Re: [Elecraft] KX3 running FT8 and WSPR

[Nr4c]

Time!

Your computer must be set to the correct time to the second.   

are you getting the correct indication of correct levels (ALC: 4 bars solid 
with 5th bar flickering). 

Have you done the temp stabilizing calibration?

So, to sum up... correct time, correct levels, correct frequency



Sent from my iPhone
...nr4c. bill


> On Apr 20, 2020, at 10:46 PM, Eddy - k6sdw  wrote:
> 
> Hello reflector wizards, I have my KX3 running WSPR reliability but I'm
> having little success making contacts on FT8. My basic question, if WSPR is
> working and reporting my callsign reliability then FT8 should work with the
> same settings? Any recommendations for audio settings, I'm using Data A
> mode, 5 watts into an endfed dipole about 20' in the air.not great
> antenna, but the best I can do in my current living situation.
> 
> Many thanks and 73
> 
> Ed ~ k6sdw
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Re: [Elecraft] KX3 running FT8 and WSPR

[huntinhmb]

Have you checked PSK reporter ( [ https://www.pskreporter.info/ ]( 
https://www.pskreporter.info/ ) )?  You can set up search parameters at the top 
of the map page to show stations that have heard you by band, mode and time.  
It will give you an idea of where you are being heard and how well you are 
getting out.  Each reporter should show your signal strength at his location.  
GL
 
73,
Brian, K0DTJ
 
-Original Message-
From: "Eddy - k6sdw" 
Sent: Monday, April 20, 2020 19:43
To: elecraft@mailman.qth.net
Subject: [Elecraft] KX3 running FT8 and WSPR



Hello reflector wizards, I have my KX3 running WSPR reliability but I'm
having little success making contacts on FT8. My basic question, if WSPR is
working and reporting my callsign reliability then FT8 should work with the
same settings? Any recommendations for audio settings, I'm using Data A
mode, 5 watts into an endfed dipole about 20' in the air.not great
antenna, but the best I can do in my current living situation.

Many thanks and 73

Ed ~ k6sdw
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Re: [Elecraft] KX3 running FT8 and WSPR

[Don Wilhelm]

Ed,

Are you driving the audio properly for the K3?  You should set the audio 
to give you 4 bars on the ALC meter with the 5th bar flashing.  That is 
the NO ALC point for the K3.


Adjust the power with the K3 Power knob and not the audio level.

73,
Don W3FPR

On 4/20/2020 10:43 PM, Eddy - k6sdw wrote:

Hello reflector wizards, I have my KX3 running WSPR reliability but I'm
having little success making contacts on FT8. My basic question, if WSPR is
working and reporting my callsign reliability then FT8 should work with the
same settings? Any recommendations for audio settings, I'm using Data A
mode, 5 watts into an endfed dipole about 20' in the air.not great
antenna, but the best I can do in my current living situation.


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[Elecraft] KX3 running FT8 and WSPR

[Eddy - k6sdw]

Hello reflector wizards, I have my KX3 running WSPR reliability but I'm
having little success making contacts on FT8. My basic question, if WSPR is
working and reporting my callsign reliability then FT8 should work with the
same settings? Any recommendations for audio settings, I'm using Data A
mode, 5 watts into an endfed dipole about 20' in the air.not great
antenna, but the best I can do in my current living situation.

Many thanks and 73

Ed ~ k6sdw
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Re: [Elecraft] Elecraft K3s, etc. bonding

[Jim Brown]

On 4/20/2020 6:08 PM, Tom Norris NB5Q wrote:

I'm asking what method and
attachment point, to each piece of equipment, you experienced K-Line owners
use to bond the K3s, P3, SP3, etc. and then on to the station ground.


I use wires soldered to screw lugs, making sure that the attachment 
point is not insulated from the chassis by paint. Some of the equipment 
has a dedicated grounding screw. Shells of DB connectors SHOULD be 
bonded to the equipment chassis, but not always -- some mfrs screw up 
and fail to do that.


Some of my equipment goes out in the field from time to time, so I use 
single circuit Power Pole connectors to make that easy. I'll use 2-6" 
between the lug and the PowerPole, then make a loop soldered to a 
PowerPoles that connect to each piece of gear in the string (so each 
connector has two wires). There are lots of suitable variations on this, 
depending on how the shack is laid out.


These are the slides for my talks on station power, grounding, and 
bonding. http://k9yc.com/GroundingAndAudio.pdf


73, Jim K9YC
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[Elecraft] Elecraft K3s, etc. bonding

[Tom Norris NB5Q]

I don't want to re-invent the wheel so I'm asking what method and
attachment point, to each piece of equipment, you experienced K-Line owners
use to bond the K3s, P3, SP3, etc. and then on to the station ground. I
have
Thank you, Tom NB5Q
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[Elecraft] FS K2

[T Jones]

I have a K2 for sale ser# 4491 original owner
KAF2 audio filter 
KAT2 20 watt internal ATU
KIO2 RS-232 and cable

Asking $525 pics available 
K9NX
Jonesy

Please reply off list 


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Re: [Elecraft] Some K4 updates from the engineering department

[W0FK]

Sounds great Wayne, it appears you and the engineers are staying productive
and moving the ball forward. Very exciting information.

It's occurred to me that you don't have enough testers for the K4. In the
spirit of pitching in during these tough times, I'll offer myself as a K4
tester and help out in your efforts to beat back Covid-19 for the ham
community. It's the least I can do.

73

Lou, W0FK  



-
St. Louis, MO

"The difference between stupidity and genius is that 
genius has its limits." Albert Einstein


--
Sent from: http://elecraft.365791.n2.nabble.com/
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[Elecraft] K4

[Frederick Dwight]

Ralph,  it is very easy to see if the mixing is happening in a RX or spectrum 
analyzer is to just dial in some attenuation.  If the problem is within the
device and you put in 10 dB of attenuation you will typically see a much 
greater decrease in the inter mod, probably 20 dB or much more.  If the
mixing happens outside the RX, a 10 dB attenuation should result in a 10 dB 
reduction of the inter mod.  On the lower HF bands, with reasonable
antennas, preamps are not usually required or even recommended.  Sometimes even 
folks use some attenuation on say 160 meters.  There are
many possibilities for external mixing, not just the ones you mentioned.  For 
example in other devices in house, such as a transmitter, TV preamp, 
SWR meter on another antenna, etc.  Just one example I recently encountered, My 
160 meter preamp I used on my RX array mixed two
AM radio stations.  It had back to back “protective” diodes. After I abandoned 
this published design, I built a very robust preamp, no protective
diodes were necessary, and I was able to use the array from below 500 KHz to 
well over 7 MHz without a BPF or HPF.  I would guess that the
mixing is occurring in your immediate neighborhood, not many hundreds of yards 
away.  I would walk around the area with a portable SW
RX, even a less than $100 one or even a thrift store battery powered one will 
probably be plenty sensitive, at least mine picks up SW stations
many thousands of miles away with it’s 3 foot whip antenna.Rick  
KL7CW  no problems with my K3S.

Sent from Mail for Windows 10

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Re: [Elecraft] Power supply for KS

[Wes]

Sadly, that is not always true.  There is a remarkable dependence upon frequency 
as well.  The sweet spot on my K3S is at 7 MHz.  The IMD is actually lower at 
100W than at lower power.  That said it goes to pot at 1.8 and 25 MHz but is 
lower again at 28 MHz.


Wes  N7WS


On 4/20/2020 1:55 PM, Jim Brown wrote:

[snip]

Note also that IMD in Elecraft output stages is greatest at maximum power out, 
and falls by a lot at 1/4 to 1/2 power.


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[Elecraft] Power supply for KS

[Richard Donner]

Thanks for all the responses.
Bother way the heading should have K4
Typo on my part
73
Richard
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Re: [Elecraft] Power supply for KS

[Bob McGraw K4TAX]

Just adjust the voltage to 14.5 to 14.8 no load, usually via an internal 
adjustment, and be done with it.


