Re: [Flexradio] On software development by groups, in general

[Bob McGwier]

In other words,  with the rich set of resources with more fine grained
control, and easier to get at components,  the DESIGNERS will have all the
tools they will need if we do our job right.  What we have had for several
years is the monolithic program almost (even though there were clear parts),
contributing to them will STILL BE, show me the code but for those things
you are willing to pay for.  We are there and in spades in my opinion. So if
this is the continuing point Jim is trying to make, he finds some support in
this corner.  We have gone about as far as free as in air can take us while
free as in speech will continue to be the most important decision Gerald
ever made and one for which I am personally eternally grateful.

Having said all of that hoo-haa, caviling (whining) is a God given right to
all amateur radio operators, most especially in the U.S.  It comes in Part
97 with the universal axiom set.

Bob


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

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Frank Brickle
Sent: Sunday, August 03, 2008 7:37 PM
To: Jim Lux
Cc: flexradio@flex-radio.biz
Subject: Re: [Flexradio] On software development by groups, in general

http://blog.seattlepi.nwsource.com/microsoft/archives/141821.asp

In any case, as it pertains to our SDR development, the dichotomy in the
article you cite is a false one. Right now the game is in providing
developers with a rich set of resources with which to create a variety of
tailored user interfaces. That's a domain found entirely outside the
cavilling in the article.

73
Frank
AB2KT




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Re: [Flexradio] On software development by groups, in general

[Frank Brickle]

http://blog.seattlepi.nwsource.com/microsoft/archives/141821.asp

In any case, as it pertains to our SDR development, the dichotomy in the
article you cite is a false one. Right now the game is in providing
developers with a rich set of resources with which to create a variety of
tailored user interfaces. That's a domain found entirely outside the
cavilling in the article.

73
Frank
AB2KT

On Sun, Aug 3, 2008 at 4:19 PM, Jim Lux <[EMAIL PROTECTED]> wrote:

> An interesting editorial, of some relevance to software for SDRs
>
> http://mpt.net.nz/archive/2008/08/01/free-software-usability
>
> The linked articles within are also interesting.  As is the slashdot
> thread referencing the above.
>
> We've come up against this at work, too. Who is the user of a software
> radio on a spacecraft?  Do you design the software environment for the
> developer of waveforms for the radio, or do you design for the
> operator of the radio.  The former would love to have shell prompts,
> nifty cool flexibility, nice libraries and configuration files.  The
> latter wants simple "turn radio on", "engage subspace communications"
> commands with minimum system complexity.
>
>
>
> Jim, W6RMK
>
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>
>


-- 
Travelling by airplane in the US is nothing more than mass training of
Americans to the requirements of the coming police state. The whole point is
to make you learn to acquiesce without question, en masse, to completely
absurd directives by dull functionaries wearing uniforms. -- Digby
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[Flexradio] On software development by groups, in general

[Jim Lux]

An interesting editorial, of some relevance to software for SDRs

http://mpt.net.nz/archive/2008/08/01/free-software-usability

The linked articles within are also interesting.  As is the slashdot  
thread referencing the above.

We've come up against this at work, too. Who is the user of a software  
radio on a spacecraft?  Do you design the software environment for the  
developer of waveforms for the radio, or do you design for the  
operator of the radio.  The former would love to have shell prompts,  
nifty cool flexibility, nice libraries and configuration files.  The  
latter wants simple "turn radio on", "engage subspace communications"  
commands with minimum system complexity.



