Re: [Elecraft] KX3 SDR MAC

[Edouard Lafargue]

  Hi Fred,

   I realize I'm pretty late in the thread but... if you are willing to
experiment, you can check out my blog post here:
http://www.aerodynes.fr/2014/01/08/kx3-gnuradio-spectrum-visualisations/

This uses GNURadio to do really nice looking IQ spectrum visualizations
with the KX3. Runs great on the Mac but requires quite a lot of hands-on
action :)

There is also my own KX3 utility for the mac at wizkers.io/wizkersradio
which you should check out - it is open source too :)

73 de ed w6ela

On Wed, Sep 14, 2016 at 11:39 AM, Fred Moore  wrote:

> I am looking for recommendations on a good SDR application that will run
> under Mac OSX.   I also have parallels installed with a windows VM, but
> don't want anything that runs under windows..
>
> What are you Mac users using?..   Fred
>
>
> --
> Fred Moore
> WD8KNI
> email: f...@fmeco.com
>
> phone:  321-217-8699
>
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Re: [Elecraft] KX3 SDR MAC

[Phil Wheeler]

Fred,

Seems like I recently saw a lightning T-splitter 
which might work announced (related to the new 
iPhone with no headphone jack), by Belkin I 
believe. I wonder if that might be a solution to 
charging in such a situation.


OTOH -- my iPad Mini battery seems to last a very 
long time.


73, Phil W7OX

On 9/15/16 7:40 AM, Fred Moore wrote:

Michael,  I installed iSDR and ordered to lightning to USB adapter from
apple, it will be here tomorrow..  After ordering the adapter I started
wondering how to keep the iPad charged when it is powering the sound
device..  how do you make that happen, I could not find anything on the
web.  Do you know if plugging the iPad into a powered USB hub will
charge the iPad, as the iPad would be acting as a host hub..  nothing I
could find... 

regards... Fred


On 9/14/16 3:30 PM, Michael Blake wrote:

Fred, If you have the PigRemote it will serve as the RS-232 connection
from iSdr to the KX3.  If you do not then then just set the frequency
on iSdr to 0 (zero) kHz and the frequency you are tuned to will be at
center screen and other signals will be displayed as plus or minus
kHz.  It works quite well… very well actually.

I use an Apple camera adapter (lightning to usb) with a Griffin iMic
to connect from the I/Q jack on the KX3 to the iPad.  It works just as
well on the iPhone with a smaller display.

If you want other stuff like CAT, Log, LOTW support,  DX-Cluster, etc.
look at RumLog NG running on your Mac.

Michael Blake
k9...@mac.com 


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Re: [Elecraft] KX3 SDR MAC

[Brian Denley]

Plugging any iPad into a powered USB plug will actively charge the iPad 
batteries.

Brian 
KB1VBF
Sent from my iPad

> On Sep 15, 2016, at 10:40 AM, Fred Moore  wrote:
> 
> Michael,  I installed iSDR and ordered to lightning to USB adapter from
> apple, it will be here tomorrow..  After ordering the adapter I started
> wondering how to keep the iPad charged when it is powering the sound
> device..  how do you make that happen, I could not find anything on the
> web.  Do you know if plugging the iPad into a powered USB hub will
> charge the iPad, as the iPad would be acting as a host hub..  nothing I
> could find... 
> 
> regards... Fred
> 
> 
>> On 9/14/16 3:30 PM, Michael Blake wrote:
>> Fred, If you have the PigRemote it will serve as the RS-232 connection
>> from iSdr to the KX3.  If you do not then then just set the frequency
>> on iSdr to 0 (zero) kHz and the frequency you are tuned to will be at
>> center screen and other signals will be displayed as plus or minus
>> kHz.  It works quite well… very well actually.
>> 
>> I use an Apple camera adapter (lightning to usb) with a Griffin iMic
>> to connect from the I/Q jack on the KX3 to the iPad.  It works just as
>> well on the iPhone with a smaller display.
>> 
>> If you want other stuff like CAT, Log, LOTW support,  DX-Cluster, etc.
>> look at RumLog NG running on your Mac.
>> 
>> Michael Blake
>> k9...@mac.com 
>> 
>> 
>> 
>> 
>> 
>> 
>>> On Sep 14, 2016, at 3:04 PM, Fred Moore >> > wrote:
>>> 
>>> I am aware it doesn't require any SDR software, but wanted to play with
>>> some.. primary for a panadapter, without adding on a PX3..  I have not
>>> looked at iSDR for ipad will take a look at it..  thanks.. Fred
>>> 
>>> 
 On 9/14/16 2:54 PM, Michael Blake wrote:
 Fred, what is your goal?  The KX3 does not require any SDR software.
 Panadapter, try iSDR on the iPad.  If you have a PigRemote it will
 even display the KX3's frequency.  It connects to the I/Q jacks.
 
 Fill us in what functions you are looking for.
 
 Michael Blake
 k9...@mac.com  
 
 On Sep 14, 2016, at 14:39, Fred Moore >>> 
 > wrote:
 
> I am looking for recommendations on a good SDR application that
> will run
> under Mac OSX.   I also have parallels installed with a windows VM, but
> don't want anything that runs under windows..
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Re: [Elecraft] KX3 SDR MAC

[Michael Blake]

Fred, Michael Wong has the correct adapter.

73 - Mike - K9JRI






> On Sep 15, 2016, at 11:10 AM, Michael Wong  wrote:
> 
> Depends on which adapter you bought. This will allow charging and USB 3 (and 
> USB 2) passthrough:
> 
> http://www.apple.com/shop/product/MK0W2AM/A/lightning-to-usb-3-camera-adapter 
> 
> 
> Look forward to hearing how this works.
> 
> 
>> On Sep 15, 2016, at 7:40 AM, Fred Moore > > wrote:
>> 
>> Michael,  I installed iSDR and ordered to lightning to USB adapter from
>> apple, it will be here tomorrow..  After ordering the adapter I started
>> wondering how to keep the iPad charged when it is powering the sound
>> device..  how do you make that happen, I could not find anything on the
>> web.  Do you know if plugging the iPad into a powered USB hub will
>> charge the iPad, as the iPad would be acting as a host hub..  nothing I
>> could find... 
>> 
>> regards... Fred
>> 
>> 
>> On 9/14/16 3:30 PM, Michael Blake wrote:
>>> Fred, If you have the PigRemote it will serve as the RS-232 connection
>>> from iSdr to the KX3.  If you do not then then just set the frequency
>>> on iSdr to 0 (zero) kHz and the frequency you are tuned to will be at
>>> center screen and other signals will be displayed as plus or minus
>>> kHz.  It works quite well… very well actually.
>>> 
>>> I use an Apple camera adapter (lightning to usb) with a Griffin iMic
>>> to connect from the I/Q jack on the KX3 to the iPad.  It works just as
>>> well on the iPhone with a smaller display.
>>> 
>>> If you want other stuff like CAT, Log, LOTW support,  DX-Cluster, etc.
>>> look at RumLog NG running on your Mac.
>>> 
>>> Michael Blake
>>> k9...@mac.com  >> >
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
 On Sep 14, 2016, at 3:04 PM, Fred Moore >>> 
 >> wrote:
 
 I am aware it doesn't require any SDR software, but wanted to play with
 some.. primary for a panadapter, without adding on a PX3..  I have not
 looked at iSDR for ipad will take a look at it..  thanks.. Fred
 
