Does anyone recognise this pattern ..
k2 100W
kat100 (rev b board)
..
apparently intermittent error ...
initially hirefl current error on auto tuning ...
then overcurrent failure of power supply when auto tuning at high current ...
rx working fine ... in kat100 ant1/ant2 relay seems to be ok ..
Elecraft specifies the voltage supply range for the K2 transceiver to 9-15
Volts.
This range is suitable for lead or nickel batteries. Using Lithium
rechargeable batteries it gets somewhat problematic. The voltage range with
a single Lithium Ion (or Li-Polymer) Cell is from 4.2 V (fully charged)
Not specifically for RTTY/PSK, but I use the K3 internal serial
interface (via USB adaptor cable) and line-in/out with an external
soundcard, the emu0202, which connects via USB to the
computer. Especially nice since there are knobs for quick
adjustment of audio levels vs finding the
Wayne,
This is interesting as creation of a ham band on 461-478 KHz will be
submitted to WARC 2012 (resolution 1.23). The ARRL Experimental
Group (WD2XSH) already has been operating in the 495-510 KHz band and
has provisional permission to use 461-478 KHz while under study by WARC.
The K3
All quite logical - it seems you always have full power output (and then
some more too).
My best guess is that you have damaged the diodes D16 and D17 in the
KPA100, and you are always transmitting at full power - which may be far
in excess of 100 watts.
In other words, your KPA100 does not
Hi All
Once in a while I have an issue with my K2 on 15m and 12m in that
there is no receive and, according to the internal power metering,
next to no transmit. As I say this is intermittent.
The radio is currently in it's QRP format with an internal battery fitted.
However this issue crops
Nidge,
There is one link between 15 and 12 meters, and that is relay K6 which
should be set on both bands.
Those are latching relays, so you can set to the band, power down and
check the continuity at the relay pins.
73,
Don W3FPR
On 1/12/2012 8:04 AM, Nigel (Nidge) Smith wrote:
Hi All
Something for my wish-list at least, would be a P3 without its own
screen, with the P3SVGA's capabilities. I have plenty of monitors.
Presumably cost would be usefully lower than the P3 + P3SVGA. On the
other hand, I know that the folks at Elecraft are really busy, so...
If I really could
I would like to sign up for both of these items right behind Peteespecially
the KPA1500..
jimK3SW
On Jan 12, 2012, at 8:52 AM, Pete Smith N4ZR wrote:
Something for my wish-list at least, would be a P3 without its own
screen, with the P3SVGA's capabilities. I have plenty
Hello,
The remoterig http://www.remoterig.com/wp/?page_id=995 is to be used only
with TWO K3, or may I use it also if actually I have only ONE K3?
When Elecraft will be sending the K3 Remoterig twin and K3 front panel?
73,
Jorge CX6VM
K3 #4077
Any update on when the KAT500 will be available? I see on the reflector it
was projected for release last summer. I don't think asking the question
again now in Jan 2012 is inappropriate. There is a lot of interest among the
non-resonat antenna Elecraft community. Any information would be
Once again Don you're there to the rescue.
Thanks very much for the very quick response.
We have a saying over here when one doesn't see
the obvious and that is I Should have gone to Specsavers.
The bottom will be coming off shortly and a check done
Once again thank you.
Regards
Nidge
Hi Rolf,
Judging from the K2 schematic, there is no over-voltage protection, save
for the SB530 (D12) reverse protection diode which, in normal hookup,
won't do much until the bus hits ~30V; This is clearly meant for reverse
protection only and really that's taken care of with D10. I guess D12
16V is the specified maximum. We do not recommend operating above that level.
73,
Eric
www.elecraft.com
_..._
On Jan 12, 2012, at 1:49 AM, rolf rolfdl...@googlemail.com wrote:
Elecraft specifies the voltage supply range for the K2 transceiver to 9-15
Volts.
This range is suitable for
I´m looking for a 2nd K3 (very good conditions and w/out options is ok).
If someone wants to sell it during the hamcation i´ll be there to cash and
pick-up.
Pse answers on private.
PY2ADR/ZY2C
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Would it work to use 4 cells with a couple of series diodes to reduce the
voltage?
