Elecraft › [K3]

K3: Why isn't this feature built in?

Classic

List

Threaded

5 messages Options

Tim Tucker

K3: Why isn't this feature built in?

OK, so it's somewhat of a loaded question to get people to read the post,
but here goes:

I recently installed the transverter/RX antenna board in my K3. I am now in
the process of putting up a RX only antenna to use with an MFJ 1026 Noise
Canceller to help get rid of what I believe to be a neighbor's plasma TV
noise (and other interference). Initial tests with the 1026 using a
make-shift antenna have worked remarkably well and leave the K3's DSP NR and
NB with much less noise to "clean up".

So, the question is this: Is it possible to build this MFJ 1026 type of
functionality built into the K3 in firmware as an included feature with the
KXV3a? It would be really cool if you could just adjust the phase of the
unwanted RX signal on the rig and have it remember the setting for each
band. Then I wouldn't need this other MFJ box sitting here.

Thoughts?

Tim
AE6LX
www.worldwidedx.com
______________________________________________________________
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

KD8NNU

Re: K3: Why isn't this feature built in?

I dont know about built in feature, but I have an ANC-4 that once and
awhile I have to turn on to kill the noise from plasma TV's.

Sure do like digital modes where the TV noise is not that bad for me.

Don
KD8NNU

On Wed, Jun 8, 2011 at 4:33 PM, Tim Tucker wrote:

> OK, so it's somewhat of a loaded question to get people to read the
> post,
> but here goes:
>
> I recently installed the transverter/RX antenna board in my K3. I am
> now in
> the process of putting up a RX only antenna to use with an MFJ 1026
> Noise
> Canceller to help get rid of what I believe to be a neighbor's plasma
> TV
> noise (and other interference). Initial tests with the 1026 using a
> make-shift antenna have worked remarkably well and leave the K3's DSP
> NR and
> NB with much less noise to "clean up".
>
> So, the question is this: Is it possible to build this MFJ 1026 type
> of
> functionality built into the K3 in firmware as an included feature
> with the
> KXV3a? It would be really cool if you could just adjust the phase of
> the
> unwanted RX signal on the rig and have it remember the setting for
> each
> band. Then I wouldn't need this other MFJ box sitting here.
>
> Thoughts?
>
> Tim
> AE6LX
> www.worldwidedx.com
> ______________________________________________________________
> 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

______________________________________________________________
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

juergen piezo

Re: K3: Why isn't this feature built in?

Hi Don

Some hams are already playing around with similar techniques. Since the K3's 2 receivers are already phase coherent, we just need someone that can write the software/firmware.

http://www.pa0sim.nl/Results%20and%20Audio%20Samples.htm

In my experience playing around with these systems, is that its best done with a true direct sampling receivers with no AGC. The Wiener Hopf beam steerer solution has been found to work well and would be practical for hams to implement.

Find a DSP guru who is a ham and who has the interest! Everything from beam steering, noise cancellation and direction finding would then be possible. Alternatively pick up the phone and call Rohde and Schwarz, they can sell you of the shelf hardware that will do the job, bring along your lottery ticket winnings!

73
John

[hidden email]
--- On Wed, 6/8/11, [hidden email] <[hidden email]> wrote:

> From: [hidden email] <[hidden email]>
> Subject: Re: [Elecraft] K3: Why isn't this feature built in?
> To: "Tim Tucker" <[hidden email]>
> Cc: "Elecraft Reflector" <[hidden email]>
> Date: Wednesday, June 8, 2011, 7:14 PM
> I dont know about built in feature,
> but I have an ANC-4 that once and
> awhile I have to turn on to kill the noise from plasma
> TV's.
>
> Sure do like digital modes where the TV noise is not that
> bad for me.
>
>
>
> Don
> KD8NNU
>
>
> On Wed, Jun 8, 2011 at 4:33 PM, Tim Tucker wrote:
>
> > OK, so it's somewhat of a loaded question to get
> people to read the
> > post,
> > but here goes:
> >
> > I recently installed the transverter/RX antenna board
> in my K3. I am
> > now in
> > the process of putting up a RX only antenna to use
> with an MFJ 1026
> > Noise
> > Canceller to help get rid of what I believe to be a
> neighbor's plasma
> > TV
> > noise (and other interference). Initial tests
> with the 1026 using a
> > make-shift antenna have worked remarkably well and
> leave the K3's DSP
> > NR and
> > NB with much less noise to "clean up".
> >
> > So, the question is this: Is it possible to
> build this MFJ 1026 type
> > of
> > functionality built into the K3 in firmware as an
> included feature
> > with the
> > KXV3a? It would be really cool if you could just
> adjust the phase of
> > the
> > unwanted RX signal on the rig and have it remember the
> setting for
> > each
> > band. Then I wouldn't need this other MFJ box
> sitting here.
> >
> > Thoughts?
> >
> > Tim
> > AE6LX
> > www.worldwidedx.com
> >
> ______________________________________________________________
> > 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
> ______________________________________________________________
> 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
>

David Gilbert

Re: K3: Why isn't this feature built in?