 
 On 9/14/16 2:54 PM, Michael Blake wrote:
> Fred, what is your goal?  The KX3 does not require any SDR software.
> Panadapter, try iSDR on the iPad.  If you have a PigRemote it will
> even display the KX3's frequency.  It connects to the I/Q jacks.
> 
> Fill us in what functions you are looking for.
> 
> Michael Blake
> k9...@mac.com   > >
> 
> On Sep 14, 2016, at 14:39, Fred Moore  
> >
> >> wrote:
> 
>> I am looking for recommendations on a good SDR application that
>> will run
>> under Mac OSX.   I also have parallels installed with a windows VM, but
>> don't want anything that runs under windows..
>> 
>> What are you Mac users using?..   Fred
>> 
>> 
>> -- 
>> Fred Moore
>> WD8KNI
>> email: f...@fmeco.com  > > >
>> 
>> phone:  321-217-8699
>> 
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft 
>> 
>> Help: http://mailman.qth.net/mmfaq.htm 
>> Post: mailto:Elecraft@mailman.qth.net 
>> 
>> This list hosted by: http://www.qsl.net 
>> Please help support this email list: http://www.qsl.net/donate.html 
>> 
>> Message delivered to k9...@mac.com  
>> >
>> >
> 
> -- 
> This message has been scanned for viruses and
> dangerous content by *MailScanner*  >,
> and is
> believed to be clean.
 
 -- 
 Fred Moore
 email: f...@fmeco.com  >
  f...@safes.com  >
 phone:  321-217-8699
 
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Re: [Elecraft] KX3 SDR MAC

[Michael Wong]

Depends on which adapter you bought. This will allow charging and USB 3 (and 
USB 2) passthrough:

http://www.apple.com/shop/product/MK0W2AM/A/lightning-to-usb-3-camera-adapter 


Look forward to hearing how this works.


> On Sep 15, 2016, at 7:40 AM, Fred Moore  wrote:
> 
> Michael,  I installed iSDR and ordered to lightning to USB adapter from
> apple, it will be here tomorrow..  After ordering the adapter I started
> wondering how to keep the iPad charged when it is powering the sound
> device..  how do you make that happen, I could not find anything on the
> web.  Do you know if plugging the iPad into a powered USB hub will
> charge the iPad, as the iPad would be acting as a host hub..  nothing I
> could find... 
> 
> regards... Fred
> 
> 
> On 9/14/16 3:30 PM, Michael Blake wrote:
>> Fred, If you have the PigRemote it will serve as the RS-232 connection
>> from iSdr to the KX3.  If you do not then then just set the frequency
>> on iSdr to 0 (zero) kHz and the frequency you are tuned to will be at
>> center screen and other signals will be displayed as plus or minus
>> kHz.  It works quite well… very well actually.
>> 
>> I use an Apple camera adapter (lightning to usb) with a Griffin iMic
>> to connect from the I/Q jack on the KX3 to the iPad.  It works just as
>> well on the iPhone with a smaller display.
>> 
>> If you want other stuff like CAT, Log, LOTW support,  DX-Cluster, etc.
>> look at RumLog NG running on your Mac.
>> 
>> Michael Blake
>> k9...@mac.com 
>> 
>> 
>> 
>> 
>> 
>> 
>>> On Sep 14, 2016, at 3:04 PM, Fred Moore >> > wrote:
>>> 
>>> I am aware it doesn't require any SDR software, but wanted to play with
>>> some.. primary for a panadapter, without adding on a PX3..  I have not
>>> looked at iSDR for ipad will take a look at it..  thanks.. Fred
>>> 
>>> 
>>> On 9/14/16 2:54 PM, Michael Blake wrote:
 Fred, what is your goal?  The KX3 does not require any SDR software.
 Panadapter, try iSDR on the iPad.  If you have a PigRemote it will
 even display the KX3's frequency.  It connects to the I/Q jacks.
 
 Fill us in what functions you are looking for.
 
 Michael Blake
 k9...@mac.com  
 
 On Sep 14, 2016, at 14:39, Fred Moore >>> 
 > wrote:
 
> I am looking for recommendations on a good SDR application that
> will run
> under Mac OSX.   I also have parallels installed with a windows VM, but
> don't want anything that runs under windows..
> 
> What are you Mac users using?..   Fred
> 
> 
> -- 
> Fred Moore
> WD8KNI
> email: f...@fmeco.com  
> 
> phone:  321-217-8699
> 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
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> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to k9...@mac.com 
> 
 
 -- 
 This message has been scanned for viruses and
 dangerous content by *MailScanner* ,
 and is
 believed to be clean.
>>> 
>>> -- 
>>> Fred Moore
>>> email: f...@fmeco.com 
>>>  f...@safes.com 
>>> phone:  321-217-8699
>>> 
>>> __
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to k9...@mac.com 
>> 
>> 
>> -- 
>> This message has been scanned for viruses and
>> dangerous content by *MailScanner* , and is
>> believed to be clean. 
> 
> -- 
> Fred Moore
> email: f...@fmeco.com
>   f...@safes.com
> phone:  321-217-8699
> 
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This

Re: [Elecraft] KX3 SDR MAC

[Michael Blake]

Fred, one of the Apple lightning to USB adapters also contains a female 
Lightning connector that allows for charging/powering along with the USB 
interface.  It is called the “Lightning Digital AV Adapter” I believe.

73 - Mike - K9JRI






> On Sep 15, 2016, at 10:40 AM, Fred Moore  wrote:
> 
> Michael,  I installed iSDR and ordered to lightning to USB adapter from 
> apple, it will be here tomorrow..  After ordering the adapter I started 
> wondering how to keep the iPad charged when it is powering the sound device.. 
>  how do you make that happen, I could not find anything on the web.  Do you 
> know if plugging the iPad into a powered USB hub will charge the iPad, as the 
> iPad would be acting as a host hub..  nothing I could find... 
> 
> regards... Fred
> 
> On 9/14/16 3:30 PM, Michael Blake wrote:
>> Fred, If you have the PigRemote it will serve as the RS-232 connection from 
>> iSdr to the KX3.  If you do not then then just set the frequency on iSdr to 
>> 0 (zero) kHz and the frequency you are tuned to will be at center screen and 
>> other signals will be displayed as plus or minus kHz.  It works quite well… 
>> very well actually.
>> 
>> I use an Apple camera adapter (lightning to usb) with a Griffin iMic to 
>> connect from the I/Q jack on the KX3 to the iPad.  It works just as well on 
>> the iPhone with a smaller display.
>> 
>> If you want other stuff like CAT, Log, LOTW support,  DX-Cluster, etc. look 
>> at RumLog NG running on your Mac.
>> 
>> Michael Blake
>> k9...@mac.com 
>> 
>> 
>> 
>> 
>> 
>> 
>>> On Sep 14, 2016, at 3:04 PM, Fred Moore >> > wrote:
>>> 
>>> I am aware it doesn't require any SDR software, but wanted to play with
>>> some.. primary for a panadapter, without adding on a PX3..  I have not
>>> looked at iSDR for ipad will take a look at it..  thanks.. Fred
>>> 
>>> 
>>> On 9/14/16 2:54 PM, Michael Blake wrote:
 Fred, what is your goal?  The KX3 does not require any SDR software.
 Panadapter, try iSDR on the iPad.  If you have a PigRemote it will
 even display the KX3's frequency.  It connects to the I/Q jacks.
 
 Fill us in what functions you are looking for.
 