Jim, W6RMK

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Re: [Flexradio] SDR-1000 PowerSDR v1.12.1 with dedicated I/Q settings per each band

[Willi Reppel]

Chris,
My SDR1000 is not operational for the time being, but I remember that a 
found setting for best image rejection is changing rapidely when detuning 
some kHz from the frequency you used for the calibration. So I guess you 
would need an indefinite number of locations to store said optimal settings. 
Try and find out how many optimal image rejection setting you would need per 
band and reconsider what you ask for.

vy 73
SM6OMH  Willi
- Original Message - 
From: "Christos" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; "FlexRadio biz" ; 
"Christos Nikolaou" <[EMAIL PROTECTED]>
Sent: Sunday, August 03, 2008 9:24 PM
Subject: Re: [Flexradio] SDR-1000 PowerSDR v1.12.1 with dedicated I/Q 
settings per each band


> Gerald Youngblood wrote:
>> Dear Chris,
>>
>> With respect, I must say that your statement below is simply false.  We 
>> make
>> a significant investment in PowerSDR software development, which includes
>> ongoing support for the SDR-1000.  We receive NO ongoing revenue from 
>> from
>> any of our existing customers to help pay for support and improvements. 
>> New
>> FLEX-5000 sales pay for the free improvements that you and our other
>> customers receive on a daily basis through the SVN.
>
>
> Dear Gerald,
> I have the sense that software improvements is a commitment from
> FlexRadio and it is included in your old motto: "The radio that keeps
> getting better".
>
>
>> With regard to RX and TX image calibration by band, the FLEX-5000 has 
>> built
>> in test equipment (BITE).  The SDR-1000 simply does not.  To do the
>> calibration by band on the SDR-1000, we would need to automate through
>> software an external spectrum analyzer and signal generator using a GPIB
>> interface.  Even on Ebay, the test equipment to do that would cost at 
>> least
>> $5000.  The software work to do that would be costly as well.  There is
>> simply not a practical or cost effective way to do this on the SDR-1000.
>>
>
>
>
> I consider per band image calibration a major feature and certainly you
> don't need to have BITE in the sdr1k for this purpose. The least one
> needs is just a second tranceiver and the permission  from  the software
> (PowerSDR) to let you store different settings for each band. It is that
> simple.
>
>
>
>> FlexRadio has made a long term commitment to support the SDR-1000 in 
>> future
>> software architectures.  This means only cost to FlexRadio and not 
>> revenue.
>> That means that SDR-1000 and FLEX-5000 owners will continue get new 
>> features
>> and even performance enhancements at no cost.
>
> I agree on that.
>
>>  I don't think you will find that commitment coming from any of the guys 
>> across the Pacific.
>>
>
>
> That's why I am demanding from FlexRadio.
>
>
>> There is an old saying that goes, "Don't look a gift horse in the mouth 
>> because..."
>>
>
>
> A horse with rotten teeth is completely useless even as a gift, so a
> look in its mouth is mandatory.
>
> And please consider my comments as well-intentioned.
>
> 73 de Chris (sv1fxo)
>
>> -Original Message-
>> From: [EMAIL PROTECTED]
>> [mailto:[EMAIL PROTECTED] On Behalf Of Christos
>> Sent: Friday, August 01, 2008 2:50 AM
>> To: flexradio@flex-radio.biz
>> Subject: [Flexradio] SDR-1000 PowerSDR v1.12.1 with dedicated I/Q 
>> settings
>> per each band
>>
>>   First of all, dedicated Tx & Rx image calibration for each band is only 
>> a
>> software issue.
>> I believe that Flex Radio deliberately didn't implement this feature to 
>> the
>> sdr1k for the favor of the flex5k.
>> Sdr1k although innovative now it's an abandoned project on both hardware 
>> and
>> software sides.
>> Maybe some day the same will happen to the flex5k too.
>>   Christos (sv1eia) thanks a lot for your help.
>>
>> 73 to all de Chris (sv1fxo)
>>
>>
>>
>>
>> Hi,
>>
>> Some time ago a friend of mine that has an SDR-1000 asked me how 
>> difficult
>> is it to have specific image rejection settings per each band like the
>> Flex-5000 has.
>>
>> After some code searching I came up with a solution to his request so
>> separate settings of phase,gain on rx and tx per each band will be 
>> available
>> to his SDR-1000.
>>
>> I do not knkow if this is of use to you, but I did send a post to the 
>> Flex
>> guys here and did not got back a reply.
>> Anyway, I have a svn already in Google Code so if someone wants it here 
>> is
>> the installation file with the latest updates based on PowerSDR v1.12.1
>>
>> -> http://powersdr-iq.googlecode.com/files/PowerSDR%20Setup.msi
>>
>> Also the source of this build for examination if Flex coders want it is
>> under "Flex" branch.
>>
>> Since this work has been done for one SDR-1000 user, I guess it is good 
>> for
>> others to enjoy it freely too.
>>
>>
>> 73
>> Christos SV1EIA
>>
>>
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>> Archives: http://www.mail-archive.com/f