73

Bob, K4TAX



On 4/20/2020 2:59 PM, Richard Donner wrote:

Hi Ken
Thanks for the info.
I am  not in a rush yet.   I noticed that the voltage is 13.4.. Maybe a
little higher might be better.  Not sure on the last point.
I will check what else they make
TU   73
Richard


On Mon, Apr 20, 2020 at 12:51 PM Ken Winterling  wrote:


Richard,

I use an IOTA DLS-55 SMPS power supply (
https://www.iotaengineering.com/dls55.htm).  It provides 55 amps, doesn’t
produce RFI, is audibly quiet, and rugged.  The dimensions are 9.7" x 6.7"
x 3.4" and the weight is 5.0 lbs.  Mine is on 24/7/365.  IOTA also makes
them in other output voltages and currents.

Ken
WA2LBI


On Mon, Apr 20, 2020 at 15:21 Richard Donner 
wrote:


I need  to get a new power supply for my upcoming K4 and accessories
before
my present 40 year old supply goes belly up.
I want reliability and no fussing , fixing or modifying  things. Any
recommendations.
I heard that some of the old brands are not what they used to be.
Thanks,
Richard   wa6kyr


--

Ken
WA2LBI

Sent from one of my mobile devices


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Re: [Elecraft] Power supply for KS

[Bob McGraw K4TAX]

I'm using the Astron SS-30M for my station.  Actually I have 2 of them 
on the desk, one for the K3S and accessories and the other one for 
another brand of radio and accessories.  I have found they are reliable, 
quiet and no RFI issue between 160M and 1296 MHz, including 144 MHz, 432 
MHz.


73

Bob, K4TAX


On 4/20/2020 2:20 PM, Richard Donner wrote:

I need  to get a new power supply for my upcoming K4 and accessories before
my present 40 year old supply goes belly up.
I want reliability and no fussing , fixing or modifying  things. Any
recommendations.
I heard that some of the old brands are not what they used to be.
Thanks,
Richard   wa6kyr
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Re: [Elecraft] Power supply for KS

[Edward R Cole]

Maybe find an old one that still working??

My Astron 50A analog PS has been run 24/7 for 16 years (or so) and 
was in commercial use before (years?).  Previous to it  I bought an 
Astron V35M (new in 1980) which lasted many years until blowing 
(open) one of the rectifier diodes.  It sits on my workbench.


But there are some good switching supplies (properly RF filtered).  I 
only have three which is are HP 50v-50A supply* for my kilowatt 
amps.  A  toroid works well for RFI filter.  *Likely surplus 48v 
telephone equipment.


73, Ed - KL7UW
  http://www.kl7uw.com
Dubus-NA Business mail:
  dubus...@gmail.com 


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[Elecraft] Power supply for K4

[Steve Hall]

I still like the Astron linear supplies.  They go forever and make no RF
noise but I am Old School.
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Re: [Elecraft] Power supply for KS

[Jim Brown]

On 4/20/2020 1:05 PM, Rick Bates, NK7I wrote:
Wayne has said that 14.2V is desirable (as read on the display, so 
~14.4V at the source AND the input connector at the radio).  This 
provides a more clean signal.


That flies in the face of Ohm's law, which describes the IR voltage drop 
in the cable between the power supply terminals and the radio terminals. 
To get 14.2V at the radio, you'll need more than 14.2V at the power 
supply, and you'll need short, fat copper between them. Also, it's well 
known that most commercially available power distribution systems add 
both resistance and contact resistance to the path, so it's best to run 
a dedicated feed to the radio.


Yes, Elecraft radios have less IMD with increased power supply voltage, 
up to their maximum rated voltage.


The two K3s in my shack run from a 100Ah Bioenne Power LiFePO4 battery. 
It's much closer to one radio than the other; the power to the closer 
one is about 3 ft of #8; to the longer one, it's two runs in parallel, 
about 6 ft. I typically get about 13.4V at the radios, as indicated on 
their internal voltmeter during transmit.


Note also that IMD in Elecraft output stages is greatest at maximum 
power out, and falls by a lot at 1/4 to 1/2 power. I mostly run my K3s 
with a power amp; one feeds a KPA1500, which requires 30-40W drive for 
full output, the other an 87A, which needs 40-55W. When I want to run 
100W for contesting, I throttle the power back to a few watts and use 
the amps. The same issue is present with the 15W stage -- IMD is 
greatest just before the 100W power amp kicks in, around 15W.


73, Jim K9YC


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[Elecraft] 40 meter net 4-19-2020

[Steve Hall]

Thanks to all.  Sorry if my notes missed anyone or any other errors.
WM6P Steve   GAK3s   Net Control
K8NU  Carl  OHK3s
WB9JNZ Eric   IL  K3
N3KCB   Tony  DE
NC0JW   Jim   COKX3
KB9AVO Paul  IN K3s
KA4KXX Walter   FLhomebrew  25 Watts
AB9PR   DerickIL K3
AA5DK   Jerry  FLTS-440
AE1E KenNM   K3s
WA0UPBRex   KSIC730
W1JWC Jerry  MAFlex6400
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Re: [Elecraft] KAT4

[Doug Turnbull]

Bob is right, I have even loaded a standard G5RV on 160M to make my first top 
band QSOs with the K3 at around 100W.I was not working the antenna against 
ground. It is an amazing tuner, well done Elecraft.
   73 Doug EI2CN

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Bob McGraw K4TAX
Sent: Monday 20 April 2020 20:38
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KAT4

Per the manual, the KAT3A internal tuner for the K3S will match a SWR range of 
10:1 with a 100 watt power rating.  {page 79}  And it will match a 20:1 SWR 
range with a 10 watt power rating.   I've never encountered any of my crazy 
antennas that it wouldn't match.

73

Bob, K4TAX

On 4/20/2020 8:35 AM, Charlie T wrote:
> Well this MAY be a valid question, since I believe for example, the IC-7300 
> and/or  IC-7610 have an "emergency" mode where the power is cut back to 50 
> watts and the allowable tuner's SWR range is extended from its normal full 
> power mismatch capability.
> If I remember correctly, its only 3:1 at 100 W, but will match an "emergency" 
> use antenna if you have to.
>
> 10: 1 capability DOES put some hefty restraints on an internal tuner.
>
> 73, Charlie k3ICH
>
>
>
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net  On 
> Behalf Of David Bunte
> Sent: Monday, April 20, 2020 9:03 AM
> To: Charles Sells 
> Cc: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] KAT4
>
> Charles -
>
> I don't "know" what the power handling capabilities are, but think I can 
> safely assume that if it is in the K4 it can handle the power of the K4. I 
> trust that Wayne, Eric, or someone else who "knows" the answer will chime in 
> when they are able.
>
> 73 de Dave - K9FN
>
> On Mon, Apr 20, 2020 at 8:25 AM Charles Sells 
> wrote:
>
>> I can see from the literature that is on the website that the KAT4 ATU
>> will handle a 10:1 matching range but don’t see what the power
>> handling capabilities are.
>>
>> Anyone know?
>>
>> 73
>> Charles
>> W4PPP
>>
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Re: [Elecraft] K2 Year

[Aaron K5ATG]

Thanks for the info Don.

On Mon, Apr 20, 2020 at 2:47 PM Don Wilhelm  wrote:

> When do you mean?  There was no text in your post.  Did you send in
> HTML?  If so, mailman would have stripped it out - you must use plain text.
>
> The K2 was initially designed and released to Field Testing in 1998.
> There have been several design improvements since then, and at the time
> of SN3000, the boards were re-done to incorporated all the upgrades on
> the board.  The only change since SN3000 is the keying waveform upgrade
> which is installed as part of the kit starting with SN 4660 if I recall.
>   The kits are still being shipped and the serial numbers are
> approaching 8000.
>
> I don't recall the years each of the upgrades were released.
> Any early K2 can be upgraded to the current level with the kits and
> instructions from Elecraft.
>
> 73,
> Don W3FPR
>
> On 4/20/2020 1:18 PM, Aaron wrote:
> >
>


-- 
'72
Aaron Scott
K5ATG 
Mid-Del Amateur Radio Club 
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Re: [Elecraft] Power supply for KS

[Richard Thorne]

I have a couple DuraComm LP-25's.  I've never had a single issue with 
them.  I adjusted a pot and took the voltage up to 14.5 volts.


