Why not just use the two receivers in the K3 ... one using the main
antenna port and the other using the RX antenna antenna port. Take the
output from the LINE OUT port and feed it into a computer sound card to
record the resultant audio in stereo. You can then compare anything you
want by l
Hi all,
I have just finished building and testing my KPA100 kit, and the power
output seems low (87-89 Watts) on 10, 12, and 15 meters. Is this
typical? I have triple checked that the parts are installed properly
in the 10-15m low pass filter stage, and everything looks good there.
After
I would try a chart recorder in this arrangement; there's no mistaking which
channel is which. Of course use a modern version using pc sound card then
you can squash up or expand the results for examination.
David
G3UNA
> Alas, after years of doing A/B manual coax switch tests, I have given
I have my K3 completed for all but this part. I ran the K3 utility. At this
point I don't have a signal generator to run this test.
How important is this?
Thanks
Chris W7cth
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This is one of the main reasons I got re-involved in ham radio after many
years, and why I chose the K3 (after several years playing around with Yaesu
rigs). I live in Southern California, and I know that some day -- it's a matter
when, not whether -- we will have The Big One. I know that there
> - Bulletproof receiver
Given some of the troubled spots in the world today, let's hope no one
takes that literally :-)
73
--
Joe KB8AP
On Aug 28, 2010, at 8:12 PM, Wayne Burdick wrote:
> Most of our customers choose the K3 for its contesting or DX
> performance. But with all the world-wide
Good Evening,
Fall is definitely in the air. The temperature got up to 62 today and the
leaves of a few trees are falling. I have seen a few color changes too. Split
wood is stacking up in the forest but it needs to find its way home and into a
stack before the rainy season begins. Foreca
I'll venture to say that the K3 uses less power in receive mode than power
wasted by my regulated power supply.
Steve
- Original Message -
From: "Grant Youngman"
To: "Elecraft Reflector"
Sent: Saturday, August 28, 2010 11:27 PM
Subject: Re: [Elecraft] Some thoughts on the K3 as an
em
Sounds like a thought model for a good commercial. Most of us that own this
thing, know most of this pretty well :-)
Grant/NQ5T
On Aug 28, 2010, at 10:12 PM, Wayne Burdick wrote:
> Most of our customers choose the K3 for its contesting or DX
> performance. But with all the world-wide floodi
Most of our customers choose the K3 for its contesting or DX
performance. But with all the world-wide flooding, earthquakes, and
heat waves and power-outages we've seen this year, I'm reflecting on
how the K3 can serve as a flexible station for emergency communications.
Here's a brief list o
The straight key is a KK1, sorry for the "fat fingered" typo.
73,
Don W3FPR
On 8/28/2010 10:56 PM, Don Wilhelm wrote:
>I have found additional items from the estate of Roger Sturtevent KI4 NGL.
>
> --N7VE (Dan Tayloe) SWR Indicator/Bridge kit (unbuilt). The kit price
> is $15, I am asking
It's even better than that. I received my notice, as you did, and three days
later I had the P-3! I think they are under promising, and over-delivering.
My P3 is #302 and my order date was early June. I received mine on
Thursday. Chuck K4SC
--
View this message in context:
http://elecraft.3
I have found additional items from the estate of Roger Sturtevent KI4 NGL.
--N7VE (Dan Tayloe) SWR Indicator/Bridge kit (unbuilt). The kit price
is $15, I am asking for offers of $10 or more.
--Genesis G5-40 transmitter Kit plus LPC5 bandpass/T-R kit - kit price
is more than $50. Asking for
Pete Smith N4ZR wrote:
>
> I guess my analog roots are showing - I have grown up used to running RF
> gain full on, and turning off AGC when I had to ride the RF gain. But I
> notice that, as in an analog radio, the S meter is effectively disabled
> when you turn the RF gain down very far.
Hi all,
I have new field-test K3 firmware ready with improvements that may be
of interest to those using a DVR (KDVR3 option) or the K144XV 2-meter
module.
