[Flexradio] Vista and VAC

[Ross]

Just  a note, for anyone installing VAC on a Vista Machine.

You need full administrator privileges or else VAC wont load properly.

Regards to all
Ross
ZL1WN

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Re: [Flexradio] any news from Visalia ?

[Marty]

I have a friend that went today, Saturday, and told me on the phone 
that there was a huge crowd around the Flex booth.  That was all I heard.

The only other buzz was, when is BS4H getting on the air?

Marty
KG6QKJ


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Re: [Flexradio] New "FLEX-5000" from Visalia!!!

[Brian Moran]

I have some pictures (I'm here in Visalia, too!) on http://www.n9adg.com
  -Brian N9ADG
  

jim davis <[EMAIL PROTECTED]> wrote:
  Ken-N9VV,

As I type we are here in rather WARM Visalia!!! (SA 28, 2007 @ 2347Z)

The spec. event station is only being run via the OLDER SDR-1000, in the exibit 
hall there are (2) 
prototypes of the 5000, but a few more bugs have to be ironed out of the protos 
before mass 
production begins with a tentative target date of late June-07!!!

So we'll all have to be a little bit more patient (ugh!) before the PRE-ORDERS 
ARE FULFILLED!!!




Best Regards,

Jim Davis/nn6ee

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[Flexradio] New "FLEX-5000" from Visalia!!!

[jim davis]

Ken-N9VV,

As I type we are here in rather WARM Visalia!!!   (SA 28, 2007 @ 2347Z)

The spec. event station is only being run via the OLDER SDR-1000, in the exibit 
hall there are (2) 
prototypes of the 5000, but a few more bugs have to be ironed out of the protos 
before mass 
production begins with a tentative target date of late June-07!!!

So we'll all have to be a little bit more patient (ugh!) before the PRE-ORDERS 
ARE FULFILLED!!!




Best Regards,

Jim Davis/nn6ee

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[Flexradio] any news from Visalia ?

[Ken N9VV]

Anyone heard the FLEX-5000 on the air? anyone at Visalia that can 
give us a digi pix of the booth? comments from Visalia?

TU de ken n9vv

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Re: [Flexradio] RX (SW) vs. RX (HW)

[petervn]

Hi Lee
 
As I did not read anny sugestions for th streams, It seems you can define your 
own.
Personaly I find "analogue stream equivalent" not verry usefull as it is as far 
as I am aware
a digital stream.
Good luck 73
 
groeten Peter
petervn(a)hetnet.nl <mailto:[EMAIL PROTECTED]>  ; pa0pvn(a)hetnet.nl 
<mailto:[EMAIL PROTECTED]>   ;
pa0pvn(a)gmail.com ; pa0pvn(a)amsat.org .
 



Van: [EMAIL PROTECTED] namens Lee A Crocker
Verzonden: do 26-4-2007 22:44
Aan: Flexradio
Onderwerp: Re: [Flexradio] RX (SW) vs. RX (HW)



Jim

I would be interested in hearing more about the proper nomenclature to describe 
the signal path in a SDR.  I think this might be the key to being able to 
adequately describe in simple terms to the average ham how a SDR works.  I have 
been writing some stuff to try and delineate this for myself, and I come up 
short mostly because I don't have a precisely developed language.  I understand 
conceptually the path but in reality it is pretty complex because you keep 
changing frame from RF to sample to digital in hardware then to software 
manipulation then back to something analogue, or you may take the "analogue 
stream equivalent" and send it down VAC to another program as to a PSK31 
program etc.  

73  W9OY



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Re: [Flexradio] PowerSDR filter shape factor?

[Frank Brickle]

On 4/28/07, Robert McGwier <[EMAIL PROTECTED]> wrote:
>
> We use Blackman-Harris windows for all the right reasons as the window
> in the filter design.  We care about the ultimate out of band rejection...


The only place I'd take exception to this is where you might not necessarily
want the steepest rolloff possible.

For example, with SSB signals crowded together like in a contest, you can't
filter out QRM from a nearby signal without also destroying intelligibility
in the signal of interest. In a situation like that, having variable rolloff
gives you an extra degree of freedom in reducing the QRM without killing the
signal you want.

