Elecraft P3 Panadapter Sneak Peek this Saturday

[P.B. Christensen]

> a mess of little peaks, masking the actual CW signal. That's the amazing
> thing about the I/Q system. I wonder if the P3 has the same capability or
> does it resemble a more refined version of ICOM's scope?

Here's what's interesting:

If the P3 does in fact use a quadrature mixer post I.F. buffer amp (and not
directly digital-sampled like the SDR-IQ), that means all the hooks are in
place to feed its I/Q outputs to a premium sound card and of
course...PowerSDR as an alternate display and decoder.  All it takes is a
couple I/Q audio jacks on the P3's rear panel if they're not there already
(wink wink).

Paul, W9AC
 

______________________________________________________________
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

[wb2ssb]

I would greatly prefer the capability to use PowerSDR and P3 simultaneously.

-----Original Message-----
From: [hidden email] [mailto:[hidden email]] On Behalf Of Paul Christensen
Sent: Sunday, August 16, 2009 12:48 PM
To: [hidden email]
Subject: Re: [Elecraft] P3 Photo

> a mess of little peaks, masking the actual CW signal. That's the amazing
> thing about the I/Q system. I wonder if the P3 has the same capability or
> does it resemble a more refined version of ICOM's scope?

Here's what's interesting:

If the P3 does in fact use a quadrature mixer post I.F. buffer amp (and not
directly digital-sampled like the SDR-IQ), that means all the hooks are in
place to feed its I/Q outputs to a premium sound card and of
course...PowerSDR as an alternate display and decoder.  All it takes is a
couple I/Q audio jacks on the P3's rear panel if they're not there already
(wink wink).

Paul, W9AC
 

______________________________________________________________
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

------------------------------------------------------------
This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain information that is proprietary, confidential, and exempt from disclosure under applicable law. Any unauthorized review, use, disclosure, or distribution is prohibited. If you have received this email in error please notify the sender by return email and delete the original message. Please note, the recipient should check this email and any attachments for the presence of viruses. The organization accepts no liability for any damage caused by any virus transmitted by this email.
=================================

______________________________________________________________
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

[Doug Faunt N6TQS [phone]]

Are there any provisions made for displaying the signal from the 2nd
RX?  Is there interest in this capability?

73, doug

______________________________________________________________
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

[wb2ssb]

Absolutely interest on my part!

-----Original Message-----
From: [hidden email] [mailto:[hidden email]] On Behalf Of Doug Faunt N6TQS [phone]
Sent: Sunday, August 16, 2009 12:51 PM
To: [hidden email]
Subject: Re: [Elecraft] P3 Photo

Are there any provisions made for displaying the signal from the 2nd
RX?  Is there interest in this capability?

73, doug

______________________________________________________________
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

------------------------------------------------------------
This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain information that is proprietary, confidential, and exempt from disclosure under applicable law. Any unauthorized review, use, disclosure, or distribution is prohibited. If you have received this email in error please notify the sender by return email and delete the original message. Please note, the recipient should check this email and any attachments for the presence of viruses. The organization accepts no liability for any damage caused by any virus transmitted by this email.
=================================

______________________________________________________________
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

[Merv Schweigert]

David Woolley (E.L) wrote:

> Guy Olinger K2AV wrote:
>
>  
>> stuff available) switching supply that..
>>
>> 2) is completely noiseless at RF frequencies.
>>    
>
> Not physically possible for a switching supply; you need to specify
> acceptable, non-zero levels of RF noise.
>
>  

Absolutely correct Guy,  I followed the long thread a while back about
power supplies to try and learn what others had done to help with
switchers.  I find it true as you say its impossible,  one can only
bring the
switcher noise down to some acceptable level,  with many beads and
by pass caps etc I finally have the noise down almost to the point it
is covered by antenna noise on each band.
Some supplies it was not possible to do that even.  The P3 will open a
lot of eyes as to what is really power supply broad band noise and
what is real atmospheric noise.  It will show that up quite well.
Maybe some hams will find their s5 and higher noise levels are self
generated and be able to lower that by several DB.  A whole new
world of DX will await.
Or just go back to a old heavy transformer type supply and be almost
noise free.
73 Merv KH7C
______________________________________________________________
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]

That's what I've been lobbying for.   The P3 with I/Q outputs, 400 KHz
bandwidth, and computer control (via the K3 or direct) would have
powerful SDR capabilities with all kinds of potential third party
applications.  Without the I/Q outputs, it's a very expensive dedicated
display.

Possibly Elecraft yet has some version of that in mind, but with all the
fuss I've raised on the topic I would have expected some indication if
they did.

Oh well ...

73,
Dave   AB7E



Paul Christensen wrote:

> Here's what's interesting:
>
> If the P3 does in fact use a quadrature mixer post I.F. buffer amp (and not
> directly digital-sampled like the SDR-IQ), that means all the hooks are in
> place to feed its I/Q outputs to a premium sound card and of
> course...PowerSDR as an alternate display and decoder.  All it takes is a
> couple I/Q audio jacks on the P3's rear panel if they're not there already
> (wink wink).
>
> Paul, W9AC
>  
>
>  

______________________________________________________________
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

[K6TFZ]

Wayne said that it began working last Wednesday night.
It is presently set at a refresh rate of ~6/sec and he said
it could easily go to 20. Current draw is presently about
250ma but with a few more accessories he has planned
could go to 300ma. He also said that the font presently in
there is quite small and that a larger one is planned.
They roughed it together for the show. (Nice roughing!)
Geoff, K6TFZ
----------------------------------------------------------------------------
Anyone have a phone that can take video?  I'd like to see
how fast it updates.