Details:
* * *
* DVR TRANSMIT MONITOR SEPARATELY ADJUSTABLE: Applies
to TX message play as well as TX playback of the 90-second loop.
Thanks, Lyle. This thread can end. Thanks for the tip on the audio limiter.
Bill W5WVO
--
From: "Lyle Johnson"
Sent: Saturday, August 28, 2010 23:07
To: "Elecraft Reflector"
Subject: Re: [Elecraft] Did I blow something up?
> This is normal operat
This is normal operation.
Also, note that there is an audio limiter that you can aset which is
active only with AGC off. See the manual for details.
73,
Lyle KK7P
>> I think I might have blown something here, leaving the AGC
>> turned off and then having a strong local signal come through.
--
From: "Bill VanAlstyne W5WVO"
Sent: Saturday, August 28, 2010 2:58 PM
To: "[Elecraft]"
Subject: [Elecraft] Did I blow something up?
> I think I might have blown something here, leaving the AGC
> turned off and then having a strong local signal
On Sat, 28 Aug 2010 22:41:47 +0100, David Cutter wrote:
>This brings me nicely to the final bit of the puzzle: say, in a given
>location, you want to set up your own personal outdoor lab to make these
>measurements comparing various solutions. How do you create a constant
>noise source *which
I think I might have blown something here, leaving the AGC turned off and then
having a strong local signal come through. on frequency.
Setup: There is no KRX3 2nd receiver. I have a Heil headset plugged into the
back, as well as stereo computer speakers plugged into the back.
Here is what ha
Thanks to Bill and everyone else for their suggestions. I implemented
N1EU's AGC settings - not much different from the defaults, but a
little, and the receiver seems quieter. Also switched off the
peak-reading S meter, and the S-meter indication on a dummy load is now
zero. That may be the
This brings me nicely to the final bit of the puzzle: say, in a given
location, you want to set up your own personal outdoor lab to make these
measurements comparing various solutions. How do you create a constant
noise source *which will most effectively demonstrate* the performance of
one c
Seems to be something like 60-80 ma extra running DSP on vs DSP
bypassed on battery.
With DSP you should be able to toggle between three modes by tapping
display: normal, DSP and voltage/current. In the DSP mode, probably
showing C something nr, do a series of holds on BAND+ until you find
dSP
There is a reduced power mode for the DSP in bypass mode. See the
KDSP2 manual for details.
73,
Lyle KK7P
> Can the DSP be turned off to reduced current drain when operating portable
> from a battery ???
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H
The weekly Elecraft SSB net will meet tomorrow (8/29/10) at 1800z on 14.314
MHz. I will be net control from western Oregon, and I will try to swing the
antenna in multiple directions to get as many of you as I can. See you then.
73,
Phil NS7P
_
Hi all.
I am on page 30 of the K1 manual where you hook up a 12v power supply and
take some readings in 4 different places.
Everything was OK but the reading off of P1 pin 16. It is supposed to be
(Supply - 0.3 V) and I got 9.33 volts.
Any clue what I should check or do?
Thanks all.
73 de W2EEC
E
The DSP unit in the K2 greatly increases the current drawn in rcv mode.
Can the DSP be turned off to reduced current drain when operating portable from
a battery ???
TNX,
73, Fred - KT5X
K2 # 0700
K3 # 0144
ATS3B SOTA radio
__
Elec
Here is a short "amateur" video of the Elecraft booth at the Boxboro ARRL
Hamvention today
http://www.youtube.com/watch?v=mC6Bxd0BkvE
Dave N1IX
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On Sat, 28 Aug 2010 11:59:21 -0700 (PDT), Wes Stewart wrote:
>Equally silly (and applicable here) is measuring a device in a 50-ohm
>environment and trying to determine attenuation, when in actual operation,
>neither the source or load impedance is known.
Exactly. It is the 50 ohm environment t
P3 serial 320 up and running. I don't remember the date in June that I
ordered it.
