Hi All,
I have a KX3 and am doing some SOTA activations.
I have obtained a 4S LiPo battery which is somewhere north of 16 V with
full charge.
I would like to get a DC-DC regulator as a more elegany solution than
series diodes.
I have searched and searched but no solid outcomes.
Anyone have
HI,
KX3, I have played about with the two mike settings BIAS (on/off) and
pgupdwn/ptt/off with a computer headset where the 3.5mm mike has a
stereo plug and no joy. Noted it initially as got the PTT error message
and TX stays open when plugged in. No amount of combinations of with VOX
on/off
G3PJT wrote:
Just an update on the no power problem I reported last month.
After checking a series of RF voltages using a checklist from Gary I
located the problem as no RF from the KREF3 board at J65 I then removed
the KREF board and all the cables, inspected board and re assembled the
KREF3
16V into a KX3 would be terminal to the KX3!
I think you might need to refer to
http://kr7w-sota.blogspot.co.uk/2013/01/qrp-ops-battery-power-fyi.html
that has a few links. (Talking about FT817 but same issue of over voltage).
Or you could just buy a 14.4V LiPo or take one 3.7V cell out of
Glen,
There a number of down converters from which you could choose to run the
KX3 off of a higher supply voltage - and they are inexpensive. Below is
the ebay listing for one such device. I have this one on order to test.
I have yet to get it and can not validate it yet. Do note that the
Ron,
I suggest you update your utility to the latest, 1.13.4.15 from the Elecraft
website here:
http://www.elecraft.com/K3/k3_software.htm
You are way behind on your Utility version.
73,
Bruce N1RX
I installed the KXV3A feature and attempted to run the 1 Milliwatt
Transmitter Gain Calibration
I put two 1N5400 diodes in series with each other (these are 3-amp diodes).
The diodes are physically side-by-side, with the leads connected in series to
keep the assembly small. This all fits nicely between two PowerPole connectors
and has a piece of heat-shrink over it. When connected
I will try a simple low dropout regulator for mine.
David
G3UNA
- Original Message -
From: Don Nelson n...@comcast.net
To: elecraft@mailman.qth.net
Sent: Monday, May 13, 2013 11:56 AM
Subject: Re: [Elecraft] [KX3] Boost Buck 13.8 V Regulator
Glen,
There a number of down converters
Thanks Bruce. I updated the utility program to the latest version but it
still fails the 1 Milliwatt test.
73,
Ron, K5HM
k5hm@gmail.com
www.qrz.com/db/k5hm
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bruce Beford
How about using a 4S LiFePO4 battery? From fully charged to 15% charge I
get from about 14 V to 12 V in RX and very little sag on transmit. Pretty
much the ideal battery for this radio in my opinion. They are rated to go
down to 10V or so, but since you don't get that much more and you can
Does the milliwatt calibration work if you use the procedure described on
page 50 of the D10 version of the K3 Owner's manual?
Dick, K6KR
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of K5HM
Sent: Monday, May 13, 2013
A workable general purpose solution is shown here:
http://ca.picclick.com/DC-DC-Converter-QS-1212CCBA-80W-Power-Supply-251036051706.html
I'm using it in a mobile setting to isolate the KX3 from the vehicle's
electrical system. Pretty good results, and no hash.
73,
matt W6NIA
On Mon, 13 May
Dick,
No, it fails either way. But I found a loose coax connection in the cable to
the dummy load. I will repair that and try again.
73,
Ron, K5HM
k5hm@gmail.com
www.qrz.com/db/k5hm
-Original Message-
From: Dick Dievendorff [mailto:die...@comcast.net]
Sent: Monday, May 13, 2013
Hi Dom,
When I plug in the mic of my PC-headset I can operate the vox without
any problem. MIC BTN=off and MIC BIAS=off...
When I measure the mic connection with a standard 3.5 mm. stereo cable
with two RCA plugs at the other end, I end up having no voltage on the
tip of the 3.5 mm plug and
I've searched a lot and can't find the answer so I'm asking the group.
Is it possible to use the iPad as detachable head for a K2, K3 or KX3,
using a direct connection (no Bluetooth / PC / wireless / Internet)?
I know the Apple Camera Connectivity Kit with some USB audio adapters give
you a
Thanks Peter,
I will play with a set of RCA terminated leads in a similar way and
measure voltages. It could be that the tolerance in the position of the
1st and 2nd ring on the mike plug are slightly different (was a cheap
headset), magnified there is about a 0.2mm difference between the one
I was thinking of doing iPad connectivity to Ki equipment but instead of using
the
connector cable, I would use Bluetooth. I looked into bluetooth adapters for
the
rigs. Something you can plug right into the back of the K3 (or, maybe P3).