 Michael Blake
 k9...@mac.com  >
 
 On Sep 14, 2016, at 14:39, Fred Moore >>> 
 >> wrote:
 
> I am looking for recommendations on a good SDR application that will run
> under Mac OSX.   I also have parallels installed with a windows VM, but
> don't want anything that runs under windows..
> 
> What are you Mac users using?..   Fred
> 
> 
> -- 
> Fred Moore
> WD8KNI
> email: f...@fmeco.com   >
> 
> phone:  321-217-8699
> 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft 
> 
> Help: http://mailman.qth.net/mmfaq.htm 
> Post: mailto:Elecraft@mailman.qth.net 
> 
> This list hosted by: http://www.qsl.net 
> Please help support this email list: http://www.qsl.net/donate.html 
> 
> Message delivered to k9...@mac.com  
> >
 
 -- 
 This message has been scanned for viruses and
 dangerous content by *MailScanner* >, and is
 believed to be clean. 
>>> 
>>> -- 
>>> Fred Moore
>>> email: f...@fmeco.com 
>>>   f...@safes.com 
>>> phone:  321-217-8699
>>> 
>>> __
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft 
>>> 
>>> Help: http://mailman.qth.net/mmfaq.htm 
>>> Post: mailto:Elecraft@mailman.qth.net 
>>> 
>>> This list hosted by: http://www.qsl.net 
>>> Please help support this email list: http://www.qsl.net/donate.html 
>>> 
>>> Message delivered to k9...@mac.com 
>> 
>> 
>> -- 
>> This message has been scanned for viruses and 
>> dangerous content by MailScanner , and is 
>> believed to be clean.
> 
> -- 
> Fred Moore
> email: f...@fmeco.com 
>f...@safes.com 
> phone:  321-217-8699

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Re: [Elecraft] KX3 SDR MAC

[Fred Moore]

Michael,  I installed iSDR and ordered to lightning to USB adapter from
apple, it will be here tomorrow..  After ordering the adapter I started
wondering how to keep the iPad charged when it is powering the sound
device..  how do you make that happen, I could not find anything on the
web.  Do you know if plugging the iPad into a powered USB hub will
charge the iPad, as the iPad would be acting as a host hub..  nothing I
could find... 

regards... Fred


On 9/14/16 3:30 PM, Michael Blake wrote:
> Fred, If you have the PigRemote it will serve as the RS-232 connection
> from iSdr to the KX3.  If you do not then then just set the frequency
> on iSdr to 0 (zero) kHz and the frequency you are tuned to will be at
> center screen and other signals will be displayed as plus or minus
> kHz.  It works quite well… very well actually.
>
> I use an Apple camera adapter (lightning to usb) with a Griffin iMic
> to connect from the I/Q jack on the KX3 to the iPad.  It works just as
> well on the iPhone with a smaller display.
>
> If you want other stuff like CAT, Log, LOTW support,  DX-Cluster, etc.
> look at RumLog NG running on your Mac.
>
> Michael Blake
> k9...@mac.com 
>
>
>
>
>
>
>> On Sep 14, 2016, at 3:04 PM, Fred Moore > > wrote:
>>
>> I am aware it doesn't require any SDR software, but wanted to play with
>> some.. primary for a panadapter, without adding on a PX3..  I have not
>> looked at iSDR for ipad will take a look at it..  thanks.. Fred
>>
>>
>> On 9/14/16 2:54 PM, Michael Blake wrote:
>>> Fred, what is your goal?  The KX3 does not require any SDR software.
>>> Panadapter, try iSDR on the iPad.  If you have a PigRemote it will
>>> even display the KX3's frequency.  It connects to the I/Q jacks.
>>>
>>> Fill us in what functions you are looking for.
>>>
>>> Michael Blake
>>> k9...@mac.com  
>>>
>>> On Sep 14, 2016, at 14:39, Fred Moore >> 
>>> > wrote:
>>>
 I am looking for recommendations on a good SDR application that
 will run
 under Mac OSX.   I also have parallels installed with a windows VM, but
 don't want anything that runs under windows..

 What are you Mac users using?..   Fred


 -- 
 Fred Moore
 WD8KNI
 email: f...@fmeco.com  

 phone:  321-217-8699

 __
 Elecraft mailing list
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 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html
 Message delivered to k9...@mac.com 
 
>>>
>>> -- 
>>> This message has been scanned for viruses and
>>> dangerous content by *MailScanner* ,
>>> and is
>>> believed to be clean.
>>
>> -- 
>> Fred Moore
>> email: f...@fmeco.com 
>>   f...@safes.com 
>> phone:  321-217-8699
>>
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to k9...@mac.com 
>
>
> -- 
> This message has been scanned for viruses and
> dangerous content by *MailScanner* , and is
> believed to be clean. 

-- 
Fred Moore
email: f...@fmeco.com
   f...@safes.com
phone:  321-217-8699

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Re: [Elecraft] KX3 SDR MAC

[Michael Blake]

Fred, If you have the PigRemote it will serve as the RS-232 connection from 
iSdr to the KX3.  If you do not then then just set the frequency on iSdr to 0 
(zero) kHz and the frequency you are tuned to will be at center screen and 
other signals will be displayed as plus or minus kHz.  It works quite well… 
very well actually.

I use an Apple camera adapter (lightning to usb) with a Griffin iMic to connect 
from the I/Q jack on the KX3 to the iPad.  It works just as well on the iPhone 
with a smaller display.

If you want other stuff like CAT, Log, LOTW support,  DX-Cluster, etc. look at 
RumLog NG running on your Mac.

Michael Blake
k9...@mac.com 






> On Sep 14, 2016, at 3:04 PM, Fred Moore  wrote:
> 
> I am aware it doesn't require any SDR software, but wanted to play with
> some.. primary for a panadapter, without adding on a PX3..  I have not
> looked at iSDR for ipad will take a look at it..  thanks.. Fred
> 
> 
> On 9/14/16 2:54 PM, Michael Blake wrote:
>> Fred, what is your goal?  The KX3 does not require any SDR software.
>> Panadapter, try iSDR on the iPad.  If you have a PigRemote it will
>> even display the KX3's frequency.  It connects to the I/Q jacks.
>> 
>> Fill us in what functions you are looking for.
>> 
>> Michael Blake
>> k9...@mac.com 
>> 
>> On Sep 14, 2016, at 14:39, Fred Moore > > wrote:
>> 
>>> I am looking for recommendations on a good SDR application that will run
>>> under Mac OSX.   I also have parallels installed with a windows VM, but
>>> don't want anything that runs under windows..
>>> 
>>> What are you Mac users using?..   Fred
>>> 
>>> 
>>> -- 
>>> Fred Moore
>>> WD8KNI
>>> email: f...@fmeco.com 
>>> 
>>> phone:  321-217-8699
>>> 
>>> __
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Elecraft@mailman.qth.net
>>> 
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to k9...@mac.com 
>> 
>> -- 
>> This message has been scanned for viruses and
>> dangerous content by *MailScanner* , and is
>> believed to be clean. 
> 
> -- 
> Fred Moore
> email: f...@fmeco.com
>   f...@safes.com
> phone:  321-217-8699
> 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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Re: [Elecraft] KX3 SDR MAC

[Fred Moore]

I am aware it doesn't require any SDR software, but wanted to play with
some.. primary for a panadapter, without adding on a PX3..  I have not
looked at iSDR for ipad will take a look at it..  thanks.. Fred


On 9/14/16 2:54 PM, Michael Blake wrote:
> Fred, what is your goal?  The KX3 does not require any SDR software.
> Panadapter, try iSDR on the iPad.  If you have a PigRemote it will
> even display the KX3's frequency.  It connects to the I/Q jacks.
>
> Fill us in what functions you are looking for.
>
> Michael Blake
> k9...@mac.com 
>
> On Sep 14, 2016, at 14:39, Fred Moore  > wrote:
>
>> I am looking for recommendations on a good SDR application that will run
>> under Mac OSX.   I also have parallels installed with a windows VM, but
>> don't want anything that runs under windows..
>>
>> What are you Mac users using?..   Fred
>>
>>
>> -- 
>> Fred Moore
>> WD8KNI
>> email: f...@fmeco.com 
>>
>> phone:  321-217-8699
>>
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   f...@safes.com
phone:  321-217-8699

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Re: [Elecraft] KX3 SDR MAC

[Michael Blake]

Fred, what is your goal?  The KX3 does not require any SDR software. 
Panadapter, try iSDR on the iPad.  If you have a PigRemote it will even display 
the KX3's frequency.  It connects to the I/Q jacks.