The LP-25's are switching power supplies.  I have not detected any 
receiver noise, so they're clean in my setup.  They have a cooling fan 
which only comes on when there is a heavy load.  It gets a bit loud at 
times.  In my case, I'm normally driving an amp, so the power supply 
doesn't see much of a load with 25 watts output on the K3S.


Rich - N5ZC

On 4/20/2020 2:20 PM, Richard Donner wrote:

I need  to get a new power supply for my upcoming K4 and accessories before
my present 40 year old supply goes belly up.
I want reliability and no fussing , fixing or modifying  things. Any
recommendations.
I heard that some of the old brands are not what they used to be.
Thanks,
Richard   wa6kyr
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Re: [Elecraft] KAT4

[Bob McGraw K4TAX]

Per the manual, the KAT3A internal tuner for the K3S will match a SWR 
range of 10:1 with a 100 watt power rating.  {page 79}  And it will 
match a 20:1 SWR range with a 10 watt power rating.   I've never 
encountered any of my crazy antennas that it wouldn't match.


73

Bob, K4TAX

On 4/20/2020 8:35 AM, Charlie T wrote:

Well this MAY be a valid question, since I believe for example, the IC-7300 and/or  
IC-7610 have an "emergency" mode where the power is cut back to 50 watts and 
the allowable tuner's SWR range is extended from its normal full power mismatch 
capability.
If I remember correctly, its only 3:1 at 100 W, but will match an "emergency" 
use antenna if you have to.

10: 1 capability DOES put some hefty restraints on an internal tuner.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of David Bunte
Sent: Monday, April 20, 2020 9:03 AM
To: Charles Sells 
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KAT4

Charles -

I don't "know" what the power handling capabilities are, but think I can safely assume 
that if it is in the K4 it can handle the power of the K4. I trust that Wayne, Eric, or someone 
else who "knows" the answer will chime in when they are able.

73 de Dave - K9FN

On Mon, Apr 20, 2020 at 8:25 AM Charles Sells 
wrote:


I can see from the literature that is on the website that the KAT4 ATU
will handle a 10:1 matching range but don’t see what the power
handling capabilities are.

Anyone know?

73
Charles
W4PPP

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Re: [Elecraft] Power supply for KS

[Wes]

I second IOTA.

I've used them in my RV, replacing another brand to get rid of the RFI.  Mission 
accomplished.


Disclaimer:  IOTA is located in Tucson, and a long time ago in another life I 
moonlighted for the founders in another startup company.


Wes  N7WS


On 4/20/2020 12:51 PM, Ken Winterling wrote:

Richard,

I use an IOTA DLS-55 SMPS power supply (
https://www.iotaengineering.com/dls55.htm).  It provides 55 amps, doesn’t
produce RFI, is audibly quiet, and rugged.  The dimensions are 9.7" x 6.7"
x 3.4" and the weight is 5.0 lbs.  Mine is on 24/7/365.  IOTA also makes
them in other output voltages and currents.

Ken
WA2LBI



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Re: [Elecraft] Power supply for KS

[Rick Bates, NK7I]

Simply verify that the panel voltage is the same was what a known meter 
reads at the output, adjust the front panel meter as required.  (Most 
panel displays are off or simply not as accurate.)  Then one can use a 
permanent marker to place a line on the meter display, off the tip of 
the needle to quickly see any variance (in time, you'll squint less).


Rick NK7I


On 4/20/2020 1:10 PM, John Simmons wrote:
The same supply is sold under the DURACOMM name. I believe there is a 
pot accessible through a hole in the case to adjust the voltage.


My $0.02: I prefer supplies that are in a desktop case with meters for 
current and voltage. The meters give me peace of mind and add 
information and ambience to the ham shack. The Astron SS series seems 
to be good.


-de John NI0K

Richard Donner wrote on 4/20/2020 2:59 PM:

Hi Ken
Thanks for the info.
I am  not in a rush yet.   I noticed that the voltage is 13.4.. Maybe a
little higher might be better.  Not sure on the last point.
I will check what else they make
TU   73
Richard


On Mon, Apr 20, 2020 at 12:51 PM Ken Winterling  
wrote:



Richard,

I use an IOTA DLS-55 SMPS power supply (
https://www.iotaengineering.com/dls55.htm).  It provides 55 amps, 
doesn’t
produce RFI, is audibly quiet, and rugged.  The dimensions are 9.7" 
x 6.7"
x 3.4" and the weight is 5.0 lbs.  Mine is on 24/7/365.  IOTA also 
makes

them in other output voltages and currents.

Ken
WA2LBI


On Mon, Apr 20, 2020 at 15:21 Richard Donner 
wrote:


I need  to get a new power supply for my upcoming K4 and accessories
before
my present 40 year old supply goes belly up.
I want reliability and no fussing , fixing or modifying things. Any
recommendations.
I heard that some of the old brands are not what they used to be.
Thanks,
Richard   wa6kyr


--

Ken
WA2LBI

Sent from one of my mobile devices


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Re: [Elecraft] Power supply for KS

[Ken Winterling]

If you insert a jumper in the jack on the side it raises the voltage to
14.2.

Ken
WA2LBI





On Mon, Apr 20, 2020 at 3:59 PM Richard Donner 
wrote:

> Hi Ken
> Thanks for the info.
> I am  not in a rush yet.   I noticed that the voltage is 13.4.. Maybe a
> little higher might be better.  Not sure on the last point.
> I will check what else they make
> TU   73
> Richard
>
>
> On Mon, Apr 20, 2020 at 12:51 PM Ken Winterling  wrote:
>
>> Richard,
>>
>> I use an IOTA DLS-55 SMPS power supply (
>> https://www.iotaengineering.com/dls55.htm).  It provides 55 amps,
>> doesn’t produce RFI, is audibly quiet, and rugged.  The dimensions are 9.7"
>> x 6.7" x 3.4" and the weight is 5.0 lbs.  Mine is on 24/7/365.  IOTA also
>> makes them in other output voltages and currents.
>>
>> Ken
>> WA2LBI
>>
>>
>> On Mon, Apr 20, 2020 at 15:21 Richard Donner 
>> wrote:
>>
>>> I need  to get a new power supply for my upcoming K4 and accessories
>>> before
>>> my present 40 year old supply goes belly up.
>>> I want reliability and no fussing , fixing or modifying  things. Any
>>> recommendations.
>>> I heard that some of the old brands are not what they used to be.
>>> Thanks,
>>> Richard   wa6kyr
>>>
>> --
>>
>> Ken
>> WA2LBI
>>
>> Sent from one of my mobile devices
>>
>
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Re: [Elecraft] What's the best method to send high speed CW?

[Lou Voerman W2ROW]

I am not a high CW op by any stretch but I think the K1EL Winkeyer (USB)
interface is used a lot. It is supported by most ham radio software (like
HRD). It relieves the computer from doing the CW timing which can be
unreliable depending on load.

Lou   W2ROW





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Re: [Elecraft] Power supply for KS

[John Simmons]

The same supply is sold under the DURACOMM name. I believe there is a 
pot accessible through a hole in the case to adjust the voltage.


My $0.02: I prefer supplies that are in a desktop case with meters for 
current and voltage. The meters give me peace of mind and add 
information and ambience to the ham shack. The Astron SS series seems to 
be good.


-de John NI0K

Richard Donner wrote on 4/20/2020 2:59 PM:

Hi Ken
Thanks for the info.
I am  not in a rush yet.   I noticed that the voltage is 13.4.. Maybe a
little higher might be better.  Not sure on the last point.
I will check what else they make
TU   73
Richard


On Mon, Apr 20, 2020 at 12:51 PM Ken Winterling  wrote:


Richard,

I use an IOTA DLS-55 SMPS power supply (
https://www.iotaengineering.com/dls55.htm).  It provides 55 amps, doesn’t
produce RFI, is audibly quiet, and rugged.  The dimensions are 9.7" x 6.7"
x 3.4" and the weight is 5.0 lbs.  Mine is on 24/7/365.  IOTA also makes
them in other output voltages and currents.

