I am watching the KX3 evolution with great interest. It appears to bear lots
of resemblance to the K3, but it is not clear to me where these two will
differ. Or, for that matter, how the KX3 will compare against some of the
other rigs around today.
Is there any place that shows, or can someone l
On Jun 5, 2011, at 8:49 PM, TF3KX wrote:
> I am watching the KX3 evolution with great interest. It appears to
> bear lots
> of resemblance to the K3, but it is not clear to me where these two
> will
> differ. Or, for that matter, how the KX3 will compare against some
> of the
> other rigs
John
--- On Sun, 6/5/11, TF3KX wrote:
> From: TF3KX
> Subject: [Elecraft] KX3 vs. K3 and other rigs?
> To: elecraft@mailman.qth.net
> Date: Sunday, June 5, 2011, 8:49 PM
> I am watching the KX3 evolution with
> great interest. It appears to bear lots
> of resemblance to
ng, I have
> yet to have my DC receiver overload on 40 meters when operating
> portable with full size low dipoles.
>
> 73
> John
>
>
>
> --- On Sun, 6/5/11, TF3KX wrote:
>
>> From: TF3KX
>> Subject: [Elecraft] KX3 vs. K3 and other rigs?
>> To: ele
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.
>>
&
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 o
rt
>>> 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
>>>
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
I will start by stating that the Texas DX Society has found the Kenwood TS-480
to have a receiver that is adequate for DXpedition and Field Day work. As
contest director of TDXS I am in complete agreement with this finding. I know
only what has been published on this forum about the KX3 which
/modification option. The KX3
has a lot of potential and the design is 98% there.
73
John
--- On Mon, 6/6/11, Dave KQ3T wrote:
> From: Dave KQ3T
> Subject: Re: [Elecraft] KX3 vs. K3 and other rigs?
> To: elecraft@mailman.qth.net
> Date: Monday, June 6, 2011, 6:40 AM
> Here are
Back in the late '60's I helped develope and test the first RACAL military SSB
Manpack (basically 3-8 Mhz).
It used an flexible tape whip approcimately 10ft long.
This was end loaded using a permeability tuned circuit internal to the rig.
Although it worked well, I don't believe there is enough ro
wers 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 wrote:
>
>> From: Dave KQ3T
>> Sub
mebrewers 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 wrote:
> >
>
On Mon, 2011-06-06 at 07:28 -0500, Mark Bayern wrote:
> ...a trail friendly radio ... doesn't have to worry so much about
> blocking locally produced strong signals. I wouldn't expect a TFR to
> do well as well as a K3 at a multi-transmitter contest site such as
> Field Day.
But I think Field Day
On Mon, 2011-06-06 at 08:10 -0700, juergen wrote:
> However from a communications effectiveness point of 20 watts is a
> much more realistic power level, especially for SSB QSO's.
The difference between 10 and 20 watts is only 3 dB, half an S-unit.
Compared to the 20-30 dB of QSB you often find
ear 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 p
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
>&g
I know many a contest station that would and have spent $1000's for an extra
3db. There must to a reason.
Keith, K5ENS
--
View this message in context:
http://elecraft.365791.n2.nabble.com/KX3-vs-K3-and-other-rigs-tp6443819p6446308.html
Sent from the Elecraft mailing list archive at Nabble.com.
World-class contest stations are a different animal. If the extra 3 dB
adds an extra 0.1% to the contact total, that could easily be the
difference between winning and coming in number 2.
But for the average ham a 0.1% increase in your total contacts is such a
small difference that you would neve
Agreed. And at that level of competition, operator skill makes a much bigger
difference in score than 3 dB of power. Sadly, many who try to compete at
that level just don't seem to understand this.
Bruce, N1RX
> World-class contest stations are a different animal. If the extra 3 dB
> adds an e
The KX3 (K3 Extremely Portable is how I think of it) does have 3db of
additional power compared to the intended market: 5w QRP portable.
The portable QRP market is where Elecrafts' roots lie, after all, so
it should be no surprise that the KX3 is aimed at that target. Having
an optional external 1
There is another way of looking at it-- how many additional contacts
would potentially be available by utilizing an increase of just 3db?
I don't know the answer but there is a somewhat analogous situation in
astronomy having to do with the brightness of stars. They are also
measured on a logarit
The 10W output of the KX3 can be increased to 100W via the amplifier for
mobile and portable operation. To increase the output from 10 to say 30W
will greatly restrict the battery life and I don't see any real advantage.
Either the KX3 is a QRP radio or notadding another 10-20W available on
ba
I can understand the advantage of even 1 db to a serious contester over
the period
of a lengthy contest but for my needs, and keeping in mind maximizing
battery power,
the 10w of the KX3, and even 5w, is fine. I have other rigs that are
capable of 100w
in the shack, but now that I'm retired I p
To try to put some meaningful numbers on the value of a few extra dB I
looked at some recent contest scores. Actually not at the scores
themselves but the number of Q's made. There is of course wide
variability in this. A lot appears to depend on whether it is
primarily a NA contest or interna
It all depends how close the desired signal is to the noise level.
Check out
http://www.ab7e.com/weak_signal/mdd.html
However, the original argument that 20 watts is better than 10 watts
seems pretty silly to me since you can carry that flag all the way up to
power levels that create their o
IMHO it's the need to shout louder than the other guys in a pile-up!
I've been DX and heard the roar!!
>> I know many a contest station that would and have spent $1000's
>> for an extra 3db. There must to a reason.
--
Dave G KK7SS
DN06ig Richland, WA
'59 Morris Minor 1000
'65 Sprite - in proc
Aye, and there's the rub of the matter.
I just spent 20 minutes surfing the web looking for the definition of
"QRP". Of the half dozen or so well known sites I visited, in the
US and abroad, the definition of QRP is 5 Watts CW and 10W SSB MAX. Not
20 if you got it, not 30 if running on an outboard
I've seen this kind of calculation before, and for some events, like
Field Day, it's clear that QRP can compete on scores quite
effectively. But that's using CW, and probably also PSK31. Dave's
numbers suggest that it might also be different for North American
contacts (for those of us within Nor
Interesting analysis Dave. Assuming everything is logarithmic, a 33%
increase in contacts for a 13 db power increase implies 7% more contacts
for 3 dB more power:
10^[(3/13) * log(1.33)] = 1.07
And 100% more contacts for a 25 dB power increase implies 8.7% per 3 dB:
10^[(3/25) * log (2)] = 1.08
Let's end the power/QRP discussion.
73, Eric
List moderator
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted b
31 matches
Mail list logo