Re: [Flexradio] SDR-1000 PowerSDR v1.12.1 with dedicated I/Q settings per each band

[Jim Lux]

Quoting "Ray, K9DUR" <[EMAIL PROTECTED]>, on Sun 03 Aug 2008 01:14:29 PM PDT:

> Christos,
>
> You wrote, "But a major feature like dedicated image rejection per band is
> still missing. Maybe it takes a big effort to find  the lines in the code
> that exclude sdr1k."
>
> Apparently you missed the post from Gerald, K5SDR, (the president of
> FlexRadio Systems) where he explained that performing a separate image
> rejection calibration per band was NOT a software issue, but a limitation of
> the hardware in the SDR-1000.
>
> The Flex-5000 has this feature because of built-in test generators that make
> this function possible.  To do an image rejection calibration on any band on
> the SDR-1000 requires an external signal source of some type.
>
> FlexRadio has continuously stated that they intend to continue supporting
> the SDR-1000 into the foreseeable future WITHIN THE LIMITATIONS OF THE
> HARDWARE UTILIZED IN THE SDR-1000.
>
> IF the hardware isn't there to support it, then the software can't fix it!

I sympathise with the sentiment in general, but I think you're wrong.   
The SDR1K has ZERO, ZIP, NONE, NADA internal calibration capability,  
but yet PowerSDR (and, before that, SDRConsole) have the capability of  
the single calibration, assuming you have an external source to do the  
cal with.

The inherent calibration capability of the SDR1K and F5K are  
identical, since neither does any of the calibration in hardware, but  
it's all done in software. Here, I take calibration to mean the  
process of using a previously determined set of data/measurements to  
compensate for the non-ideal characteristics of the device. The actual  
measurements are called characterization.  It's the characterization  
which the F5K supports and the SDR1K does not.



I would assume the reason the new feature hasn't been added is that  
Flex has made a reasonable allocation of development resources.


>
> 73, Ray, K9DUR
>
>
>
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Re: [Flexradio] SDR-1000 PowerSDR v1.12.1 with dedicated I/Q settings per each band

[Jim Lux]

Quoting Christos <[EMAIL PROTECTED]>, on Sun 03 Aug 2008 10:32:56 AM PDT:

> But a major feature like dedicated image rejection per band is still
> missing. Maybe it takes a big effort to find  the lines in the code that
> exclude sdr1k.

I don't know that PowerSDR actually doesn't support per band  
calibration.  When the program starts up with the F5K, it reads the  
calibration numbers from the EEPROM in the radio and stores them in a  
structure in PowerSDR.  There's no particular reason why, in the SDR1K  
case, it can't be read from a file. (and presumaby that's what's in  
the code you published)

However, getting the values for those numbers for the SDR1K is a bit  
of a challenge.. as Gerald pointed out, it requires external test  
equipment and setup, so it's not an automated process.

At some point, Flexradio has to allocate it's exceedingly scarce  
software development resources to one thing and not another.  Perhaps  
per-band calibration just isn't high enough on the priority list  
compared to, say, full break in QSK CW (certainly, there's a huge hue  
and cry for that, compared to image suppression)...

There's a bit more than just reading in the table from a file  
involved.  Realistically, one would also need to create the user  
interface for the calibration process (some variant on what's already  
done for the single cal), and that's a non-trivial process.  At least  
for the F5K, no user interaction is needed, so the UI is very simple:  
"start cal" and stand back waiting for it to finish.

