For a single band, there is an interesting old-time alternative called
a single wire Windom. It is a horizontal halfwave with a single wire
feedline connected to the horizontal wire off-center. For 20 the
dipole part is 34 feet. The single wire feed is soldered to the
horizontal at a point 12.5
For a lot of us (I have seen this discussed before) the 3 db points
are fairly useless as a real predictor of performance. The 6 and 60 db
points do a much better job, telling where the skirts start, and where
they are diving.
I will never forget my disappointment in the Collins 500 kHz CW
Most of the issues you address are seen in the sweep. The problem that
all the content and implications of the sweep can't be put in a 42 or
45 character item name in a catalog. Where there is a picture in a
catalog, the sweep curve would be more meaningful than a picture of
the filter itself.
If Elecraft thought they could guarantee that, there would be a new
version out there right now. Just remember it's *beta* software. As
always YMMV.
This is the alternative to releasing firmware changes only in new
model radios that cost kilobucks. Everyone gets to choose whether
they want to
Your amplifier should be close enough to a 50 ohm drive impedance that the
bypass mode in the K3 is easily usable when driving the amp. If you need an
ATU to drive the amp, it is a problem of some sort with the amp tube, its
input circuitry or connecting circuitry. I have seen a bad 3 foot piece
Freedom of speech works both ways.
It surely includes your right to bitch and moan however you please about
your K3 you spent your money on. But it also includes the right for someone
else to say you're just bitching and moaning, or wonder aloud in text if the
only reason you bought your K3 was
Hit display to show the menu items in the VFO B spot. Turn VFO B to display
nn.n V. That's what you're seeing inside. This works while you are
transmitting, so hold tune to transmit and you will see the voltage change
with your transmit draw.
On Fri, Oct 2, 2009 at 10:40 PM, Jim Miller KG0KP
I can find +/- 6.33 kHz on my K3 on 20m, but it's down in excess of 100 db.
That's listening with an antenna-less K2, the main signal showing 10 over 9,
and the spurs below standard MDS, just barely detectable as a tone by ear
in the RX noise with a narrow CW bandwidth.
Are you using the internal
Is the separate S-meter calibration irrelevant (eg smeter cal is really only
setting up front panel) once RF gain calibration is done in both RX, and
both RX RF gain curves are standard?
73, Guy.
On Wed, Oct 7, 2009 at 11:44 AM, Wayne Burdick n...@elecraft.com wrote:
You're right, Ken: The
The RF Gain procedure does not presume the XG1/2, but is written for any
50uv source available. If the procedure combines those two signal levels,
then equipment capable of supplying both 50uv and 1uv is necessary to run
the RF Gain calibration at all.
It works very well btw. S meter is now
Doesn't matter. 3.42 available. 73, Guy.
On Sat, Oct 10, 2009 at 10:05 PM, Jim Miller KG0KP jimmil...@stl-online.net
wrote:
Does anyone know if this is HRD version sensitive?
73, de Jim KG0KP
- Original Message -
From: Paul Fletcher p...@melreed.demon.co.uk
To:
What firmware revision number does latest refer to? Things are moving
fast. 73, Guy.
On Fri, Oct 16, 2009 at 11:00 AM, PA3CW pa...@planet.nl wrote:
I posted a question before about this issue, that i notice only after the
latest firmware update. When VOX is ON in CW and switch the K3 off
This gets to the point where someone wants new PRODUCTION code and features
every couple of months. Consider that the FT-1000MP had exactly one
release. The FT1000MP MkV had one release. Ad nauseum.
Since there is NO precedent of any ham transceiver folding in frequent new
major firmware
No, you're not the only one.
Some people use off-band split, so auto conformance of TX band to RX would
break that. Since a double press of AB brings B on band very quickly, it
does not appeal to me as a great step saver. The logging programs set the
split explicity by writing the
If you're up to 3.41, upgrade to 3.44. There was a fair amount of stuff
reported and fixed in last pre-beta string. Some of the stuff fixed results
in unpredictable weirdness.
