Dual Receive on same band in K3s

[Irwin KD3TB]

I have a K3s without the sub-receiver installed. Is there a way to listen
to two different frequencies on the same band without a sub-receiver using
a stereo headset ?
Thanks.
--
Irwin KD3TB
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[Jon Zaimes AA1K]

If you set the filtering wide enough....

Jon

 

Hug your favorite tower every day, and always stay connected to it.

 

> On May 11, 2017, at 3:09 PM, Irwin Darack <[hidden email]> wrote:
>
> I have a K3s without the sub-receiver installed. Is there a way to listen
> to two different frequencies on the same band without a sub-receiver using
> a stereo headset ?
> Thanks.
> --
> Irwin KD3TB
> ______________________________________________________________
> Elecraft mailing list
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[Scott Manthe]

Nope, you will need the sub-receiver to do this.

73,
Scott N9AA

On 5/11/17 3:09 PM, Irwin Darack wrote:
> I have a K3s without the sub-receiver installed. Is there a way to listen
> to two different frequencies on the same band without a sub-receiver using
> a stereo headset ?
> Thanks.


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[Don Wilhelm]

Irwin,

You are asking about a "Dual Receive" capability, and for the K3 the
answer is that the KRX3 is required.  Two identical receivers which have
much more capability and flexibility than a 'Dual Receive' function.
The subRX and Main can even be on different bands if VFO IND is set on.

The KX3 and KX2 do implement "Dual Receive" - it is a concession for
split operation but is limited in range from the main receive frequency,
but sufficient for most Split operation situations.  There just is not
room inside the KX3/KX2 for a separate receiver.

73,
Don W3FPR

On 5/11/2017 3:09 PM, Irwin Darack wrote:
> I have a K3s without the sub-receiver installed. Is there a way to listen
> to two different frequencies on the same band without a sub-receiver using
> a stereo headset ?
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[Bill Frantz]

Consider a weak DX station working split with a big pileup and
compare the K3(S) and the KX3.

The K3 has a separate receiver for each ear. Each receiver has
its own set of roofing filters. The KX3 and KX2 have to cover
the entire frequency range between the DX station and the pileup
with one roofing filter.

If the DX station is weak, it is easy to have a strong station
in the pileup calling out of turn cause desense in the KX3 and
make it hard or impossible to hear the DX. This desense will not
happen in the K3 because of the separate roofing filters.

Yes, the K3(S) and KX(2,3) are almost equal, but this is one of
the areas where the K3(S) shows improved performance. In other
areas of difference. the K3(S) will be more convenient to operate.

73 Bill AE6JV

On 5/11/17 at 3:21 PM, [hidden email] (Don Wilhelm) wrote:

>You are asking about a "Dual Receive" capability, and for the
>K3 the answer is that the KRX3 is required.  Two identical
>receivers which have much more capability and flexibility than
>a 'Dual Receive' function. The subRX and Main can even be on
>different bands if VFO IND is set on.
>
>The KX3 and KX2 do implement "Dual Receive" - it is a
>concession for split operation but is limited in range from the
>main receive frequency, but sufficient for most Split operation
>situations.  There just is not room inside the KX3/KX2 for a
>separate receiver.

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[Augie "Gus" Hansen]

On 5/11/2017 4:21 PM, Don Wilhelm wrote:
> ...
> The KX3 and KX2 do implement "Dual Receive" - it is a concession for
> split operation but is limited in range from the main receive
> frequency, but sufficient for most Split operation situations. There
> just is not room inside the KX3/KX2 for a separate receiver.

That feature is called "Dual Watch" per the spec sheets.

73,
Gus Hansen
KB0YH

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[Vic Rosenthal]

The other thing you get with the additional receiver is diversity
reception. This is a truly wonderful feature that improves copy greatly
when there is QSB and some kinds of noise.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
http://www.qsl.net/k2vco/

On 12 May 2017 01:41, Bill Frantz wrote:

> Consider a weak DX station working split with a big pileup and compare
> the K3(S) and the KX3.
>
> The K3 has a separate receiver for each ear. Each receiver has its own
> set of roofing filters. The KX3 and KX2 have to cover the entire
> frequency range between the DX station and the pileup with one roofing
> filter.
>
> If the DX station is weak, it is easy to have a strong station in the
> pileup calling out of turn cause desense in the KX3 and make it hard or
> impossible to hear the DX. This desense will not happen in the K3
> because of the separate roofing filters.
>
> Yes, the K3(S) and KX(2,3) are almost equal, but this is one of the
> areas where the K3(S) shows improved performance. In other areas of
> difference. the K3(S) will be more convenient to operate.
>
> 73 Bill AE6JV
>
> On 5/11/17 at 3:21 PM, [hidden email] (Don Wilhelm) wrote:
>
>> You are asking about a "Dual Receive" capability, and for the K3 the
>> answer is that the KRX3 is required.  Two identical receivers which
>> have much more capability and flexibility than a 'Dual Receive'
>> function. The subRX and Main can even be on different bands if VFO IND
>> is set on.
>>
>> The KX3 and KX2 do implement "Dual Receive" - it is a concession for
>> split operation but is limited in range from the main receive
>> frequency, but sufficient for most Split operation situations.  There
>> just is not room inside the KX3/KX2 for a separate receiver.

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