For the multiband, you'd have "set signal generator to x,y,z. Press  
continue." attempt the measurement, validate that it's ok, "next band"

having written this sort of thing, it's a real chore to make it clean  
and user acceptable: If you just whipped out a quick and dirty for  
yoursef, inevitably, the *second* person to use it would find all the  
places where you assumed that something would work.


And..
right now, I believe Flexradio has a "no new features" sort of policy  
in place while they try and get to the 2.0 revision.



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Re: [Flexradio] SDR-1000 PowerSDR v1.12.1 with dedicated I/Q settings per each band

[Cecil Bayona]

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ray, K9DUR
Sent: Sunday, August 03, 2008 3:14 PM
To: [EMAIL PROTECTED]; 'Edwin Marzan'; 'FlexRadio biz'; 'Christos Nikolaou'
Subject: Re: [Flexradio] SDR-1000 PowerSDR v1.12.1 with dedicated I/Q
settings per each band

Christos,

You wrote, "But a major feature like dedicated image rejection per band is
still missing. Maybe it takes a big effort to find  the lines in the code
that exclude sdr1k."

Apparently you missed the post from Gerald, K5SDR, (the president of
FlexRadio Systems) where he explained that performing a separate image
rejection calibration per band was NOT a software issue, but a limitation of
the hardware in the SDR-1000.

The Flex-5000 has this feature because of built-in test generators that make
this function possible.  To do an image rejection calibration on any band on
the SDR-1000 requires an external signal source of some type.

FlexRadio has continuously stated that they intend to continue supporting
the SDR-1000 into the foreseeable future WITHIN THE LIMITATIONS OF THE
HARDWARE UTILIZED IN THE SDR-1000.

IF the hardware isn't there to support it, then the software can't fix it!

73, Ray, K9DUR

I have this feeling that neither side is listening to the other.

Correct me if I'm wrong but what is being asked is not Automatic correction
for each band, but just the ability to remember the correction for each band
individually. A SDR user will have to go to each band and provide a signal
source and calibrate the phase and amplitude settings, but it would be
really nice if when you switch between bands it would look up the
appropriate corrections for that band and apply them. This is not rocket
science, even the Rocky software has that feature.

Cecil
k5nwa
www.softrockradio.org www.smallcpu.org www.qrpradio.org
"Blessed are the cracked for they shall let the light in."




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Re: [Flexradio] SDR-1000 PowerSDR v1.12.1 with dedicated I/Q settings per each band

[Ray, K9DUR]

Christos,

You wrote, "But a major feature like dedicated image rejection per band is
still missing. Maybe it takes a big effort to find  the lines in the code
that exclude sdr1k."

Apparently you missed the post from Gerald, K5SDR, (the president of
FlexRadio Systems) where he explained that performing a separate image
rejection calibration per band was NOT a software issue, but a limitation of
the hardware in the SDR-1000.

The Flex-5000 has this feature because of built-in test generators that make
this function possible.  To do an image rejection calibration on any band on
the SDR-1000 requires an external signal source of some type.

FlexRadio has continuously stated that they intend to continue supporting
the SDR-1000 into the foreseeable future WITHIN THE LIMITATIONS OF THE
HARDWARE UTILIZED IN THE SDR-1000.

IF the hardware isn't there to support it, then the software can't fix it!

73, Ray, K9DUR



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Re: [Flexradio] SDR-1000 PowerSDR v1.12.1 with dedicated I/Q settings per each band

[Christos]

Gerald Youngblood wrote:
> Dear Chris,
>
> With respect, I must say that your statement below is simply false.  We make
> a significant investment in PowerSDR software development, which includes
> ongoing support for the SDR-1000.  We receive NO ongoing revenue from from
> any of our existing customers to help pay for support and improvements.  New
> FLEX-5000 sales pay for the free improvements that you and our other
> customers receive on a daily basis through the SVN.


Dear Gerald,
I have the sense that software improvements is a commitment from 
FlexRadio and it is included in your old motto: "The radio that keeps 
getting better".