Ken
WA2LBI


On Mon, Apr 20, 2020 at 15:21 Richard Donner 
wrote:


I need  to get a new power supply for my upcoming K4 and accessories
before
my present 40 year old supply goes belly up.
I want reliability and no fussing , fixing or modifying  things. Any
recommendations.
I heard that some of the old brands are not what they used to be.
Thanks,
Richard   wa6kyr


--

Ken
WA2LBI

Sent from one of my mobile devices


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Re: [Elecraft] Power supply for KS

[Rick Bates, NK7I]

Wayne has said that 14.2V is desirable (as read on the display, so 
~14.4V at the source AND the input connector at the radio).  This 
provides a more clean signal.


It's also important to not allow voltage sag under load (for the same 
reasons).


Just make sure that if the power supply causes noise, that you can 
return it without cost.  Then your decision is switcher vs analog, each 
work well; each have issues or 'features'.


73,
Rick NK7I

On 4/20/2020 12:59 PM, Richard Donner wrote:

Hi Ken
Thanks for the info.
I am  not in a rush yet.   I noticed that the voltage is 13.4.. Maybe a
little higher might be better.  Not sure on the last point.
I will check what else they make
TU   73
Richard


On Mon, Apr 20, 2020 at 12:51 PM Ken Winterling  wrote:


Richard,

I use an IOTA DLS-55 SMPS power supply (
https://www.iotaengineering.com/dls55.htm).  It provides 55 amps, doesn’t
produce RFI, is audibly quiet, and rugged.  The dimensions are 9.7" x 6.7"
x 3.4" and the weight is 5.0 lbs.  Mine is on 24/7/365.  IOTA also makes
them in other output voltages and currents.

Ken
WA2LBI


On Mon, Apr 20, 2020 at 15:21 Richard Donner 
wrote:


I need  to get a new power supply for my upcoming K4 and accessories
before
my present 40 year old supply goes belly up.
I want reliability and no fussing , fixing or modifying  things. Any
recommendations.
I heard that some of the old brands are not what they used to be.
Thanks,
Richard   wa6kyr


--

Ken
WA2LBI

Sent from one of my mobile devices


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Re: [Elecraft] Power supply for KS

[Richard Donner]

Hi Ken
Thanks for the info.
I am  not in a rush yet.   I noticed that the voltage is 13.4.. Maybe a
little higher might be better.  Not sure on the last point.
I will check what else they make
TU   73
Richard


On Mon, Apr 20, 2020 at 12:51 PM Ken Winterling  wrote:

> Richard,
>
> I use an IOTA DLS-55 SMPS power supply (
> https://www.iotaengineering.com/dls55.htm).  It provides 55 amps, doesn’t
> produce RFI, is audibly quiet, and rugged.  The dimensions are 9.7" x 6.7"
> x 3.4" and the weight is 5.0 lbs.  Mine is on 24/7/365.  IOTA also makes
> them in other output voltages and currents.
>
> Ken
> WA2LBI
>
>
> On Mon, Apr 20, 2020 at 15:21 Richard Donner 
> wrote:
>
>> I need  to get a new power supply for my upcoming K4 and accessories
>> before
>> my present 40 year old supply goes belly up.
>> I want reliability and no fussing , fixing or modifying  things. Any
>> recommendations.
>> I heard that some of the old brands are not what they used to be.
>> Thanks,
>> Richard   wa6kyr
>>
> --
>
> Ken
> WA2LBI
>
> Sent from one of my mobile devices
>
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Re: [Elecraft] USB Noise core gets hot when operating FT*?

[Rick Bates, NK7I]

Jerry,

Ignoring how you've set up your station for the moment (every station 
has compromises but some push that to an extreme); the shutdown  of the 
connection is likely that RF got into the USB cable (as demonstrated by 
the hot ferrite) which caused the USB port hardware to lock up.


USB hardware can 'stick' so it won't work properly, a complete power 
cycle empties it of any charge, 'unsticking' the hardware.  (Yah a gross 
simplification, but you get the point.)


The only SURE way to restore it to function (assuming it's not blown) is 
a complete power down (unplugged from all power, let the power supply 
drain, disconnect the laptop battery, count another ten seconds) and 
restart.  That is why it worked after you 'cooled it off'.


If you can shift to a real serial port (not a serial dongle), that will 
help.  USB is RF intolerant compared to serial.  It's simplest to avoid 
USB as much as feasible near any RF.


If you can't avoid USB, you'll need to add a lot more ferrite or better 
yet, improve the antenna situation dramatically.


In the cases I MUST run a USB connection, I distance the antenna from 
the computer as much as possible and I run <100 watts (QRP to me), but 
generally that's when I run a portable station.  Jim, K9YC will tell you 
it's related to 'Pin 1' and the short version is that is has to do with 
bonding all things to a common ground; USB devices often ignore this.


In a few cases, improved bonding between the computer and radio /may/ 
help, but I'd have low hopes if the antenna is mere feet away.  Take the 
hot ferrite as a warning sign, it's not a healthy environment.


73,
Rick NK7I


On 4/18/2020 5:46 PM, ae...@carolinaheli.com wrote:

Today I was working a digital mode (FT8) and lost connection to the radio. I
cycled power with no success. On reseating the USB connection at the
computer I felt the ferrite core was HOT. The cable didn't feel hot at all.
I'm using a 20m hamstick in the office as my antenna. I shut everything down
to cool off. Afterwards everything seems to be working correctly.

Any ideas?

Tnx and 73

Jerry D. Moore

AE4PB

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Re: [Elecraft] Power supply for KS

[Ken Winterling]

Richard,

I use an IOTA DLS-55 SMPS power supply (
https://www.iotaengineering.com/dls55.htm).  It provides 55 amps, doesn’t
produce RFI, is audibly quiet, and rugged.  The dimensions are 9.7" x 6.7"
x 3.4" and the weight is 5.0 lbs.  Mine is on 24/7/365.  IOTA also makes
them in other output voltages and currents.

Ken
WA2LBI


On Mon, Apr 20, 2020 at 15:21 Richard Donner  wrote:

> I need  to get a new power supply for my upcoming K4 and accessories before
> my present 40 year old supply goes belly up.
> I want reliability and no fussing , fixing or modifying  things. Any
> recommendations.
> I heard that some of the old brands are not what they used to be.
> Thanks,
> Richard   wa6kyr
>
-- 

Ken
WA2LBI

Sent from one of my mobile devices
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Re: [Elecraft] K2 Year

[Don Wilhelm]

When do you mean?  There was no text in your post.  Did you send in 
HTML?  If so, mailman would have stripped it out - you must use plain text.


The K2 was initially designed and released to Field Testing in 1998. 
There have been several design improvements since then, and at the time 
of SN3000, the boards were re-done to incorporated all the upgrades on 
the board.  The only change since SN3000 is the keying waveform upgrade 
which is installed as part of the kit starting with SN 4660 if I recall. 
 The kits are still being shipped and the serial numbers are 
approaching 8000.


I don't recall the years each of the upgrades were released.
Any early K2 can be upgraded to the current level with the kits and 
instructions from Elecraft.


73,
Don W3FPR

On 4/20/2020 1:18 PM, Aaron wrote:



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Re: [Elecraft] KAT4

[Nr4c]

The K3 line has had this same range ATU from the beginning. 

