On 15/03/2020 12:10, Lyn Norstad wrote:
> I have also opted out of all my other group activities, and in fact most of
> them (ARES/RACES/Skywarn/etc.) have gone into "postpone" mode. In several
> other cases we are also looking at setting up virtual meetings and will
> conduct our business either
Just measured the power consumption of my KPA500:
Standby 10 W / 16 VA
Operate 12 W / 16 VA
73,
Richard G4DYA
On 27/10/2019 16:59, Don Wilhelm wrote:
> John,
>
> I do not think there is any harm in leaving it in operate. If you are
> really "pinching pennies" on the electric bill, you
On 27/09/2019 16:03, Bob McGraw K4TAX wrote:
[Tedious eulogy snipped]
QRP. It isn't big and it isn't clever.
73,
Richard G4DYA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
On 23/05/2019 11:55, G3YHM via Elecraft wrote:
> For some reason my K3 has decided to change the level of the Line out when I
> adjust the AF Gain control. Are my fingers in the menu to blame? How can I
> return it to normal?
Go to CONFIG:LIN OUT and if it says "=PHONES" then tap 1 to return
On 12/05/2019 23:22, Richard wrote:
> Is there any way to make the manual notch filter really narrow to keep morons
> running legal limit on FT8 from wiping out my waterfall and making my ears
> bleed?
>
> Don’t like what AGC does.
Probably not, but both the notch filter and AGC are the wrong
On 25/03/2019 00:14, Eric Swartz WA6HHQ - Elecraft wrote:
> Inquiring minds want to know:
> What would you all like to see as a “K4” ?
Something like the Flex / Anan SDRs, but with RX performance to match
the K3S. So maybe a 24-bit direct-sampling SDR, if such a thing is even
possible, with a
Hi all,
Has anyone had any success using the K3S noise blanker to get rid of the
new-ish FM-on-pulse types of over-the-horizon radar? I've tried various
settings but nothing seems to make any discernable difference.
There seem to be two main systems, both Russian:
'Sunflower', a surface-wave
Yes,
Heard ZL4AS yesterday using FT8 between 0815 and 0825.
Heard him again this morning between 0812 and 0836. Worked him at 0818,
just after he'd given another G station +17! Path length 19069 km.
He gave me +02, I gave him -12, but he was competing with a passing
train powered by an iced-up
On 29/11/2018 00:54, Jim Brown wrote:
> On 11/28/2018 3:28 PM, Mike Harris via Elecraft wrote:
>> I installed v2.0.0-rc4 which locks you into 77 bit messages and found
>> very little decode action on my waterfall so I reverted to v2.0.0-rc3.
>
> If you're not part of the solution, you're part
On 22/05/18 19:57, Jim Brown wrote:
> Yes. AND in the hands of a knowledgeable engineer/technician, a near
> lab-quality test instrument, with a display that can easily be
> calibrated to the signal level at the antenna input. I've used it to
> measure occupied bandwidth of transmitted signals to
On 19/05/18 03:18, Jim Brown wrote:
> On 5/18/2018 4:38 PM, Richard Lamont wrote:
>> On 19/05/18 00:15, k...@roadrunner.com wrote:
>>
>>> What features would your K4 have?
>> Compared to the K3S:
>>
>> RX maximum audio bandwidth increased from 4 kHz
On 19/05/18 00:15, k...@roadrunner.com wrote:
> What features would your K4 have?
Compared to the K3S:
RX maximum audio bandwidth increased from 4 kHz to 6 kHz.
More macro buttons.
Higher resolution S-meter (more bargraph segments).
1/4" jacks instead of 3.5mm ones.
Longer 13.8V power cable
On 15/02/18 11:12, Bill wrote:
> How well will the KPA1500 do on AM during very long-winded QSOs? I
> currently use my KPA500 on AM and it does fine - albeit a little noisy
> in the fan department. For information only: The K3 garners excellent
> audio reports on AM.
To prevent flat-topping at
The FT8 parameters were tweaked slightly during the beta phase prior to
the release of WSJT-X 1.8.0, and the TX time was reduced to 12.64 sec,
so the duty cycle is now about 42%.
73,
Richard G4DYA
On 15/02/18 01:22, Dennis Moore wrote:
> Specification is 13.48 sec TX, 16.52 sec RX, 45% Duty
On 16/01/18 23:52, Don Wilhelm wrote:
> Bottom line, the Elecraft amplifiers will do maximum power at a 50% duty
> cycle all day long. You should reduce the power for long winded AM
> transmissions, but otherwise you can run maximum power.