> With regard to RX and TX image calibration by band, the FLEX-5000 has built
> in test equipment (BITE).  The SDR-1000 simply does not.  To do the
> calibration by band on the SDR-1000, we would need to automate through
> software an external spectrum analyzer and signal generator using a GPIB
> interface.  Even on Ebay, the test equipment to do that would cost at least
> $5000.  The software work to do that would be costly as well.  There is
> simply not a practical or cost effective way to do this on the SDR-1000.
>   



I consider per band image calibration a major feature and certainly you 
don't need to have BITE in the sdr1k for this purpose. The least one 
needs is just a second tranceiver and the permission  from  the software 
(PowerSDR) to let you store different settings for each band. It is that 
simple.



> FlexRadio has made a long term commitment to support the SDR-1000 in future
> software architectures.  This means only cost to FlexRadio and not revenue.
> That means that SDR-1000 and FLEX-5000 owners will continue get new features
> and even performance enhancements at no cost. 

I agree on that.

>  I don't think you will find that commitment coming from any of the guys 
> across the Pacific.
>   


That's why I am demanding from FlexRadio.


> There is an old saying that goes, "Don't look a gift horse in the mouth 
> because..."  
>   


A horse with rotten teeth is completely useless even as a gift, so a 
look in its mouth is mandatory.

And please consider my comments as well-intentioned.

73 de Chris (sv1fxo)

> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Christos
> Sent: Friday, August 01, 2008 2:50 AM
> To: flexradio@flex-radio.biz
> Subject: [Flexradio] SDR-1000 PowerSDR v1.12.1 with dedicated I/Q settings
> per each band
>
>   First of all, dedicated Tx & Rx image calibration for each band is only a
> software issue.
> I believe that Flex Radio deliberately didn't implement this feature to the
> sdr1k for the favor of the flex5k.
> Sdr1k although innovative now it's an abandoned project on both hardware and
> software sides.
> Maybe some day the same will happen to the flex5k too.
>   Christos (sv1eia) thanks a lot for your help.
>
> 73 to all de Chris (sv1fxo)
>
>
>
>
> Hi,
>
> Some time ago a friend of mine that has an SDR-1000 asked me how difficult
> is it to have specific image rejection settings per each band like the
> Flex-5000 has.
>
> After some code searching I came up with a solution to his request so
> separate settings of phase,gain on rx and tx per each band will be available
> to his SDR-1000.
>
> I do not knkow if this is of use to you, but I did send a post to the Flex
> guys here and did not got back a reply.
> Anyway, I have a svn already in Google Code so if someone wants it here is
> the installation file with the latest updates based on PowerSDR v1.12.1
>
> -> http://powersdr-iq.googlecode.com/files/PowerSDR%20Setup.msi
>
> Also the source of this build for examination if Flex coders want it is
> under "Flex" branch.
>
> Since this work has been done for one SDR-1000 user, I guess it is good for
> others to enjoy it freely too.
>
>
> 73
> Christos SV1EIA
>
>
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> http://www.flex-radio.com/
>
>
>
>   


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Re: [Flexradio] SDR-1000 PowerSDR v1.12.1 with dedicated I/Q settings per each band

[Edwin Marzan]

Cristos,
 
There will always be something that you like about a product and things that 
you will not like. You have to weigh the good and the bad and then decide for 
yourself. I'm happy with the way my radio works and the current state of the 
software development. As far as I'm concerned the company has lived up to its 
obligation. I can live without "dedicated image rejection per band". I trust 
that if the folks at Flex intend for SDR1000 users to have this capability they 
will implement it when it becomes feasible. Implementing and testing new 
features cost lots of money. I believe the folks at Flex have a staff of paid 
programmers (and some volunteers) who are working very hard on making 
improvements to PowerSDR and the company has the right to address issues and 
allocate resources to that which they feel need immediate attention. Moving 
code from one build to another is not as simple as you think.
 
If the company made one improvement to the software each year they would still 
be living up to their obligation. Instead they chose to do hundreds of 
improvements per year.
 
The glass is either half full or half empty. I see mine as overflowing!!
 
Be patient and enjoy your radio!
 
