After a brief warmup, the K4's short-term reference lock deviation is
approximately +/- 0.1 to 0.2 Hz at an operating frequency of 14 MHz. It scales
linearly with frequency. This is roughly 5x tighter than the equivalent spec
for the K3, so I'm guessing you wouldn't see it in a dopplergram. That
Can you say or know about when k4 will be available from " in stock" units?
73, Will, wj9b
CWops #1085
CWA Advisor levels II and III
http://cwops.org/
On Wednesday, January 27, 2021, 10:57:36 AM PST, Wayne Burdick
wrote:
> On Jan 27, 2021, at 10:04 AM, Wayne Suite wrote:
>
> Does th
Does the K4 do temp compensation like the K3 does, in very small steps?
If so, is the step size the same as the K3?
I used to do dopplergrams using my old 756 PRO III, but with the K3 the
frequency corrections are in steps and mess up the dopplergrams...
73, and thanks,
Dave (NK7Z)
https://ww
Ok, thanks.
On Wed, Jan 27, 2021 at 12:54 Wayne Burdick wrote:
>
> > On Jan 27, 2021, at 10:04 AM, Wayne Suite wrote:
> >
> > Does the K4 cover the 2200m and 630m ham bands, like the flex radios do?
>
> The K4 receives on these bands. Transmit output can be taken from the XVTR
> OUT jack, and i
> On Jan 27, 2021, at 10:04 AM, Wayne Suite wrote:
>
> Does the K4 cover the 2200m and 630m ham bands, like the flex radios do?
The K4 receives on these bands. Transmit output can be taken from the XVTR OUT
jack, and is about +10 dBm.
73,
Wayne
N6KR
Does the K4 cover the 2200m and 630m ham bands, like the flex radios do?
Also when are the group 3 orders shipping?
Thanks,
Kd5spx
--
Sent from my ipad
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I meant to say that 4K is the maximum resolution supported. Standard lower
resolutions are also supported.
Wayne
N6KR
elecraft.com
> On Jan 4, 2021, at 7:12 PM, Wayne Burdick wrote:
>
> On Jan 4, 2021, at 6:41 PM, Ken via Elecraft
> wrote:
>> Will the K4 Band Scope support line only
On Jan 4, 2021, at 6:41 PM, Ken via Elecraft wrote:
> Will the K4 Band Scope support line only (eg. no fill) wave forms, like the
> P3 ?
Yes. There are multiple selections for spectrum fill including OFF.
> What external monitor resolutions are supported by the K4 ?
4K (3840 x 2160)
>
>
Will the K4 Band Scope support line only (eg. no fill) wave forms, like the P3 ?
What external monitor resolutions are supported by the K4 ?
W8KEN - Ken
Sent from my iPhone
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Bob,
Thanks for taking the time to make this second recording and put up with us arm
chair quarterbacks who are critiquing the results. 😉
I can’t wait to make my own recordings (assuming Gov. Newsome allows CA
factories to open a bit more) and have critiques come my way. In the meant
My neighbor is 714ft (218m) away, running an ic7300 at 100w into a ZS6BW
antenna at 40ft--aimed in my general direction.
73 Eric WD6DBM
On Wed, Jun 24, 2020, 12:12 PM Greg Troxel wrote:
> Wayne Burdick writes:
>
> > I set mutual attenuation to 30 dB, a rough estimate of the path loss
> > using
During the BPL conflagration a number of years ago, most of the concern
seemed to be interference "to" amateur radio operations. I became a bit
concerned that my neighbor would go BPL and my 1200 HF watts would kill
his I'net. Technically and legally his problem, not mine of course, but
I sti
Wayne Burdick writes:
> I set mutual attenuation to 30 dB, a rough estimate of the path loss
> using dipoles 500' apart at 7 MHz. This is a pretty wild guess,
> though. Loss could be much higher if the antennas were oriented to
> avoid coupling, and it'll vary with frequency, terrain, actual
> di
> >>
> >> Of course the out-of-band rejection is even higher.