Anyway, the control is potentially there, even if you don't need to care
about it most of the time.

73
Frank
AB2KT
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Re: [Flexradio] PowerSDR filter shape factor?

[Tim Ellison]

Bob,

Thanks for teaching me how to fish!  It is time to go dig up some worms.



-Tim
-


-Original Message-
From: Robert McGwier [mailto:[EMAIL PROTECTED] 
Sent: Saturday, April 28, 2007 2:23 PM
To: Frank Brickle
Cc: Tim Ellison; Flex Radio
Subject: Re: [Flexradio] PowerSDR filter shape factor?

We use Blackman-Harris windows for all the right reasons as the window
in the filter design.  We care about the ultimate out of band rejection,
and this can only be accomplished by a (VERY SMALL) sacrifice in shape 
factor.These filters in their worst case,  192000 samples per second

and DSP set to 512 sample buffers,  BETTER than can be had with any
traditional analog filtering system.


This is easy for you to do yourself.

Set display to spectrum.  Set filter size.  Go to Setup panel and test
tab and turn on the noise generator and select input. This will run
white noise into the receiver and you can measure the filter shape
DIRECTLY and capture screen shots to demonstrate the filter shape.

Frankly, we are just too covered up with other work to do this now. But
it is easy to do.

Bob



Frank Brickle wrote:
> The problem with measuring the shape factor is that it can be changed 
> significantly by applying a different window in the filter design 
> code. The measured shape is a snapshot of one possible configuration. 
> It's a tunable parameter, however, even if it hasn't been brought out
to the "front panel"
> yet.
> 
> 73
> Frank
> AB2KT
> 
> On 4/28/07, Tim Ellison <[EMAIL PROTECTED]> wrote:
>>  I have a grasp on the math, I an need some "real" numbers (measured)

>> to fill in a product comparison of the Flex-500 vs.. it's 
>> competition.  I found some references in a few e-mail that are about
1.5 years old.
>>
>> -Tim
>>
>> -
>>
>> Integrated Technical Services
>>
>>
>>  --
>> *From:* [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] *On 
>> Behalf Of *Frank Brickle
>> *Sent:* Saturday, April 28, 2007 12:40 PM
>> *To:* Tim Ellison
>> *Cc:* flexradio@flex-radio.biz
>> *Subject:* Re: [Flexradio] PowerSDR filter shape factor?
>>
>> On 4/28/07, Tim Ellison <[EMAIL PROTECTED]> wrote:
>>> On the web page, it states that the filter shape factor for a 500 Hz

>>> filter is 1.35:1 and a 2.6 KHz filter is 1.06:1.  But I believe that

>>> these values were taken at 48K sampling rate with a 1024 DSP filter.
>>>
>>> I don't have a scope or a signal generator to check this, so I am 
>>> asking
>>>
>>> if anyone has done (or would consider doing) an analysis of the 
>>> filter shape factor with different DSP buffer sizes and sampling 
>>> rates?  I would be very interested in seeing how the shape factor 
>>> varies with these parameters at a 500 Hz and 2.6 KHz filter width?
>>
>>
>> The shape factor is proportional to the sample rate divided by the 
>> filter length. If you double the sample rate but keep the filter 
>> length the same, the shape factor goes up. If you keep the sample 
>> rate the same but double the filter length, the shape factor goes 
>> down. The reason I only say proportional is that what changes the 
>> most in this picture is the transition bandwidth.
>>
>> The back of the envelope here says, at 48kHz, difference between 
>> 1.35:1 at 500Hz and 1.06:1 at 2.6kHz is about 30Hz in the transition
bands at -60dB.
>> Not much.
>>
>> The rule of thumb is, for a given shape factor, if you double the 
>> sample rate, you need to double the filter length to keep the same
shape factor.
>>
>> 73
>> Frank
>> AB2KT
>>
>>
>>
>>
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--
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 filter shape factor?

