Sub-rx or P3?

[John Harper AE5X]

Just curious about opinions of CW DXers/contesters here on the list
regarding these two options - which is likely to make the most impact on
effectiveness?

"Both" is not currently an option  ;-)

John Harper AE5X
http://www.ae5x.com/blog

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[John K3TN]

I'd say the sub-rx by a long shot. For DXing, the ability to listen to *both* the DX station working split *and* his pileup at the same time is a biggie. For contesting, SO2V operation listen around the same band when CQing during slow times is an enhancement. Just seeing the blips is not as effective as hearing the calls.

John K3TN

[Craig Smith]

I've obtained both relatively recently, and my vote would be for the P3.

The P3 is quite useful for seeing the calling freq of stations in DX
pileups, so in that regard it satisfies one of the functions of the sub-RX.


Unless you really need to use diversity or to monitor the audio on another
frequency or band, the sub RX has limited additional utility.  It is pricy
($700 to $1000+ depending on your choice of filters) and adds considerably
to the internal complexity of the K3, making service access more difficult.
But it does work well and increases the flexibility of the K3.

The P3 is eye-opening.  At a glance you can see everything happening on the
band segment of your choice without touching a tuning dial.  I've found lots
of DX with it already before it appeared on the clusters.  The display is
excellent - very clear and sharp.  The functionality of the P3 will get even
better as the expected hardware and firmware upgrades become available.

73   Craig   AC0DS

 


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[Barry]

I agree the sub-Rx by a long shot.  The way to get in and out of a pileup quickly is by following who the DX is working and figuring out the pattern of a split operation.

I had a spectrum display in my 7800, and while it's pretty to look at, it's really just fluff.

Barry W2UP ( DXCC TOTHR FWIW :.)  )

[Jack Smith-6]

  There are low cost alternatives to the P3, such as (cheapest) an 8 MHz
Softrock Lite II board or the more expensive but better integrated
LP-PAN, so that it is possible to discover how useful a panadapter is
without a major financial commitment.

If a panadapter turns out to be useful, you can then later decide
whether to add the P3 or stay with the lower cost solution.

You can also use the Softrock or LP-Pan as a sub-receiver, but it's not
nearly as well integrated as the K3's internal sub-receiver.

Jack K8ZOA



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[Jim Cox]

There is no comparison between the 7800 and the display of the P3 or that
produced by LP Pan.   With the later 2, you have so much detail they are of
use, rather than just telling if the band is open.

It depends on what kind of radio operation your undertaking.  If you a very
serious Dxer or Contester, I agree the sub receiver is the way to go.  If
you only a casual DXer or Contester, I would pick the P3, softrock or LP
Pan.

Jim K4JAF


----- Original Message -----
From: "Barry" <[hidden email]>
To: <[hidden email]>
Sent: Wednesday, September 01, 2010 8:34 AM
Subject: Re: [Elecraft] Sub-rx or P3?

>
> I agree the sub-Rx by a long shot.  The way to get in and out of a pileup
> quickly is by following who the DX is working and figuring out the pattern
> of a split operation.
>
> I had a spectrum display in my 7800, and while it's pretty to look at,
> it's
> really just fluff.
>
> Barry W2UP ( DXCC TOTHR FWIW :.)  )
> --
> View this message in context:
> http://elecraft.365791.n2.nabble.com/Sub-rx-or-P3-tp5486303p5486960.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html 

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[Vic K2VCO]

For DX, the subrx is a huge plus. It is a tremendous help to listen to a split pileup in
one ear and the DX in the other. Yes, you can switch back and forth quickly without the
subrx, but at least for me the subrx method is much, much better. It is the difference
between getting the DX in a couple of calls and struggling for half an hour.

I have both. While the P3 also has some good uses for DX, like the ability to find that
one weak signal on a nearly dead band, the subrx is definitely higher priority.

For contesting, I find the P3 more useful. I don't use the subrx, and the P3 is good for
finding a clear spot to call CQ and to give you a general picture of where the activity is
on a band.

Everyone's style is different, but that's how I use these tools.

On 9/1/2010 3:30 AM, John Harper wrote:
> Just curious about opinions of CW DXers/contesters here on the list
> regarding these two options - which is likely to make the most impact on
> effectiveness?
>
> "Both" is not currently an option  ;-)
>
> John Harper AE5X
> http://www.ae5x.com/blog


--
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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[george fritkin]

I use my K3 in a diversity mode paired with an ORION ll.  My K3 is a single receiver with no P3.  You talk about flexibility and performance, as far as I am concerned this is it.  Two great receivers, and a third OK receiver, band scope, two transmitters so I can taylor the audio, and the ability to select three different linear amplifiers.  A little pricey but great flexibility.
George, W6GF




--- On Wed, 9/1/10, Vic K2VCO <[hidden email]> wrote:

From: Vic K2VCO <[hidden email]>
Subject: Re: [Elecraft] Sub-rx or P3?
To: 
Date: Wednesday, September 1, 2010, 8:28 AM

For DX, the subrx is a huge plus. It is a tremendous help to listen to a split pileup in
one ear and the DX in the other. Yes, you can switch back and forth quickly without the
subrx, but at least for me the subrx method is much, much better. It is the difference
between getting the DX in a couple of calls and struggling for half an hour.

I have both. While the P3 also has some good uses for DX, like the ability to find that
one weak signal on a nearly dead band, the subrx is definitely higher priority.

For contesting, I find the P3 more useful. I don't use the subrx, and the P3 is good for
finding a clear spot to call CQ and to give you a general picture of where the activity is
on a band.

Everyone's style is different, but that's how I use these tools.

On 9/1/2010 3:30 AM, John Harper wrote:
> Just curious about opinions of CW DXers/contesters here on the list
> regarding these two options - which is likely to make the most impact on
> effectiveness?
>
> "Both" is not currently an option  ;-)
>
> John Harper AE5X
> http://www.ae5x.com/blog


--
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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