In reply to this post by Tim Tucker

About a year ago I prompted a discussion on using variable phasing of
the diversity receive capability of the K3 to create a null in a desired
direction. While Alan and others agreed it was theoretically possible
to do that, there are indeed issues that make it more involved than it
might seem on the surface. You should be able to get more details from
the reflector archives.

73,
Dave AB7E

On 6/8/2011 1:33 PM, Tim Tucker wrote:

> OK, so it's somewhat of a loaded question to get people to read the post,
> but here goes:
>
> I recently installed the transverter/RX antenna board in my K3. I am now in
> the process of putting up a RX only antenna to use with an MFJ 1026 Noise
> Canceller to help get rid of what I believe to be a neighbor's plasma TV
> noise (and other interference). Initial tests with the 1026 using a
> make-shift antenna have worked remarkably well and leave the K3's DSP NR and
> NB with much less noise to "clean up".
>
> So, the question is this: Is it possible to build this MFJ 1026 type of
> functionality built into the K3 in firmware as an included feature with the
> KXV3a? It would be really cool if you could just adjust the phase of the
> unwanted RX signal on the rig and have it remember the setting for each
> band. Then I wouldn't need this other MFJ box sitting here.
>
> Thoughts?
>
> Tim
> AE6LX
> www.worldwidedx.com
> ______________________________________________________________
> 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
>

Joe Subich, W4TV-4

Re: K3: Why isn't this feature built in?

In reply to this post by juergen piezo

>> Find a DSP guru who is a ham and who has the interest! Everything
>> from beam steering, noise cancellation and direction finding would
>> then be possible.

Contact K1LT ... I believe Vic is doing electronic beam steering with
four softrock receivers, a custom common oscillator and linux based
software. Try www.k1lt.com ...

73,

... Joe, W4TV

On 6/8/2011 11:12 PM, juergen wrote:

>
> Hi Don
>
> Some hams are already playing around with similar techniques. Since the K3's 2 receivers are already phase coherent, we just need someone that can write the software/firmware.
>
> http://www.pa0sim.nl/Results%20and%20Audio%20Samples.htm
>
> In my experience playing around with these systems, is that its best done with a true direct sampling receivers with no AGC. The Wiener Hopf beam steerer solution has been found to work well and would be practical for hams to implement.
>
> Find a DSP guru who is a ham and who has the interest! Everything from beam steering, noise cancellation and direction finding would then be possible. Alternatively pick up the phone and call Rohde and Schwarz, they can sell you of the shelf hardware that will do the job, bring along your lottery ticket winnings!
>
> 73
> John
>
> [hidden email]
> --- On Wed, 6/8/11, [hidden email]<[hidden email]> wrote:
>
>> From: [hidden email]<[hidden email]>
>> Subject: Re: [Elecraft] K3: Why isn't this feature built in?
>> To: "Tim Tucker"<[hidden email]>
>> Cc: "Elecraft Reflector"<[hidden email]>
>> Date: Wednesday, June 8, 2011, 7:14 PM
>> I dont know about built in feature,
>> but I have an ANC-4 that once and
>> awhile I have to turn on to kill the noise from plasma
>> TV's.
>>
>> Sure do like digital modes where the TV noise is not that
>> bad for me.
>>
>>
>>
>> Don
>> KD8NNU
>>
>>
>> On Wed, Jun 8, 2011 at 4:33 PM, Tim Tucker wrote:
>>
>>> OK, so it's somewhat of a loaded question to get
>> people to read the
>>> post,
>>> but here goes:
>>>
>>> I recently installed the transverter/RX antenna board
>> in my K3. I am
>>> now in
>>> the process of putting up a RX only antenna to use
>> with an MFJ 1026
>>> Noise
>>> Canceller to help get rid of what I believe to be a
>> neighbor's plasma
>>> TV
>>> noise (and other interference). Initial tests
>> with the 1026 using a
>>> make-shift antenna have worked remarkably well and
>> leave the K3's DSP
>>> NR and
>>> NB with much less noise to "clean up".
>>>
>>> So, the question is this: Is it possible to
>> build this MFJ 1026 type
>>> of
>>> functionality built into the K3 in firmware as an
>> included feature
>>> with the
>>> KXV3a? It would be really cool if you could just
>> adjust the phase of
>>> the
>>> unwanted RX signal on the rig and have it remember the
>> setting for
>>> each
>>> band. Then I wouldn't need this other MFJ box
>> sitting here.
>>>
>>> Thoughts?
>>>
>>> Tim
>>> AE6LX
>>> www.worldwidedx.com
>>>
>> ______________________________________________________________
>>> 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
>> ______________________________________________________________
>> 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
>>
> ______________________________________________________________
> 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
>