All,
I plan to use my KX3 for RX only, connected to a 2m downconverter; I want to
be 100% sure that no power gets transmitted because of a n accidental
manipulation; is it possible to inhibit the trasmitter ?
I didn't find any hint in the manual.
Marco HB9CAT
Easiest way is to set the power output to 0W -- this will prevent the KX3
from generating any RF.
73, Matt VK2RQ
On 02/10/2013, at 4:33 PM, HB9CAT hb9...@thezollingers.org wrote:
All,
I plan to use my KX3 for RX only, connected to a 2m downconverter; I want to
be 100% sure that no
Thanks Matt, that's what I do today.
Still, the potentiometer could accidentally be turned, I'm looking for a
harder lock, multi-op-proof.
Marco HB9CAT
-Messaggio originale-
Da: Matt VK2RQ [mailto:matt.vk...@gmail.com]
Inviato: mercoledì, 2. ottobre 2013 09:35
A: HB9CAT
Cc:
I had to calculate my radiation resistance to comply with the license
requirements on 600m.
My antenna is a base loaded inverted-L: 43-feet high and 122-feet
long*. Radiation resistance was taken from a EZ-NEC model as 0.83
ohms. Ground resistance was measured with an antenna analyzer as 18
If you have the packet cable kit, you can ground the ACC2 line and set the
ACC2 IO menu option to LO=Inh (see page 35 of the manual for details).
-Mooneer KG6AOV
On Tue, Oct 1, 2013 at 11:33 PM, HB9CAT hb9...@thezollingers.org wrote:
All,
I plan to use my KX3 for RX only, connected to a
Thanks Mooner,
I would have preferred a menu option but you are right; I do have the cable
kit, if a shorted 3.5mm jack will be seen as LO I could use that as a kind
of Hardware-lock.
Thanks for the hint !
Marco HB9CAT
Da: Mooneer Salem [mailto:moon...@gmail.com]
Inviato:
Any plans to export ?
From the website it looks like USA only.
Cheers - Dave (G0DJA)
- Original Message -
From: Scott Bastian
Sent: Wednesday, October 02, 2013 2:02 AM
Subject: [Elecraft] Side KX Parts for KX3
Howdy group, I am posting a link to my web page for replacement end
On my KX3 I have to push in and hold the PWR (KEYER/MIC control) button to
get to the power settings. So, unless you accidentally press and hold, and
you will then see PWR displayed, I can't see how it can accidentally be
changed?
Dave (G0DJA)
- Original Message -
From: HB9CAT
Cc:
Fair point Dave, but let's assume I want to modify the PBT I/II and press
the wrong button; that did happen to me a few times.
And particularly in a multioperator contest environment I must assume the
worst case and have a foolproof solution.
Missing a software setting I'll try the ACC2 solution.
I guess if you are letting oher people use the rig there's always a danger
that they might accidentally mess it up !!
I did hear a story about someone who got their 70cm radio back after a
contest, which had N-Type sockets for the antenna, where someone had forced
a PL-259 into the socket!
It works, plugging a shorted 3.5 jack into the ACC2 Module inhibits TX, the
TX in the display blinks to reflect that J
Marco HB9CAT
Da: Mooneer Salem [mailto:moon...@gmail.com]
Inviato: mercoledì, 2. ottobre 2013 10:25
A: HB9CAT; elecraft@mailman.qth.net
Oggetto: Re: [Elecraft] KX3 TX
Now all you need is a way to securly lock the 3.5mm jack plug in!
Experience of past contests/Special Event stations tells me that people are
strange creatures and do things that seem illogical. Like pulling out plugs
that they don't know what it does...
Anyway, I'll also make up a 3.5mm
Perhaps it will be enough to set menue to low=inh without plugging in a shorted jack at
ACC2. My K3 works that way because the INH input is low by default.
73, Win DK9IP
Am 02.10.2013 13:00, schrieb Dave:
Now all you need is a way to securly lock the 3.5mm jack plug in!
Experience of past
Thanks Win,
tried that, the inhibit is triggered only setting low=inh AND with the
shorted jack effectively plugged in.
I'd personally prefer Elecraft to add a menu item for this, but I realized
that it could potentially cause a pretty high number of trouble tickets /
returns because of broken
I like to think of an Inverted L as a vertical antenna and a horizontal wire
matching device. This is not entirely accurate, but is close enough for
contact distances over 2000 miles. An examination of patterns with EZNEC will
help you put this into perspective. The vertical portion is the
Long Shot, but I am looking to trade a MKIIG with separation kit, mic, LDG
remote tuner, data cables, etc for a KX3 or K2. Everything works fine. I
will pay shipping.
Mike
AI4NS
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Home:
You're slightly more QRP than you think. Efficiency is radiation resistance
divided by total resistance (not ground resistance). So your calculation
should be:
efficiency = 0.83/(18+0.83) = 0.044 Running transmitter output of 100w,
Total Power Radiated = 100*0.044 = 4.4w
EIRP = 4.4*1.48 = 6.5w
Everybody,
I see a real problem here. Please someone open up the authority,
Krause, and see what he says. His work is the basis of a whole lot of
what we have today.