On Sat, Oct 17, 2009 at 4:12 PM, David M. Elliott
immondi...@earthlink.netwrote:
Interesting effect. While working 20
I don't think the additions over the last year used the other 50%.
Actually with various continuing features on (NR, NB, CWT, etc), the current
code has been punching the top. While all you say (cleaning up, improving
process, etc) is true, the idea of a vast unlimited code execution space is
On Mon, Oct 19, 2009 at 4:38 PM, The Smiths notforc...@hotmail.com wrote:
Again, simply blinking the Delta F light (yellow LED) instead of having it
on solid, as obnoxious as it is, would be better than nothing when in split
mode.
I catch myself wondering if some posters have actually used
Reported and being addressed. 73, Guy.
On Thu, Oct 22, 2009 at 4:16 PM, tom_k1tl k...@cox.net wrote:
Hi Gang,
I just noticed whenever I turn the shift/width controls, I hear a clicking
in my heaphones as if a relay is being activated at every detent.
I have fw3.44 installed at present. Has
If your power supply is set to 12.0 volts, rather than the usual automotive
13.8 volts output, it would not take much loss in the DC hookup cabling and
connectors to get down toward 11 volts or below, and depending on the
setting for lo-volts, would exhibit the symptoms you mention, particularly
Waited for the .01 shift for CW. When it came out I changed to the .01
shift and have *never* changed it back.
.05 feels, sounds klunky on CW and does not allow me to play games with the
skirts when a strong station is up or down and bothering me. I use the
400 and 250 8 pole roofing filters
I have to confirm that.
It would not surprise me if the voltage on the front end of a radio device
went higher than a volt given conditions and antenna, particularly so in
Europe.
One time quite a while ago at W4BVV in northern Virginia, we measured 5
volts RF on an oscilloscope attached to the
'ends in 30' is not particularly descriptive, nor did you list your
firmware version. New Macro material in programmer's guide material is going
to require utility 1.2.10.27 and at least beta firmware 3.52 in place.
I wouldn't spend anytime on anything trouble-shooting unless you are at
1.2.10.27
The latest utility is 1.2.10.27 (new today). 3.44 is a now superceded
public beta version.
Get utility 1.2.10.27 and latest public beta firmware 3.52. See if you
still have the problem.
73, Guy.
On Wed, Oct 28, 2009 at 8:13 AM, Frank MacDonell kd8...@gmail.com wrote:
I just loaded up the
When the alpha 91 is in line, the K3 meter will report the SWR of the 91B
input circuitry. The apparent SWR of the 91b input can change with
different drive levels. You did not report what significant reflected
power was.
73, Guy.
On Tue, Nov 3, 2009 at 2:18 PM, Brian Machesney
This problem was reported about TRANSMITTED spurs, not spurs heard in K3
receiver. 73, Guy.
2009/11/9 Björn Mohr b...@broadcast.se
On 2 nov 2009, at 12.02, Bill W4ZV wrote:
Two Topband buddies have now reported a bad spur with relatively new
K3s
(April or May 2009) at only 20 dB down
CW reverse is USB listening, CW is LSB listening. Personally I put that
choice in the same bucket as Microsoft's backward slash but Rev=USB is
consistent on all bands on the K3 (reverses necessarily on the K2). I like
for the higher pitched audio to be the higher frequency on CW.
Assuming you
The OS probably reassigned the port number it was using for the USB driver.
The human has no control over what port number is used by the driver.
Any program you are running which is looking for the K3 on a serial port may
need to have the port number respecified after an OS change.
73, Guy
On
No standards. There is no international body in charge of the definition of
an S-unit.
Just history.
Somewhere I have a .jpg file from an ebay posting of a lovely pristine 30's
receiver with an S meter that showed S units on top side of scale, and dB's
on the bottom side. 6 db per unit.
