Wide Spectrum support on Pan Adapter/SDR w/ K3 or KX3

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Wide Spectrum support on Pan Adapter/SDR w/ K3 or KX3

Bert Rollen
All,

 

I have a young friend who wishes to do the following -

 

(my summary, not his words)

 

-          Panadapter (or SDR) with 4Mhz or more display (not just a few
hundred kHz)

-          Capable of 144 MHz - 148 MHz

-          Point & click control a rig (K3, KX-3, Flex-6700, rig w/ 144 MHz
transverter etc.)

 

Essentially, he wants typical pan-adapter display and control, but 4000 kHz
wide (or more)

 

 

SO, do I recall some folks here who have run a separate SDR to drive
controls on a K3? (I seem recall some sort of signal splitting involved
outside the main radio)

 

Any system / integration advice for this young ham?

 

Thanks,

 

Bert - K4AR

 

 
<https://www.linkedin.com/profile/view?id=116628572&authType=name&authToken=
cHsm&locale=en_US&pvs=pp&trk=ppro_viewmore> Bert Rollen, PMP

 <mailto:[hidden email]> [hidden email]

865-599-6074

 

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Re: Wide Spectrum support on Pan Adapter/SDR w/ K3 or KX3

Don Wilhelm-4
Bert,

I don't know if the K3 IF output is broad enough to support a 4 MHz span
(I suspect it is not).

He would have to find an SDR receiver capable of supporting that 4 MHz
span and connect it to the K3 IF output.

I do know that SDR dongles are capable of 2 MHz span, but I have never
seen one that does a 4 MHz span.

Perhaps your young friend will have to develop something on his own.

73,
Don W3FPR

On 2/7/2016 1:33 PM, Bert Rollen wrote:

> All,
>
> I have a young friend who wishes to do the following -
>
> (my summary, not his words)
>
> -          Panadapter (or SDR) with 4Mhz or more display (not just a few
> hundred kHz)
>
> -          Capable of 144 MHz - 148 MHz
>
> -          Point & click control a rig (K3, KX-3, Flex-6700, rig w/ 144 MHz
> transverter etc.)
>
> Essentially, he wants typical pan-adapter display and control, but 4000 kHz
> wide (or more)
>

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Re: Wide Spectrum support on Pan Adapter/SDR w/ K3 or KX3

George Danner
Bert,
Spectrum Analyzer would be the best bet!
Would also allow transmit monitoring.
We used both Spectrum Analyzers & Spectrum Monitors for satellite up/down
links to view a single transponder up to the entire satellite.
Spectrum Monitor had 70 MHz & 950 MHz inputs. The 70 MHz input would see a
transponder and a half. The 950 MHz input would see the entire bird.
Don't remember how wide but sure it was way more than 4 MHz.

73
George
AI4VZ


-----Original Message-----
From: Don Wilhelm
Sent: Sunday, February 7, 2016 1:50 PM
To: Bert Rollen ; [hidden email]
Subject: Re: [Elecraft] Wide Spectrum support on Pan Adapter/SDR w/ K3 or
KX3

Bert,

I don't know if the K3 IF output is broad enough to support a 4 MHz span
(I suspect it is not).

He would have to find an SDR receiver capable of supporting that 4 MHz
span and connect it to the K3 IF output.

I do know that SDR dongles are capable of 2 MHz span, but I have never
seen one that does a 4 MHz span.

Perhaps your young friend will have to develop something on his own.

73,
Don W3FPR

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Re: Wide Spectrum support on Pan Adapter/SDR w/ K3 or KX3

Joe Subich, W4TV-4
In reply to this post by Don Wilhelm-4

> I don't know if the K3 IF output is broad enough to support a 4 MHz
> span (I suspect it is not).

No, it is limited to the bandwidth of the preselector filters at best.
Since the two meter transverter uses 28 MHz as an IF, that would be
roughly 28 - 30 MHz.

Front end (at 2 meters) RF splitting is not practical since the
transverter does not have an externally accessible RX Ant loop
(like RX Out/RX In on the KXV3/A/B).