 
Edwin MarzanAB2VW
 
 
 
 
> Date: Sun, 3 Aug 2008 20:32:56 +0300> From: [EMAIL PROTECTED]> To: [EMAIL 
> PROTECTED]; flexradio@flex-radio.biz; [EMAIL PROTECTED]> Subject: Re: 
> [Flexradio] SDR-1000 PowerSDR v1.12.1 with dedicated I/Q settings per each 
> band> > Edwin Marzan wrote:> > Cristos,> > > > The Flex email reflector is a 
> wonderful thing. Even when you want to > > make ridiculous comments with no 
> basis in fact. > I agree 1000 %.> > I am interested in how you arrived at 
> this conclusion.> Read my first message once more.> > > This so called 
> "abandoned project" just received a major overhaul from > > the company via 
> software and if you've been following the email > > threads you will see that 
> the new architecture, which is a tremendous > > undertaking by the company, 
> will work with the SDR1000 for the > > forseeable future. > But a major 
> feature like dedicated image rejection per band is still > missing. Maybe it 
> takes a big effort to find the lines in the code that > exclude sdr1k.> > The 
> company still offers support for the SDR1000 but no longer > > manufactures 
> them. > I think that this is an obligation of every company all over the 
> world.> > When you get a chance send us a list of all the companies out there 
> > > who offer this type of support for discontinued models so that we can > > 
> compare notes. I would love to see what you come up with.> I am just an end 
> user so don't expect me to make out such a list. Please > ask an expert.> 
_
Get Windows Live and get whatever you need, wherever you are.  Start here.
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Re: [Flexradio] SGC-500

[K6JEK]

Actually, the CURR trip can be caused by a variety of conditions.
Low voltage is certainly one of them.  I have gone 9 rounds with CURR  
tripping on my multiple SGC 500's (I have three now).

Things that I've found will make the CURR fault occur:

1) Low voltage.   There is a LOW VOLTAGE fault which I've never  
seen.  Instead, CURR trips.  I did the same thing Harry did.  I have  
two amps powered by three of the SGC unregulated supplies with an  
additional 3.5 farads of capacitance right at the amps.  This  
necessitated a step start on the power supply AC mains.   But Richard  
is using a battery.   If he's using big wires, that should cover it.   
Richard:  Use ridiculous wires  (#4) or do what Harry and I have  
done.  Add a big cap right at the amp.

2) Auto keying.   The SGC will key itself when it sees RF.   I used  
one this way for years on AM.  When I started using it for SSB, by  
the end of any of our hours-long rag chews, the chance that this  
thing had taken itself off line (in the basement where I can't see  
it) was at least 50%.  When I changed to feeding it a PTT signal as  
SGC recommends, that problem went substantially away

3) Switch bounce or relay bounce on the PTT line.  Here's where SGC  
thinks I'm nuts.  But look at the schematic.  There is absolutely no  
de-bounce on the PTT line that goes directly into the uP.   At the  
suggestion of Mr Homebrew (Rod, KQ6F), I put a couple of caps across  
the PTT line (big || little) and the problem was gone entirely.

4) Imbalance in the four parallel RF amps that are combined for RF  
out.  You are up the creek if this happens.   SGC insists that it  
takes a special set-up that they have and you don't to adjust the  
balance between the RF sections.  I always suspected this problem but  
don't think I ever hit it.

5) A blue moon in the month of July.   Just don't operate when this  
occurs.

I've never keyed directly from the Flex, always with an intervening  
relay so I can't comment on that.

Jon




On Aug 3, 2008, at 10:55 AM, Harry Hahn wrote:

> I use an SGC 500 as one of my amps, driven by the 5000. With 30  
> watts in you should have full output. Your problem when you trip  
> the curent protection is actually low voltage. You have to read  
> peak voltage across the power in terminals of the amp. I placed a 1  
> ferad capacitor that has a digital colt meter on it across the SGC  
> power input terminals. This got rid of the problem and gives you a  
> cool voltage monitor. I use a 30 amp switching supply and 800 amp  
> battery as a power source. The problem is the 9 feet of cable to  
> the amp and the large cap removes that issue. The actual PEP output  
> I have is 660 watts on almost all bands.
>
> Harry
> W9BR
>
> Sent from my BlackBerry® smartphone with SprintSpeed
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[Flexradio] SGC-500

