http://elecraft.85.s1.nabble.com/KX3-vs-K3-and-other-rigs-tp6443819p6445894.html
Effective speech processing will be a given. A 30-W PA is purely
> All,
>
> The improvement in communications effectiveness of 20
> watts verses 10 watts is valid - much more than the 3 dB
> increase in power would seem to suggest. I have seen the
> same results as with my SG-2020 as was mentioned below.
> Part of the effectiveness of that particular radio is the
> VOGAD speech processor as well. A similar algorithm for
> the KX3 speech process might be something to consider
> later.
>
> A small 30W PA with antenna tuner that would mount to
> the back of the KX3 would be simply amazing. Include a
> larger rechargeable battery pack and it probably couldn't
> get much better - IMHO
>
> 73
>
> Gene K1NR
>
> K2 6Kxx
>
> On Mon, 6 Jun 2011 08:26:14 -0700
> Wayne Burdick <
[hidden email]> wrote:
>> We could offer a KXPA30 amplifier to deal with the need
>> for more power
>> in a much smaller size. But not anytime soon....
>>
>> 73,
>> Wayne
>> N6KR
>>
>>
>> On Jun 6, 2011, at 8:10 AM, juergen wrote:
>>
>>>
>>> Hi Dave
>>>
>>> The point you make about the added complexity is valid.
>>>
>>> However from a communications effectiveness point of
>> 20 watts is a
>>> much more realistic power level, especially for SSB
>> QSO's. Most of
>>> the Mil Manpacks use this output power level.
>>>
>>> I operate portable using mil HF manpacks with the power
>> varying
>>> between 20 and 30 watts. I also have a SGC2020. 95% of
>> the time on
>>> the first call I can get through and have the standard
>> cookie
>>> cutter qso's and move on. If you try and do the same
>> with 10 watts
>>> its very frustrating and much more of a struggle. These
>> are NA Q's
>>> not local stuff. 5 to 10 watts is good power level for
>> CW. For SSB
>>> 20 watts is far more effective, even with simple whips.
>> Everyone
>>> will say its only 3db, however that 3db makes a huge
>> difference when
>>> using simple antennas especially on SSB.
>>>
>>> While the AMP might be the answer, looking at the
>> projected images
>>> and size, it will be a huge hassle carrying another box
>> around. If
>>> you consider the size of Yaesu FT857, which runs a full
>> 100 watts of
>>> output and its design is very neatly integrated into a
>> tiny
>>> package, the KX3 with an external amplifier will be
>> awkward by
>>> comparison.
>>>
>>> A FT857 with some AA batteries was carried to the top
>> of Mount
>>> Kilimanjaro by HB9BXE. The operator successfully had
>> many qso at 20
>>> watts of output. He probably would not have packed a
>> KX3 and
>>> amplifier if it was available then.
>>>
>>> I dont see why a duplicate of the KX3's PA could mot
>> be offered as
>>> a piggy back box with another set of 8 batteries. I
>> would rather
>>> follow that option than the 100 watt linear option. It
>> certainly
>>> would be a lot smaller and portable than the 100 watt
>> PA. I am sure
>>> many homebrewers will explore this option.
>>>
>>> Anyway time will tell. There is always the
>> hombrew/modification
>>> option. The KX3 has a lot of potential and the design
>> is 98% there.
>>>
>>> 73
>>> John
>>>
>>> --- On Mon, 6/6/11, Dave KQ3T <
[hidden email]> wrote:
>>>
>>>> From: Dave KQ3T <
[hidden email]>
>>>> Subject: Re: [Elecraft] KX3 vs. K3 and other rigs?
>>>> To:
[hidden email]
>>>> Date: Monday, June 6, 2011, 6:40 AM
>>>> Here are a couple of additional
>>>> factors to consider.
>>>>
>>>> 1. Increasing the output power to 20 or 30 watts would
>> have
>>>> an impact on
>>>> either the weight of the KX3 (more batteries needed to
>>>> maintain a
>>>> desired battery life) or the battery life (the
>> existing
>>>> batteries would
>>>> not last as long at the higher power level).
>>>>
>>>> 2. It is much easier to add an external power
>> amplifier, if
>>>> desired,
>>>> than to significantly improve receiver performance at
>> a
>>>> later date.
>>>>
>>>> 73,
>>>> Dave, KQ3T
>>>>
>>>> On 6/6/2011 12:25 AM, juergen wrote:
>>>>> Hi Kristinn
>>>>>
>>>>> What i dont get is why people expect so much
>>>> performance from a
>>>>> so called portable rig. A rig designed for portable
>>>> operation generally uses poor antennas and is
>> optimized for
>>>> weight, size and battery life.
>>>>>
>>>>> While its nice having great receiver specifications,
>>>> you do have to be realistic about the real world
>>>> requirements that is placed on the receiver when
>> operating
>>>> portable.
>>>>>
>>>>> For me battery life, convenience and power output are
>>>> very important requirements rather than world beating
>>>> receiver specifications.
>>>>> I would gladly have 30 watts output over
>>>> ultimate receiver performance. Most military manpacks
>> run 20
>>>> to 30 watts for good reasons.
>>>>>
>>>>> 10 watts and a wire in the tree type of operation
>> does
>>>> not demand a receiver with 100db of IMD dynamic
>>>> range.
>>>>>
>>>>> If the KX3 does deliver incredible receiver
>>>> performance for a bargain price I wont say NO, however
>> I can
>>>> live with lesser receiver performance when operating
>> with
>>>> marginal antennas.
>>>>>
>>>>> What I would prefer to see is an antenna tuner that
>>>> will tune a 9 to 13 ft whip on all bands, or
>> alternatively a
>>>> end fed wire on all bands. A low noise figure receiver
>>>> is important when using short portable antennas.
>>>>>
>>>>> We all waiting for the KX3 tech specs with
>>>> baited breath. Time will tell whether we will get a
>> 10,000
>>>> dollar contest radio that fits into the palm of your
>> hand!
>>>> After all my years of operating, I have yet to have my
>> DC
>>>> receiver overload on 40 meters when operating portable
>> with
>>>> full size low dipoles.
>>>>>
>>>>> 73
>>>>> John
>>>>>
>>>>
>>>>
>>
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