If you're running AM, 500W PEP is what you get with
On 18/11/17 05:43, Mark via Elecraft wrote:
> Re: http://www.navy.mil/submit/display.asp?story_id=92864
>
> So, "The rumors of my death have been greatly exaggerated"???
No, unfortunately for the CW evangelists, they haven't been.
The rumor that *is* being greatly exaggerated is that the US
On 18/11/17 03:45, Ron D'Eau Claire wrote:
> http://www.navy.mil/submit/display.asp?story_id=92864
The people being trained by the US Navy to read Morse are intercept
operators.
"Morse code is just one tool that cryptologic technician (collection)
Sailors use as members of the Navy's
On 13/11/17 23:10, Don Wilhelm wrote:
> The proper place to cure "RF in the shack" problems is in your antenna
> system. A good common mode choke (many call it a balun) in the antenna
> feedline and running the feedline at right angles to the radiator
> (assuming a dipole) to keep the feedline
On 13/11/17 20:18, Jim Brown wrote:
> On 11/13/2017 11:12 AM, Gary Smith wrote:
>> For those using WSJT-X, sometimes I find
>> the K3s is locked as transmit but there is
>> no RF being sent and no Rx from the K3.
>
> I've been using WSJT-X since it was first introduced several years ago,
> and
On 13/11/17 19:12, Gary Smith wrote:
> For those using WSJT-X, sometimes I find
> the K3s is locked as transmit but there is
> no RF being sent and no Rx from the K3.
>
> Anyone experience this and figure out how
> to prevent it?
I've seen this occasionally too. I've had a number of odd
On 29/10/17 23:19, Jim Brown wrote:
> The "gentlemen" most recently have gotten their tit in wringer about
> FT8.
When CW came along, the spark operators said is was the end of amateur
radio as we know it.
When AM came along, the CW operators said it was the end of amateur
radio as we know it.
On 31/07/17 20:19, Wes Stewart wrote:
> I noted that when my transmit interval occurred, there seemed to be
> about a one and a half second delay before the K3 began to transmit. I
> began an exchange of email with Bill, G4WJS, about this issue. I quote
> from one of his:
>
> "If you are
On 20/09/17 05:06, Jim Brown wrote:
> WSJT-X operates at 48 kHz 16-bit, no matter how exotic your
> sound card, the ~90 dB dynamic rangeand 5 kHz audio BW are more than
> sufficient for the audio I/O for the digital modes used in ham radio.
When operating JT65 or FT8 on HF, and having (as
On 19/09/17 22:05, Udo Langenohl - DK5YA wrote:
> I'm looking for specs of the internal sound device which is part of the
> KIO3B board but couldn't find any on the Elecraft web site.
> Anybody out there who's got detailed information?
>
> I'm just preparing all the stuff we gonna take with us
On 16/09/17 03:16, Edward R Cole wrote:
> But seriously no 3-KHz phone should be used since one QSO would occupy
> nearly 50% of the 7-KHz wide band.
We've had these bands in Europe for years and AFAIK nobody uses voice
modes. The IARU R1 bandplan suggests a maximum bandwidth of 500 Hz.
73,
On 03/09/17 20:38, Wes Stewart wrote:
> The K3S blanker is slightly better than
> useless. When I set it aggressive enough to be audibly useful, FT8
> decodes multiple signals at 120 Hz intervals, which upsets sequencing.
That's an inevitable consequence of how a noise blanker works.
It removes
On 02/09/17 15:52, Clay Autery wrote:
> Loose PS transformer?
The assembly manual for the kit suggests that, although it isn't
necessary, if you have a torque wrench you should tighten it to 55
inch-pounds.
73,
Richard G4DYA
__
On 31/08/17 22:56, Jim Brown wrote:
> On 8/31/2017 11:35 AM, Tox wrote:
>> I had a couple racks of APC
>> SmartUPS 2000 units with daisychained batteries to give extended
>> holdup to
>> a couple of racks of telecom and server hw. No clue how RF noisy those
>> units are, though.
>
> All of the
On 21/08/17 06:53, Bob Nielsen wrote:
> I'm a somewhat casual contester but am quite happy with the contest
> support in RUMLogNG. Tom keeps adding additional contests.
>
> I wish there was a Linux equivalent (or close) to N1MM or RUMLogNG. For
> non-contest stuff cqrlog isn't bad. Before I
On 19/08/17 13:12, Barry wrote:
> As Elecraft has grown, this email list has gotten quite a bit more traffic.
> It's not easy to manage, especially with the increasing number of products
> all lumped in.
