Hello Ed
I tried adding further attenuators to a low output sig gen several times in
the past and found that the enclosure leakage was higher than the output
signal. My solution was to place the sig gen several feet away in a deep
metal housing with very good coax and then use the attenuators
Wayne, etal:
I'm asking for someone else that has the K144XV (I don't).
With the addition of the K3EXREF and K144RFLK, and assuming you have
the TCXO-3, what is the expected freq. stability expected? The
K3EXREF is published at 0.05ppm. At 144-MHz, 0.05ppm would be 1.44x5
= 7.2 Hz.
That
Wayne, will the software to do this be available for Mac OSX?
73 de M0XDF, K3 #174, P3 #108
--
Ideas are like rabbits. You get a couple and learn how to handle them, and
pretty soon you have a dozen.
--John Steinbeck, novelist, Nobel laureate (1902-1968)
On 13 Apr 2011, at 21:31, Wayne Burdick
hope you guys at Elecraft stockpiled a mess of them - here comes the rush!
73, Ed - KL7UW, WD2XSH/45
==
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 144-1.4kw, 432-100w, 1296-testing*, 3400-winter?
DUBUS Magazine USA Rep dubus...@hotmail.com
Phil Hystad wrote:
I really have this great urge to get rid of all connecting cables just
like in the old Star Trek TV episode The Ultimate Computer (episode
#53, stardate 4729.4).
Meanwhile, back in Series 1, Mr Spock was still having trouble with the
small screen of his P3:
The more I have glanced through the specs for this device, the more
puzzled I have become. I grew up on signal generators that put out a
(good approximation to a) sine wave. This device is described as an RF
square wave generator, which I take to mean that the output wave shape
is a
I tested, as far as I could use my ears, but it is difficult to be sure (
especially being in Londodn, UK, and having S5-S9 noise on all usable bands), I
was hoping someone has tried a similar thing, or someone at Elecraft can
explain what is happening in such a situation in the radio.
E.g.
Do you have an anticipated price for the EX REF module?
-
Julian, G4ILO. K2 #392 K3 #222.
* G4ILO's Shack - http://www.g4ilo.com
* KComm - http://www.g4ilo.com/kcomm.html
* KTune - http://www.g4ilo.com/ktune.html
--
View this message in context:
As far as I know, no one on our staff has made a QSO on an XG3 yet.
But keep in mind that 0 dBm is only 30 dB below 1 watt. So if your 1-W
QRP rig is S9 at the receiving end, the XG3 would be about S3.
Suitable antenna design is left to the reader.
73,
Wayne
N6KR
Wayne would it be
Elecrafters,
i believe i zapped KIO3.
2 Symptoms:
I can't use the DTR and RTS lines for cw keying via my logging
software.
ACC will not switch on the external Transverter.
Any idea how to repair the board?
On the Elecraft K3 parts and Mods kits page i see REMIOUPGD, is this the
device i need
go look at the manual :
http://www.elecraft.com/manual/XG3%20Owner%27s%20Manual%20Rev%20B.pdf
- front page has BIG picture
73 de M0XDF, K3 #174, P3 #108
--
Sometimes I think we're alone in the universe, and sometimes I think
we're not. In either case, the idea is quite staggering.
-Arthur C
DM4iM wrote:
i believe i zapped KIO3.
2 Symptoms:
I can't use the DTR and RTS lines for cw keying via my logging
software.
ACC will not switch on the external Transverter.
Any idea how to repair the board?
On the Elecraft K3 parts and Mods kits page i see REMIOUPGD, is this the
Hello Bill,
How can I know whether the KIO3 in my K3 needs modification? I would like to
take this chance to get the modification while I place my order for Elecraft
gears very soon.
TNX 73,
Johnny VR2XMC
寄件人﹕ Bill W4ZV btipp...@alum.mit.edu
收件人﹕
Hi. What carrier power will the KPA500 put out for well modulated AM?