73,
Barry
K3NDM
On 10/1/2013 10:55 PM, Bob Cunnings wrote:
Here's a link to the W8JI radiation resistance topic:
I just finished installing the Yamaha CM 500 headset for SSB in my newly
constructed K2. Using VOX, I find the microphone is so sensitive that it
switches to transmit based on the very quiet sound levels in the room. If I
switch the Vox delay from .1 to .4 sec, and hold the microphone completely
What do you expect Krause will tell you? That feedpoint impedance and
radiation resistance are the same thing?? I guarantee that it will not.
Did you not understand that feedpoint transformations transform the
combination of all impedances present at that point, and therefore leave
the
Excellent product! I am about to order my set.
Just a nitpick -
This group is full of people (including me) spoilt by excellent pictures +
detailed instructions for any kind of Elecraft related (dis)assembly.
Although very simple, I saw one page install instructions on the Side KX
parts and did
No. I expected someone who is an engineer and commands the language
better than I to explain that they are not the same and how they fit
together thereby adding a little enlightenment to this thread.
73,
Barry
K3NDM
On 10/2/2013 1:07 PM, David Gilbert wrote:
What do you expect Krause will
This comment made me do a search on Kraus.
I found one of his books online for free in the open source archive.org site
(this is the streaming link, they also have it in
PDF):http://archive.org/stream/Antennas2ndbyjohnD.Kraus1988/Kraus-Antennas-2nd.Edition-1988#page/n0/mode/2up
I though others
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John,
Thankyou for the correction in the formula. In fact the 18-ohms
measured by the antenna analyzer is the total resistance and includes
both radiation resistance and ground resistance, so my numbers are
correct, just not my explanation of them.
This was done three years ago and I
On 10/2/2013 10:36 AM, Barry LaZar wrote:
No. I expected someone who is an engineer and commands the language
better than I to explain that they are not the same and how they fit
together thereby adding a little enlightenment to this thread.
Since this is the Elecraft reflector, the
Can K2/10 be fed directly to an amplifier like the Ameritron AL 80B, without
hurting it?
73! Tomy Ivan KF7GC
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Marco,
I had the idea of using some CAT-command to do so, but couldn't find a
specific one in the manual.
There is, of course RX; and PCxx;, which would have to be sent
frequently. The VOX state command is commented as GET only, SET is
planned.
In Win-Test, for example, you could assign a
It is much easier to do with a K2 /100 dialed back to 5 watts of drive
Ariel NY4G
Sent from my iPhone
On Oct 2, 2013, at 6:35 PM, Tomy kf...@arrl.net wrote:
Can K2/10 be fed directly to an amplifier like the Ameritron AL 80B, without
hurting it?
73! Tomy Ivan KF7GC
INRAD reports that batches four and five are now in US customs! These
special-order filters have been backordered since early July and most of
them have already been sold. However, a handful are still available for
purchase on a first-come-first-served basis.
It's impossible to say how quickly
I'm sure this question has been asked before, but I can't find any information
about it.
In measuring the calibration of the S-meter in my KX3, I discovered it is
extremely
accurate, but only with the pre-amp engaged. With it engaged, S9 is indicated
at
exactly 50 uV (within the resolution
The magic INRAD 700Hz 8 Pole inobtanium filter ! Oh come on...
On 3 October 2013 00:51, Gary W. Hvizdak gary.hviz...@cfl.rr.com wrote:
INRAD reports that batches four and five are now in US customs! These
special-order filters have been backordered since early July and most of
them have
Tomy,
The K2/10 will have to be equipped with an amplifier keying circuit.
The keying circuits that have been publicized will handle a positive
keying voltage. Check the specs for the AL80B to see if the PTT voltage
is positive or negative.
If it is negative, you will have to add a keying
I'm sure Don Wilhelm can give the best answer to this one. The K2 puts
out 10ish watts max, so the output of the amp will be limited by this
drive level. Most amps - I'm not an expert at this - require a bit more
drive to get them to their ultimate capacity, so the K2 may under-drive
the amp
Here is a circuit for an amp key circuit that can be added to the K2:
http://www.elecraft.com/Apps/Amp_keying_ckt.htm
The stock AL80B has a low-voltage positive key line. Just to be sure -- perhaps it's been
modified -- it's a good idea to measure it before connecting it.
You will get a
I posted a query a few weeks back but neglected to say for which radio.
The KX3, FW 1.61, with CW in SSB seems to allow only full break-in
operation. This is a problem when using a transverter or amplifier not
designed
for break in.
Am I missing something, or is this in need of an FW
K2 enthusiasts,
I'm looking for a self-contained system for fixed audio, mike header
extender and sound card and really like the looks of Pauli Nunez, EA3BLQ's
K2DI v.III and K2DI-PCI boards.
Has anyone had any experience using this set-up,
and does anyone know a source for these
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