[Robert McGwier]

We use Blackman-Harris windows for all the right reasons as the window 
in the filter design.  We care about the ultimate out of band rejection, 
and this can only be accomplished by a (VERY SMALL) sacrifice in shape 
factor.These filters in their worst case,  192000 samples per second 
and DSP set to 512 sample buffers,  BETTER than can be had with any 
traditional analog filtering system.


This is easy for you to do yourself.

Set display to spectrum.  Set filter size.  Go to Setup panel and test 
tab and turn on the noise generator and select input. This will run 
white noise into the receiver and you can measure the filter shape 
DIRECTLY and capture screen shots to demonstrate the filter shape.

Frankly, we are just too covered up with other work to do this now. But 
it is easy to do.

Bob



Frank Brickle wrote:
> The problem with measuring the shape factor is that it can be changed
> significantly by applying a different window in the filter design code. The
> measured shape is a snapshot of one possible configuration. It's a tunable
> parameter, however, even if it hasn't been brought out to the "front panel"
> yet.
> 
> 73
> Frank
> AB2KT
> 
> On 4/28/07, Tim Ellison <[EMAIL PROTECTED]> wrote:
>>  I have a grasp on the math, I an need some "real" numbers (measured) to
>> fill in a product comparison of the Flex-500 vs.. it's competition.  I found
>> some references in a few e-mail that are about 1.5 years old.
>>
>> -Tim
>>
>> -
>>
>> Integrated Technical Services
>>
>>
>>  --
>> *From:* [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] *On
>> Behalf Of *Frank Brickle
>> *Sent:* Saturday, April 28, 2007 12:40 PM
>> *To:* Tim Ellison
>> *Cc:* flexradio@flex-radio.biz
>> *Subject:* Re: [Flexradio] PowerSDR filter shape factor?
>>
>> On 4/28/07, Tim Ellison <[EMAIL PROTECTED]> wrote:
>>> On the web page, it states that the filter shape factor for a 500 Hz
>>> filter is 1.35:1 and a 2.6 KHz filter is 1.06:1.  But I believe that
>>> these values were taken at 48K sampling rate with a 1024 DSP filter.
>>>
>>> I don't have a scope or a signal generator to check this, so I am asking
>>>
>>> if anyone has done (or would consider doing) an analysis of the filter
>>> shape factor with different DSP buffer sizes and sampling rates?  I
>>> would be very interested in seeing how the shape factor varies with
>>> these parameters at a 500 Hz and 2.6 KHz filter width?
>>
>>
>> The shape factor is proportional to the sample rate divided by the filter
>> length. If you double the sample rate but keep the filter length the same,
>> the shape factor goes up. If you keep the sample rate the same but double
>> the filter length, the shape factor goes down. The reason I only say
>> proportional is that what changes the most in this picture is the transition
>> bandwidth.
>>
>> The back of the envelope here says, at 48kHz, difference between 1.35:1 at
>> 500Hz and 1.06:1 at 2.6kHz is about 30Hz in the transition bands at -60dB.
>> Not much.
>>
>> The rule of thumb is, for a given shape factor, if you double the sample
>> rate, you need to double the filter length to keep the same shape factor.
>>
>> 73
>> Frank
>> AB2KT
>>
>>
>>
>>
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-- 
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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 filter shape factor?

[Frank Brickle]

The problem with measuring the shape factor is that it can be changed
significantly by applying a different window in the filter design code. The
measured shape is a snapshot of one possible configuration. It's a tunable
parameter, however, even if it hasn't been brought out to the "front panel"
yet.