Thanks and 73
Steve WA2DTW
__
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Help: http://mailman.qth.net/mmfaq.htm
Post:
just got a used k2 with the atu in it !! sure is a promlem for me i set my
power at 5 watts. even into the dummy load it shows 9.9 for some odd reason .
my
other rigs have internal atus and work fine have you heard of any one else
having this prob.?. jim kc0dd thanks
little radios
Forgive me if I missed this, but the web site shows the available XG3 as
assembled. Can we anticipate a kit version at a later date?
Great product!
73,
Terry, W0FM
-Original Message-
From: Eric Swartz - WA6HHQ, Elecraft [mailto:e...@elecraft.com]
Sent: Wednesday, April 13, 2011
aandrei wrote:
I tested, as far as I could use my ears, but it is difficult to be sure (
especially being in Londodn, UK, and having S5-S9 noise on all usable
bands), I was hoping someone has tried a similar thing, or someone at
Elecraft can explain what is happening in such a situation in
KC0DD just got a used k2 with the atu in it !! sure is a promlem for me i
set my
power at 5 watts. even into the dummy load it shows 9.9 for some odd reason
. my
other rigs have internal atus and work fine
Maybe you have the wrong antenna selected (ant1 vs ant2) - check the ANT
1/2 button and
Good questions. I had them myself, especially #2.
Wes
--- On Thu, 4/14/11, John Ragle tpcj1...@crocker.com wrote:
The more I
have glanced through the specs for this device, the more
puzzled I have become. I grew up on signal generators that
put out a
(good approximation to a) sine
I assume this is a K2/10 with the KAT2.
It is unusual for the diodes in the KAT2 wattmeter to be damaged by a
static surge, but it can happen. I would first check D1 and D2 in the
KAT2. If they check good with an ohmmeter (normal diode check), then
the wattmeter in the KAT2 just needs to be
Presently it seems that the Trimble Thunderbolt is the only reasonably priced
reference oscillator available. When ordering one of these you are taking a
chance as they are refurbished and shipped from China. Some of these units are
better than others depending on serial number. Again, you
A square wave's frequency is the frequency of the fundamental component. In
the XG3 that's 1.5 to 200 MHz. As the manual states, the output levels are
calibrated for the fundamental frequency range - 1.5 to 200 MHz.
As you know, a square wave is, mathematically, simply a sine wave and
infinite
Even without an input (antenna QRN or a noise diode) you should see the noise
from your sound card's ADC. Nothing at all on the plot equates to me to the
settings being off, so I suggest patiently following N0SS's instructions on
EVERY setting.
Also understand that the Spectrogram does
That will be the same ratio as always, set by physics instead of the
manufacturer: carrier set for one quarter of the PEP rating. That
would be 125 watts carrier for 500 watts PEP.
It always seems to be too small.
In the old days of the Johnson desk kilowatt, that was 1 kW carrier
INPUT, with a
Sent from my iPhone
On Apr 14, 2011, at 10:41 AM, Guy Olinger K2AV olin...@bellsouth.net wrote:
That will be the same ratio as always, set by physics instead of the
manufacturer: carrier set for one quarter of the PEP rating. That
would be 125 watts carrier for 500 watts PEP.
It always
Wishful thinking? Yeah, probably, for the same reason Elecraft doesn't want
to get into the power supply business. There is a HUGE amount of
closely-held magic in both the precision oscillator and in the GPS
disciplined-oscillator business. Elecraft would have to devote Engineering
resources to
Thanks to all who responded. Turns out I have a bad KIO3 board.
73, Ross N4RP
On 4/9/2011 2:34 PM, Ross Primrose N4RP wrote:
I've recently lost the ability to communicate with my K3. I've tried it
on two different computers, both with real serial ports, and used two
different cables. I've
Always helps to include text ... :-)
My Ranger won't quite make 375w carrier. Do I have a problem? ;-)
I think the Elecraft amp will make 150w carrier. Hardly a big difference. But
enough for a good time anyway.
Not all Desks or KW-1s or similar transmitters are throttled back. Unless it's
On Thu, Apr 14, 2011 at 10:41 AM, Guy Olinger K2AV olin...@bellsouth.netwrote:
...In the old days...a reason those guys always sounded so loud, and for
how heavy that rig
was.