On 1/12/2012 1:49 AM, rolf wrote:
Elecraft specifies the voltage supply range for the K2 transceiver to 9-15
Volts.
This range is suitable for lead or nickel batteries. Using Lithium
rechargeable batteries it
Hi,
I have my fully loaded KX3 on order and have some questions about the power
supply. I've operated with my FT-817 powered from an 8Ah LiPol battery
pack, which has 3 LiPol cells in series and gives from about 12.5V when
full down to about 9.5V when fully drained.
The FT-817 gives just about
Hi to the group --
I have the following K2 accessories for sale -- Please contact me off the
list for details.
K60XV
KIO
KBAT - internal battery mount
Thanks -- Rick NU7Z
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Thomas Horsten wrote:
I have my fully loaded KX3 on order and have some questions about
the power
supply. I've operated with my FT-817 powered from an 8Ah LiPol battery
pack, which has 3 LiPol cells in series and gives from about 12.5V
when
full down to about 9.5V when fully drained.
As a better and even safer solution, Use LiFePO4 cell x 4 pack for no mote
than 14 Volts from the pack. . Fully charged each cell is 3.3 to 3.5 volts.
At 2.5 volts they are depleted. This type of Lithium rechargeable us also
far more tolerant of overcharging and overdischarge than original LiPo
Gents,
Last night I disconnected all the antennas and started to look at basics
within the shack because of my antenna problem, I decided that I should
check the basics with my dummy load and found an interesting thing
happening inside my K3.
What I found is that when directly connected to a
Don,
My first reaction is that compression of 35 is way too high. I never go
over 15 or so because of all of the background noise in the shack that
is picked up by the mic at high compression settings. Something of that
sort is perhaps what you are hearing .. maybe a fan or other hum-like
Hi Don,
First I agree that that is not a normal setting to run that high.
Normally I only have it in the range between 10 to 20 mostly at 15 like
you do.
I did the experiment as when the antennas were hooked with the RF
issue, I found that dialing down compression to under 10 sometimes
35 is too high of a compression setting. A setting of 35 can easily pick
up internal electrical noise in the radio, in addition to shack
background noise. This is much higher than normal compression setting
and results in excessive microphone input gain.
Its not unusual to hear some low level
The advance team for the HK0NA Malpelo Isl Dxpedition with K3s and
KPA500s is now on the island setting up and making a few QSOs. See:
http://hk0na.com/
73,
--
Eric
---
www.elecraft.com
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several months? Come on guys, we asked for this feature at LEAST a week ago!
;o)
Good grief. Does the Elecraft creativity well ever dry up?
Thanks again!
Terry, W0FM
-Original Message-
From: Eric Swartz WA6HHQ - Elecraft [mailto:e...@elecraft.com]
Sent: Wednesday, January 11,
Thanks Eric,
That is why I asked, now I can go back to RF hunting and fix my
antennas.
Don
~73
Don
KD8NNU
On Thu, Jan 12, 2012 at 2:04 PM, Eric Swartz - WA6HHQ, Elecraft wrote:
35 is too high of a compression setting. A setting of 35 can easily
pick up internal electrical noise in the
On 12 January 2012 17:02, Wayne Burdick n...@elecraft.com wrote:
The KX3 can put out up to 12 W. At this power level we recommend using a
13-14 V power supply.
On some bands the KX3 will put out 10 W with a supply voltage as low as 11
V. This is ideal for use with gel-cells and car or
DX'ers on the list may be interested in a summary of the past year by W1JR.
9 pages, well-written and definitely worth your time:
http://www.ae5x.com/blog/2012/01/11/2011-dxcc-year-end-review-by-w1jr/
John AE5X
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Thomas Horsten wrote:
Thanks for that info Wayne, basically the TX performance will be on
par with or better than the FT-817 with the Li-Pol cell (much better
when it's fully charged).
And of course the KX3's current drain in receive mode is far lower.
With backlight off it's as low as
Hello,
I've been playing around with AGC SLP (following Don's webpage), and
noticed that on digimodes I now get harmonics. This should be an
artifact of the K3 overdriving the computer soundcard, right?