73,

   ... Joe, W4TV


On 2/7/2016 1:50 PM, Don Wilhelm wrote:

> Bert,
>
> I don't know if the K3 IF output is broad enough to support a 4 MHz span
> (I suspect it is not).
>
> He would have to find an SDR receiver capable of supporting that 4 MHz
> span and connect it to the K3 IF output.
>
> I do know that SDR dongles are capable of 2 MHz span, but I have never
> seen one that does a 4 MHz span.
>
> Perhaps your young friend will have to develop something on his own.
>
> 73,
> Don W3FPR
>
> On 2/7/2016 1:33 PM, Bert Rollen wrote:
>> All,
>>
>> I have a young friend who wishes to do the following -
>>
>> (my summary, not his words)
>>
>> -          Panadapter (or SDR) with 4Mhz or more display (not just a few
>> hundred kHz)
>>
>> -          Capable of 144 MHz - 148 MHz
>>
>> -          Point & click control a rig (K3, KX-3, Flex-6700, rig w/
>> 144 MHz
>> transverter etc.)
>>
>> Essentially, he wants typical pan-adapter display and control, but
>> 4000 kHz
>> wide (or more)
>>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>
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Re: Wide Spectrum support on Pan Adapter/SDR w/ K3 or KX3

Kevin Stover
In reply to this post by Bert Rollen
Software Radio Labs QS1R will do 2MHz as a standalone SDR covering 10
KHz to 62.5 MHz.


On 2/7/2016 12:33 PM, Bert Rollen wrote:

> All,
>
>  
>
> I have a young friend who wishes to do the following -
>
>  
>
> (my summary, not his words)
>
>  
>
> -          Panadapter (or SDR) with 4Mhz or more display (not just a few
> hundred kHz)
>
> -          Capable of 144 MHz - 148 MHz
>
> -          Point & click control a rig (K3, KX-3, Flex-6700, rig w/ 144 MHz
> transverter etc.)
>
>  
>
> Essentially, he wants typical pan-adapter display and control, but 4000 kHz
> wide (or more)
>
>  
>
>  
>
> SO, do I recall some folks here who have run a separate SDR to drive
> controls on a K3? (I seem recall some sort of signal splitting involved
> outside the main radio)
>
>  
>
> Any system / integration advice for this young ham?
>
>  
>
> Thanks,
>
>  
>
> Bert - K4AR
>
>


--
R. Kevin Stover
AC0H
ARRL
FISTS #11993
SKCC #215
NAQCC #3441


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Re: Wide Spectrum support on Pan Adapter/SDR w/ K3 or KX3

GM4JJJ
Kevin, I am doing something like this. I use a KX3 with an external transverter for 144 MHz. I have a 3dB splitter on the IF out of the transverter (14MHz) and send half the signal to the KX3 and half to an SDRPlay RSP running HDSDR. It can display in to 8MHz bandwidth, though I only need a view of about 500 kHz normally to monitor the weak signal portion of the band. The HDSDR software can be configured to control the KX3 via CAT by point and click and the KX3 can control the tuning of the HDSDR whichever you require.  SDRPlay works pretty well for this.

I have used the SDRPlay directly on 144 MHz rather than on the IF from the transverter, but it does require a band pass filter ahead of it if you have strong out of band signals, it doesn't have great RF preselection unlike the Funcube Pro+ which has a SAW filter on 2m.