Ah yes. The guy who got me into ham radio, Mel W0AJU, had a fantastic
home-brew rig that made a kid's eyes pop out.
My incoming line voltage here is 248v. Also it is a restoration by
W4PNT and has some AM mods in it. And I would not be able to certify
that it wasn't 350. Bird wattmeters really ain't that accurate after
all. :) DX never know the difference, for sure.
73, Guy.
On Thu, Apr 14, 2011 at 11:53
On Thu, Apr 14, 2011 at 10:32 AM, Ron D'Eau Claire r...@cobi.biz wrote:
A square wave's frequency
Ron, I think John is aksing about the calibrated power (John, correct me
if I'm mis-stating here). If there are infinite harmonics each
with amplitude = 1/N, then 1/2 of the total energy will
Boy, this will be a good thing! I blew mine three weeks into the life
of #4725, and a replacement cost me north of $100, so a more rugged
design will be welcome. My radio is at Elecraft right now, and if there
is any sort of swap-out deal for radios still under warranty, I'd very
much like
Is this a lightning protection issue or what? What is the source of
the zappies?
On Thu, Apr 14, 2011 at 12:05 PM, Pete Smith n...@contesting.com wrote:
Boy, this will be a good thing! I blew mine three weeks into the life
of #4725, and a replacement cost me north of $100, so a more rugged
All XG3 amplitude references refer to the amplitude of the fundamental
frequency component only.
Bob, N6CM
On Thu, Apr 14, 2011 at 9:09 AM, Tony Estep estept...@gmail.com wrote:
On Thu, Apr 14, 2011 at 10:32 AM, Ron D'Eau Claire r...@cobi.biz wrote:
A square wave's frequency
Ron,
I will add this this morning.
Eric
On 4/14/2011 2:08 AM, Adrian wrote:
As far as I know, no one on our staff has made a QSO on an XG3 yet.
But keep in mind that 0 dBm is only 30 dB below 1 watt. So if your 1-W
QRP rig is S9 at the receiving end, the XG3 would be about S3.
Suitable
On 14 April 2011 06:14, Joe Subich, W4TV li...@subich.com wrote:
Why does the XG3 have an RS232 port and not a USB port?
Not again! USB is very operating system dependent and incurs a
significant overhead cost in licensing as well as software cost
for multiple operating systems.
The
For all the hoopla about the new signal generator Elecraft put the
inter-connect cable for the K3 to KPA500 on sale yesterday.As a buyer
of the KPA500 [on the July delivery list] I received an e mail from
Vicki @ Elecraft. I assume the other buyers did also. If you were
waiting to order
Are you perhaps using a straight key and a MONO plug? I experienced this with
mine until I replaced the mono plug with a stereo plug. It seems the K2 doesn't
like The ring and ground connections shorted. (As a mono plug obviously does.)
73 de Al, W2GZN
--- On Wed, 4/13/11, Ian Liston-Smith
Currently there are 34 listings on e-bay for Oven Controlled Xtal
Oscillators ranging from $14.99 to $359. But the majority of them
run about $45. I found this with a search for OCXO 10 MHz.
This where I bought my OCXO ($39.95). +/- 5xE-12 (.05ppm)
Most run on 12vdc and output +10 dBm
WHam727 wrote:
From www.elecraft.com : 1.5-1400 MHz; 1.5-200 MHz calibrated output
level. 12 frequency memories, computer controllable, -107, -73, -33 and 0
dBm output levels
In case anyone besides me wondered why the -33 dBm level was added, there's
an advanced RF gain calibration in the K3
The ftdi devices have free and open licence-free drivers for all
platforms.
Only as a serial converter using FTDI's own UID/PID. When one
needs to support a specific device, e.g., Elecraft XG3, it is
necessary to license and certify the drivers at substantial cost
before some operating
Question 1: The frequency is based on the period of the square wave, in
other words, the frequency of the fundamental. If you program a
frequency greater than the maximum 200 MHz, software automatically
selects the proper fundamental so that the harmonic comes out at the
desired frequency.