I've put a signal at 800 Hz (on the waterfall) and I can see the same
trace at 2400, fainter
My 817 has an RX drain of 450mA on RX and 250 Squelched... This is only
useful in CW mode and lets me listen for Strong stations. Or listen on a
quiet frequency for a planned QSO if the prop is good. It really applies
though on 2M. And since all of these will apply on the KX3
Can you tell
Or use a step-down adjustable voltage regulator from
http://dimensionengineering.com/DE-SWADJ3.htm
Popular among the R/C crowd, I've used this regulator (set to 13.0v) for
over a year now without any problems to power my K2 from a older 4S LiPoly
battery (fully charged to 16.4v and a flat
That said, does anyone on the list know of a circuit that could step
up the voltage of the 12V LiPol cell to a regulated clean 13.8V
supply?
It would definitely have to be very clean, which probably means not
just well-regulated but also shielded. Switching regulators can be
I'm not an EE so maybe someone who is can answer my question. A
boost circuit certainly cannot have 100% efficiency, but how
efficient would it be? Some of the energy in the battery will be
consumed by the boost circuit and not available to the radio. So
then how does one evaluate whether
Hard to improve on this four page review by Phil Salas AD5X.
He specifically mentions that it integrates perfectly with the K3.
Another feather in Elecraft's hat.
Congratulations.
Brian
k1BRF
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My K3/10 is stuck in transmit. I recently changed power strip/surge protector
for the power supply to a strip that uses one of the pieces of equipment as a
control to turn all the others on and off. I have my Mac Mini as the control
piece of equipment with the monitor and printer power
Have you tried removing power from the K3 and then power it on?
73,
Bill
K9YEQ
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David Guernsey
Sent: Thursday, January 12, 2012 3:00 PM
To: elecraft@mailman.qth.net
Subject:
Being a switching circuit topology, boost circuits' efficiencies can well
exceed 50% and often 80%. Some are in the nineties. You can think of
them as a constant power circuit which will tend to consume more current
as the voltage drops to deliver the same power to the load. What this
means to
John Huggins, kx4o wrote:
For simplicity's sake, you are likely to be better off adding one more
cell in series and using a linear low dropout (LDO) regulator to
ensure
the voltage never exceeds 15V or whatever Elecraft says is the
practical
max.
This is a possibility, as long as the
Thanks for the suggestions. Seemed to have cured the problem (at least for
now). I sure do enjoy having this forum for getting help since I am somewhat
of a novice to the ham community and the K3.
73 de Dave KJ6CBS
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Eric Swartz WA6HHQ - Elecraft wrote:
The keyboard usb port h/w has been tested, but needs additional
firmware to be written before we add the external keyboard feature. We
hope to have it live in the next several months.
Will there be a facility to export high-resolution image files via the
Four page review, good photos and some very positive words.
Congratulations to Elecraft
Brian
k1BRF
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Hola Jorge,
I am currently using K3 Twin with only one K3. Still waiting for the
cheaper twin to be released (K3/0).
The remoterig RRC unit can be used in Program Mode 14: Elecraft K3
Twin on the remote side (Radio), and on the Control side Program Mode
4: Yaesu, Kenwood, Elecraft, with
Thanks Eric for this good news.
Ordered and look forward to post 21 February.
73
John. ZL1BHQ
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Brian
K1BRF
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Please help support this
Hi to the group -- bot the KIO2 and the K60XV are spoken for -- Thanks to
all that inquired.
I still have the battery case if someone needs one --
Rick NU7Z
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Mike Morrow wrote:
There is no practical value to ten watts of output, compared to five.
Why turn battery energy into heat in the voltage converter?
When a band is *open*, 5 watts can usually do the job, IMHO. But a lot
of operation takes place right at the noise floor, and the extra 3 dB
Hello Don,
Thanks for your advice. One thing I have noticed is that when I have the Lo
P on 10 and 12m, if I go to 15m and cycle through the inductors and
capacitors in the ATU menu it solves the problem. Go figure.
So thanks again, and when it dries out and warms up a little I might get
Not yet - Still at the current resolution. but we are looking at adding
that to the f/w.