Sent from my iPhone
...nr4c. bill


> On Apr 20, 2020, at 1:31 PM, Charlie T  wrote:
> 
> Well this MAY be a valid question, since I believe for example, the IC-7300 
> and/or  IC-7610 have an "emergency" mode where the power is cut back to 50 
> watts and the allowable tuner's SWR range is extended from its normal full 
> power mismatch capability.
> If I remember correctly, its only 3:1 at 100 W, but will match an "emergency" 
> use antenna if you have to.
> 
> 10: 1 capability DOES put some hefty restraints on an internal tuner.
> 
> 73, Charlie k3ICH
> 
> 
> 
> 
> -Original Message-
> From: elecraft-boun...@mailman.qth.net  On 
> Behalf Of David Bunte
> Sent: Monday, April 20, 2020 9:03 AM
> To: Charles Sells 
> Cc: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] KAT4
> 
> Charles -
> 
> I don't "know" what the power handling capabilities are, but think I can 
> safely assume that if it is in the K4 it can handle the power of the K4. I 
> trust that Wayne, Eric, or someone else who "knows" the answer will chime in 
> when they are able.
> 
> 73 de Dave - K9FN
> 
>> On Mon, Apr 20, 2020 at 8:25 AM Charles Sells 
>> wrote:
>> 
>> I can see from the literature that is on the website that the KAT4 ATU 
>> will handle a 10:1 matching range but don’t see what the power 
>> handling capabilities are.
>> 
>> Anyone know?
>> 
>> 73
>> Charles
>> W4PPP
>> 
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[Elecraft] Power supply for KS

[Richard Donner]

I need  to get a new power supply for my upcoming K4 and accessories before
my present 40 year old supply goes belly up.
I want reliability and no fussing , fixing or modifying  things. Any
recommendations.
I heard that some of the old brands are not what they used to be.
Thanks,
Richard   wa6kyr
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Re: [Elecraft] SSB Net 4-19-2020

[Bill Frantz]

I had my KX3 out on a picnic table with an AX1 antenna here in 
Peterborough, NH. I could hear NC0JW quite strongly and WB9JNZ 
barely. I was having trouble transmitting at 5 watts, as 
sometimes the radio would power off. I am assuming that either 
the internal batteries weren't charged, or that there is a bad 
connection somewhere in the battery holder. Since the batteries 
all read over 1.2 volts when I checked them afterwards, I'm 
guessing the bad connection.


73 Bill AE6JV

On 4/20/20 at 2:32 PM, ela...@sbcglobal.net (Eric Lanzl) wrote:

Here is the list of stations checking in to the SSB Net this 
past Sunday 4-18-2020. Once again, a big thank you to the relay 
stations who always help to hear the stations that I do not 
hear. Everyone is welcome to check in regardless of the type of 
radio. We now have a 40 m net which takes place at 18:45 Z. on 
or about 7.280. This is  a new net hosted by Steve WM6P. 
Please join us to check in or to have a nice qso following the 
net.     ...


---
Bill Frantz| Concurrency is hard. 12   | Periwinkle
(408)348-7900  | out 10 programmers get it | 150 Rivermead 
Rd #235
www.pwpconsult.com | wrong.  - Jeff Frantz | Peterborough, 
NH 03458


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Re: [Elecraft] Some K4 updates from the engineering department

[Ian Kahn, NV4C]

Wayne,

Thank you for this update. I am eagerly awaiting information on the K4 
kits and when they will be available (I know, not for a while yet ;-)).


My only regret with my K3, s/n 261, is that I bought it, and its 
accompanying P3, used. Consequently, I didn't get the joy of building 
them myself. I built my KPA500 and KAT500. Aside from dropping the tiny 
fasteners into the deep pile carpet in the dining room, I loved every 
minute of it. I've thoroughly enjoyed my K-Line, and look forward to 
upgrading to the K4 (and maybe the KPA1500, if the funds hold out).


73 de,

Ian, NV4C

On 4/19/20 3:46 PM, Wayne Burdick wrote:

Greetings from locked-down California I hope everyone, near and far, is 
staying safe!

I thought I'd take a break from playing with the K4 and tweaking firmware to 
give everyone a status report from the engineering side. (Eric has been keeping 
everyone informed about how Elecraft has been affected by the pandemic more 
generally.)

These musings are in no particular order. I hope they help satisfy those who 
recently posted with questions, info-cravings, etc.

* * *

Reference Oscillator

The K4 includes a stable internal TXCO, standard, as well as the ability to 
lock to an external 10 MHz reference. We just completed a round of testing on 
this feature.

The internal TCXO is accurate to within +/- .28 ppm with no calibration and no 
external reference connected. There's a menu entry for dialing this in as tight 
as +/- .02 PPM (+/- 1 Hz at 50 MHz). Connecting an external reference will hold 
it even closer, and of course keep it there over an even wider temperature 
range.

Panadapter Controls

Thanks to the efforts of our [working-at-home] software team, the panadapter 
controls just keep getting better. When you tap DISPLAY, you're presented with 
14 easy to use display functions. But we took things a step further by allowing 
you to specify whether to adjust the current parameter on LCD, EXT, or both 
(when an external monitor is attached), and on main, sub, or both (when in 
dual-display mode). You can independently specify single or dual-pan for LCD 
and external monitor. For example, you could have dual-Pan on a large HDMI 
monitor, while setting the LCD to monitor just main or sub RX.

Stereo Audio

Receive audio provides independent left and right channels for both headphones and 
external speakers. When used in single-receive mode, this allows you to use simulated 
stereo or "pitch mapping"-- both very effective at relieving listening fatigue. 
I've been using this a lot in DXing and QRP work. Full stereo also comes into play in 
diversity mode, when listening to pileups, or just monitoring two separate bands. Even 
with a basic K4, the two receivers can be set to any two bands, and you can operate 
cross-band split. The K4D adds a second set of band-pass filters and a second A-to-D 
converter to greatly improve out-of-band rejection when monitoring different bands.

Receive Antenna Controls

We recently made some improvements in this area. In addition to main RX ant and sub RX ant 
selection switches, there are now separate icons showing which antennas are in use: one for main 
RX, one for sub RX, and one for TX antenna. Main and sub receivers default to the TX antenna, but 
you can select any of the antenna jacks for assignment to each receiver independently. This updates 
the icons accordingly. You can also assign names to antenna ports using a pop-up alphanumeric 
keyboard. On my K4, I have names for the three antennas connected to my KAT4 ATU, as well as 
"SIG GEN" for the RX ANT IN 1 jack and "LOOP" for RX ANT IN 2.

RF Gain Controls

The ATTN switch brings up a selection tool that allows you to turn the 
attenuator on/off and select attenuation from 0 to 21 dB in 3-dB steps. (As 
with all receive and transmit controls, these settings are stored per-band and 
per-receiver.) You can also dial in per-receiver RF GAIN (0 to -60 dB, with 
digital readout) and preamp setting (off/pre1/pre2). All gain settings are now 
taken into account when calculating S-meter and panadapter reference levels.

Miscellaneous Controls

Compared the the K3S, the K4 has numerous additional controls, resulting in a lot 
less use of the menu. Each receiver has a collection of per-mode settings (tap MAIN 
RX or SUB RX, respectively), as does the transmitter (tap the TX button). There are 
dedicated switches for TUNE LP (user-specified low-power TUNE setting), REM ANT (for 
future control of remote antenna switches, rotators, etc.), VFO B>A (in addition 
to the usual A>B), AUTO spot (in addition to SPOT), PF1-PF4 (plus another 14 user 
functions, Fn 1-14, via a touch function), and a separate audio BALance knob 
function, the behavior of which could be adapted to various operator needs in the 
future.

Touch Controls

We're sure you'll find, as we have, that the K4's touch screen interface is 
fast and convenient to use. To capitalize on this, we've been adding new touch 
features. To 

Re: [Elecraft] USB Noise core gets hot when operating FT*?

[David Gilbert]

Hi, Jim.

I think he was talking about the ferrite core embedded in the USB 
cable.  Check the title of his post.


But for sure, his setup is a really poor one.

73,
Dave   AB7E



On 4/20/2020 11:33 AM, Jim Brown wrote:

On 4/18/2020 5:46 PM, ae...@carolinaheli.com wrote:

I felt the ferrite core was HOT. The cable didn't feel hot at all.
I'm using a 20m hamstick in the office as my antenna.


That's an "un-natural act" -- the antenna is not designed for that 
application, and, among other things, requires a good connection to 
the chassis of a vehicle or something similar to act as a 
counterpoise. Without a counterpoise, the coax acts as a radial. At 
the very least, you should provide radials to act as a counterpoise.


There are thousands of ferrite parts, all of them very different from 
each other. Exactly WHICH "ferrite core" are you using (part number, 
mfr, mix), where is it in the system? Are multiple turns wound through 
it?


73, Jim K9YC


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Re: [Elecraft] What's the best method to send high speed CW?

[Salvatore Ted K2QMF]

Practice!! 

On 4/20/2020 2:21:53 PM, ae...@carolinaheli.com  wrote:
What's the best method to send high speed CW with a K3S via Computer?
Serial adapter to the Key port or software via USB or ??
73
Jerry D. Moore
..