73
Frank
AB2KT

On 4/28/07, Tim Ellison <[EMAIL PROTECTED]> wrote:
>
>  I have a grasp on the math, I an need some "real" numbers (measured) to
> fill in a product comparison of the Flex-500 vs.. it's competition.  I found
> some references in a few e-mail that are about 1.5 years old.
>
> -Tim
>
> -
>
> Integrated Technical Services
>
>
>  --
> *From:* [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] *On
> Behalf Of *Frank Brickle
> *Sent:* Saturday, April 28, 2007 12:40 PM
> *To:* Tim Ellison
> *Cc:* flexradio@flex-radio.biz
> *Subject:* Re: [Flexradio] PowerSDR filter shape factor?
>
> On 4/28/07, Tim Ellison <[EMAIL PROTECTED]> wrote:
> >
> > On the web page, it states that the filter shape factor for a 500 Hz
> > filter is 1.35:1 and a 2.6 KHz filter is 1.06:1.  But I believe that
> > these values were taken at 48K sampling rate with a 1024 DSP filter.
> >
> > I don't have a scope or a signal generator to check this, so I am asking
> >
> > if anyone has done (or would consider doing) an analysis of the filter
> > shape factor with different DSP buffer sizes and sampling rates?  I
> > would be very interested in seeing how the shape factor varies with
> > these parameters at a 500 Hz and 2.6 KHz filter width?
>
>
>
> The shape factor is proportional to the sample rate divided by the filter
> length. If you double the sample rate but keep the filter length the same,
> the shape factor goes up. If you keep the sample rate the same but double
> the filter length, the shape factor goes down. The reason I only say
> proportional is that what changes the most in this picture is the transition
> bandwidth.
>
> The back of the envelope here says, at 48kHz, difference between 1.35:1 at
> 500Hz and 1.06:1 at 2.6kHz is about 30Hz in the transition bands at -60dB.
> Not much.
>
> The rule of thumb is, for a given shape factor, if you double the sample
> rate, you need to double the filter length to keep the same shape factor.
>
> 73
> Frank
> AB2KT
>
>
>
>
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Re: [Flexradio] PowerSDR filter shape factor?

[Charles Greene]

Tim,

It probably is at 48000 s/s and a 4096 buffer.  I did some work on 
measuring filters earlier.  If you like, I will email you a copy of 
Spectrogram 5.7 which is the last free program, and you can verify 
it.  It works well with VAC 4.x

Chas, WiCG

At 11:25 AM 4/28/2007, Tim Ellison wrote:
>On the web page, it states that the filter shape factor for a 500 Hz
>filter is 1.35:1 and a 2.6 KHz filter is 1.06:1.  But I believe that
>these values were taken at 48K sampling rate with a 1024 DSP filter.
>
>I don't have a scope or a signal generator to check this, so I am asking
>if anyone has done (or would consider doing) an analysis of the filter
>shape factor with different DSP buffer sizes and sampling rates?  I
>would be very interested in seeing how the shape factor varies with
>these parameters at a 500 Hz and 2.6 KHz filter width?
>
>-Tim, W4TME
>-
>
>
>
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Re: [Flexradio] PowerSDR filter shape factor?

[Frank Brickle]

On 4/28/07, Tim Ellison <[EMAIL PROTECTED]> wrote:
>
> On the web page, it states that the filter shape factor for a 500 Hz
> filter is 1.35:1 and a 2.6 KHz filter is 1.06:1.  But I believe that
> these values were taken at 48K sampling rate with a 1024 DSP filter.
>
> I don't have a scope or a signal generator to check this, so I am asking
> if anyone has done (or would consider doing) an analysis of the filter
> shape factor with different DSP buffer sizes and sampling rates?  I
> would be very interested in seeing how the shape factor varies with
> these parameters at a 500 Hz and 2.6 KHz filter width?



The shape factor is proportional to the sample rate divided by the filter
length. If you double the sample rate but keep the filter length the same,
the shape factor goes up. If you keep the sample rate the same but double
the filter length, the shape factor goes down. The reason I only say
proportional is that what changes the most in this picture is the transition
bandwidth.

The back of the envelope here says, at 48kHz, difference between 1.35:1 at
500Hz and 1.06:1 at 2.6kHz is about 30Hz in the transition bands at -60dB.
Not much.

The rule of thumb is, for a given shape factor, if you double the sample
rate, you need to double the filter length to keep the same shape factor.

73
Frank
AB2KT
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[Flexradio] PowerSDR filter shape factor?

[Tim Ellison]

On the web page, it states that the filter shape factor for a 500 Hz
filter is 1.35:1 and a 2.6 KHz filter is 1.06:1.  But I believe that
these values were taken at 48K sampling rate with a 1024 DSP filter.