I added KXV3A and did the IF modification at the same time. I was quite
pleased when I hit the K3 power button and signals were visible immediately
on the display.
Good job Alan.
AE6WA
Mike Scott
Tarzana C
I have used the P3 with the K144xv.
Bill
K9YEQ
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Radio Amateur N5GE
Sent: Saturday, August 28, 2010 7:10 AM
To: Elecraft
Subject: [Elecraft] [P3] P3 and K144XV
Does the P3 Displa
I am reminded of a time in my career when I was a member of a Components and
Materials Department. We had experts in a variety of fields including, failure
analysis, NDT, chemists, materials scientists, metallurgists, etc. I was the
RF/uW guy and had a “private” lab with over a mega-buck worth
On Sat, 28 Aug 2010 13:38:59 -0400, Edward Dickinson, III wrote:
>Give www.w4mq.com a try!
Very slick! Now, if it can hear me from 2,500 miles away. :)
73, Jim K9YC Santa Cruz, CA
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Alas, after years of doing A/B manual coax switch tests, I have given
up on that exposing anything better than 10 db differences on anything
other than stable local signals. And that is suspect because it is
often ground wave, which bears no resemblance to sky wave.
I built a 60 hz switch which u
Jim -
Give www.w4mq.com a try!
73,
Dick - KA5KKT
On 19:59, Jim Brown wrote:
> Crew,
>
> I've put up a pair of new antennas for 160M that are predicted to have
> about 3dB of gain over my existing vert
On Sat, 28 Aug 2010 06:18:06 -0400, Pete Smith wrote:
>Nonetheless, I wonder how this compares with others' experience,
>or with the factory expectation?
What I think you are observing is the AGC bringing up the system gain
so that you hear circuit noise in the front end. As W8JI has often
obs
On Sat, 28 Aug 2010 11:14:33 +0100, Ian White GM3SEK wrote:
>>Not many beams around my way in those days; I'm more interested in
>>keeping noise out of the receiver.
>>
>These days, that is often the most important reason to use feedline
>chokes.
YES! And keeping RF out of the shack, and out of
I am migrating to a new laptop with Win7. I have downloaded HRD
(Version 4.1) and everything seems to work like it did on my old
machine. I have also downloaded newest Prolific drivers. But the
waterfall seems to show loose/scattered signal with minimal/partial
de-code. I have tried to mess with se
Hello!
I am still looking for some options for my K3. KAT3 Tuner, KTCXO3-1 TCXO,
KXV3A RX Ant., IF Out and Xverter Interface (last Version), KFL3A-2.8K 2.8
kHz, 8-pole filter, KFL3A-400 400 Hz, narrow 8-pole filter, KFL3A-250
250 Hz, narrow 8-pole filter etc..
Thanks
73s Alex NH7VW,
Jim
Afraid I can't help with listening on 160, but an interesting topic, and
a measurement technique applicable to other situations. My observation
is that the mental averaging will be rather tricky, especially if the
QSB is slow and unpredictable. What we need is something (software?)
which will r
Ken:
The excessive power could also be due to a problem some of us have had where
the KPA100 gain is high enough that the ALC circuits do not have enough range
to control the power on some bands (typically 80m and/or 40m). Only SSB is
affected, not CW.
See:
http://mailman.qth.net/pipermail/e
I have a new, unbuilt KXB3080 option for sale to the first reasonable
offer. This includes pre-wound toroids from the ToroidGuy.
I managed to construct a real sweetheart of a KX1 (probably some
combination of my dumb luck + Elecraft's great manual) and I've decided
that I don't want to risk sc
> 3) Leave the tuner in manual mode and press TUNE on the tuner when you
> change bands or antennas. This interrupts the amp-key line before
> tuning starts. But this requires a TUNE REQUEST input to the K3
> which is not available.
