K3 Question

[Don Rasmussen]

Assume a non-contester is looking at a K3.

There would be no need for a second receiver nor the
absolute selectivity of the K3. Aside from those
points, can anyone suggest how the K3 might compare to
the Kenwood TS870?

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[KK7P]

> Assume a non-contester is looking at a K3.
> There would be no need for a second receiver nor the
> absolute selectivity of the K3. Aside from those
> points, can anyone suggest how the K3 might compare to
> the Kenwood TS870?

K3 is new, '870 is at least several years old, possibly unknown history.
K3 synthesizer is quieter, and with selectivity options you're like to
have less listening fatigue.
K3 covers 6m.
K3 is smaller/lighter/more portable.
K3 will be getting new features over the next several months/years. '870
is what it is.
K3 makes it trivial - and fun! - to play with digital modes even if
you're not a digital modes person.  '870 requires computer, soundcard
interface,  etc. to even casually experience them.
K3 has manual notch in addition to autonotch/denoiser.
K3 has 8-band mic equalizer.
K3 has 8-band Rx equalizer.
K3 has better dynamic range.
K3 has lower power consumption.
K3 has excellent QSK.
If you have problems, K3 has excellent support.
K3 has...

73,

Lyle KK7P (who is admittedly biased)

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[.hank.]

Don Rasmussen wrote:
> Assume a non-contester is looking at a K3.
>
> There would be no need for a second receiver nor the
> absolute selectivity of the K3.
While the second receiver would be good in
a contest, I'd think it would be more beneficial
to the DXer who wants to listen to both the
DX freq and tune around the pileup to see where
to call ..... without having to switch VFOs.

And, yes, the 870's front end does fold up quite
quickly under very loud adjacent stations.  But
not as bad as the 706s and 7000s!

72  73    Hank    K8DD

--
---
If God intended you to be on single sideband,
he would have given you only one nostril.
- Steve, K2PTS (SK)
---

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[Terry Conboy]

At 11:41 AM 2007-08-23, Don Rasmussen wrote:
>Assume a non-contester is looking at a K3.
>
>There would be no need for a second receiver nor the
>absolute selectivity of the K3. Aside from those
>points, can anyone suggest how the K3 might compare to
>the Kenwood TS870?

If you operate 160m or SWL in the tropical bands, the phase-locked
dual receiver in the K3 could be beneficial for diversity (binaural)
weak-signal reception using two separate antennas.

73, Terry N6RY

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[AJSOENKE]

By non-contester would you include DXer?  A second receive channel to  
monitor the pack when your calling a dx station on an offset is  essential.
 
Al WA6VNN



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[Brett gazdzinski-2]

 I plan on eventually getting the 2nd receiver, as I think
all sorts of cool things can/will eventually be done with the K3
in respect to the diversity thing.

Maybe even a noise nuller type setup where you have a noise antenna
that picks up local noise and eliminates it.

Diversity itself would be great, 2 different antennas can
act very different under QSB situations.

I have actually switched between the G5RV and the vertical
antenna manually during slow QSB situations!

Brett
N2DTS

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Terry Conboy
> Sent: Thursday, August 23, 2007 5:49 PM
> To: Elecraft
> Subject: Re: [Elecraft] K3 Question
>
> At 11:41 AM 2007-08-23, Don Rasmussen wrote:
> >Assume a non-contester is looking at a K3.
> >
> >There would be no need for a second receiver nor the
> >absolute selectivity of the K3. Aside from those
> >points, can anyone suggest how the K3 might compare to
> >the Kenwood TS870?
>
> If you operate 160m or SWL in the tropical bands, the phase-locked
> dual receiver in the K3 could be beneficial for diversity (binaural)
> weak-signal reception using two separate antennas.
>
> 73, Terry N6RY
>
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>

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[Julian, G4ILO]

I'd order the second receiver in an instant if that option became a reality.

--
Julian, G4ILO K2 s/n: 392  K3 s/n: ???
G4ILO's Shack: www.g4ilo.com
Ham-Directory: www.ham-directory.com


On 8/24/07, Brett gazdzinski <[hidden email]> wrote:

> Maybe even a noise nuller type setup where you have a noise antenna
> that picks up local noise and eliminates it.
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[Vic K2VCO]

Julian G4ILO wrote:
> I'd order the second receiver in an instant if that option became a reality.

On 8/24/07, Brett gazdzinski <[hidden email]> wrote:
 > > Maybe even a noise nuller type setup where you have a noise antenna
 > > that picks up local noise and eliminates it.

If you order KXV-3 transverter interface with the K3, you get antenna
in/out jacks. This is very handy for connecting such things as bandpass
filters or noise cancellers. It allows you to insert something in the
receiver antenna path.

I have an MFJ noise canceller which is designed to work with a
transceiver. It has a slow, clunky bypass relay which takes it out of
the circuit when you transmit. Unfortunately, this relay only works (and
poorly, at that) with semi-QSK. I stopped bothering with it as a result.

However, with the MFJ connected between the antenna in/out jacks, the K3
takes care of the t/r switching.

The MFJ seems to work well with just its little whip for a noise antenna
(it has a connector for a bigger antenna if you wish). Although it does
not help with stuff like distant thunderstorms, it is effective for
locally generated noises, like ethernet birdies, plasma TV noise,
aquarium thermostats, power line noise, etc.

You need to diddle with the controls to null a noise. It doesn't always
work, but sometimes it is a lifesaver.
--
73,
Vic, K2VCO
Fresno CA
K3 ("James") s/n 0007
http://www.qsl.net/k2vco
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[.hank.]

[hidden email] wrote:
> By non-contester would you include DXer?  A second receive channel to  
> monitor the pack when your calling a dx station on an offset is  essential.
>  
> Al WA6VNN
Absolutely!  I miss my old Ten Tec Omni and the Corsair we used
to use where you could listen to both VFOs.

It was great when you were in a split pile-up and even in contests
when you are outside of the US on 40M ---- transmitting below 7100
on SSB and listening in the US phone band!

72  73    Hank    K8DD

--
---
If God intended you to be on single sideband,
he would have given you only one nostril.
- Steve, K2PTS (SK)
---

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