Eric
---
www.elecraft.com
On 1/12/2012 1:50 PM, Ian White GM3SEK wrote:
Eric Swartz WA6HHQ - Elecraft wrote:
The keyboard usb port h/w has been tested, but needs additional
firmware to be written before
On 12 January 2012 23:59, Wayne Burdick n...@elecraft.com wrote:
Mike Morrow wrote:
There is no practical value to ten watts of output, compared to five.
Why turn battery energy into heat in the voltage converter?
When a band is *open*, 5 watts can usually do the job, IMHO. But a lot
of
THANKS Gus!
That´s my idea, to use it before Elecraft make available the very very cheap
K3/0 :-)
73,
Jorge
CX6VM/CW5W
-Mensaje original-
De: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] En nombre de Gunnar Widell
Enviado el: Jueves, 12 de Enero de 2012
I am looking in to the 4 circuit phone plugs and thinking about making my own
microphone. Heil used to have the HC-4 and HC-5 elements available by
themselves. I thought this would make for a neat mic combined with a compact
enclosure.
Has anyone had experience with wiring up the Heil elements?
Jack Smith shows that setting LIN OUT to 2 produces lower harmonics:
http://www.cliftonlaboratories.com/elecraft_k3_receive_audio.htm#Line_Output_Level
Leigh/WA5ZNU
--
View this message in context:
On 1/12/2012 8:16 PM, Steve KC8QVO wrote:
I am looking in to the 4 circuit phone plugs and thinking about
making my own microphone. Heil used to have the HC-4 and HC-5
elements available by themselves. I thought this would make for a
neat mic combined with a compact enclosure.
Fuggedabutit
Just an update on my progress so I can share what I have learned.
So as stuff was disconnected, I for some reason put one snap on choke on
the power leads to the K3, and when in TX using the dummy load it buzzed
like crazy.
I took one #31 ferrite snap on and put 7 turns on it and RF seemed to
12 W is nearly an S-unit stronger than 5 W.
Those who knew me in my NorCal QRP heyday, when 2 watts was full
power, may be chuckling a bit. But hey -- if the goal is to
communicate, at times a bit more power is justified. And as 12-W-
capable rigs go, the KX3 is about as frugal as it gets.
Gang
with all the traffic that goes through this list I thought I spotted
something
is it true that the KX3 will be able to rcv/tx in the new ( when we get
it )
470 Khz band
WOW
Bob K3DJC
57 Year Old Looks 27
Local Woman Reveals
Now that the KX3 is released and the SVGA adapter for the P3, when can we
look forward to the KAT500 being released for orders?
--
View this message in context:
http://elecraft.365791.n2.nabble.com/KAT500-When-tp7182647p7182647.html
Sent from the Elecraft mailing list archive at Nabble.com.
It's a slippery slope, Wayne... 8-)
72,
Bruce, N1RX
Wayne, N6KR wrote:
12 W is nearly an S-unit stronger than 5 W.
Those who knew me in my NorCal QRP heyday, when 2 watts was full
power, may be chuckling a bit. But hey -- if the goal is to
communicate, at times a bit more power is
Thanks Don,
I installed the SW that came with the Antenna Book.
My problem is I dont know how to model stuff so I dont have the
feedpoint impedance.
I am lucky someone is being kind enough to mentor me so I can learn this
stuff.
Cheers
Don
~73
Don
KD8NNU
On Wed, Jan 11, 2012 at 5:30 PM,
When the sun rose today and it seems that my K3 decided to put some hum on my
audio. During a quick SSB contact tonight on 80 meters I was told there was
hum on my audio. This surprised me because yesterday I was involved in two
different SSB QSOs where I was particularly interested in audio
12 W is nearly an S-unit stronger than 5 W.
Well, it's 3.8 dB vs. the 6 dB an S-unit requires, so if 60 percent
is **almost** as good as 100 percent I guess the quoted statement is
true.
I've played this radio game too, since the mid-1960s, and you can't BS a
BS'er! I've learned enough to know
Hi Bob,
I wasn't paying close attention, but I thought I read that the KX3 will
cover the upper half of the MW band and could be made to cover the rest
of the band in the future. Hopefully, somebody with a better memory
than mine will jump in and correct me. The thought of receiving the
Hi Ken,
I appreciate your enthusiasm for coverage of this range. There's not
quite a free lunch here, though. The KX3 will receive down to about
300 kHz, but there's a moderate-slope high-pass filter in the T/R
switch to prevent PIN-diode IMD due to high-amplitude LF signals. So
the
Don,
I gave you the antenna feedpoint impedances for a 2 wavelength loop and
a 4 wavelength loop from L B Cebik's simulations. Those impedances are
as close a one might get.