Fill us in what functions you are looking for.

Michael Blake
k9...@mac.com

> On Sep 14, 2016, at 14:39, Fred Moore  wrote:
> 
> I am looking for recommendations on a good SDR application that will run
> under Mac OSX.   I also have parallels installed with a windows VM, but
> don't want anything that runs under windows.. 
> 
> What are you Mac users using?..   Fred
> 
> 
> -- 
> Fred Moore
> WD8KNI 
> email: f...@fmeco.com
> 
> phone:  321-217-8699
> 
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[Elecraft] KX3 SDR MAC

[Fred Moore]

I am looking for recommendations on a good SDR application that will run
under Mac OSX.   I also have parallels installed with a windows VM, but
don't want anything that runs under windows.. 

What are you Mac users using?..   Fred


-- 
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WD8KNI 
email: f...@fmeco.com
  
phone:  321-217-8699

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Re: [Elecraft] KX3 SDR

[Bob N3MNT]

Did not mean to imply that the Raspbery Pi or BBB panadpater was anywhere
close to the PX3, but that looking at the code could help with OP's original
question.  Built mine while waiting for PX3 and yes they are day and night
re functionality and ease of use.  I love my PX3



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Re: [Elecraft] KX3 SDR

[Phil Wheeler]

I built that one using a Raspberry Pi a couple of 
years ago, pre-PX3. Worked fine for what it is, 
but ergonomics are not even close to that of a PX3.


73, Phil W7OX

On 7/28/16 4:58 AM, Bob N3MNT wrote:

Also be aware that many PC's ( especially laptops) do not have stereo line
-in jacks.  There is an excellent program written for the BeagleBone Black
that does a Panadapter for the KX3.  You can find it here.
http://www.arrl.org/files/file/QST/This%20Month%20in%20QST/April%202014/Ewing.pdf





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Re: [Elecraft] KX3 SDR

[Lyle Johnson]

Sorry, I was thinking of the KX2 which always has the IF shift enabled.

In a KX3, the center of the IQ stream is approximately the dial setting. 
I say approximately because some modes (AM, FM) or submodes (narrow SSB 
using Weaver demodulation) there may be some offset regardless of the 
setting of IF shift.


Thank you for your careful reading, Greg!

73,

Lyle KK7P


The signals at the IQ jack on the KX3 are analog, not digital. They
are centered approximately 8 kHz away from the dial frequency as the
KX3 uses an internal offset of 8 kHz.  Depending on the firmware
release and user settable options, that offset may be on either side
of the center of the IQ audio.

Do you mean always 8 kHz off, or is this only if the IF shift is
enabled?  I would expect a 0 offset without that.



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Re: [Elecraft] KX3 SDR

[Bob N3MNT]

Also be aware that many PC's ( especially laptops) do not have stereo line
-in jacks.  There is an excellent program written for the BeagleBone Black
that does a Panadapter for the KX3.  You can find it here.
http://www.arrl.org/files/file/QST/This%20Month%20in%20QST/April%202014/Ewing.pdf



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Re: [Elecraft] KX3 SDR

[James Austin]

Another free online DSP book, that I stumbled upon this evening is Signal
Processing for Communications. I have not gone much past the table of
contents, but it looks interesting.

http://www.signalprocessingforcommunications.org/
<http://www.signalprocessingforcommunications.org/index.html>

<http://www.signalprocessingforcommunications.org/index.html>Jim KA2RVO


On Wednesday, July 27, 2016, tomb18  wrote:

> Hi It's not that simple Basically you take the I and q signals, sample
> them with the sound card, convert them to a complex number, pop them  in a
> fast Fourier transform, do a rectangular to polar conversion and then
> calculate the magnitude in dBm.  Then plot them. There's a few more nuances
> but that's the overall idea. Check out the free book on the Internet called
> the scientists guide to digital signal processing.73 Tom va2fsq.com
>
>
> Sent from my Samsung Galaxy smartphone.
>  Original message From: Enzo Adrian-Reyes <
> enzo.adrianre...@gmail.com > Date: 2016-07-27  7:16 PM
> (GMT-05:00) To: Elecraft List >
> Subject: [Elecraft] KX3 SDR
> Hi All
>
> Yes this topic might be a little bit more complicated than the title
> suggest.
>
> So I have the KX3 plugged into the audio input of my computer, and its
> sending quadrature data (IQ) to the sound card, the sound card samples at
> 96Khz.
>
> So my question is how I process this? Yes I know use a piece of software,
> but I am trying to write this, I know the IQ data is coming through down
> and if I use the right process on the IQ data I get base band data out. I
> kind of know that however I dont understand the SDR data coming out, so for
> example and I getting sample of IQ data at freq point Y, or is it  a
> circular buffer arrangement.
>
> I guess what I am saying is, is the IQ data coming from teh KX3 data from
> teh Centre Freq (+/-) the bandwith scope, or just the centre freq + some
> additional side bands?
>
> How are bandwith and sampling rate related? I mean if I am sampling at at
> 96Khz, with a band with of 48Khz does that mean I am only getting 2 samples
> per second at perticular freq??? Or am I getting the entire band of 48Khz
> at 96Khz.
>
> Regards
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Re: [Elecraft] KX3 SDR

[Joe Stone (KF5WBO)]

Hi Enzo,

I'd recommend that you look at some of the Raspberry Pi / Elecraft KX3
panadapters,

http://twitter.com/giorgiofox/status/694969541521207296

https://github.com/Giorgiofox/panadapter

73's

Joe Stone
KF5WBO



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Re: [Elecraft] KX3 SDR

[tomb18]

HiI have little experience in demodulation of the signals but I did do SSB and 
AM at one time. Basically once you have the samples in the fre1uency domain you 
will want to apply a bandpass filters and shift it down to baseband,  do an 
inverse fft and then a Hilbert transform to demodulate the SSB signal.Again you 
best bet is the free online book I mention.73 Tom 


Sent from my Samsung Galaxy smartphone.
 Original message From: Enzo Adrian-Reyes 
 Date: 2016-07-27  8:04 PM  (GMT-05:00) To: tomb18 
 Cc: Elecraft List  Subject: Re: 
[Elecraft] KX3 SDR 
Hi Tom
I never thought it was simple :)
I am just trying to understand what is going on, so given by what you've said I 
would push the IQ data coming from the KX3 into an FFT, that FFT would then 
produce the circular buffer  that would  let me analyse what signals are in 
that band?
But this would be in the frequency domain then, however I am not interested in 
a band plot,  I have a signal at Freq X, with the KX3 tuned at Y, (X=Y), would 
I have to still pump that IQ data into the FFT to filter all the other signals 
out, then inverse teh FFT to get the IQ data that I would want?
Regards

On Thu, Jul 28, 2016 at 9:41 AM, tomb18  wrote:
Hi It's not that simple Basically you take the I and q signals, sample them 
with the sound card, convert them to a complex number, pop them  in a fast 
Fourier transform, do a rectangular to polar conversion and then calculate the 
magnitude in dBm.  Then plot them. There's a few more nuances but that's the 
overall idea. Check out the free book on the Internet called the scientists 
guide to digital signal processing.73 Tom va2fsq.com


Sent from my Samsung Galaxy smartphone.
 Original message From: Enzo Adrian-Reyes 
 Date: 2016-07-27  7:16 PM  (GMT-05:00) To: 
Elecraft List  Subject: [Elecraft] KX3 SDR 
Hi All

Yes this topic might be a little bit more complicated than the title
suggest.