So, I found a number of them of varying prices from
I'm having a problem running SO2R RTTY with my K3 KPA500 with writelog. I
am either getting an error on the K3 Screen or my KPA500 will fault. If I
run one radio there are no problems. Everything is fine.
This happens when:
I call CQ with the K3 (radio a), switch focus (radio b)to S P and call
Hello you all !
Currently I have my k3 connected via an Y DB15 cable to KAT500 and cable
and PR6.
Now I'm purchasing a MicroHam DigiKeyer that needs to be connected to k3
DB15 connector too and uses pins 1-4-5 for FSK and PTT.
At the moment I have no place to plug DigiKeyer DB15 connector to.
I
That should be OK but quite the rats nest. :) I would suggest either
an HD15 breakout board from Winford Engineering or see if you can find
one of the LDG RCA breakout boxes. I have one of these and it works
great for accessing ACCY connections.
73
Greg
On 5/13/13, ik1bxn ik1...@hotmail.it
Peter,
Bias is added to the tip via menu.
The voltage you read on the 1st ring is the pull-up for the PTT UP/Down
buttons.
See the schematic for the MH3 microphone (
http://www.elecraft.com/manual/MH3%20Rev%20A.pdf ).
It does show the connections to the mic plug.
I can not find the Mic jack
This is what I plan to do with my KPA500/KAT500 and the antenna switching
device that also needs connection.
Other possibilities are to control the PR-6 on another way (some switch
other than the DIGOUT1 line) or include the one wire it requires in some
other cable.
Be cautious of your Y
We've updated the Windows K3 Utility to revision 1.13.5.9 to correct a
problem creating the folder used to store the results of Tx Gain
calibration. The Mac and Linux versions didn't copy my bug.
http://www.elecraft.com/K3/k3_software.htm
73 de Dick, K6KR
Hi Andrew,
Apple is pretty restrictive with what / who / how the USB and Bluetooth
Interfaces get used in iOS. As a result, not much has been developed for the
wired or bluetooth interface for iPad/iPhone, WiFi, however, is another story.
I've been happily using the HamLog app with two
Super ! Fast and shape answer as usual !
Thank you all very much for support, I'll proceed this way so. I just asked
Elecraft italian dealer to supply me one original Y cable in order to
avoid any possible surprise.
Best 73
Giorgio - IK1BXN
--
View this message in context:
Hi K2 builders;
Could someone give my the datasheet or type number of this used encoder in the
K2 kit.
I like to obtain the mechanical dimensions from this part and his shaft ?
Thanks for the replys.
Regards Jean ON4AEF.
__
Elecraft
Anyone have an extra they can sell me?
73
Steve Roberts-W1SFR
Sudbury, VT
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Post:
Thanks George, I was looking for that schematic but probably didn't look
hard enough:-)
72/73,
Peter - PA0PJE
GDanner schreef:
Peter,
Bias is added to the tip via menu.
The voltage you read on the 1st ring is the pull-up for the PTT UP/Down
buttons.
See the schematic for the MH3
It seems that most PC headsets connect the tip and ring together, so
they can take bias from either, and that connecting the tip and ring
when bias is turned on in the KX3 creates some anomaly. Fortuitously,
the voltage on the ring, presumably pull-up intended for the PTT
input, seems to suffice
Hi Jeff,
When the P3/SVGA is in data terminal mode (Rx and Tx data windows), there is
increased traffic over the serial link between the P3/SVGA and the K3. This
is because the P3/SVGA data terminal mode uses the built in data decode
within the K3. While we have verified operation with HRD, we
Hi Jeff,
When the P3/SVGA is in data terminal mode (Rx and Tx data windows), there is
increased traffic over the serial link between the P3/SVGA and the K3. This
is because the P3/SVGA data terminal mode uses the built in data decode
within the K3. While we have verified operation with HRD, we
If anyone is interested, I just posted some items on QTH that may be
of interest to Elecraft and QRP enthusiasts.
http://swap.qth.com/search-results.php?keywords=ab7rfieldtosearch=call
73
Greg
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Here is another app using the Pigtail hardware:
http://dl2rum.de/rumsoft/RUMlog2Go.html
This is a logging tool with a dedicated K3/KX3 control integrated. There are no
audio functions provided, but you can run CW, FSK or PSK direct using the K3
build in features.
73 de Tom, DL2RUM
Hi Greg
Not trying to hijack the thread but which Winford Engineering DB15HD board
are you referring too there are 6 different ones.