The
In 3.59 -- Sync AM listening to music on HF BC, the sync search usually
kicks in and resettles at the bottom of a carrier fadeout, which will almost
always involve a near 180 degree phase shift at the bottom. The transition
is MUCH better than 3.58 for listening to music, the one or two cycle woop
beginning a firmware load.
This was fixed almost a year ago.
Dick, K6KR
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Guy Olinger K2AV
Sent: Thursday, November 19, 2009 8:41 AM
To: Wayne Burdick
Cc: Elecraft Reflector
Leaving the room is good :)
On Thu, Nov 19, 2009 at 8:24 PM, Steve Ellington n...@carolina.rr.com wrote:
During firmware uploads, I don't even touch the mouse! May be safer to just
leave the room.
Steve
N4LQ
n...@carolina.rr.com
- Original Message -
From: dalej dal...@mac.com
Try looping two or three turns through the snap-on, which will
increase the suppression a good deal. -73, Guy.
On Fri, Nov 20, 2009 at 2:38 PM, Clint clint.st...@sbcglobal.net wrote:
Hi All,
I have a problem with my Brand X USB to serial converter or cable that I have
not seen addressed
In talking about what kind of momentum Icom, Yaesu and Kenwood may
have lost to the K3, I risk becoming one of those religious
Elecrafters in the eyes of some. No such intent.
I would only report that the pro-Elecraft talk that some criticize
here is NOWHERE NEAR the harsh commentary used at
Check to make sure you haven't transmitted into the XG1 and blown the
safety diode. You can easily remove it to see.
On Mon, Nov 23, 2009 at 4:40 PM, Brian - N5BCN n5...@yahoo.com wrote:
Hello all,
When attempting to calibrate my K2's S-meter with a XG1, I discovered the
XG1 itself is having
The real rub for USB serial converters is poor drivers and poor
individual bios, taken together with an a Windows OS that historically
does poorly with critical slow-speed hardware timing.
I've watched K3 programs and the K3 be blamed over and over on this
reflector, but we are making Aptos
Static electricity is YOUR problem, not the K3's. If you are rubbing
your feet over a rug, spray it with static spray. Or ground yourself
on a little bit of static pad that you put there for the purpose. Do
something so you are not a lightning bolt every time you move.
You keep zapping it like
Noisy is what the uninitiated say whenever they don't yet know to back
off the RF gain just enough to take the riding band noise down to a
comfortable level. This was one of the lessons new Orion owners had to
learn as well, which could be set in the menu per band.
73, Guy.
On Tue, Dec 1, 2009
Already done.
Using roofing and DSP width that are closely matched, a clicky signal
that is down very steep skirts will be converted into pulses. The
roofing and DSP skirts need to **combine to be as steep as possible**.
Set the NB to off for IF, and use DSP settings 2-7 or 3-7. I've had
3-7
Not once in my experience has the K3 NB made clicks worse (that's N*B*
I'm talking about, not N*R*). I gave a formula in an earlier post in
this thread. I invite anyone to actually try it and see. NR does not
seem to do anything for or against clicks.
73, Guy.
On Tue, Dec 1, 2009 at 12:57 PM,
Are you recommending in a CW contest that one not engage in running if
one cannot find a space with an open kHz above and an open kHz below?
:)
Common contest practice in recent decades is 500 kHz between signals
regardless of folks without filters. And that seems to be squeezing
down to 400 and
I have utterly clear AM reception. And am so far unable to reproduce
your symptoms.
I'm not sure what firmware you are using but with last couple beta
versions it is possible to drive the DAC circuits into overrange
blast protection muting.
It is possible to accentuate the lows on AM to the
Part of the back and forth on this thread seems to be over the
definition of chirp.
The original definition of CW chirp, quite familiar in the 50's and
common, was a signal that went,
Dwp Dwoooip Dwp Dwoooip
Dwp Dwp Dwoooip Dwp
The
On the XG-x units, the LEVEL is intended to be fairly precise, the
actual frequency will vary in a minor fashion according to the actual
crystal. The XG's aren't intended to be a frequency standard.