Yeah, just to prove those Italians on 40m really ARE 40 over 9...
Stacked 5 element yagis and push-pull 3CX5000A's.
Will be interesting to see if the phase noise is low enough to allow
us to run filter shapes down past -60 dB.
Zero dB will allow me to use a tuned rubber duckie per band for
My K3 has 2.8 and 2.1 8 pole filters in both main and sub receivers. Set up
for zero offset per manual. When I switch to 2.1 filter, I need to use the
Shift control to make receive audio sound approx normal. Perhaps 3/4 khz
shift. Is this normal? When using the 2.8 filters, no shift is
You apparently are changing the filter width with the WIDTH control -
which moves both the high and low end of the filter width, so it cuts
out a good part of the lows in the SSB received signal. To get those
lows back, you must use the SHIFT.
To make things easier, switch to the LO-CUT-HI
It's implicit in Alan's posting, but note that symmetrical square waves have
only odd harmonics. The even harmonics will be very, very weak, present at all
only because the square wave isn't quite perfectly symmetric.
Scott K9MA
Scott Ellington
Madison, Wisconsin
USA
On Apr 14, 2011, at
I am running K3 remotely using TRX Manager. When in the 2.8 filter the shift
display is centered on the TRX display, and display below shows 2800. When
switching to 2.1, the shift display is still centered. I did notice that
the width control slider moves up (by itself), and width display at
The image of the XG3 on the order form is now clickable and opens a high
resolution picture of the XG3 (1.8 MB).
The direct link to the picture is:
http://www.elecraft.com/images/XG3_1200%20.jpg
73, Eric WA6HHQ
www.elecraft.com
On 4/14/2011 9:34 AM, Eric Swartz - WA6HHQ, Elecraft wrote:
Someone asked about using the XG3 to measure the skirt attenuation of a
crystal filter.
If the phase noise is -105 dBc / Hz, then with a 500 Hz crystal filter
the filter skirts will disappear into the noise at about -105 + 10 *
log(500) = -78 dB. With a 2.7 kHz filter, it works out to -71 dB.
Alan:
One are where a square wave RF source can get you into trouble is 2nd
and 3rd order intermodulation measurements.
Mini-Circuits Ap Note 8 discusses the reason why.
http://www.minicircuits.com/pages/pdfs/AN8.pdf
I usually use an outboard low pass filter on my HP 8657A signal
Hi Jack,
You're right that when testing a wide-band device like an amplifier you
have to filter out the generator harmonics in order to get a valid
third-order IMD test. But when testing a narrow-band device like a
receiver the harmonics are normally not an issue.
Those Coilcraft low-pass
Its now up on the web site on the new XG3 info page:
http://www.elecraft.com/XG3/xg3.htm
73, Eric WA6HHQ
www.elecraft.com
On 4/14/2011 10:11 AM, Jim Sheldon wrote:
Eric,
would you please see that the XG3 utility program gets posted
somewhere on the site if it hasn't been already. Went
Eric, are there plans to make a OSX version?
73 de M0XDF, K3 #174, P3 #108
Success is the ability to go from failure to failure without losing your
enthusiasm. - Winston Churchill (1874 - 1965).
On 14 Apr 2011, at 23:25, Eric Swartz - WA6HHQ, Elecraft wrote:
Its now up on the web site on the
Alan:
Coilcraft is direct sales only - no minimum quantity for internet orders
and they are pretty good about free samples if you have a business name
and address.
Jack K8ZOA
On 4/14/2011 5:58 PM, Alan Bloom wrote:
Hi Jack,
You're right that when testing a wide-band device like an
Oh, remote controlled... That would be the app programmer's issue,
not Elecraft. TRX Manager does not appear to acknowledge any support
for Elecraft on their web page. Sort of whatever works, fine,
whatever doesn't, too bad attitude, if they even care. Just marginal
support for TenTec.