So I have the KX3 plugged into the audio input of my computer, and its
sending quadrature data (IQ) to the sound card, the sound card samples at
96Khz.

So my question is how I process this? Yes I know use a piece of software,
but I am trying to write this, I know the IQ data is coming through down
and if I use the right process on the IQ data I get base band data out. I
kind of know that however I dont understand the SDR data coming out, so for
example and I getting sample of IQ data at freq point Y, or is it  a
circular buffer arrangement.

I guess what I am saying is, is the IQ data coming from teh KX3 data from
teh Centre Freq (+/-) the bandwith scope, or just the centre freq + some
additional side bands?

How are bandwith and sampling rate related? I mean if I am sampling at at
96Khz, with a band with of 48Khz does that mean I am only getting 2 samples
per second at perticular freq??? Or am I getting the entire band of 48Khz
at 96Khz.

Regards
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Re: [Elecraft] KX3 SDR

[Lyle Johnson]

The signals at the IQ jack on the KX3 are analog, not digital. They are 
centered approximately 8 kHz away from the dial frequency as the KX3 
uses an internal offset of 8 kHz.  Depending on the firmware release and 
user settable options, that offset may be on either side of the center 
of the IQ audio.


The rate at which you sample it in general will determine, and in any 
case will certainly limit, the maximum bandwidth you can digitize for 
further processing.


Internally, the KX3 samples the analog IQ signals at 48 kHz.

Externally you can sample at any rate you desire that your A/D 
(soundcard) will support, as long as you take into account anti-aliasing 
filtering and the bandwidth/response of the analog circuitry in the KX3 
itself, and any similar limitations of the soundcard including its 
analog circuitry and the characteristics of its ADC.  For example,many 
ADCs do noise shaping of their sampling systems to prefer 0 to 20 kHz at 
the expense of internal noise humps above 20 kHz.


General information about the frequency rolloff of the KX3 analog IQ 
signals have been discussed here in the past, and I think (but have not 
checked) that they are in the Owner's Manual.  You can also observe 
them, perhaps using your proposed soundcard and the tools that gnu radio 
provides for you to explore these topics.


73,

Lyle KK7P



On 7/27/16 5:43 PM, Enzo Adrian-Reyes wrote:

Hi

Yes, well I have used those in the past, hence my confusion, when I see
bandwith of a SDR at lets say 24Khz
and I am sampling at 48Khz. Does that mean I am sampling the whole bandwith
of 24Khz centered on freq X, or
am I a sampling some point Y at +/- from the center frequency...


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Re: [Elecraft] KX3 SDR

[Enzo Adrian-Reyes]

Hi

Yes, well I have used those in the past, hence my confusion, when I see
bandwith of a SDR at lets say 24Khz
and I am sampling at 48Khz. Does that mean I am sampling the whole bandwith
of 24Khz centered on freq X, or
am I a sampling some point Y at +/- from the center frequency.

I am trying to design a digital mode, and while I do understand the
concepts, could do it in GNU radio but it abstracts a lot of this away, and
I would like to do this in C/C++
So before getting there I have to know what is going on, especially what
data is coming from the device.

Thinking about it yeah it would have to be a stream of IQ signals coming
from the KX3 with a certain freq set, but I am guessing its in the time
domain. Not at the freq domain?



On Thu, Jul 28, 2016 at 10:26 AM, Don Wilhelm 
wrote:

> If you are writing your own software, you will have to become proficient
> in Digital Signal Processing.  The I and Q signals are simply baseband
> signals that are 90 degrees out of phase - by themselves, they will do
> nothing but audio signals, but with DSP processing, they can do most
> anything that is possible in the math of digital signals - limited only by
> your processing power and skills at DSP signal processing.
>
> Run them through FFT transforms to convert them to digital signals, and
> then do the math of your DSP algorithms to produce whatever you want -
> panadapter display, demodulation, etc.  You can add filtering and other
> things like AGC, Noise Reduction, Noise Blanking, and a whole variety of
> effects.  It is all in how you choose to implement you DSP mathematical
> functions.
>
> Rather than write your own, there are several DSP applications available
> for free or at nominal cost - try HDSDR or NaP3 or WIN4K3 as examples.
> Once you see what is happening with those applications, you may be moved
> to write your own DSP application to process the I and Q signals.
>
> 73,
> Don W3FPR
>
>
> On 7/27/2016 7:16 PM, Enzo Adrian-Reyes wrote:
>
>> Hi All
>>
>> Yes this topic might be a little bit more complicated than the title
>> suggest.
>>
>> So I have the KX3 plugged into the audio input of my computer, and its
>> sending quadrature data (IQ) to the sound card, the sound card samples at
>> 96Khz.
>>
>> So my question is how I process this? Yes I know use a piece of software,
>> but I am trying to write this, I know the IQ data is coming through down
>> and if I use the right process on the IQ data I get base band data out. I
>> kind of know that however I dont understand the SDR data coming out, so
>> for
>> example and I getting sample of IQ data at freq point Y, or is it  a
>> circular buffer arrangement.
>>
>> I guess what I am saying is, is the IQ data coming from teh KX3 data from
>> teh Centre Freq (+/-) the bandwith scope, or just the centre freq + some
>> additional side bands?
>>
>> How are bandwith and sampling rate related? I mean if I am sampling at at
>> 96Khz, with a band with of 48Khz does that mean I am only getting 2
>> samples
>> per second at perticular freq??? Or am I getting the entire band of 48Khz
>> at 96Khz.
>>
>>
>>
>
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Re: [Elecraft] KX3 SDR

[Don Wilhelm]

If you are writing your own software, you will have to become proficient 
in Digital Signal Processing.  The I and Q signals are simply baseband 
signals that are 90 degrees out of phase - by themselves, they will do 
nothing but audio signals, but with DSP processing, they can do most 
anything that is possible in the math of digital signals - limited only 
by your processing power and skills at DSP signal processing.


Run them through FFT transforms to convert them to digital signals, and 
then do the math of your DSP algorithms to produce whatever you want - 
panadapter display, demodulation, etc.  You can add filtering and other 
things like AGC, Noise Reduction, Noise Blanking, and a whole variety of 
effects.  It is all in how you choose to implement you DSP mathematical 
functions.


Rather than write your own, there are several DSP applications available 
for free or at nominal cost - try HDSDR or NaP3 or WIN4K3 as examples.
Once you see what is happening with those applications, you may be moved 
to write your own DSP application to process the I and Q signals.


