.

I sent CW on it at the DCC and my geek friends looked at me like I was a 
turning pink or mauve.  ;-).

Bob


-- 
AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
"If you're going to be crazy, you have to get paid for it or
else you're going to be locked up." Hunter S. Thompson

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Re: [Flexradio] PowerSDR and Vista

[Robert McGwier]

Jim Lux wrote:
> At 09:30 AM 10/4/2007, Robert McGwier wrote:
> 
> 
>> That was what I thought you were going to say.  To me this is not 
>> acceptable because it means no guarantee of support.
> 
> I don't see why it means no guarantee of support.  MS provides a fair 
> amount of support for running VS2003 under Vista.. extensive 
> knowledgebases, forums full of folks to answer, email support.  Heck, 
> they'll even let you bring all your junk to Redmond and set you up in an 
> office with a test machine.
> 
> 
> Mind you, this level of support (for VS2003) won't last forever.

That is my point.  They can break it at any time with almost no warning 
with an update because they do not guarantee support.  In fact, as we 
have already said when it installs,  Vista warns you it is not supported 
and will probably fail.  This means that they built in a detector into 
the installer that detects it is VS2003 being installed and then issues 
the warning.  I cannot afford to do anything but take them seriously.


Bob



-- 
AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
"If you're going to be crazy, you have to get paid for it or
else you're going to be locked up." Hunter S. Thompson

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