73, Guy.
On Tue, Dec 8, 2009 at 1:20 PM, Kenneth Waites barbiek...@yahoo.com wrote:
Level 3.63
And the well-thought-out reason this is being discussed endlessly on a
reflector for Elecraft radios is ??.
The topic could be be taken to the cat care reflector,
or to the Idaho Potato reflector,
or to the interior design paint color reflector,
or to the reflector for radios unfairly
Take the latest one out there. Wayne advances the version for cause. 73, Guy.
On Fri, Dec 11, 2009 at 9:48 AM, Geoffrey Downs
geoff...@downs.globalnet.co.uk wrote:
Both 3.66 and 3.67 appear to be available as Beta downloads. I haven't yet
installed 3.66. Should I skip it and move on to 3.67?
From 100 to 150, for 1.7 dB, when Bell Laboratories research (with
huge capital investment and telephone maintenance dollars on the line)
determined that 3 dB was the signal strength change discernment for
most people?
It's amazing how these slim changes hold on with hams and spend their
money,
Let me get this right. You are looking for reassurance that money you
haven't spent will be well spent upping 100 to 150 watts. Perhaps
there is some part of you that doesn't believe it, or you would have
done it already? Maybe you should listen to the skeptic there.
Well, if you do go spend
In 1963's telephone school for newly employed wet-behind-the-ears ATT
testboardmen, we were taught 3 db as the discernible change, and the
reason why circuits that toned out more than a half db off had to be
patched out of service and adjusted spot on. The only way to get from
anywhere to
Bill, W4ZV wrote:
Guy, K2AV wrote:
If one wants to dig up the research...
http://www.audioholics.com/education/acoustics-principles/human-hearing-amplitude-sensitivity-part-1
Speaking now in terms of dB SPL, the minimum discernable changes by the
human ear/brain mechanism I've seen in the
On the other-other hand, even if 1 dB made the difference in only one
contact in a thousand, that might be very important to a world-class
contester. At that level of competition, a 0.1% increase in contacts
could be the difference between winning and losing.
What you suggest sounds good,
I'm sorry, but didn't you just prove that it took over 3 dB to make
the signal generally copyable from possibly copyable? Potentially
copiable at 27 uW (because one did), generally copyable at 80 uW, a
difference of 4.7 dB.
Makes me wonder if a couple of threads on the merits of dB aren't
being
Turning the sub RX on and off is cycling a whole lot of things. SO2x
operation in common practice uses something external to rig(s) to
switch/blend audio. Wayne has something on the list about improving
SO2x operation, but you can bet it's not a cheap fix. I think there
also was a reflector
CONFIG:SMTR PKSet it to ON and see if that does it for you.
73, Guy.
On Fri, Dec 18, 2009 at 12:06 PM, Edward Dickinson, III
softb...@windstream.net wrote:
Stickey SWR Meter for SSB operation.
73,
Dick - KA5KKT
__
Elecraft
Short version: put a way to reset to default AGC in the K3 itself. Do this ASAP.
Long version:
On Fri, Dec 18, 2009 at 10:11 AM, Wayne Burdick n...@elecraft.com wrote:
If you feel that the noise level of your K3's receiver is excessive,
please try the following:
snip
3. Use the
Sigh
Well, I must apologize, and take the flak for letting that neat piece
of information get past me. I still have to go find where that is laid
out and see what else I'm missing. I *did* go looking around for
something that told me what the defaults were before I wrote the post,
but
Bill, it's simpler than what you're looking for. You can put your
widest filter in FL1 and install them from there in descending
bandwidth. Use the K3 utility to set up the filters, much easier than
doing it with the config menu. The radio automatically switches in
the matching filter that
I have # 1239. This happened to me the first time I got in a contest
from home with the K3. I usually don't bother using headphones unless
there are other ops around. I got called down on the air by a European
station that was up 500 Hz on 20m at the height of the opening. I was
running 1500
K2 #1239 (my favorite portable toy)
K3 #1239
73 a great holiday, Guy.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This
Any chance we could see the list? Simply choosing those that are high
on our list might help to firm up the various items.