I
Hi Al,
You did say normally not an issue, but when making even or odd order
intermodulation measurements on a receiver the use of RF sources whose
harmonic content is significant can and usually will lead to invalid
results.
73,
Geoff
GM4ESD
On April 14, 2011 at 22:58 +0100, Alan Bloom
I don't know a thing about TRX Manager, but when operating locally, for voice
modes I default to Lo-Hi cut on the bandwidth settings and Shift-Width for CW
and Data modes.
--- On Thu, 4/14/11, kcflyers kcfly...@yahoo.com wrote:
I am running K3 remotely using TRX
Manager. When in the 2.8
Out in plain view: http://www.trx-manager.com/FTmane.htm
On Thu, Apr 14, 2011 at 7:53 PM, John and Judy Raydo kcfly...@yahoo.comwrote:
TRX Manager is highly customized and fully supported for K3. Not sure
where you looked.
Anyway, I now agree with you that shifting filter offset would just
You'll have the same problem if you NORMalise in SSB mode, then use
the XFIL button to select a narrower filter - it'll still be centered
on 1.50. It'd be nice if the NORMalise function for SSB mode could be
configurable, and if selecting other filters could, perhaps, adjust
the shift so that,
Iain, I'm going to forward your comments to Laurent at TRX Manager. Thanks.
John.
--- On Thu, 4/14/11, iain macdonnell - N6ML a...@dseven.org wrote:
From: iain macdonnell - N6ML a...@dseven.org
Subject: Re: [Elecraft] Need to shift 8 pole 2.1 filter?
To: Guy Olinger K2AV
Iain,
That is why it is easier to use the HI - cut knob to change filters in
SSB mode rather than the XFIL button.
The center frequency is automatically shifted along with the reduction
in the high end.
I have heard this problem many times, and there seems to be a lot of
resistance to using
Yes, I see it - read and weep if your needs are not present in that
set of commands that are provided for your transceiver. He is not very
specific about it.
For those who overlooked it, this is the bothersome quote for me:
Quote:
Note: Each transceiver may have only 20 but also 50 or more
Don, I'm running K3 via TRX Manager, and I don't have a HI cut control From
what I see, only have XFIL, Shift, and Width controls. Don't see a Hi/Lo
command set in programmers guide, either.
John.
--
View this message in context:
Hi Don,
Yes, that's what I do (on the very rare occasions when I change from
my 1.8kHz configuration and need to return). Unfortunately, though,
most rig-control programs don't have the HI and LO-cut controls (in
fact there are no CAT command versions of them, AFAIK!), so if you
can't physically
Laurent is usually very open to suggestions and does a great job
supporting the K3.
73
Greg
AB7R
On 4/14/2011 5:44 PM, John and Judy Raydo wrote:
Iain, I'm going to forward your comments to Laurent at TRX Manager. Thanks.
John.
--- On Thu, 4/14/11, iain macdonnell -
More re TRX Manager - the referenced window is NOT the main control screens
for the K3. There are two screens with virtually every command included in
the programmer's guide. Can't speak for other radios, but the K3
implementation is splendid. Re my note just above, I don't even see a Hi/Lo
That is only because TRX-manager does not do the math to shift the
filter center frequency.
It can easily be calculated from the current width and filter center
like what is done automatically for you inside the K3 when you turn the
Hi-cut knob. Yes, it is not provided as a separate command
I have put an inquiry into Laurent at TRX Manager. I think everyone that
uses his product has found him to be very responsive to suggestions. I was
a bit put-off by the implication that my initial inquiry on this topic was
only due to resistance in using the K3 features. Not easy to do when
There is a way to adjust DSP Filters using Hi/Lo in Trx-Manger. In the
levels screen for the K3 (button below the Preamp in the main monitoring
screen) there is a window that will display a button which switches between
Shift/Width and Low/Hi. That allows Trx Manger to adjust the K3's Filters
Cycles are oscillation measurements.
Mr Herz was a man who passed away many years ago.