> >>
> >> A number of K4s will be used extensively during FD this year, including
> mine. I'll be taking advantage of the K4's low current drain (for its
> class) by running mine from a KX2 11
gt; > Of course the out-of-band rejection is even higher.
> >
> > A number of K4s will be used extensively during FD this year, including
> mine. I'll be taking advantage of the K4's low current drain (for its
> class) by running mine from a KX2 11 volt battery pack (3x 18
Well, that would certainly be enough for me. I have two loud
line-of-sight neighbors, but they don't hit +10 dBm.
Unfortunately they have "dirty" transceivers, so it doesn't matter. I
suppose I should buy them K4s.
73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/
Hi Jim
100 watts. Key to our success is the end-to-end alignment of our
3 element Yagis
73
Frank
W3LPL
- Original Message -
From: "Jim Brown"
To: elecraft@mailman.qth.net
Sent: Wednesday, June 24, 2020 12:49:00 AM
Subject: Re: [Elecraft] K4 Question
On 6/23/20
out-of-band rejection is even higher.
>>
>> A number of K4s will be used extensively during FD this year, including
>> mine. I'll be taking advantage of the K4's low current drain (for its class)
>> by running mine from a KX2 11 volt battery pack (3x 18650 cells)
nning mine from a KX2 11 volt battery pack (3x 18650 cells). For at least
> an hour or so :)
>
> 73,
> Wayne
> N6KR
>
>
>> From: "Eric Norris"
>> To: "elecraft@mailman qth. net"
>> Sent: Tuesday, June 23, 2020 9:32:04 PM
>> Su
Once any FT8 passband is digitized, filtered, and decimated in a K4, there
should be no need to ever apply AGC - just pass the bits over to WSJT. The
decimated bit stream may exceed 16 bits, so the WSJT input processor would have
to be modified to accept the additional dynamic range.
On Tuesd
On 24/6/20 11:02 am, Jim Brown wrote:
On 6/23/2020 4:53 PM, Adrian wrote:
An excessive strength FT8 signal is easy to remove with notch.
Yes, BUT -- the notch introduces phase shift, which can degrade
decoding. K1JT recommends running the IF wide and letting WSJT-X
separate signals.
Ok on
On 6/23/2020 4:53 PM, Adrian wrote:
An excessive strength FT8 signal is easy to remove with notch.
Yes, BUT -- the notch introduces phase shift, which can degrade
decoding. K1JT recommends running the IF wide and letting WSJT-X
separate signals.
I DO strongly differ with the advice in the
On 6/23/2020 3:27 PM, donov...@starpower.net wrote:
We use more than a dozen K3 transceivers at the W3AO Field Day with
as many as four operating in the same band (CW, SSB, FT8 and GOTA SSB),
but not this year...
What power level, Frank?
73, Jim K9YC
___
An excessive strength FT8 signal is easy to remove with notch.
On 24/6/20 7:32 am, Eric Norris wrote:
My foaming at the mouth over the K4 has been tempered by it having less
adjacent channel rejection than the K3 due to the different
architecture--at least until the K4HD comes out. I understan
an
hour or so :)
73,
Wayne
N6KR
> From: "Eric Norris"
> To: "elecraft@mailman qth. net"
> Sent: Tuesday, June 23, 2020 9:32:04 PM
> Subject: [Elecraft] K4 Question
>
> My foaming at the mouth over the K4 has been tempered by it having less
> adj
e the antennas being less than 250 feet
apart and no external filtering to minimize in-band interference.
73
Frank
W3LPL
- Original Message -
From: "Eric Norris"
To: "elecraft@mailman qth. net"
Sent: Tuesday, June 23, 2020 9:32:04 PM
Subject: [Elecraft]
My foaming at the mouth over the K4 has been tempered by it having less
adjacent channel rejection than the K3 due to the different
architecture--at least until the K4HD comes out. I understand this, and
the reasons why. Thanks for your answers
I know I have asked this question before, but I wan
One of the really great things about ham radio is that each
person can find their own place in the hobby. However, I did get
a good illustration of why so many people are using the digital
modes, particularly the FTx modes.