Since the manual mode tune interrupts the amp-key line, yo
Pete,
The first thing I would do is get a calibrated signal generator (the
XG-2 is fine if you don't have something more complex) and perform
the RF gain calibration in the K3 Utility. Follow that with an S-
Meter calibration. After calibration with S9 = 50 uV (-73 dBm), I
see no S-meter activi
I received K3-100 #4639 on Thursday, August 26. It was ordered on Saturday,
August 21 and replaced an Orion II.
73,
Richard, N7NT
I received mine the same day as Richard, #4607.
Won't be on the air for another 3-4 weeks, as I still have to install some
stealth wires at my condo. I've been
Does the P3 Display 2m with the K144XV and other XVTRs?
Thanks,
Tom Childers
N5GE Antenna
4507 Branchview Drive
Arlington, TX 76017
n...@n5ge.com
http://www.n5ge.com
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Pete,
Don't tell me we are going to get into this "the K3 is noisy" discussion
again - it is one of those that comes around once in a while. The fact
is that the K3 has adequate gain to enable the user to hear its internal
noise floor - it can also hear everything above that noise floor. If
Pete Smith N4ZR wrote:
>
> Ever since I got my K3, I have been a little surprised at what seems to
> be a relatively high noise level with no antenna connected (or on a
> dummy load). Very unscientifically described, on 20m it registers 1-2
> bars on the S meter, and the background is quite
I have a full house QRP K2, plus two transverters. I was looking at
the Elecraft website the other day and noted that the KRC2 was intended
for the K2. Based on the title I thought I understood what it was
intended to do. Then looking at the description I decided I had no idea
what it wa
"...MFJ released a new Firmware for the MFJ-998 dated 08/02/2010. ..."
The MFJ-998 wasn't interrupting the amp-key line when it tuned from memory.
I guess it was assumed that this happend very quickly so this would not
cause a problem. However, as the relays operate you can have a momentary
hi
Joe Subich, W4TV wrote:
> Modern audio outputs are generally act like current sources.
Voltage (i.e. low impedance) not current.
> The total power output based on the ability of the amplifier
> to provide current at the supply voltage.
>
> The headphone amplifier in the K3 is an LM4811 specifie
Brian,
On your RF Probe, that 200 mV is noise pickup. Do you have a relatively
short ground wire (4 to 6 inches) with the alligator clip connected to
the board near the tip? That alligator clip should connect to one of
the ground loops you installed on the K2 boards. A short grounding wire
Ever since I got my K3, I have been a little surprised at what seems to
be a relatively high noise level with no antenna connected (or on a
dummy load). Very unscientifically described, on 20m it registers 1-2
bars on the S meter, and the background is quite loud on the speaker
with the audio
David Cutter wrote:
>I like measuring things in the lab and doing the calculations, so we
>can avoid blowing things up, wasted time and disappointment, but I also
>like to put the thing into practice and do relevant measurements in situ.
>
>I'm building yet another current meter (others have grow
I like measuring things in the lab and doing the calculations, so we can
avoid blowing things up, wasted time and disappointment, but I also like to
put the thing into practice and do relevant measurements in situ.
I'm building yet another current meter (others have grown legs and wondered
off
Jim Brown wrote:
>On Thu, 26 Aug 2010 08:08:16 +0100, Ian White GM3SEK wrote:
>
>>However, the AIM4170 is a higher-level instrument that is capable of
>>being re-calibrated to include the effects of an attached test fixture
>>(which then becomes "part of the instrument"). With care, it seems that
>
Ahhh, proper engineering.
My daughter, Lucy, and I constructed the kit in around 8 hours.
Everything fitted together beautifully.
It fired up and worked right off the bench - lovely.
Keep up the good work...
Simon 2E0SCF
--
Simon Faulkner 01538 303 900
Staffordshire Moorlands
___
Paul
As mike said keep it & use it, wouldn't be without mine.
Ken..G0ORH K2, K3, P3.
Sent from my iPhone
On 27 Aug 2010, at 22:30, "Mike Harris" wrote:
> G'day,
>
> The KAF2 is worth fitting if only for the low pass filter it
> introduces into the audio chain. Knocks out a lot of h
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