______________________________________________________________
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

[K3PIN]

Nice photo. I may have to sell my LP-Pan set up and try the P3.

Is there a MSRP yet $   ???

Steve-K3PIN


On Sat, 2009-08-15 at 17:16 -0400, Don Nesbitt wrote:
> Received a direct reply to my earlier post regarding a photo.  Thanks to
> John N6AX for forwarding the photo.  Someone will likely have a better photo
> to share but this gives us an idea of what the prototype looks like.
>
> See the photo at:  http://www.flickr.com/photos/n4hh/
>
> The link should work by just clicking on it - no need to register, etc.
> Just click and enjoy!  Once there, click on the photo of the P3 and select a
> large size.
>
> Many thanks John!  73 -- Don N4HH
>
> -----Original Message-----
> From: [e-mail]
> [mailto:[e-mail]] On Behalf Of Don Nesbitt
> Sent: Saturday, August 15, 2009 3:25 PM
> To: [e-mail]
> Subject: [Elecraft] Elecraft P3 Panadapter Sneak Peek this Saturday
>
> OK - times up! It's after Noon out there! Surely there is someone at the
> hamfest with an iPhone, Blackberry or something else that can snap a photo
> and post it somewhere!  Or - did all the "feedback" cancel the showing?
> Please, do it now and put us out of our collective misery - please!  73 --
> Don N4HH K3/100 #83
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[e-mail]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> No virus found in this incoming message.
> Checked by AVG - www.avg.com
> Version: 8.5.392 / Virus Database: 270.13.58/2304 - Release Date: 08/15/09
> 06:10:00
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[e-mail]
>
> 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:[e-mail]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[JIM DAVIS-11]

On Sat, 15 Aug 2009 18:20:55 -0700
  Rick Tavan N6XI <[hidden email]> wrote:

> Hmm. We may have a religious issue here. I was delighted to see the P3
> positioned on the left BECAUSE I am right-handed. I send CW with my right
> hand and adjust the primary radio with my left hand. Stuff located on the
> right side of the panel (or to the right of the panel) must be adjusted
> while obscuring most of the panel.
>
> I suspect, however, that the P3 will come with sufficiently long cables to
> be placed on either side.
>
> /Rick N6XI
>
> On 8/15/09, W6NEK <[hidden email]> wrote:
>>
>> My first reaction to seeing the P3 was that its front panel layout is
>> presently designed for it to be located on the LEFT side of the K3.  I know
>> all the left handed people out there will say that's fine but as a rightie
>> I
>> disagree.  Placing it on the left of the K3 it sits next to the front panel
>> Mic and Phone connectors (with associated cables).
>>
> ______________________________________________________________

Rick,

Even in "HAM radio" there's party-divisions, can't we have more "consensus-builders"?

There's the "Left-faction & there's the Right-faction" we "Middle-roaders" deserve to be
considered
as well by Elecraft as far as the up & coming "P3" is concerned!

They should mount ALL rear connectors & jacks "EQUAL DISTANCE" from both sides of the unit!

That way "EVERYBODY'S HAPPY?"  :-)))

Quote from "Mr. Rodney King": "Can't we all get along together!"

Jim/nn6ee
S/N 2406





 

______________________________________________________________
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

[Eric Swartz - WA6HHQ]

That's an emphatic yes. :-)

We absolutely -do- have point and click tuning on the P3 that centers
the K3 on a desired P3 signal. That's a key design requirement.

73, Eric  WA6HHQ

Brett Howard wrote:

> >From the description I'd almost guarantee the answer to number 1 is a no.
>
> I'm still very interested.
>
>
> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Dave - AB7E
> Sent: Tuesday, August 11, 2009 11:31 AM
> To: [hidden email]; [hidden email]
> Subject: Re: [Elecraft] Elecraft P3 Panadapter Sneak Peek this Saturday
>
>
> Two quick questions:
>
> 1.  Does it have any kind of point/click capability for tuning the K3 to a
> signal visible on the P3?
>

_..._

______________________________________________________________
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 Woolley (E.L)]

Steve Ellington wrote:

> photo it appears that the display is not averaging the signals as Flex
> SDR. The QRN appears as little signals. With the Flex SDR- LP Pan, QRN
> moves the entire base line up and down slowly but doesn't seem to appear
> as a mess of little peaks, masking the actual CW signal. That's the
> amazing thing about the I/Q system. I wonder if the P3 has the same

Averaging across multiple FFTs isn't related to whether or not I and Q
feeds are used.  Using I/Q feeds is just a way of running the A/D
convertors at half the speed for the same overall bandwidth (although at
the cost of having two A/D convertors, two mixers and more complex local
oscillator circuitry).  I think it also reduces the DSP power required
by about a factor of two, as one solves for both positive and negative
frequencies, whereas the negative frequencies from a single mixer are
the same as the positive ones and are just thrown away at the end of the
processing.


--
David Woolley
"we do not overly restrict the subject matter on the list, and we
encourage postings on a wide range of amateur radio related topics"
List Guidelines <http://www.elecraft.com/elecraft_list_guidelines.htm>
______________________________________________________________
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