On Wed, Dec 23, 2009 at 1:02 PM, Wayne Burdick n...@elecraft.com wrote:
Hi all,
As you probably know, we keep a list of firmware features and
improvements to be added as
1. Fix it so spot pitch does not mute the RX. Makes it hard to
adjustin a busy contest. At a multi, different CW ops have different
tone centers. Folks at NY4A set it anywhere from 450 to 650. Comes
into play when handing off a run to another op for a bathroom break.
Hit CQ, hand the headsets
Good thing that reflector not the prime sales media. I would assign
that to word of mouth and Elecraft repeat customers. You got one
contester telling another that he hears things with his K3 that never
heard (or never heard well enough to copy) before, and it gets around
that a multi/op owner
If the AGC is being used, any difference would be seen in the S-meter,
not the AF output, unless you live in an extremely quiet location and
you're trying to copy 40m BC during the day.
My KBPF3 switches in at 7.385. If you turn the AF gains to minimum in
a quiet room, you will hear the relay
The DSP is behind the roofing filters. I set my 400 Hz filter to cut
in at 450 Hz width. If I set width to 500, the K3 uses the 1.8 kHz
roofing filter. The information diversity of the noise vs CW signal
as a ratio is much larger there and the algorithm seems to take
advantage of that. To my
This would be an option to have the TUNE hold function send
interrupted 40 wpm dots instead of a solid tone? I'd use it all the
time. Personally I don't normally need TUNE except to tune an amp
behind the K3.
All my amps are tubes. I'm waiting for a ham band 1500 watt CCS
transistor amp with a
Have a look at the mod. Other than trying to make Elecraft justify each
additional nickel, it's really whether you want to upgrade the DSP board or
not.
You do the stuff yourself, you're responsible for what happens, or doesn't.
Especially if you use a non-Elecraft mod. Replace/mod the board by
Wish there was a way to analyze and quantify MUCH less fatiguing.
There are aspects of hearing that are poorly understood. For instance there
is emerging cellphone research that indicates that listening to speech in
one ear is much more attention consuming than listening to the same
conversation
In N1MM on entry window, click config in menu bar. About half way down,
click on Dual RX always on.
On Tue, Jan 5, 2010 at 10:06 AM, bob finger fin...@goeaston.net wrote:
I'm a brand new K3 user. Had it since yesterday and already love it.
I want to use the radio in split with both receivers
The GOOD connectors are made by Switchcraft and Neutrik. In North
America, we can buy these parts from vendors like Newark, Allied,
Digikey, etc.
The solution is simple. Simply belly up to the bar and place an
order with one of these real electronics vendors for real
connectors and
There seems to be something floating around that if there's noise, it
must be the K3's fault. While EME frequencies have very little
ambient noise unless the antenna is aimed at the sun or some known
noise source, for MF and HF, there is plenty of ambient noise that
will come in on any antenna.
A six cylinder diesel doesn't have ignition noise. What noise are you
comparing against? 73, Guy.
On Wed, Jan 6, 2010 at 11:38 PM, rfenab...@gmail.com wrote:
To be honest I have not found any noise the NB would not get rid of.
Having said that, I have a 6 cylinder diesel that does give my
Ignition noise is very specific: cylinder fire timed very short
duration pulse noise with an extremely high peak to average signal
value without a signal frequency center, sometimes adversely affecting
frequencies continuously from below AM broadcast through UHF. Back in
the day I can remember
I think the noisy issue derives out of our quite old analog listening
habits and expectations.
I would estimate for easily half of the reflector population (my real
guess is 75%), that their listening to radio career began with an
analog HF radio that didn't have enough gain to present ambient
I agree. These artificacts have sidebands that increase and
decrease with content in the normal passband, but their separation and
frequency span is as if the frequency content (not the amplitude) of
the normal passband were divided by 2 or 4. They are way down, and do
not exceed the amplitude
How far down dB-wise is the 3rd harmonic?