73,
Don W3FPR

On 7/27/2016 7:16 PM, Enzo Adrian-Reyes wrote:

Hi All

Yes this topic might be a little bit more complicated than the title
suggest.

So I have the KX3 plugged into the audio input of my computer, and its
sending quadrature data (IQ) to the sound card, the sound card samples at
96Khz.

So my question is how I process this? Yes I know use a piece of software,
but I am trying to write this, I know the IQ data is coming through down
and if I use the right process on the IQ data I get base band data out. I
kind of know that however I dont understand the SDR data coming out, so for
example and I getting sample of IQ data at freq point Y, or is it  a
circular buffer arrangement.

I guess what I am saying is, is the IQ data coming from teh KX3 data from
teh Centre Freq (+/-) the bandwith scope, or just the centre freq + some
additional side bands?

How are bandwith and sampling rate related? I mean if I am sampling at at
96Khz, with a band with of 48Khz does that mean I am only getting 2 samples
per second at perticular freq??? Or am I getting the entire band of 48Khz
at 96Khz.




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Re: [Elecraft] KX3 SDR

[Enzo Adrian-Reyes]

Hi Tom

I never thought it was simple :)

I am just trying to understand what is going on, so given by what you've
said I would push the IQ data coming from the KX3 into an FFT, that FFT
would then produce the circular buffer  that would  let me analyse what
signals are in that band?

But this would be in the frequency domain then, however I am not interested
in a band plot,  I have a signal at Freq X, with the KX3 tuned at Y, (X=Y),
would I have to still pump that IQ data into the FFT to filter all the
other signals out, then inverse teh FFT to get the IQ data that I would
want?

Regards


On Thu, Jul 28, 2016 at 9:41 AM, tomb18  wrote:

> Hi It's not that simple
> Basically you take the I and q signals, sample them with the sound card,
> convert them to a complex number, pop them  in a fast Fourier transform, do
> a rectangular to polar conversion and then calculate the magnitude in dBm.
> Then plot them. There's a few more nuances but that's the overall idea.
> Check out the free book on the Internet called the scientists guide to
> digital signal processing.
> 73 Tom
> va2fsq.com
>
>
>
> Sent from my Samsung Galaxy smartphone.
>
>  Original message 
> From: Enzo Adrian-Reyes 
> Date: 2016-07-27 7:16 PM (GMT-05:00)
> To: Elecraft List 
> Subject: [Elecraft] KX3 SDR
>
> Hi All
>
> Yes this topic might be a little bit more complicated than the title
> suggest.
>
> So I have the KX3 plugged into the audio input of my computer, and its
> sending quadrature data (IQ) to the sound card, the sound card samples at
> 96Khz.
>
> So my question is how I process this? Yes I know use a piece of software,
> but I am trying to write this, I know the IQ data is coming through down
> and if I use the right process on the IQ data I get base band data out. I
> kind of know that however I dont understand the SDR data coming out, so for
> example and I getting sample of IQ data at freq point Y, or is it  a
> circular buffer arrangement.
>
> I guess what I am saying is, is the IQ data coming from teh KX3 data from
> teh Centre Freq (+/-) the bandwith scope, or just the centre freq + some
> additional side bands?
>
> How are bandwith and sampling rate related? I mean if I am sampling at at
> 96Khz, with a band with of 48Khz does that mean I am only getting 2 samples
> per second at perticular freq??? Or am I getting the entire band of 48Khz
> at 96Khz.
>
> Regards
> __
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Re: [Elecraft] KX3 SDR

[tomb18]

Hi It's not that simple Basically you take the I and q signals, sample them 
with the sound card, convert them to a complex number, pop them  in a fast 
Fourier transform, do a rectangular to polar conversion and then calculate the 
magnitude in dBm.  Then plot them. There's a few more nuances but that's the 
overall idea. Check out the free book on the Internet called the scientists 
guide to digital signal processing.73 Tom va2fsq.com


Sent from my Samsung Galaxy smartphone.
 Original message From: Enzo Adrian-Reyes 
 Date: 2016-07-27  7:16 PM  (GMT-05:00) To: 
Elecraft List  Subject: [Elecraft] KX3 SDR 
Hi All

Yes this topic might be a little bit more complicated than the title
suggest.

So I have the KX3 plugged into the audio input of my computer, and its
sending quadrature data (IQ) to the sound card, the sound card samples at
96Khz.

So my question is how I process this? Yes I know use a piece of software,
but I am trying to write this, I know the IQ data is coming through down
and if I use the right process on the IQ data I get base band data out. I
kind of know that however I dont understand the SDR data coming out, so for
example and I getting sample of IQ data at freq point Y, or is it  a
circular buffer arrangement.

I guess what I am saying is, is the IQ data coming from teh KX3 data from
teh Centre Freq (+/-) the bandwith scope, or just the centre freq + some
additional side bands?

How are bandwith and sampling rate related? I mean if I am sampling at at
96Khz, with a band with of 48Khz does that mean I am only getting 2 samples
per second at perticular freq??? Or am I getting the entire band of 48Khz
at 96Khz.

Regards
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[Elecraft] KX3 SDR

[Enzo Adrian-Reyes]

Hi All

Yes this topic might be a little bit more complicated than the title
suggest.

So I have the KX3 plugged into the audio input of my computer, and its
sending quadrature data (IQ) to the sound card, the sound card samples at
96Khz.

So my question is how I process this? Yes I know use a piece of software,
but I am trying to write this, I know the IQ data is coming through down
and if I use the right process on the IQ data I get base band data out. I
kind of know that however I dont understand the SDR data coming out, so for
example and I getting sample of IQ data at freq point Y, or is it  a
circular buffer arrangement.

I guess what I am saying is, is the IQ data coming from teh KX3 data from
teh Centre Freq (+/-) the bandwith scope, or just the centre freq + some
additional side bands?

How are bandwith and sampling rate related? I mean if I am sampling at at
96Khz, with a band with of 48Khz does that mean I am only getting 2 samples
per second at perticular freq??? Or am I getting the entire band of 48Khz
at 96Khz.

Regards
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Re: [Elecraft] KX3: SDR Software Solution!

[Ross Primrose]

You'll have better luck at va2fsq.com

73, Ross N4RP

On 3/30/2015 7:00 PM, hsherriff wrote:

John
Check out Win4K3 by Tom. Find it at va2fsg.com

Harlan
NC3C


Sent from my Verizon Wireless 4G LTE smartphone

 Original message From: John Reilly  Date:03/30/2015  6:19 PM  
(GMT-05:00) To: elecraft@mailman.qth.net Cc:  Subject: [Elecraft] KX3: SDR Software Solution! 

I have been trying to find a good computer SDR software solution to use
with my KX3.

First, I tried LPB2 with NaP3. NaP3 had an incredible amount of images,
and this software combination with the KX3 caused random loss of CW
elements (Like lose a dit in 'r'). Larry Phipps said this didn't
surprise him since he had never tested LPB2 with the KX3.

Second, I tried the TRX version of LP-Bridge with TRX-Pan. TRX-Pan works
great; however, I got slow, infrequent frequency updates in N1MM.

Does anyone have a solid SDR and virtual serial port software solution
for the KX3 (short of a PX3!)?

Thanks!
- 73, John, N0TA
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--
FCC Section 97.313(a) “At all times, an amateur station must use the minimum 
transmitter power necessary to carry out the desired communications.”