I don't have a scope or a signal generator to check this, so I am asking
if anyone has done (or would consider doing) an analysis of the filter
shape factor with different DSP buffer sizes and sampling rates?  I
would be very interested in seeing how the shape factor varies with
these parameters at a 500 Hz and 2.6 KHz filter width? 

-Tim, W4TME
-



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[Flexradio] 2007/Apr/28 TeamSpeak audio

[Mike Naruta]

The 28/April Flex Radio TeamSpeak audio
mp3 zipped file is available at:


< http://www.hamsdr.com/personaldirectory.aspx?id=553 >

or

< http://www.hamsdr.com/dnld.aspx >



Mike - AA8K




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Re: [Flexradio] Was about Mirror image, not it's about loose connector

[Bob Tracy]

Look at http://www.km0t.com/pages/sdr.htm about 2/3's down the page.  Nice
mod.

73 Bob K5KDN

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED]
Sent: Saturday, April 28, 2007 7:42 AM
To: Lawrence Groom; flexradio@flex-radio.biz
Subject: Re: [Flexradio] Was about Mirror image,not it's about loose
connector


There is someone that has changed the lousy
3.5 mm plugs, do not have it on hand on this computer,
He put the inside print of de D44's break out box inside
the sdr1k's housing.
Others use some contactgrease, must be in knowledge base
no time at this moment to look it up for you
try google internet for modification sdr1000
73

groeten Peter
petervn(a)hetnet.nl   ; pa0pvn(a)hetnet.nl
   ;
pa0pvn(a)gmail.com ; pa0pvn(a)amsat.org .




Van: [EMAIL PROTECTED] namens Lawrence Groom
Verzonden: do 26-4-2007 17:03
Aan: flexradio@flex-radio.biz
Onderwerp: [Flexradio] Was about Mirror image, not it's about loose
connector




Thanks to all who replied to my issue about the mirror images I was
hearing and
seeing. I have reseated the TO Line in and it seems to help. (I also
recalibrated the
RX image) BUT it doesn't seem to last. The jack on the back of the
radio where the
TO Line in plugs in seems a little loose, ie not a "firm feeling"
when plugging in the
cable. Has anyone else had this issue and if so how did you correct
it. I'm thinking
of taking the cover off and see if there is a way to "solidify" the
connection

73'  Larry W0FLY

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Re: [Flexradio] Was about Mirror image, not it's about loose connector

[Tim Ellison]

You are referring to DeoxIT and DeoxIT Gold (ProGold).  Both are great
products. Below is a review.

http://www.soundonsound.com/sos/aug98/articles/bencounters.html?print=ye
s 

Here is the company URL
http://www.deoxit.com/


-Tim, W4TME

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
Sent: Saturday, April 28, 2007 8:42 AM
To: Lawrence Groom; flexradio@flex-radio.biz
Subject: Re: [Flexradio] Was about Mirror image,not it's about loose
connector

There is someone that has changed the lousy
3.5 mm plugs, do not have it on hand on this computer, He put the inside
print of de D44's break out box inside the sdr1k's housing.
Others use some contactgrease, must be in knowledge base no time at this
moment to look it up for you try google internet for modification
sdr1000
73
 
groeten Peter
petervn(a)hetnet.nl <mailto:[EMAIL PROTECTED]>  ; pa0pvn(a)hetnet.nl
<mailto:[EMAIL PROTECTED]>   ;
pa0pvn(a)gmail.com ; pa0pvn(a)amsat.org .
 



Van: [EMAIL PROTECTED] namens Lawrence Groom
Verzonden: do 26-4-2007 17:03
Aan: flexradio@flex-radio.biz
Onderwerp: [Flexradio] Was about Mirror image, not it's about loose
connector



   
Thanks to all who replied to my issue about the mirror images I was
hearing and seeing. I have reseated the TO Line in and it seems to help.
(I also recalibrated the RX image) BUT it doesn't seem to last. The jack
on the back of the radio where the TO Line in plugs in seems a little
loose, ie not a "firm feeling" 
when plugging in the
cable. Has anyone else had this issue and if so how did you correct it.
I'm thinking of taking the cover off and see if there is a way to
"solidify" the connection

73'  Larry W0FLY

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http://www.flex-radio.com/



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Re: [Flexradio] Was about Mirror image, not it's about loose connector