I operated in CW WW SSB over the weekend from New Hampshire. I
operat
This is what I love about Ham Radio with a wire and on CW..Great story! I'll
never will use any digital modes and the K3 is my last radio..at 76 and on a
fixed income like so many of us are..the K3 will be with me in the pine box
along with my Begali..No room for a PC..
73s Bob W5RG
O
I am surrounded by hams in my suburban neighborhood, one new ham two blocks
away who is S9+20db when he runs qrp. I pray he doesn't learn cw.
My question is, what model of K4 will supply the same blocking dynamic range
equal to or better than the K3S? The K4HD? I need RF protection! Every day
I certainly hope it does have a 70MHz capability, preferably, without taking
up a transverter slot.
Andrew G8BYB
-Original Message-
Erwin Witt - DK5EW Sent: 19 Sept 2019 22:29
>
>SRI I always send as html will give blank email.
>
>Will rock more than a few worlds ? OK I hope it will have
SRI I always send as html will give blank email.
Will rock more than a few worlds ? OK I hope it will have 4m as well .
Erwin/DK5EW
73's Erwin/DK5EW
Member of the Team of MMMonVHF
your premium VHF.DX resource in the internet can be found at:
http://www.MMMonVHF.de
Personal Homepage: http://ww
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If you add a dual transverter capability, could you make it full duplex for
satellite use? Even if it has to be a K4D, it would be worth it to me.
Logan, KE7AZ
Sent from my iPhone
> On Sep 19, 2019, at 12:17 PM, Wayne Burdick wrote:
>
> Joel,
>
> The K4 will receive on all LF and MF bands d
Joel,
The K4 will receive on all LF and MF bands down to 100 kHz. In TX mode, it can
put out a few dBm at the XVTR OUT jack for use with external low-band
transverters.
Since the K4 also has provisions for an *internal* transverter, we could in
theory offer one in for these bands. Power output
No you have not, there are many things that they are playing their cards
real close and we do not know about.
I am sure the K4 will rock more than a few worlds
Paul KB9AVO
On Thu, Sep 19, 2019 at 2:11 PM Joel Hallas wrote:
> I have been very impressed with the architecture and features of th
I have been very impressed with the architecture and features of the K4, as
announced. I was able to hear Eric describe the ideas behind it at the
Boxboro ARRL convention a few weeks back, and think it will be a fine
addition to the line.
The one feature I didn't hear about, and didn't think to as
If that turns out not to be supported, there are ethernet<->serial
adapters that are used to provide remote console ports on web servers.
I think Black Box, Raritan, and others make them.
Scott
AD6YT
On Wed, Aug 7, 2019 at 8:47 AM K5WA wrote:
>
> Wayne (or anyone),
>
>
>
> I have a rather specif
Bob, K5WA wrote:
> I have a rather specific question. When I operate locally with a K4, I need
> an RS-232 connection to the local computer/accessories but when I'm remote,
> I will only need the K4's ethernet connection. Can the K4 have BOTH enabled
> simultaneously?
Yes. The K4 can be contr
"In the K3S, it is one or the other (USB or RS-232)."
That limitation is surprising to me. My Kenwood TS-590S allows simultaneous
use of USB CAT and COM CAT. My current station architecture would have been
much more difficult to implement without that capability.
73,
Andy, k3wyc
_
Wayne (or anyone),
I have a rather specific question. When I operate locally with a K4, I need
an RS-232 connection to the local computer/accessories but when I'm remote,
I will only need the K4's ethernet connection. Can the K4 have BOTH enabled
simultaneously? In the K3S, it is one or the
Erik and gang, will you have software that can run on a pc to control SDR
etc like SDRPlay Flex, etc? Lots if questions, but i can wait.
Exciting news. Now, i wonder hiw much i can get for the Kansas Farm?
Lee K0WA
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