>
> Why not convert it over to a forum? Use vBulletin or similar, and every
> product can
On 04/08/17 19:33, Brian Hunt wrote:
> Here's some followup:
> FLDIGI shows the "pumping" affect with carrier tones of 500, 1000, 1500,
> and 2000 Hz.
> WSJT-X 1.8 shows the "pumping" affect with carrier tones of 1000, 1500
> and 2000 Hz (couldn't select 500 Hz).
>
> The affect is very narrow
On 30/07/17 19:12, Wayne Burdick wrote:
> On 6 m, everyone uses grid squares when reporting their QTH. Is there a web
> tool or spreadsheet available somewhere that allows you to conveniently keep
> track of which ones you’ve worked?
I just used a paper map and a highlight marker. This worked
On 05/07/17 01:33, Jim Brown wrote:
> Richard -- I'm a Fellow of the Audio Engineering Society, BSEE, retired,
> worked in both audio and broadcasting. I'm VERY aware of distortion
> products and the mechanisms that produce them. I also TAUGHT this stuff.
> Your concerns are overblown.
Thank you
On 04/07/17 22:56, Jim Brown wrote:
> Richard,
>
> Not nonsense at all. WSJT-X is VERY robust in the ability to reject
> this sort of QRM. The screen grab below is a great example. I continue
> to be amazed by the decoding in WSJT-X. About 10 days ago, W0OGH
> accidentally got out of sync with
On 04/07/17 19:38, Bob McGraw K4TAX wrote:
> One anomaly which I've just observed with my K3S. I did set the
> software as suggested for SPLIT mode for WSJT-X / JT-65. The radio
> followed as expected. I made a few contacts successfully with this
> configuration. When I closed WSJT-X I
On 04/07/17 18:37, Jim Brown wrote:
> The split mode in WSJT-X is simply a crutch for those who don't know (or
> don't care) how to set audio levels so that distortion is not produced
> in the audio chain.
Sorry, but that's nonsense.
With a strong signal, just 1% distortion will produce audio
On 03/07/17 21:37, Elmore's wrote:
> Has anyone figured out how to control a K2 from RPi running WSJT-X (or
> FLDIGI,etc.)?
>
> Also, has anyone been able to run a digital program using a USB soundcard? I
> have a Star Tech 7.1 connected to my RPi. At the moment I am trying to get it
> to work
On 27/06/17 09:56, G4GNX wrote:
> Is anyone using a Kenwood MC-50 (dynamic) as a desk mic? If so, what settings
> are you using on the K3?
>
> I am finding that setting FPl or FPH and tapping ‘7’, then turning the mic
> gain way high, is the only way to get 5 bars on the ALC. I don’t think I
On 11/06/17 22:41, Erik Basilier wrote:
> I don't have any suggestions for a solution beyond what others have already
> mentioned, but as a side note I would like to discuss the concept of "off
> frequency".
>
> It seems to me that these days, on the HF bands that I frequent, more and
> more
I've been trying to calibrate the KPA500 wattmeter. I'm using a new Bird
43 meter with new 500A and 500H elements and a 1kW Bird Termaline load,
connected by the shortest practical lengths of co-ax.
Everything is fine, except on 50 MHz, where there isn't quite enough
adjustment range available.
On 27/05/17 21:37, Jim Brown wrote:
> I've been using JT modes for about six years. You should ONLY use
> WSJT-X, which is the software developed under the supervision of WSJT
> inventor (and Nobel laureate) K1JT. All other versions are derived from
> his earlier work, and most are unauthorized.
On 08/05/17 23:26, Jay Miller wrote:
> I was curious so I bought a GPS disciplined 10MHz source from China using
> the eBay seller "cybereveryday." I have a calibrated scope and a Rubidium
> 10MHz source. I noticed a frequency offset on three of the WWV frequencies
> when I plugged it into the K3
On 08/04/17 21:21, Joe Subich, W4TV wrote:
> You are looking for a solution that is unique to your own situation
> and would inconvenience hundreds of other users simply because you
> are too lazy to program a PF/Macro to toggle CONFIG:SPKR+PH when
> you use a headset.
Which part of the word
On 08/04/17 18:58, Mike Harris wrote:
> I'm losing track here. Am I correct in understanding:
>
> 1. SSB Sidetone required when wearing headphones.
>
> 2. SSB Sidetone not required when headphones are unplugged and listening
> to speaker.