[petervn]

There is someone that has changed the lousy
3.5 mm plugs, do not have it on hand on this computer,
He put the inside print of de D44's break out box inside
the sdr1k's housing.
Others use some contactgrease, must be in knowledge base
no time at this moment to look it up for you
try google internet for modification sdr1000
73
 
groeten Peter
petervn(a)hetnet.nl <mailto:[EMAIL PROTECTED]>  ; pa0pvn(a)hetnet.nl 
<mailto:[EMAIL PROTECTED]>   ;
pa0pvn(a)gmail.com ; pa0pvn(a)amsat.org .
 



Van: [EMAIL PROTECTED] namens Lawrence Groom
Verzonden: do 26-4-2007 17:03
Aan: flexradio@flex-radio.biz
Onderwerp: [Flexradio] Was about Mirror image, not it's about loose connector



   
Thanks to all who replied to my issue about the mirror images I was 
hearing and
seeing. I have reseated the TO Line in and it seems to help. (I also 
recalibrated the
RX image) BUT it doesn't seem to last. The jack on the back of the 
radio where the
TO Line in plugs in seems a little loose, ie not a "firm feeling" 
when plugging in the
cable. Has anyone else had this issue and if so how did you correct 
it. I'm thinking
of taking the cover off and see if there is a way to "solidify" the 
connection

73'  Larry W0FLY

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Re: [Flexradio] 5000

[Lee A Crocker]

You must be in Miami

I can run 2 instances of the PowerSDR on a 2gig single core processor with a 
whole bunch of other programs and still get under 40% on the CPU.



__
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Re: [Flexradio] [dttsp-linux] FCC new output on Cognitive Radio

[petervn]

What if someone uses a good old oscillator to do it???
just a thought (sorry for spelling)
73 peter pa0pvn
 
groeten Peter
petervn(a)hetnet.nl <mailto:[EMAIL PROTECTED]>  ; pa0pvn(a)hetnet.nl 
<mailto:[EMAIL PROTECTED]>   ;
pa0pvn(a)gmail.com ; pa0pvn(a)amsat.org .
 



Van: [EMAIL PROTECTED] namens k5nwa
Verzonden: vr 27-4-2007 16:39
Aan: Flex Radio
Onderwerp: Re: [Flexradio] [dttsp-linux] FCC new output on Cognitive Radio



I'm aware that it's exempt for Ham use, but then some person out
there will figure out it can be used anywhere.

Just a though, since I'm sure they would love to run into a misuse of
a D/A converter so they can re-submit their application again. After
all, only professionals should be allowed to play with these thingies.

At 09:18 AM 4/27/2007, you wrote:
>>Restricting the output bands, would this be something to consider
>>with the Penelope card as a preventative measure? Worth a
>>discussion at least. The moment someone uses a Penelope to transmit
>>out of band, this issue will be re-visited.
>
>Paragraph 16 suggests that Penney is exempt, so long as it is an
>Amateur radio thingie.
>
>73,
>
>Lyle KK7P


Cecil
K5NWA
www.qrpradio.com  www.hpsdr.com

"Blessed are the cracked, for they shall let in the light."


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Re: [Flexradio] 5000

[Edwin Marzan]

Too much information Bob!

The answer to your question is "NO"



Edwin Marzan
AB2VW





>From: Robert Gibson <[EMAIL PROTECTED]>
>Reply-To: Robert Gibson <[EMAIL PROTECTED]>
>To: flexradio@flex-radio.biz
>Subject: [Flexradio] 5000
>Date: Sat, 28 Apr 2007 04:27:43 + (UTC)
>
>Hi All..Must one have a new Intel core 2 processor to
>enjoy all the features of the new radio? If this has
>been ask before SORRY..Today has been a little hard..
>For the first time in my life..I went into the women
>bathroom and set downBob for a crap..and didn't know
>that it was a women bathroom tell the fellow or women
>came out of the stall next to me..From now on I look
>at the door a little closer..But in our Lowes store in
>OKLA..The Men's room was always on the right side...
>Not the case in Florida..73s Bob
>
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>

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