Sub Receiver jones...

[Jim AB3CV]

Listening to K5D last night made it obvious to me (I'm slow...) the
benefit of a sub-receiver. The exchanges that occur by the pursuers
are impossible to find by switching back and forth between pursued and
pursuer frequencies. I'm assuming that the pursued will take the next
call somewhere near the last one, maybe a bad assumption.

Maybe next holiday season...

73

jim ab3cv
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[Bob Naumann W5OV]

Jim,

Being in split mode and pressing *AND HOLDING* the REV button allows you
to listen on the split frequency until you release the REV button. Us
"old" Kenwood guys got used to the "T-F Set" button for this function.
It's not as good as having a dual receiver, but you can develop the skill
required to use it almost as effectively.

73,

Bob W5OV

> Listening to K5D last night made it obvious to me (I'm slow...) the
> benefit of a sub-receiver. The exchanges that occur by the pursuers
> are impossible to find by switching back and forth between pursued and
> pursuer frequencies. I'm assuming that the pursued will take the next
> call somewhere near the last one, maybe a bad assumption.
>
> Maybe next holiday season...
>
> 73
>
> jim ab3cv
> ______________________________________________________________
> Elecraft mailing list
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[w0mu]

And for us Yaesu users it is a real pain in the but.  I am surprised that
the K3 would not be able to do dual in band receive or dual watch as some
would call it.


"A slip of the foot you may soon recover, but a slip of the tongue you may
never get over." Ben Franklin
-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of [hidden email]
Sent: Monday, February 16, 2009 10:46 AM
To: Jim Miller
Cc: Elecraft Reflector
Subject: Re: [Elecraft] Sub Receiver jones...

Jim,

Being in split mode and pressing *AND HOLDING* the REV button allows you to
listen on the split frequency until you release the REV button. Us "old"
Kenwood guys got used to the "T-F Set" button for this function.
It's not as good as having a dual receiver, but you can develop the skill
required to use it almost as effectively.

73,

Bob W5OV

> Listening to K5D last night made it obvious to me (I'm slow...) the
> benefit of a sub-receiver. The exchanges that occur by the pursuers
> are impossible to find by switching back and forth between pursued and
> pursuer frequencies. I'm assuming that the pursued will take the next
> call somewhere near the last one, maybe a bad assumption.
>
> Maybe next holiday season...
>
> 73
>
> jim ab3cv
> ______________________________________________________________
> 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
>

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[Vic K2VCO]

Jim Miller wrote:
> Listening to K5D last night made it obvious to me (I'm slow...) the
> benefit of a sub-receiver. The exchanges that occur by the pursuers
> are impossible to find by switching back and forth between pursued and
> pursuer frequencies. I'm assuming that the pursued will take the next
> call somewhere near the last one, maybe a bad assumption.

Some DX operators (the ones I like) go through a pileup in one direction, moving up or
down a discrete amount each time. Then they either 'snap back' to the other end of the
pileup, or tune back the way they came. This is the best case, because if you are thinking
you can predict where to call accurately -- and only a small percentage of callers are
thinking!

Others hop around between two general areas. You can imagine them flipping back and forth
each time. If you detect this, it can be helpful.

Some operators pretty much listen in one spot, plus or minus a few hundred Hz. for a long
time. Pretty soon everyone learns where this is!

Sometimes a guy will just randomly pick someone to answer with no discernible pattern.
This can be frustrating.

You really do need two receivers to spot the pattern. It can be hard when the DX is
working stations that you can't hear.

I know that I have spent long periods in pileups without results until I get the pattern.
Then -- blam, one shot.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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[KK7P]

> ...I am surprised that
> the K3 would not be able to do dual in band receive or dual watch as some
> would call it.

Early in the design process of the K3 we explored various methods by
which we could obtain dual receive capability.  Such capability was a
basic design requirement.

Putting in a default "dual watch" system means an additional mixer and
synthesizer while providing limited flexibility.  A lower-performance
second receiver would not stand up to the severe operating conditions in
which we wanted the K3 to excel.  Either approach would add significant
cost to the basic radio, requiring people who did not want such features
to pay for them while denying a high-performance second receiver option
to those who might want one.

In the end, we concluded the best approach was an independent,
high-performance second receiver.  The KRX3 is the result.  It provides
the same performance as the main receiver.  It enables diversity
reception.  Users of the K3's diversity mode quickly realize its
benefits when chasing weak signals.

And the price is shockingly low!

Disclaimer: I am *not* a disinterested person in this :-)

73,

Lyle KK7P
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[Steven.Zabarnick]

Another solution is to get an LP-PAN panadapter. This gives a great
panadapter plus two PowerSDR receivers. This weekend I was able to monitor
K5D on the K3 and/or the primary PowerSDR receiver and listen to (and
watch) the pileup on the PowerSDR subreceiver. PowerSDR allows you to put
the pileup in one computer speaker and the DX in the other. Pretty cool!

I only wish that PowerSDR receiver un-muting after transmission was a
little faster. There is a little too much pause there.

Steve N9SZ

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[N5GE]

On Mon, 16 Feb 2009 10:31:20 -0800, you wrote:

Below...

>Jim Miller wrote:
>> Listening to K5D last night made it obvious to me (I'm slow...) the
>> benefit of a sub-receiver. The exchanges that occur by the pursuers
>> are impossible to find by switching back and forth between pursued and
>> pursuer frequencies. I'm assuming that the pursued will take the next
>> call somewhere near the last one, maybe a bad assumption.
>
>Some DX operators (the ones I like) go through a pileup in one direction, moving up or
>down a discrete amount each time. Then they either 'snap back' to the other end of the
>pileup, or tune back the way they came. This is the best case, because if you are thinking
>you can predict where to call accurately -- and only a small percentage of callers are
>thinking!
>
>Others hop around between two general areas. You can imagine them flipping back and forth
>each time. If you detect this, it can be helpful.
>
>Some operators pretty much listen in one spot, plus or minus a few hundred Hz. for a long
>time. Pretty soon everyone learns where this is!
>
>Sometimes a guy will just randomly pick someone to answer with no discernible pattern.
>This can be frustrating.
>
>You really do need two receivers to spot the pattern. It can be hard when the DX is
>working stations that you can't hear.
>
>I know that I have spent long periods in pileups without results until I get the pattern.
>Then -- blam, one shot.

Exactly!

73,

Tom, N5GE

K3 806
XV144
XV432

http://www.n5ge.com
http://www.swotrc.net

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