I prefer the use of cycles, because they indicate the exact type of the
measurement, but I'm just an old geezer who prefers many aspects of the old
days.
Glad to hear that my selling of the old HP Analog
I use two 100 amp supplies here that are made by Walt Williams W5YUO They are
quiet and bullet proof, but if you want one you will have to come to Texas, as
he only sells local and only makes them on order.
They are very heavy, so shipping would be a problem...
Tom
N5GE
On Wed, 13 Apr 2011
I sympathize with Tom. We honor people by adopting their name for
measurements and thereby lose what the original designations provided.
Of course back in the 50's and 60's there were many who objected if we
didn't use the complete designation including the time as in cycles per
second, and so
John, the buttons I have below the shift and width sliders are and N, and
below them are I/II and /. Are these the buttons you mean?
--
View this message in context:
http://elecraft.365791.n2.nabble.com/Need-to-shift-8-pole-2-1-filter-tp6273972p6275123.html
Sent from the Elecraft mailing list
Not many people at all would understand the measure of inverse seconds.
Hz or cps are measured in 1/s increments.
Kevin. KD5ONS
On Thu, 14 Apr 2011 19:41:41 -0700, Ron D'Eau Claire r...@cobi.biz wrote:
I sympathize with Tom. We honor people by adopting their name for
measurements and
Just found it Never knew the slider/width caption was also a button.
Thanks a bunch!
--
View this message in context:
http://elecraft.365791.n2.nabble.com/Need-to-shift-8-pole-2-1-filter-tp6273972p6275127.html
Sent from the Elecraft mailing list archive at Nabble.com.
This is in response mostly to Guy,K2AV's post. I am ashamed to say that I
really didn't know better . Not having much experience with HF equipment I
just assumed that it was meant to be really noisy and just lived with it. :)
Of course this really annoys those around me so it tended to limit
Hi Geoff,
Most receivers have bandpass and/or low-pass filters in the front end
that would filter out the harmonics of a square-wave test signal. I
could dream up some unusual situations where the harmonics could cause a
problem, but normally it would not be an issue.
Alan N1AL
On Fri,
Samlex are not reliable? They are sold re-labled by Kenwood. My two
have been around for 2 decades, in constant use nearly every day. They
power everything in my shack. If you look hard enough, you can find
people with complaints about everything ever manufactured. I guess if
my Samlex
Perhaps one of the beta testers or Eric/Wayne would be kind enough to answer
the question in the subject line. I do not see a reference to a bail in
the draft Owner's Manual.
73 de K6SBA
David in Santa Barbara
__
Elecraft mailing list
Yes it does,
Bob, N6CM
On Thu, Apr 14, 2011 at 8:49 PM, David Inger ingerassocia...@verizon.netwrote:
Perhaps one of the beta testers or Eric/Wayne would be kind enough to
answer
the question in the subject line. I do not see a reference to a bail in
the draft Owner's Manual.
73 de
Hi All,
I just finished my KFL1-4. During setup, I'm trying to select 10.1 as
B2. But this band isn't an option; just 10.0. Which, since my tuning
range is 80Khz, wont let me cover the 10.1 Mhz band. The assembly
instructions clearly state that it SHOULD be an option - yet it isn't.
Am I
You are an old English-speaking geezer (or at least an American-speaking
geezer.) But the modern metric system (SI, the International System of
Units) tries to name derived units after people so as to avoid the
problem of cycle per second not translating well into other
languages. (In not
Yes. :-)
73, Eric
On 4/14/2011 8:49 PM, David Inger wrote:
Perhaps one of the beta testers or Eric/Wayne would be kind enough to answer
the question in the subject line. I do not see a reference to a bail in
the draft Owner's Manual.
73 de K6SBA
David in Santa Barbara
You mean like kilo Megacycles per second.
--- On Thu, 4/14/11, Ron D'Eau Claire r...@cobi.biz wrote:
From: Ron D'Eau Claire r...@cobi.biz
I sympathize with Tom. We honor
people by adopting their name for
measurements and thereby lose what the original
designations provided.
Of course
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