[Elecraft] Receivers?

[Barry LaZar]

Phil,
     I will take the given opportunity to disagree. Our Field Day 
operation uses all KX3s, QRP, That accounts for 3AB + a GOTA station. 
There have been times when we found one of our GOTA ops on the same band 
and in the same portion of the band. What we have found is that if the 
other radio is not in the same part of the band, you may not even know 
he is there.  However, you know he's there.  If he is far enough away, 
you could work through him. There is one caveat. We do have our antennas 
really spread out. Our GOTA antenna(s) can be any where from 200'-400' 
away depending on which of our many antennas are being used at the time. 
And secondly, all of our radios are using the 8 KHz offset. I was amazed 
at the demonstration the first time it happened. I would say that the 
KX3 can handle any intelligently crowed environment.

73,
Barry
K3NDM

------ Original Message ------
From: "Phil Wheeler" <w7ox at socal.rr.com>
To: elecraft at mailman.qth.net
Sent: 12/11/2015 6:23:11 PM
Subject: Re: [Elecraft] Receivers?

>Scott,
>
>I agree with all that Ron says -- and have the K2, K3 and KX3 .. and 
>like them all.
>
>Re "I am considering the KX3": The one caveat I would add, and others 
>can expand on (or disagree with) this, is that if you operate in a 
>dense ham environment like Field Day or with other nearby hams 
>operating on the same bands the direct-conversion KX3 will not be as 
>good as the two superhets because you may have more difficulty hearing 
>weaker signals with those strong, nearby signals at adjacent 
>frequencies.
>
>In Auckland this may or may not be an issue for you -- but as I recall 
>70% or so of New Zealand's population is in the Auckland area.
>
>73, Phil W7OX
>
>On 12/11/15 1:40 PM, Ron D'Eau Claire wrote:
>>Scott, the three rigs use different design formats:
>>
>>The K3 and K2 and conventional superhetrodyne formats with an 
>>Intermediate
>>Frequency in the H.F. range and crystal filters to set the passband. 
>>The K2
>>has an adjustable crystal filter and the K3 uses fixed crystal filter
>>bandwidths. The basic K2 bandwidth is established by the crystal 
>>filter
>>while the K3 adds an adjustable DSP filter after the crystal filter. 
>>(The K2
>>has an optional audio DSP for enhanced filtering.)
>>
>>Although you will often see Elecraft rig owners refer to "roofing 
>>filters"
>>the Elecraft rigs avoid them, using an I.F. in the H.F. range instead 
>>that
>>avoids a lot of the compromises involved in up-converting to a first 
>>I.F. in
>>the VHF range with a VHF "roofing filter" to set the initial 
>>selectivity.
>>
>>The KX3 is quite different. It is a high-performance direct conversion
>>receiver using phasing to suppress the unwanted sideband followed by
>>filtering of the resulting audio.
>>
>>I'm a casual, mostly QRP operator who avoids pile-ups (and so 
>>contests) and
>>enjoy all three. If I had to settle on one or the other I'd probably 
>>take
>>the KX3 as my first choice because of its small size, the 
>>"transparent"
>>sound of a direct conversion format and options such as the PX3 
>>panadapter.
>>My second choice would be my trusty and ever dependable 15 year old K2
>>simply because I'm basically an "analog" sort of guy. But I have no
>>complaints about the K3/K3S. I'm sure others who enjoy busting 
>>"pileups"
>>will have more to offer about the advantages of the K3/K3S.
>>
>>For detailed test comparisons check out the results published by 
>>Sherwood
>>Engineering on their web site:
>>
>>http://www.sherweng.com/table.html
>>
>>
>>
>>
>>-----Original Message-----
>>From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of 
>>Scott
>>Gillen ZL1CHM
>>Sent: Friday, December 11, 2015 1:09 PM
>>To: elecraft at mailman.qth.net
>>Subject: [Elecraft] Receivers?
>>
>>Can anyone compare the receivers in the KX3 versus K3 versus K2?  Is 
>>there a
>>significant difference?  I am considering the KX3.
>>
>>73
>>Scott
>>
>>N0HOK / ZL1CHM
>>Auckland New Zealand
>>
>>
>
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