>
> 3. SSB Sidetone automatically zeroed upon unplugging
On 08/04/17 18:11, Joe Subich, W4TV wrote:
>
>> On 4/8/2017 2:24 AM, Richard Lamont wrote:
>>> The firmware, however, does not appear to support what seems a simple
>>> and common-sense requirement.
>
> It is *not* the firmware - it is the *hardware* that
On 08/04/17 15:42, Rick WA6NHC wrote:
> I'll make two comments and no insult is intended or implied; its an
> opinion.
>
> Your 'need' to hear your own voice during transmit is not a common (to
> my experience) requirement. There is often a slight phase shift and
> it's distracting to most so
On 07/04/17 20:19, Phil, GJ4CBQ wrote:
> It might be worth your while re-reading Richard's posts.
>
> What he is asking for is the **automatic** toggling of the monitor
> function on insertion and removal of the headphone plug, without the use
> of a macro.
>
> The CONFIG:SPRK+PH setting does
On 07/04/17 06:59, Bob Wilson, N6TV wrote:
> On Thu, Apr 6, 2017 at 1:53 PM, Richard Lamont <rich...@lamont.me.uk
> <mailto:rich...@lamont.me.uk>> wrote:
>
> When I'm using a voice mode with a microphone, I need the TX monitor
> audio to appear in the head
ugh the speaker, just turn the monitor to zero
> and them turn it up when you wear headphones.
>
> I think that is the only way.
>
> 73
>
> Barry VK2BJ
>
> On 7 April 2017 at 06:53, Richard Lamont <rich...@lamont.me.uk
> <mailto:rich...@lamont.me.uk>> wro
My previous post might not have made it clear what I'm trying to achieve
with the K3S.
For RX audio, I usually listen on speakers. These mute when I plug the
headphones in. That's standard and obvious and just what I want.
When I'm using a voice mode with a microphone, I need the TX monitor
It would be useful when operating SSB to be able to hear my own voice in
the headphones, but not on the speaker, where it can cause feedback.
Is there any way of configuring the rig so that when using a voice mode
with a microphone, the TX monitor feeds the headphones but not the
speaker(s)?
73,
On 26/01/17 22:48, Bill Johnson wrote:
> I have 90' of Andrew Heliax with connectors, never mounted, brand new in
> boxes. I am selling as I do not plan on using.
Why are you posting this on the Elecraft list? It's nothing at all to do
with Elecraft. How are people supposed to filter their
On 10/01/17 00:48, Bill Frantz wrote:
> I have installed the KIO3BUPKT in my K3 and am generally quite satisfied
> with it. During the weekend RTTY contest, I noticed that I was getting
> very low audio volumes coming into my MacIntosh when the AGC was engaged
> (both in fast and slow modes). I
On 23/11/16 11:16, MaverickNH wrote:
> Looking at WSJT-X 1.7rc2 ALL_WSPR log and seeing RX frequencies such as
> 14.0971282. Seems like too many digits unless reporting 10th of a Hertz as
> in 14,097,128.2 Hz. Perhaps this is calculated as an average over the RX
> window?
>
> Looking at the log
ide with having roughly equal power
per unit bandwidth. So look at the waterfall on a convenient WebSDR and
see where the peaks and troughs in your signal are, then tweak
accordingly. There's little point in having anything below 300 Hz unless
you wish to be mistaken for Barry White.
--
Richard Lam
Hi,
FWIW I've done this. I've increased the gain by 12 dB, i.e. two bits.
Incidentally, the scaling on CONFIG:LIN OUT is linear - i.e. the output
voltage is proportional to the number. So for +12 dB w.r.t. the default
I've increased it from 10 to 40.
Richard Lamont G4DYA
On 06/11/16 16:48
ll be 60 dB
below the sum.
The data sheet shows the ADC has an SNR of 89 dB and THD+N of 0.01%
(i.e. -80 dB).
If the sum of the signals is peaking to -22 dBFS true peak, than that
weak JT65/JT9 signal is going to be at -82 dBFS - close to the ADC noise
floor. Maybe getting at least some of those
level
via this interface seems to be -22 dBFS true peak. Why is it throwing
away three bits of resolution? Or is this amount of headroom
necessary/useful?
TIA.
--
Richard Lamont G4DYA
<rich...@lamont.me.uk>
__
Elecraft mailing lis
On 13/10/16 20:40, Arie Kleingeld PA3A wrote:
> As far as mic-audio is concerned: how much hi-fi can you put through a
> 2.5kHz bandwidth SSB signal?
Not much. But there's more to microphone quality than frequency response.
1. Plosives. Will the mic handle poppy 'p' sounds without overloading?
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