73,
Fred/N0AZZ
K3 Ser #'s 6730/5299--KX3 # 2573--K2/100--KAT100
P3/SVGA--KPA500--KAT500--W2
-Original Message-
From: elecraft-boun...@mailman.qth.net
Hello Everyone,
When I first started work on Pigtail, the original plan was to make it a
wired accessory. With the assistance of a lawyer (required) I went through
the whole licensing and NDA process to make approved hardware and the very
first prototype was working on the bench a couple months
DC regulators have limited efficiency, take space and can generates hash. The
diodes lose 10% of energy when connected, and 0% when disconnected. The
DC-DC converters have stated 80-90% efficiency so they will lose more energy
than the diodes. No gains only losses.
The biggest problems with the
Detlaf: I'm unable to respond directly because I keep getting this response:
Delivery to the following recipients was aborted after 0 second(s): and your
e-mail address.
I've just tested the K3 Utility Terminal Page with 1.13.5.9 and it seems to
be working as it did before. Do you have K3
On Mon, May 13, 2013 at 9:35 AM, Fred Smith m...@mo-net.com wrote:
Not trying to hijack the thread but which Winford Engineering DB15HD board
are you referring too there are 6 different ones.
Depends what you want to do. If you want to plug it directly into the
back of the K3, you probably want
I have two Y-adapters cascaded on the back of the K3:
First Y:
Top Ten Devices Band Decoder (to switch DX Engineering antenna switch on
tower) PR6
Second Y:
MicroKEYER II (for FSK PTT)
KPA500 KPAK3AUX cable
I connected the wire to the PR6 to pin 11 of the DB15 going to the Top
Steve,
Try Universal Radio, they have the Heil 8 pin plugs which are better
quality than the standard ones, and less expensive.
73,
Don W3FPR
On 5/13/2013 11:53 AM, Stephen Roberts wrote:
Anyone have an extra they can sell me?
Thx Iain.
73,
Fred/N0AZZ
K3 Ser #'s 6730/5299--KX3 # 2573--K2/100--KAT100
P3/SVGA--KPA500--KAT500--W2
-Original Message-
From: dse...@dseven.org [mailto:dse...@dseven.org] On Behalf Of iain
macdonnell - N6ML
Sent: Monday, May 13, 2013 12:30 PM
To: Fred Smith
Cc: Greg; ik1bxn;
Thanks for the responses.
I've come across a possible solution from redpark.com, who sells an
iPad/iPhone-to-DB9 cable with some smarts inside, to provide either TTL or
RS-232 level communication directly with an external device.
I realize I will need a custom cable between this one and the K2's
I am looking for an assembled KPA100 in good working order.
Can be contacted at ac6dd ... yahoo.com.
Niko AC6DD
--
View this message in context:
http://elecraft.365791.n2.nabble.com/WTB-KPA100-tp7573648.html
Sent from the Elecraft mailing list archive at Nabble.com.
Mark,
this is exactly what I do. The LiFePO4 has a little more weight, but the cells
are robust
and have the correct voltage and probably can do more charge/discharge cycles.
I think the trouble with a voltage regulator is not worth the very little gain
in weight.
Regarding the Eneloops in
My new e mail address is w9...@twc.com. Old
address is good until May 2014
W9hak
--
new e-mail address is w9...@twc.com
old address good until May 2014 My
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The KX3 draws current from whichever supply (internal batteries or external
source) has the highest voltage.
/Rick
On Mon, May 13, 2013 at 1:25 PM, Dr. Werner Furlan fur...@gmx.net wrote:
Regarding the Eneloops in the KX3 I do not know if they take over the
supply if the external
power
You're right, Iain.
Measured it on my headset and indeed tip and ring are joined.
iain macdonnell - N6ML schreef:
It seems that most PC headsets connect the tip and ring together, so
they can take bias from either, and that connecting the tip and ring
Regarding using 16.7 V LiPo battery and regulator with KX3...
I have been quite successful using 4S LiPo batteries for 4 years now, first
with my FT-817, now with my KX3. My equipment is shown here:
http://kr7w-sota.blogspot.com/ Scroll down a bit for the battery stuff.
If you view the Flickr
Selling my Elecraft K3/100 with ATU.
The transceiver includes: KAT3 internal antenna tuning unit. KXV3 internal
IF output for a panadapter, RF in-out for a transverter, and a receive only
antenna connector. KIO3 internal digital and audio module for computer
and auxillary
terminals. FL3A 500 HZ 5
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