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Re: [Elecraft] USB Noise core gets hot when operating FT*?

[Jim Brown]

On 4/18/2020 5:46 PM, ae...@carolinaheli.com wrote:

I felt the ferrite core was HOT. The cable didn't feel hot at all.
I'm using a 20m hamstick in the office as my antenna.


That's an "un-natural act" -- the antenna is not designed for that 
application, and, among other things, requires a good connection to the 
chassis of a vehicle or something similar to act as a counterpoise. 
Without a counterpoise, the coax acts as a radial. At the very least, 
you should provide radials to act as a counterpoise.


There are thousands of ferrite parts, all of them very different from 
each other. Exactly WHICH "ferrite core" are you using (part number, 
mfr, mix), where is it in the system? Are multiple turns wound through it?


73, Jim K9YC


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[Elecraft] SSB Net 4-18-2-20

[Eric Lanzl]

Here is the list of stations checking in to the SSB Net this past Sunday 
4-18-2020. Once again, a big thank you to the relay stations who always help to 
hear the stations that I do not hear. Everyone is welcome to check in 
regardless of the type of radio. We now have a 40 m net which takes place at 
18:45 Z. on or about 7.280. This is  a new net hosted by Steve WM6P. Please 
join us to check in or to have a nice qso following the net. 
    
 
Call Name  State   Radio    Serial #  QRP  
Notes

WB9JNZ  Eric    IL    K3  
4017    Net Control

K8NU/7   Carl   OH/WA         Yaesu FT    2000  
       Relay Station

KO5V   Jim    NM    K2/100     7225 
            Relay Station

WW4JF   John TN   K3 / K3S   6185 / 
11177      

NC0JW    Jim    CO KX3  
1356    Relay Station

W4DML   Doug    TN         K3   
6433      

N6PGQ    Bob   CA   K3   
5891      

W1NGA   Al   CO K3    
5765      

AE1E  Ken   NM    K3S   
11611       

KS6F  Guy   CA K3S  
11672       

KF7ZN    Ron   UT       K3S 
10832       

K7BRR    Bill AZ  K3/ K3S  5545 
/ 10939      

KN4MIV   Jim    FL     Yaesu     
FT100D       

N4NRW   Roger   SC K3   
1318      

K7JG   John WA     KX3    
3519      

WM6P Steve   GA    K3S 
11453       

AI4VZ   George    GA         K3    
2412      

K6VWE    Stan  MI       K3  
 650        

AB9PR Derick  IL     K3     
 8310      

N7BDL Terry    AZ    K3S  
10373       

W7QHD   Kurt  AZ    K2/100 / Kx3    1538 / 
8697        

KC1ACL   Steve   NM       KX3   
10677       

KB9AVO   Paul  IN     K3S 
11103       

NS7P    Phil    OR K3   
  1826      

N0MPM    Mike IA       K3S   
10514       

VE7JBT    Don   BC  KX3    
8566    Qrp5 watts    

 


 
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Re: [Elecraft] K4

[K8TE]

Ralph,

You answered your own question although part of your description doesn't
logically make sense.  If the chain link fence is the source of the mixing,
how can your FT-1000 out-perform your K3?  If the mixing occurs in the fence
(very possible at a dissimilar junction), then that junction generates an
unwanted signal in the bands you use.  Only disconnecting the antenna from
the transceiver will solve that problem.  The filter protects the
transceiver's front end and has no impact on the fence's mixing capability.

I used to work for the company that operates our local (770-KKOB) 50 KW
electron emitter.  It is line-of-sight from our home.  I use a high pass
filter in between the antenna and K3 to reduce its impact on 160m.  The
"standard" MFJ antenna analyzer won't work properly with that much RF in the
neighborhood.

Living in New Mexico, rust is not a big problem for chain link fences or
cars/trucks.  However, the 50 KW transmitter is a huge problem for many
devices, especially telephones, in the neighborhood.  We used to provide a
lot of phone line ferrite filters before cell phones became so abundant.

It's difficult to solve problems without understanding their causes.  Good
luck!  73, Bill, K8TE



--
Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] OT Recommendation Audio Spectrum Analyzer app for Win10

[David Gilbert]

Both Goldwave (which I use) and WavePad are pretty sophisticated and 
cost less than $50 each for a permanent license.


At least check out their respective web pages ... the pictures are very 
pretty!  ;)


73,
Dave   AB7E


On 4/20/2020 8:50 AM, gregg.w6i...@gmail.com wrote:

Looking for recommendations

  


Thanks in advance

Gregg W6IZT


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Re: [Elecraft] USB Noise core gets hot when operating FT*?

[donovanf]

Definitely 


You can prove it to yourself by connecting a dummy load to your K3 


73 
Frank 
W3LPL 

- Original Message -

From: ae...@carolinaheli.com 
To: donov...@starpower.net, elecraft@mailman.qth.net 
Sent: Monday, April 20, 2020 5:52:57 PM 
Subject: RE: [Elecraft] USB Noise core gets hot when operating FT*? 



Are you saying that’s what’s causing the ferrite core on the USB cable to heat 
up? 


Jerry Moore 
Cell: 803-431-1870 



From: donov...@starpower.net  
Sent: Monday, April 20, 2020 1:52 PM 
To: elecraft@mailman.qth.net 
Subject: Re: [Elecraft] USB Noise core gets hot when operating FT*? 


You're safe, but obviously your K3 isn't... 
- Original Message -


From: ae...@carolinaheli.com 
To: donov...@starpower.net , ae...@carolinaheli.com 
Cc: elecraft@mailman.qth.net 
Sent: Monday, April 20, 2020 5:40:26 PM 
Subject: RE: [Elecraft] USB Noise core gets hot when operating FT*? 
I’m not sure, but, it’s a good point. I’m only running 50Watts. 



From: donov...@starpower.net < donov...@starpower.net > 
Sent: Monday, April 20, 2020 1:36 PM 
To: ae...@carolinaheli.com 
Cc: elecraft@mailman.qth.net 
Subject: Re: [Elecraft] USB Noise core gets hot when operating FT*? 


With your antenna that close, are you sure you're not exceeding human 

body RF exposure requirements? 



73 

Frank 

W3LPL 



From: ae...@carolinaheli.com 
To: elecraft@mailman.qth.net 
Sent: Sunday, April 19, 2020 12:46:55 AM 
Subject: [Elecraft] USB Noise core gets hot when operating FT*? 

Today I was working a digital mode (FT8) and lost connection to the radio. I 
cycled power with no success. On reseating the USB connection at the 
computer I felt the ferrite core was HOT. The cable didn't feel hot at all. 
I'm using a 20m hamstick in the office as my antenna. I shut everything down 
to cool off. Afterwards everything seems to be working correctly. 

Any ideas? 

Tnx and 73 

Jerry D. Moore 

AE4PB 

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Re: [Elecraft] USB Noise core gets hot when operating FT*?

[donovanf]

You're safe, but obviously your K3 isn't... 

- Original Message -

From: ae...@carolinaheli.com 
To: donov...@starpower.net, ae...@carolinaheli.com 
Cc: elecraft@mailman.qth.net 
Sent: Monday, April 20, 2020 5:40:26 PM 
Subject: RE: [Elecraft] USB Noise core gets hot when operating FT*? 



I’m not sure, but, it’s a good point. I’m only running 50Watts. 



From: donov...@starpower.net  
Sent: Monday, April 20, 2020 1:36 PM 
To: ae...@carolinaheli.com 
Cc: elecraft@mailman.qth.net 
Subject: Re: [Elecraft] USB Noise core gets hot when operating FT*? 


With your antenna that close, are you sure you're not exceeding human 

body RF exposure requirements? 



73 

Frank 

W3LPL 
- Original Message -


From: ae...@carolinaheli.com 
To: elecraft@mailman.qth.net 
Sent: Sunday, April 19, 2020 12:46:55 AM 
Subject: [Elecraft] USB Noise core gets hot when operating FT*? 

Today I was working a digital mode (FT8) and lost connection to the radio. I 
cycled power with no success. On reseating the USB connection at the 
computer I felt the ferrite core was HOT. The cable didn't feel hot at all. 
I'm using a 20m hamstick in the office as my antenna. I shut everything down 
to cool off. Afterwards everything seems to be working correctly. 