[Harry Hahn]

I use an SGC 500 as one of my amps, driven by the 5000. With 30 watts in you 
should have full output. Your problem when you trip the curent protection is 
actually low voltage. You have to read peak voltage across the power in 
terminals of the amp. I placed a 1 ferad capacitor that has a digital colt 
meter on it across the SGC power input terminals. This got rid of the problem 
and gives you a cool voltage monitor. I use a 30 amp switching supply and 800 
amp battery as a power source. The problem is the 9 feet of cable to the amp 
and the large cap removes that issue. The actual PEP output I have is 660 watts 
on almost all bands. 

Harry 
W9BR

Sent from my BlackBerry® smartphone with SprintSpeed
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Re: [Flexradio] SDR-1000 PowerSDR v1.12.1 with dedicated I/Q settings per each band

[Christos]

Edwin Marzan wrote:
> Cristos,
>  
> The Flex email reflector is a wonderful thing. Even when you want to 
> make ridiculous comments with no basis in fact. 
I agree 1000 %.
> I am interested in how you arrived at this conclusion.
Read my first message once more.

> This so called "abandoned project" just received a major overhaul from 
> the company via software and if you've been following the email 
> threads you will see that the new architecture, which is a tremendous 
> undertaking by the company, will work with the SDR1000 for the 
> forseeable future. 
But a major feature like dedicated image rejection per band is still 
missing. Maybe it takes a big effort to find  the lines in the code that 
exclude sdr1k.
> The company still offers support for the SDR1000 but no longer 
> manufactures them. 
I think that this is an obligation of every company all over the world.
> When you get a chance send us a list of all the companies out there 
> who offer this type of support for discontinued models so that we can 
> compare notes. I would love to see what you come up with.
I am just an end user so don't expect me to make out such a list. Please 
ask an expert.

> > Date: Fri, 1 Aug 2008 10:50:06 +0300
> > From: [EMAIL PROTECTED]
> > To: flexradio@flex-radio.biz
> > Subject: [Flexradio] SDR-1000 PowerSDR v1.12.1 with dedicated I/Q 
> settings per each band
> >
> > First of all, dedicated Tx & Rx image calibration for each band is 
> only a software issue.
> > I believe that Flex Radio deliberately didn't implement this feature 
> to the sdr1k for the favor of the flex5k.
> > Sdr1k although innovative now it's an abandoned project on both 
> hardware and software sides.
> > Maybe some day the same will happen to the flex5k too.
> > Christos (sv1eia) thanks a lot for your help.
> >
> > 73 to all de Chris (sv1fxo)
> >
> >
> >
> >
> > Hi,
> >
> > Some time ago a friend of mine that has an SDR-1000 asked me how 
> difficult
> > is it to have specific image rejection settings per each band like the
> > Flex-5000 has.
> >
> > After some code searching I came up with a solution to his request so
> > separate settings of phase,gain on rx and tx per each band will be 
> available
> > to his SDR-1000.
> >
> > I do not knkow if this is of use to you, but I did send a post to 
> the Flex
> > guys here and did not got back a reply.
> > Anyway, I have a svn already in Google Code so if someone wants it 
> here is
> > the installation file with the latest updates based on PowerSDR v1.12.1
> >
> > -> http://powersdr-iq.googlecode.com/files/PowerSDR%20Setup.msi
> >
> > Also the source of this build for examination if Flex coders want it is
> > under "Flex" branch.
> >
> > Since this work has been done for one SDR-1000 user, I guess it is 
> good for
> > others to enjoy it freely too.
> >
> >
> > 73
> > Christos SV1EIA
> >
> >
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> > Knowledge Base: http://kb.flex-radio.com/ Homepage: 
> http://www.flex-radio.com/
> >
>
>
> 
> With Windows Live for mobile, your contacts travel with you. Connect 
> on the go. 
> 


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