73,
Don W3FPR
On 1/12/2012 9:39 PM, gold...@charter.net wrote:
Thanks Don,
I installed the SW that came with the
Mike wrote:
12 W is nearly an S-unit stronger than 5 W.
Well, it's 3.8 dB vs. the 6 dB an S-unit requires
6 dB is the IARU recommendation, but when we were trying to decide
what level to use, we consulted various references and looked at lots
of receivers. They were all over the
Receive, yes. Transmit is theoretically possible but I can't say if/
when. Yet.
73,
Wayne
N6KR
On Jan 12, 2012, at 6:24 PM, riese-k3...@juno.com wrote:
Gang
with all the traffic that goes through this list I thought I spotted
something
is it true that the KX3 will be able to rcv/tx in
Right! Tht's what I remember reading! Thanks Wayne.
I assume the highpass filter starts working just below 160m?
73 - Ken
On 12/01/2012 10:13 PM, Wayne Burdick wrote:
Hi Ken,
I appreciate your enthusiasm for coverage of this range. There's not
quite a free lunch here, though. The
After weeks of my rf dropping on all bands on my ELECRAFT K2/100 serial
#4670. I now have no rf power out on 10 thru 17 meters and 20 meters has
about 5 watts . 30 thru 80 meters has about 25 to 30 watts out . What do I
check??? Where did 10 thru 17 go? My receive is great on all bands
living next to a hospital with loads of switchers LF has become
pretty useless but for some reason the 500 K band is a QRN free zone
the TX/rcv
rig would be fantastic
of major interest to the many 600 meter band enthusiasts
Bob K3DJC
On Thu, 12 Jan 2012 19:13:23 -0800 Wayne Burdick
Buddypole sells 14.4 volt lithium battery packs that would be perfect for up to
full power for the KX3.
Allen Patterson, KC7SYR
Sent from my iPad
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On Jan 12, 2012, at 7:46 PM, Ken Alexander wrote:
I assume the highpass filter starts working just below 160m?
Correct.
Wayne
73 - Ken
On 12/01/2012 10:13 PM, Wayne Burdick wrote:
Hi Ken,
I appreciate your enthusiasm for coverage of this range. There's
not quite a free lunch
IMX, the best remembered lessons are learned the hard way. I prefer to
call it the interesting way, Hi!
73,
Ron AC7AC
-Original Message-
Just an update on my progress so I can share what I have learned.
So as stuff was disconnected, I for some reason put one snap on choke on
the
The Heathkit HW-8 was a very popular rig at a 'whoppin' 2 watts output. And,
like many, I built a small amp that would produce between 10 and 15 watts
when the occasion arose.
But many, many a contact was made with that 2 watts output and a simple
vertical ant.
Ron AC7AC
-Original
I have one of the 4 cell Buddipole Li nano-phospate batteries and it is great.
I use it with the KX1. I have also used it for little things here and there
such as testing the screwdriver antenna (powering the screwdriver motor) and
other things. It seems to deliver whatever power you need
Wayne,
First of all I heard you say the KX3 will receive down to 310-KHz but
nothing about transmitting. Can it transmit below 500-KHz like the
K3? As far as sensitivity drop with freq. I assume an external
preamp could compensate for this.
I would be thrilled if the KX3 could do 1mw output
It is damnably difficult to radiate *much* power on 600 meters unless
one has a lot of transmitter and real estate for antenna and ground.
The SCR-578 and AN/CRT-3 WWII 'Gibson Girl' lifeboat emergency hand-crank
transmitters (500 kHz, A2) and other later emergency lifeboat stations
typically
Wayne has told us that receive is possible on those frequencies.
No official word has been given about transmit capability on those
bands. We will have to wait and see and one perimeter is the setting
0gg KDDSP2
On 1/12/2012 9:24 PM, riese-k3...@juno.com wrote:
Gang
with all the traffic
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