73 from David GM4JJJ

> On 7 Feb 2016, at 22:44, Kevin Stover <[hidden email]> wrote:
>
> Software Radio Labs QS1R will do 2MHz as a standalone SDR covering 10 KHz to 62.5 MHz.
>
>
>> On 2/7/2016 12:33 PM, Bert Rollen wrote:
>> All,
>>
>>  
>> I have a young friend who wishes to do the following -
>>
>>  
>> (my summary, not his words)
>>
>>  
>> -          Panadapter (or SDR) with 4Mhz or more display (not just a few
>> hundred kHz)
>>
>> -          Capable of 144 MHz - 148 MHz
>>
>> -          Point & click control a rig (K3, KX-3, Flex-6700, rig w/ 144 MHz
>> transverter etc.)
>>
>>  
>> Essentially, he wants typical pan-adapter display and control, but 4000 kHz
>> wide (or more)
>>
>>  
>>  
>> SO, do I recall some folks here who have run a separate SDR to drive
>> controls on a K3? (I seem recall some sort of signal splitting involved
>> outside the main radio)
>>
>>  
>> Any system / integration advice for this young ham?
>>
>>  
>> Thanks,
>>
>>  
>> Bert - K4AR
>
>
> --
> R. Kevin Stover
> AC0H
> ARRL
> FISTS #11993
> SKCC #215
> NAQCC #3441
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
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Re: Wide Spectrum support on Pan Adapter/SDR w/ K3 or KX3

GM4JJJ
That should have been addressed to Bert not Kevin I see now.

73 from David GM4JJJ

> On 7 Feb 2016, at 23:44, David Anderson <[hidden email]> wrote:
>
> Kevin, I am doing something like this. I use a KX3 with an external transverter for 144 MHz. I

Snip

73

David GM4JJJ

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Re: Wide Spectrum support on Pan Adapter/SDR w/ K3 or KX3

Bert Rollen
In reply to this post by GM4JJJ
Thanks Dave, this was the one I recalled in my memory.



 
Bert Rollen, PMP
[hidden email]
865-599-6074


-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of David
Anderson
Sent: Sunday, February 7, 2016 6:44 PM
To: Kevin Stover <[hidden email]>
Cc: [hidden email]
Subject: Re: [Elecraft] Wide Spectrum support on Pan Adapter/SDR w/ K3 or
KX3

Kevin, I am doing something like this. I use a KX3 with an external
transverter for 144 MHz. I have a 3dB splitter on the IF out of the
transverter (14MHz) and send half the signal to the KX3 and half to an
SDRPlay RSP running HDSDR. It can display in to 8MHz bandwidth, though I
only need a view of about 500 kHz normally to monitor the weak signal
portion of the band. The HDSDR software can be configured to control the KX3
via CAT by point and click and the KX3 can control the tuning of the HDSDR
whichever you require.  SDRPlay works pretty well for this.

I have used the SDRPlay directly on 144 MHz rather than on the IF from the
transverter, but it does require a band pass filter ahead of it if you have
strong out of band signals, it doesn't have great RF preselection unlike the
Funcube Pro+ which has a SAW filter on 2m.

73 from David GM4JJJ

> On 7 Feb 2016, at 22:44, Kevin Stover <[hidden email]> wrote:
>
> Software Radio Labs QS1R will do 2MHz as a standalone SDR covering 10 KHz
to 62.5 MHz.

>
>
>> On 2/7/2016 12:33 PM, Bert Rollen wrote:
>> All,
>>
>>  
>> I have a young friend who wishes to do the following -
>>
>>  
>> (my summary, not his words)
>>
>>  
>> -          Panadapter (or SDR) with 4Mhz or more display (not just a few
>> hundred kHz)
>>
>> -          Capable of 144 MHz - 148 MHz
>>
>> -          Point & click control a rig (K3, KX-3, Flex-6700, rig w/ 144
MHz

>> transverter etc.)
>>
>>  
>> Essentially, he wants typical pan-adapter display and control, but
>> 4000 kHz wide (or more)
>>
>>  
>>  
>> SO, do I recall some folks here who have run a separate SDR to drive
>> controls on a K3? (I seem recall some sort of signal splitting
>> involved outside the main radio)
>>
>>  
>> Any system / integration advice for this young ham?
>>
>>  
>> Thanks,
>>
>>  
>> Bert - K4AR
>
>
> --
> R. Kevin Stover
> AC0H
> ARRL
> FISTS #11993
> SKCC #215
> NAQCC #3441
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net Please help support this email
> list: http://www.qsl.net/donate.html Message delivered to
> [hidden email]
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