Any ideas? 

Tnx and 73 

Jerry D. Moore 

AE4PB 

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Re: [Elecraft] USB Noise core gets hot when operating FT*?

[AE4PB]

I’m not sure, but, it’s a good point. I’m only running 50Watts.

 

From: donov...@starpower.net  
Sent: Monday, April 20, 2020 1:36 PM
To: ae...@carolinaheli.com
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] USB Noise core gets hot when operating FT*?

 

With your antenna that close, are you sure you're not exceeding human

body RF exposure requirements?

 

73

Frank

W3LPL

  _  

From: ae...@carolinaheli.com  
To: elecraft@mailman.qth.net  
Sent: Sunday, April 19, 2020 12:46:55 AM
Subject: [Elecraft] USB Noise core gets hot when operating FT*?

Today I was working a digital mode (FT8) and lost connection to the radio. I
cycled power with no success. On reseating the USB connection at the
computer I felt the ferrite core was HOT. The cable didn't feel hot at all.
I'm using a 20m hamstick in the office as my antenna. I shut everything down
to cool off. Afterwards everything seems to be working correctly.

Any ideas?

Tnx and 73

Jerry D. Moore

AE4PB

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Re: [Elecraft] USB Noise core gets hot when operating FT*?

[donovanf]

With your antenna that close, are you sure you're not exceeding human 
body RF exposure requirements? 


73 
Frank 
W3LPL 

- Original Message -

From: ae...@carolinaheli.com 
To: elecraft@mailman.qth.net 
Sent: Sunday, April 19, 2020 12:46:55 AM 
Subject: [Elecraft] USB Noise core gets hot when operating FT*? 

Today I was working a digital mode (FT8) and lost connection to the radio. I 
cycled power with no success. On reseating the USB connection at the 
computer I felt the ferrite core was HOT. The cable didn't feel hot at all. 
I'm using a 20m hamstick in the office as my antenna. I shut everything down 
to cool off. Afterwards everything seems to be working correctly. 

Any ideas? 

Tnx and 73 

Jerry D. Moore 

AE4PB 

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Re: [Elecraft] K2 Year

[Frank Krozel]

1999?
-73-  FrankKG9H
kg9hfr...@gmail.com




> On Apr 20, 2020, at 12:18 PM, Aaron  wrote:
> 
> 
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Re: [Elecraft] KAT4

[Charlie T]

Well this MAY be a valid question, since I believe for example, the IC-7300 
and/or  IC-7610 have an "emergency" mode where the power is cut back to 50 
watts and the allowable tuner's SWR range is extended from its normal full 
power mismatch capability.
If I remember correctly, its only 3:1 at 100 W, but will match an "emergency" 
use antenna if you have to.

10: 1 capability DOES put some hefty restraints on an internal tuner.

73, Charlie k3ICH




-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of David Bunte
Sent: Monday, April 20, 2020 9:03 AM
To: Charles Sells 
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KAT4

Charles -

I don't "know" what the power handling capabilities are, but think I can safely 
assume that if it is in the K4 it can handle the power of the K4. I trust that 
Wayne, Eric, or someone else who "knows" the answer will chime in when they are 
able.

73 de Dave - K9FN

On Mon, Apr 20, 2020 at 8:25 AM Charles Sells 
wrote:

> I can see from the literature that is on the website that the KAT4 ATU 
> will handle a 10:1 matching range but don’t see what the power 
> handling capabilities are.
>
> Anyone know?
>
> 73
> Charles
> W4PPP
>
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[Elecraft] USB Noise core gets hot when operating FT*?

[AE4PB]

Today I was working a digital mode (FT8) and lost connection to the radio. I
cycled power with no success. On reseating the USB connection at the
computer I felt the ferrite core was HOT. The cable didn't feel hot at all.
I'm using a 20m hamstick in the office as my antenna. I shut everything down
to cool off. Afterwards everything seems to be working correctly.

Any ideas?

Tnx and 73

Jerry D. Moore

AE4PB

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[Elecraft] What's the best method to send high speed CW?

[AE4PB]

What's the best method to send high speed CW with a K3S via Computer?
Serial adapter to the Key port or software via USB or ??
73
Jerry D. Moore
..

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[Elecraft] K2 Year

[Aaron]

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Re: [Elecraft] OT Recommendation Audio Spectrum Analyzer app for Win10

[Peter Eijlander (PA0PJE)]

Look at DL2SBA's pages:
He did a comparison between 2 2-tone audio generators, one a kit from 
Box73/Funkamateur and the other a Siglent function generator.


http://dl2sba.com/index.php/funk/shack/354-2-tone-generator-fa-2-nf

He used this application:

https://www.audiotester.de/mainE.htm

73,
Peter PA0PJE



On 4/20/2020 8:50 AM, gregg.w6i...@gmail.com wrote:

Looking for recommendations

   


Thanks in advance

Gregg W6IZT


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[Elecraft] No High Power on K3

[Keith Trinity]

After you change config menu intem KPA3 to nor;
You have to CYCLE POWER  with the front power button (not pull DC) to "set"
the change.
Then watch for ERR 12V when you ask for power above 12W (8W 6m).
If you get ERR 12V, then the circuit breaker or something in that circuit
is open, like burnt pins in the older radios for the DC power to the KPA3.
Keith WE6R
Elecraft K3 Tech.
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Re: [Elecraft] OT Recommendation Audio Spectrum Analyzer app for Win10

[Don Wilhelm]

Gregg,

You can download Spectrogram from my website www.w3fpr.com.  Look near 
the bottom of the home page for the link.  I use version 16 on Windows 10.


Spectrum Lab is another alternative, but the learning curve is steeper 
than with Spectrogram.


73,
Don W3FPR

On 4/20/2020 11:50 AM, gregg.w6i...@gmail.com wrote:

Looking for recommendations


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Re: [Elecraft] OT Recommendation Audio Spectrum Analyzer app for Win10

[Wes]

Spectrum Lab is the gold standard. Be prepared for a steep learning curve.

Maybe Audacity depending on your needs.

Wes  N7WS




On 4/20/2020 8:50 AM, gregg.w6i...@gmail.com wrote:

Looking for recommendations

  


Thanks in advance

Gregg W6IZT


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[Elecraft] OT Recommendation Audio Spectrum Analyzer app for Win10

[gregg.w6izt1]

Looking for recommendations

 

Thanks in advance

Gregg W6IZT

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Re: [Elecraft] KAT4

[Wayne Burdick]

The KAT4 is rated at 120 W to match the K4.

Some competing ATUs only go to 3:1 or so. For someone on a small lot trying to 
use all bands, or during field operation, allowing for up to 10:1 means you use 
antennas on bands on which they're not resonant. 

73,
Wayne
N6KR




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Re: [Elecraft] KAT4

[Jay Rutherford]

Hi Charles,

I think you're confusing the KAT4 tuner inside the K4 and the KAT500 tuner. The 
former will handle the maximum power that the K4 can put out barefoot. If you 
want to run the KPA500 amp and need a tuner, you will need the KAT500 tuner for 
that purpose.

At least that is my understanding!

73
Jay K3BH



On Mon, Apr 20, 2020, at 09:02, David Bunte wrote:
> Charles -
> 
> I don't "know" what the power handling capabilities are, but think I can
> safely assume that if it is in the K4 it can handle the power of the K4. I
> trust that Wayne, Eric, or someone else who "knows" the answer will chime
> in when they are able.
> 
> 73 de Dave - K9FN
> 
> On Mon, Apr 20, 2020 at 8:25 AM Charles Sells 
> wrote:
> 
> > I can see from the literature that is on the website that the KAT4 ATU
> > will handle a 10:1 matching range but don’t see what the power handling
> > capabilities are.
> >
> > Anyone know?
> >
> > 73
> > Charles
> > W4PPP
> >
> > __
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Re: [Elecraft] KAT4

[john]

You would get much better performance fixing a 10:1 SWR antenna than  
using a KAT4 tuner.  For starters you will loose 1/2 your power just  
going though 100 ft of RG213 at 14Mhz.