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Re: [Elecraft] KX3: SDR Software Solution!

[hsherriff]

John
Check out Win4K3 by Tom. Find it at va2fsg.com

Harlan
NC3C 


Sent from my Verizon Wireless 4G LTE smartphone

 Original message From: John Reilly 
 Date:03/30/2015  6:19 PM  (GMT-05:00) 
To: elecraft@mailman.qth.net Cc:  Subject: 
[Elecraft] KX3: SDR Software Solution! 
I have been trying to find a good computer SDR software solution to use 
with my KX3.

First, I tried LPB2 with NaP3. NaP3 had an incredible amount of images, 
and this software combination with the KX3 caused random loss of CW 
elements (Like lose a dit in 'r'). Larry Phipps said this didn't 
surprise him since he had never tested LPB2 with the KX3.

Second, I tried the TRX version of LP-Bridge with TRX-Pan. TRX-Pan works 
great; however, I got slow, infrequent frequency updates in N1MM.

Does anyone have a solid SDR and virtual serial port software solution 
for the KX3 (short of a PX3!)?

Thanks!
   - 73, John, N0TA
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Re: [Elecraft] KX3: SDR Software Solution!

[k3ndm]

John, 
LPB2 has a lot of problems. If you want to go with NaP3, use LP Bridge. I have 
used that for a while and it works great. But, I have found a better solution, 
Win4K3. It uses com0com for port replication vice LPB and appears to be much 
smoother. I just did the WPX this weekend with N1MM+ and had zero issues. 

73, 
Barry 
K3NDM 


- Original Message -

From: "John Reilly"  
To: "elecraft"  
Sent: Monday, March 30, 2015 6:19:48 PM 
Subject: [Elecraft] KX3: SDR Software Solution! 

I have been trying to find a good computer SDR software solution to use 
with my KX3. 

First, I tried LPB2 with NaP3. NaP3 had an incredible amount of images, 
and this software combination with the KX3 caused random loss of CW 
elements (Like lose a dit in 'r'). Larry Phipps said this didn't 
surprise him since he had never tested LPB2 with the KX3. 

Second, I tried the TRX version of LP-Bridge with TRX-Pan. TRX-Pan works 
great; however, I got slow, infrequent frequency updates in N1MM. 

Does anyone have a solid SDR and virtual serial port software solution 
for the KX3 (short of a PX3!)? 

Thanks! 
- 73, John, N0TA 
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Re: [Elecraft] KX3: SDR Software Solution!

[ayoshida]

John

I am using VSPE software to share serial port for NaP3 and Logger32
logging program. SDR program is NaP3.
I have not found better way to add "virtual PX3" for KX3 except this.
I sometimes have unexpected error on NaP3 though...

73 de aki
ja1nlx

On 2015/03/31 7:19, John Reilly wrote:
I have been trying to find a good computer SDR software solution to 
use with my KX3.


First, I tried LPB2 with NaP3. NaP3 had an incredible amount of 
images, and this software combination with the KX3 caused random loss 
of CW elements (Like lose a dit in 'r'). Larry Phipps said this didn't 
surprise him since he had never tested LPB2 with the KX3.


Second, I tried the TRX version of LP-Bridge with TRX-Pan. TRX-Pan 
works great; however, I got slow, infrequent frequency updates in N1MM.


Does anyone have a solid SDR and virtual serial port software solution 
for the KX3 (short of a PX3!)?


Thanks!
  - 73, John, N0TA
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Message delivered to ayosh...@my.email.ne.jp



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[Elecraft] KX3: SDR Software Solution!

[John Reilly]

I have been trying to find a good computer SDR software solution to use 
with my KX3.


First, I tried LPB2 with NaP3. NaP3 had an incredible amount of images, 
and this software combination with the KX3 caused random loss of CW 
elements (Like lose a dit in 'r'). Larry Phipps said this didn't 
surprise him since he had never tested LPB2 with the KX3.


Second, I tried the TRX version of LP-Bridge with TRX-Pan. TRX-Pan works 
great; however, I got slow, infrequent frequency updates in N1MM.


Does anyone have a solid SDR and virtual serial port software solution 
for the KX3 (short of a PX3!)?


Thanks!
  - 73, John, N0TA
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Re: [Elecraft] [KX3] SDR transmitter issues?

[Tony Estep]

On Mon, Dec 30, 2013 at 10:01 AM, Fred Smith wrote:

> ...have considered a 1500..

==
If you operate CW, you won't like it. Get a KX3.

Tony KT0NY
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Re: [Elecraft] [KX3] SDR transmitter issues?

[dave]

Although it is not shown on the graph nor in the text, the ARRL report 
shows the noise in dBc/Hz, i.e. a bandwidth of 1 Hz. This must be 
adjusted to the appropriate bandwidth. Add 27 dB to get to 500 Hz and 
about 33 dB to get to a typical SSB bandwidth.


And the worst noise is about -110 dBc/Hz out about 350 kHz from the 
carrier. Add 33 to that and you get -77 dBc as shown by SM5BSZ.


And the one poster the other day who claimed his Flex 1500 did not 
have have this issue is incorrect. According to the ARRL lab reports 
*ALL* Flex models are afflicted.


73 de dave
ab9ca/4



On 12/30/13 8:34 AM, Rick Stealey wrote:




With regard to SM5BSZ's SDR wideband-noise performance table 
(http://www.sm5bsz.com/dynrange/dubus313.pdf):



Something doesn't jive with the table in the above report.
I spot checked by looking up the Flex5000A in July 2008 QST, fig 3.
QST shows wideband noise never gets worse than -120dbc, although the report 
says it is -77 at 350 KHz.
And (as I remember) the K3 report from QST showed phase noise way out at the 
extremes of the meausrement dropping off much more than this author reported, 
down into the range of -155 db.

Am I reading something wrong?  Apparently this report is not recent because the 
worst performer of late (from QST measurements)  has been the FT3000.  Too bad 
SM5BSZ didn't comment on it.

Rick  K2XT

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Re: [Elecraft] [KX3] SDR transmitter issues?

[Fred Smith]

I agree after rereading all of his post and charts twice they seem to be
flawed, again by someone without a real radio to test. He does seem somewhat
confused about the measurements of the QST labs and that of Rob Sherwood
both of which have had hands on testing.

IMHO only, a Flex is a nice bench setup but any SDR radio needs to operate
without a computer hooked to it all the time to function. I have not owned
one but have considered a 1500 if I find one reasonably priced.


73,
Fred/N0AZZ
K3 Ser # 6730--KX3 # 5210--K2/100 # 6470-KAT100
P3/SVGA--KAT500--W2
Amps Elecraft KPA500 HF/6m--Alpha's 9500 HF--87A HF--Mirage B-5030-G
300+w--(2) B-5016-G's 165w 2m



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David Anderson
Sent: Monday, December 30, 2013 8:52 AM
To: Rick Stealey
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [KX3] SDR transmitter issues?

Yes I was confused by that too, it appears that Leif has adjusted the TX
noise figures from the QST dBc/Hz to a bandwidth of 500 Hz which is what QST
use for RX measurements.

Leif has not actually measured the K3 or KX3, just used the QST results (the
graph of "composite noise" and converted them for his purpose of showing
differences between receiver and transmitter noise. He has measured the
particular brand that exhibited very poor noise sidebands on transmit.