On Sat, Jan 9, 2010 at 11:41 AM, Steve Ellington n...@carolina.rr.com wrote:
The installation of the Rev D DSP board went smoothly. I updated the
firmware and all is well.
The first thing I noticed was how much louder the headphones (Bose 32 ohm)
In the industry at large, refurbished boards tend to have a
significantly lower failure rate than new boards. The public's
reticence to using reworked electronics that aren't straight from
fabrication is based on an urban myth. Refurbished electronic items
are by and large a very good value.
Add PVRC to that list. Even some of our mumble-grump skeptics went to
K3's because they got their **s handed to them in a sling on the low
bands when the competition started using K3 true diversity.
On Sun, Jan 10, 2010 at 9:41 PM, ynkedra...@aol.com wrote:
If FRC, YCCC and FCG members, are
What niche?
Back in olden days, someone would use ain't bottom to refer to a patch of
land up aways from the river, a kind of pejorative. Until, that is, somebody
figured out how to grow corn on it. The parallel perjorative for Elecraft
and its customer base would have been tinkerers and kit
- Original Message -
From: VK2DX n...@clockmaker.com.au
...The bit that I enjoy the most is winding of toroids.
You must have had ill-understood dreams of something calling out to you
Kaye To, Kaye To.
Now you understand.
Anybody explain MoJo to you?
73, Guy
From: Joe Planisky jp...@jeffnet.org
I agree that finer steps to SHIFT would be nice, but until then,
wouldn't it be possible to center the audio using RIT?
So far as the audio passband one hears, the RIT is no different than the
main tuning knob. If one is mainly hearing 2150 to 2450 with a
I too had the serial port lockup, and had to reboot windows to release the
hold on it. The program explictly should leave the RTS/DTR alone. Once I
started a scan I was never able to stop it. Doc doesn't give any help about
how to set RF gain, and what the numbers mean. That would be really
I'm not sure what the din is, other than what is happening on the
frequency I am transmitting on. If you don't want to hear the frequency
between dits, why are you running QSK? Set the hang time to a character or
word space at your speed (easily done with most contesting programs or
hardware)
I have to vote with Brian for contest operation.
I have a couple threads going on this off the reflector.
One thing that may be causing some of the problem re hearing the MON on CW,
is that MON does not go up and down with the AF volumn control. I believe
some of the hearability issues may
K3 #1239 with FW 2.78 also keys the amp with VOX off. That is not a bad
thing for me. Being able to key that line without putting RF on the coax is
useful.
73, Guy.
- Original Message -
From: Merv Schweigert k...@flex.com
To: K2MK k...@comcast.net
Cc: keith.dar...@goodrich.com;
Gary,
First off engage the ATT and turn off PRE for receiving on your transmit
antenna on 160. (You may not notice you have these on if you are running
SMTR MD in the Config Menu.) If the offending station is really loud he may
be kicking the hardware AGC.
Make sure you actually are using
Oops, that's SMTR MD AbS below.
- Original Message -
From: Guy Olinger, K2AV olin...@bellsouth.net
To: wayne burdick n...@elecraft.com; g...@doctorgary.net
Cc: Elecraft@mailman.qth.net
Sent: Saturday, January 24, 2009 8:03 PM
Subject: Re: [Elecraft] Pumping with K3
Gary,
First off
I did all the A to B upgrades and other mods on my K2 #1239, including the
matched crystals, and then added the KDSP2. What a difference.
It is a 10W version and I keep a battery in it, so I added the KIO2 to talk
to the computer and the key line mod for amp keying for contesting use. I
can
One thing I have found is that 13.8 to the rear connector does not provide
13.8 to the battery, and it would NOT charge fully. Some of that is diode
drop and some is drop in the connectors. I now run that power supply at
14.4 for the K2, K3 and everything else. That puts about 13.9/14.0 on
How do I get the K3 to put the SUB RX S-meter *and* frequency readout on the
main RX. It's as if I hit BSET and then something else.
