Sorry, guys, the KX3's internal ATU isn't going to be accessible for
patching through an external amp. It will safely handle 12 W (max KX3
power on most bands), but 20 W is pushing it.
I routinely work the world with 10 W SSB and marginal antennas, hence
the KX3's 10-W nominal power-output t
Edward KL7UW wrote:
>
> As an alternative, might you consider a small amplifier? TAPR is
> offering a 20w HF/6m amplifier called the "Pennywhistle".
> http://www.tapr.org/kits_pw.html
> drives with 1/4w and runs on 12vdc.
>
An external amp in a clamp-on case that fits on the bottom might be a
The particular brand of Lithium Ferro Phosphate battery that I got has the
brand name A123. That company talks about "nanophosphate" which presumably
means that some kind of nanotechnology is used, which may lead to higher
load current capacity. In any case, the Buddipole website and the
specificat
K7TV wrote:
>
> The battery can provide very high output current for a short time, I
> believe enough to power a 100 W transmitter briefly.
>
Yes, LiFePO4 has a high power density but not as high energy density as
LiPoly or the typical Li-Ion (laptop) batteries. It was chosen for the One
Lapt
Ummm. correct me if I am wrong, but it looks to me as if Leigh is referring
to Lithium Ferro Phosphate batteries (also known as Lithium Iron Phosphate),
while Jack is thinking Lithium Polymer. Not at all the same thing. If I
remember correctly, Lithium Polymer was involved in some published inciden
>
> Consider that IF you are taking your station on commercial aircraft, in some
> countries the carriage of LiPo batteries is very restricted, particularly if
> the pack is not enclosed within the device they power.
> I carry a VRSLA battery that is approved and so marked to meet the IATA A
I'd suggest LiFePO4 batteries, as they can source the current necessary for
the transmitter easily, and are safer in operation than Lithium Polymer.
They can be safely charged on a portable solar panel if you disconnect once
the voltage reaches 14.4v, and that's pretty much what the SLA charge
con
Must disagree with the limits of 10w on SSB! I have never mastered CW, thus
90% of my operating, which is ALL QRP is on fone. Yea, maybe there are
times a bit more power could help, but the speech processor should take care
of that. More like after all the effort and calling, and waiting, etc, w
My guess about the batteries is ease of field replacement, ability to use
standard AA cells instead of rechargeable if needed, and number of discharge
cycles. Li-ion batteries only have about 500 charge/discharge cycles. Anyway,
while LiPo or Li-Ion batteries may be lighter weight, I'm supposing
Lyle hit it head on. All QRP radios that really need punch lack don't have RF
speech processor or an equalizer. With speech processor, KX3 can sound like
a 4 times stronger radio. With poor mic that Kx3 can equalize, even more
than that. My guestimate 10W of KX3 may approach readability of IC-7000
ng systems (primarily ocean-going).
http://www.kl7uw.com/Case%20open.jpg
If folks want it? I can build it.
73, Ed - KL7UW
--
Message: 2
Date: Tue, 31 May 2011 10:47:52 -0600
From: "Hall, Nathon"
Subject: [Elecraft] Still lac
: 20
Date: Mon, 30 May 2011 13:07:44 -0700 (PDT)
From: AA1QG
Subject: Re: [Elecraft] Still lacking
To: elecraft@mailman.qth.net
Message-ID:
Content-Type: text/plain; charset=UTF-8
Ok, you win, I?ll order a KX3 when it arrives!
I have quite a few 5-10w portable radios gathering dust unless I plan
I'm so excited about the KX3! Finally, there's a successor to my beloved
IC-703.
AA1QG makes a very good point about SSB. The KX3 is clearly targeted
squarely at CW and PSK operators. I seldom have any problems being heard
with 10W when operating CW; even managing to break through DX pileups
with
Note that the KX3 will have an effective SSB
clipper/compressor/processor to give an average of at least 6 dB of
"talk power" without significant impairment of the speech quality,
making 10W seem like 25 or more to the receiving station.
73,
Lyle KK7P
> ...
>
> Please consider a KX3 Heavy Duty
K2, K3??? WTF.
Sent from my iPhone
.
>
> Please consider a KX3 Heavy Duty version, with a lithium battery and higher
> power output (25W) in a bigger box.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecra
: elecraft@mailman.qth.net
Sent: Mon, May 30, 2011 1:07:44 PM
Subject: Re: [Elecraft] Still lacking
Ok, you win, I´ll order a KX3 when it arrives!
I have quite a few 5-10w portable radios gathering dust unless I plan to
operate
CW. My trusty K2 has the 100W PA, which I usually run at 25-50 wat
Ok, you win, I´ll order a KX3 when it arrives!
I have quite a few 5-10w portable radios gathering dust unless I plan to
operate CW. My trusty K2 has the 100W PA, which I usually run at 25-50 watts
using a 14AH battery and an K1 tuner (which tackles 50W well in spite of being
rated lower). The
Wayne, biased??
Naah! never!
>> So it's really an apples/oranges comparison, in my heavily-biased
>> opinion :)
>> Wayne Burdick
>> Mon, 30 May 2011 10:47:47 -0700
--
Dave G KK7SS
DN06ig Richland, WA
'59 Morris Minor 1000
'65 Sprite - in process
'76 Midget - shared with my #4 son.
'06 Ho
Hi Terje,
The KX3 is a completely different radio from the Vertex 1210. It is
much smaller, lighter, and has far less current drain. It can even be
used hand-held. There's simply no room for a 20-W PA and/or a large
battery.
The 1210 is a channelized "man pack" radio, which definitely has i
As a portable user of the K2 and Vertex 1210, I was thrilled to hear about
the new KX3.
After reading the preliminary specs however, I think I´ll stick to my
existing radios. Why?
- 10 W is insufficient power for portable SSB operation on the lower bands,
at least in Europe. 20-25 W as the 1210
20 matches
Mail list logo