David Anderson GM4JJJ

> On 30 Dec 2013, at 14:34, Rick Stealey  wrote:
> 
> 
>> 
>> With regard to SM5BSZ's SDR wideband-noise performance table
(http://www.sm5bsz.com/dynrange/dubus313.pdf):
> 
> 
> Something doesn't jive with the table in the above report.
> I spot checked by looking up the Flex5000A in July 2008 QST, fig 3.
> QST shows wideband noise never gets worse than -120dbc, although the
report says it is -77 at 350 KHz.
> And (as I remember) the K3 report from QST showed phase noise way out at
the extremes of the meausrement dropping off much more than this author
reported, down into the range of -155 db.
> 
> Am I reading something wrong?  Apparently this report is not recent
because the worst performer of late (from QST measurements)  has been the
FT3000.  Too bad SM5BSZ didn't comment on it.
> 
> Rick  K2XT
> 
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Re: [Elecraft] [KX3] SDR transmitter issues?

[David Anderson]

Yes I was confused by that too, it appears that Leif has adjusted the TX noise 
figures from the QST dBc/Hz to a bandwidth of 500 Hz which is what QST use for 
RX measurements.

Leif has not actually measured the K3 or KX3, just used the QST results (the 
graph of "composite noise" and converted them for his purpose of showing 
differences between receiver and transmitter noise. He has measured the 
particular brand that exhibited very poor noise sidebands on transmit.

David Anderson GM4JJJ

> On 30 Dec 2013, at 14:34, Rick Stealey  wrote:
> 
> 
>> 
>> With regard to SM5BSZ's SDR wideband-noise performance table 
>> (http://www.sm5bsz.com/dynrange/dubus313.pdf):
> 
> 
> Something doesn't jive with the table in the above report.
> I spot checked by looking up the Flex5000A in July 2008 QST, fig 3.
> QST shows wideband noise never gets worse than -120dbc, although the report 
> says it is -77 at 350 KHz.
> And (as I remember) the K3 report from QST showed phase noise way out at the 
> extremes of the meausrement dropping off much more than this author reported, 
> down into the range of -155 db.
> 
> Am I reading something wrong?  Apparently this report is not recent because 
> the worst performer of late (from QST measurements)  has been the FT3000.  
> Too bad SM5BSZ didn't comment on it.
> 
> Rick  K2XT  
> 
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Re: [Elecraft] [KX3] SDR transmitter issues?

[Rick Stealey]

> 
> With regard to SM5BSZ's SDR wideband-noise performance table 
> (http://www.sm5bsz.com/dynrange/dubus313.pdf): 


Something doesn't jive with the table in the above report.
I spot checked by looking up the Flex5000A in July 2008 QST, fig 3.
QST shows wideband noise never gets worse than -120dbc, although the report 
says it is -77 at 350 KHz.
And (as I remember) the K3 report from QST showed phase noise way out at the 
extremes of the meausrement dropping off much more than this author reported, 
down into the range of -155 db.

Am I reading something wrong?  Apparently this report is not recent because the 
worst performer of late (from QST measurements)  has been the FT3000.  Too bad 
SM5BSZ didn't comment on it.

Rick  K2XT  
  
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Re: [Elecraft] [KX3] SDR transmitter issues?

[Edward R Cole]

I always get nice comments on my transmit signal using either K3 or 
KX3, thanks Elecraft!


The attention to low phase-noise in the LO was one of the primary 
reasons I chose the K3 to be the IF for my VHF/UHF/mw 
transverters.  Since I am in the pursuit of "very" weak-signals this 
it highly important to receiver sensitivity, especially on eme.  I 
can give an "A" report card on the K3.  I have yet to use the KX3 
very much on VHF but will once the 2M module in installed.  The KX3 
is my main 6m monitor.


Nice the transmitter is equally as good.

73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
dubus...@gmail.com

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Re: [Elecraft] [KX3] SDR transmitter issues?

[Wayne Burdick]

Hi all, 

With regard to SM5BSZ's SDR wideband-noise performance table 
(http://www.sm5bsz.com/dynrange/dubus313.pdf): 

The reason the K3 has excellent wideband transmit noise suppression is that it 
is a down-conversion superhet with a very clean synthesizer and transmit chain. 
This was intentional. We had several customers in our K3 focus group--VIP 
contesters and DXers--who were within line-of-sight of each other's QTH's, up 
on a ridge. They were tired of hearing their respective phase noise when they 
all happened to be on the same band. They asked us to do something about this, 
and we accepted the challenge.

To ensure as clean a signal from the transmit chain (DSP/DAC/TX mixer) as 
possible, we routed it through the same crystal filters used by the receiver, 
as well as through an additional 4-pole crystal filter that immediately follows 
the transmit mixer. The two filters in series do a great job of band-limiting 
transmit phase noise before it even gets to the mixer. 

While this basic architecture is used by other superhet transceivers, they may 
not have as clean a synthesizer as the K3, or they may lack the second filter 
in series with the transmit path, or they may have such complex conversion 
schemes that noise is allowed to leak in at various points. In some cases they 
use a DDS without a following PLL/VCO, or their VCO may be operating a high 
kHz/volt tuning ratio, leaving it susceptible to higher phase noise, especially 
on the higher bands. 

We went to extremes to keep the synthesizer's kHz/volt ratio as low as 
possible, with a combination of switchable hi-Q inductance (1 uH/0.25 uH) and 
lots of switchable fixed capacitors. The inductors and larger capacitors are 
switched with relays to eliminate any loss of Q in the VCO's tank circuit. The 
smaller capacitors are switched with PIN diodes, but because they're a small 
part of the total C, this has a negligible effect.

The KX3 is no slouch, either, falling about in the middle of this particular 
evaluation table. But the KX3 doesn't have the benefit of routing its TX signal 
through crystal filters (there are no crystal filters in a "pure" SDR), so the 
noise performance is determined almost entirely by the transmit DAC and its 
following amplifiers. We made these as clean as possible within budgetary 
constraints. We could have used a much more expensive DAC and added more 
shielding and filtering, but that would have pushed the radio to a higher size, 
cost, and current drain than we wanted.

It's nice to have further confirmation that, despite the relative simplicity of 
the KX3's transmit architecture, it still comes in ahead of many radios touted 
for their sophistication and high performance.

73,
Wayne
N6KR



On Dec 27, 2013, at 5:00 PM, "Bruce Beford"  
wrote:

> 
> You're not missing anything. It shows how good the receiver is. ('better' 
> than the transmitter). It highlights the difference in performance between 
> the receiver and the transmitter. But... does having a "way better" receiver 
> than a transmitter necessarily make it the "best all around transceiver"? I 
> don't believe so.
>  
> 
> I still believe (personally) that my K3 is a better all around transceiver 
> than my KX3. But- they each have their strengths.
> 
> 73,
> 
> Bruce N1RX



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Re: [Elecraft] KX3 SDR & networks

[Phillip Nichols]

Is there a way to share the SDR functionality over a network? Let's say 
I setup the KX3 at one end of my house hooked to my desktop while I 
operated my netbook somewhere else... Can I access the IQ in an SDR 
software remotely?

Like using Ham Radio Deluxe's Server/Client function.

73/Phillip/N8AYE
-.  ---..  .-  -.--  .


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[Elecraft] KX3 SDR & networks

[Phillip Nichols]

Is there a way to share the SDR functionality over a network? Let's say 
I setup the KX3 at one end of my house hooked to my desktop while I 
operated my netbook somewhere else... Can I access the IQ in an SDR 
software remotely?

Like using Ham Radio Deluxe's Server/Client function.

Phillip
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