I know this can be done because I just stumbled into it and can't figure how
to get it back. This is really what I want when listening on sub RX and AUX
RF
Hi, Dave,
If what you are saying is that you want to hear a different band of tone in
each ear, say 400-550 in the left ear and 550-700 in the right, that is
easily done by setting the shift. Set the shift for the left as you want it
for main RX. Then hold BSET to get b SEt display, the
Having used three different K3's equipped with 4 different sets of 250 400 hz
8 poles in overload city major contests, the usefulness of these filters is
belied by the apparent closeness of numbers.
In practice we have found that associating the 400 with a DSP width of 450, and
the 250 with a
That's a wish for 10 Hz shift/width below, not 50 :)
- Original Message -
From: Guy Olinger, K2AV
To: ni0c ; elecraft@mailman.qth.net
Sent: Tuesday, August 04, 2009 10:14 PM
Subject: Re: [Elecraft] [K3] Elecraft roofing filters
Having used three different K3's equipped
What amplifier, what Elecraft transceiver, what keying levels from amp? What do
you mean by keying device?
73, Guy
- Original Message -
From: Phil LaMarche
To: elecraft@mailman.qth.net
Sent: Sunday, February 08, 2009 1:41 PM
Subject: [Elecraft] Keying an amp
Hooking up an amplifier
Phil, don't hook this up directly any more.
By my information the 30L1 has a minus (-)170 VDC key line. You are
actually keying 811A final tube grid cutoff bias, not a relay in the 30L1.
This line was meant to be hooked up to a relay in one of the Collins S-line
units.
The K3 only handles
The sentence does not fix whether the relay is in the amplifier or in the
K3. Perhaps:
...is transistor output for keying amplifier T-R circuits, ONLY positive
voltages up to +200VDC @ 5A.
Could a future mod include a blocking diode for negative keying voltages if
the circuit will not sink
Taking the DATA A readings below at face value, the more than 2 db bump
around 1000 Hz is rather startling. I'm not sure what could cause that, but
at least to me that seems to be screaming for an explanation. There's an
old fireman's adage never go past fire to keep from being trapped by fire
a
good idea.
73, Guy.
- Original Message -
From: Kok Chen c...@mac.com
To: elecraft list elecraft@mailman.qth.net
Sent: Sunday, February 15, 2009 12:31 PM
Subject: Re: [Elecraft] K3 Beta firmware rev. 2.82
On Feb 15, 2009, at 2/158:58 AM, Guy Olinger, K2AV wrote:
Taking
Did you have the RX ANT on? Would show an RX just to the right of ANT1/2 on the
display. That setting is saved by band.
73, Guy.
- Original Message -
From: Larry Springer
To: elecraft@mailman.qth.net
Sent: Thursday, February 19, 2009 11:15 PM
Subject: [Elecraft] K3 80 Meter Receive
I'm really having a really hard time identifying with any of the AGC NB
complaints.
I used the second-to-last alpha test firmware (not latest) installed to my
K3 in the recent ARRL DX CW on 40m from NY4A and was simply delighted. I can
nearly or effectively remove key clicks with certain
This is an MM logger setting:
Config tab on entry window: click on Dual RX always on.
- Original Message -
From: Jay Rodaman k2...@optonline.net
To: elecraft@mailman.qth.net
Sent: Saturday, February 28, 2009 9:02 PM
Subject: [Elecraft] K3 and N1MM (sub-rx)
I have turned on the sub-rx
What you experienced is not a bug. Do you turn off your PC by unplugging
it?
The K3 has a CPU in it, and in order to clean up and go to a power down
state, it needs to be RUNNING to stage itself down. Ever try unloading the
groceries the car while it's rolling away from you? Put yourself in
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