John KK9A

[Elecraft] KAT4
Charles Sells charles at sellsfamily.net
Mon Apr 20 08:24:12 EDT 2020
Previous message: [Elecraft] Elecraft CW Net Report
Next message: [Elecraft] KAT4

I can see from the literature that is on the website that the KAT4 ATU  
will handle a 10:1 matching range but don’t see what the power  
handling capabilities are.


Anyone know?

73
Charles
W4PPP


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Re: [Elecraft] KAT4

[Nr4c]

Guys. The KAT4 is installed inside the K4 transceiver.  It could not be used 
with an external amplifier.  The matching unit for the KPA500 must go between 
the Amp output and the antenna. 

Sent from my iPhone
...nr4c. bill


> On Apr 20, 2020, at 9:55 AM, Charles Sells  wrote:
> 
> Dave
> 
> It would be really nice if it would handle the 500 watts that the KPA500 puts 
> out.
> 
> That might be wishful thinking.
> 
> 73
> Charles
> W4PPP
> 
> From: David Bunte 
> Date: Monday, April 20, 2020 at 9:03 AM
> To: Charles Sells 
> Cc: "elecraft@mailman.qth.net" 
> Subject: Re: [Elecraft] KAT4
> 
> Charles -
> 
> I don't "know" what the power handling capabilities are, but think I can 
> safely assume that if it is in the K4 it can handle the power of the K4. I 
> trust that Wayne, Eric, or someone else who "knows" the answer will chime in 
> when they are able.
> 
> 73 de Dave - K9FN
> 
> On Mon, Apr 20, 2020 at 8:25 AM Charles Sells 
> mailto:char...@sellsfamily.net>> wrote:
> I can see from the literature that is on the website that the KAT4 ATU will 
> handle a 10:1 matching range but don’t see what the power handling 
> capabilities are.
> 
> Anyone know?
> 
> 73
> Charles
> W4PPP
> 
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Re: [Elecraft] KAT4

[Nr4c]

It’s an internal accessory for a 100 Watt transmitter.   I’d guess it will 
handle up to 150 Watts or so. 

Sent from my iPhone
...nr4c. bill


> On Apr 20, 2020, at 8:26 AM, Charles Sells  wrote:
> 
> I can see from the literature that is on the website that the KAT4 ATU will 
> handle a 10:1 matching range but don’t see what the power handling 
> capabilities are.
> 
> Anyone know?
> 
> 73
> Charles
> W4PPP
> 
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Re: [Elecraft] KAT4

[Charles Sells]

Dave

It would be really nice if it would handle the 500 watts that the KPA500 puts 
out.

That might be wishful thinking.

73
Charles
W4PPP

From: David Bunte 
Date: Monday, April 20, 2020 at 9:03 AM
To: Charles Sells 
Cc: "elecraft@mailman.qth.net" 
Subject: Re: [Elecraft] KAT4

Charles -

I don't "know" what the power handling capabilities are, but think I can safely 
assume that if it is in the K4 it can handle the power of the K4. I trust that 
Wayne, Eric, or someone else who "knows" the answer will chime in when they are 
able.

73 de Dave - K9FN

On Mon, Apr 20, 2020 at 8:25 AM Charles Sells 
mailto:char...@sellsfamily.net>> wrote:
I can see from the literature that is on the website that the KAT4 ATU will 
handle a 10:1 matching range but don’t see what the power handling capabilities 
are.

Anyone know?

73
Charles
W4PPP

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Re: [Elecraft] KAT4

[David Bunte]

Charles -

I don't "know" what the power handling capabilities are, but think I can
safely assume that if it is in the K4 it can handle the power of the K4. I
trust that Wayne, Eric, or someone else who "knows" the answer will chime
in when they are able.

73 de Dave - K9FN

On Mon, Apr 20, 2020 at 8:25 AM Charles Sells 
wrote:

> I can see from the literature that is on the website that the KAT4 ATU
> will handle a 10:1 matching range but don’t see what the power handling
> capabilities are.
>
> Anyone know?
>
> 73
> Charles
> W4PPP
>
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[Elecraft] KAT4

[Charles Sells]

I can see from the literature that is on the website that the KAT4 ATU will 
handle a 10:1 matching range but don’t see what the power handling capabilities 
are.

Anyone know?

73
Charles
W4PPP

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Re: [Elecraft] KATxxx Remote Tuner

[CUTTER DAVID via Elecraft]

For those with antennas that are "nearly right," eg provide <1.5:1 in a sweet 
spot but not the entire band, like a beam or a dipole, a commercial matcher 
that covers a huge range is not justified.  A simple multi-tapped transformer 
would satisfy those needs.  A relay-switched unit should be relatively easy to 
put in an outdoor unit quite inexpensively.  I've seen tuners built into 
plastic tool boxes, small plastic rubbish bins, food boxes.  Take care to use 
appropriate drain holes and critter filter. 

David G3UNA/G6CP


> On 19 April 2020 at 23:06 W2xj  wrote:
> 
> 
> you get what you pay for. 
> 
> Sent from my iPad
> 
> > On Apr 19, 2020, at 5:58 PM, Grant Youngman  wrote:
> > 
> > At a “mere” $3K each, the AT-615B might be a great product, but is hardly 
> > what I would call a universally accessible solution … 
> > 
> > Grant NQ5T
> > 
> >> On Apr 19, 2020, at 5:13 PM, W2xj  wrote:
> >> 
> >> You can get an AT-615B from Array Solutions now and do this. I put 10 in a 
> >> club station for our various wire arrays. They do everything you need.
> >> 
> >> BTW I disagree about this 50 Ohm antenna thing. In my world of commercial 
> >> high powered broadcasting 30 MHz and under, there are almost never 
> >> resonant, matched 50 ohm arrays.  
> >> 
> >> Sent from my iPad
> >> 
>  On Apr 19, 2020, at 8:41 AM, Richard Thorne  wrote:
> >>> 
> >>> 
> >>> Eric/Wayne,
> >>> 
> >>> Has there been any work done for a potential dedicated remote antenna 
> >>> tuner?
> >>> 
> >>> A remote tuner that could handle 500 or 1500 watts to match up with amps 
> >>> power wise (Or just a barefoot K3/K4). Maybe a black box between the LAN 
> >>> on the K4 or ACC on the K3 so control signals could be sent to the tuner 
> >>> via the coax.
> >>> 
> >>> I’m a firm believer in 50 ohm matched antennas, but if a tuner is 
> >>> required it needs to be at the feed point.
> >>> 
> >>> Rich - N5ZC
> >>> Sent from my iPad
> >>> __
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> >>> Message delivered to w...@w2xj.net
> >> 
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> > 
> > 
> 
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Re: [Elecraft] K4 capabilities

[Gary Smith]

I remember seeing Barbie Benton as the 
Playboy centerfold. I tacked that in my 
closet. 

Posting that on my wish list never did 
work...

73 :)

Gary
KA1J

> I took similar action: I took a screenshot of the downloaded K4
> brochure and had it put onto a mousepad.  So now I have a K4
> (mousepad) on my ham shack desk.  
> 
> 73
> Hoop K9QJS 
> 
> 
> On Sun, Apr 19, 2020 at 11:46 AM Ralph Parker  wrote:
> 
> > 
> > While anxiously waiting in line for the KPA500 to be released, I
> > printed out a picture of the front panel of the '500, cut it out and
> > placed it on the shelf where the '500 would go. *Then I could
> > pretend that the station was complete.* Almost as good as the real
> > thing!
> > 
> > --
> 
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> 



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Re: [Elecraft] K4 capabilities

[JK Hoop Hooper via Elecraft]

I took similar action: I took a screenshot of the downloaded K4 brochure and 
had it put onto a mousepad.  So now I have a K4 (mousepad) on my ham shack 
desk.  

73
Hoop K9QJS 


On Sun, Apr 19, 2020 at 11:46 AM Ralph Parker  wrote:

> 
> While anxiously waiting in line for the KPA500 to be released, I printed
> out a picture of the front panel
> of the '500, cut it out and placed it on the shelf where the '500 would
> go.
> *Then I could pretend that the station was complete.*
> Almost as good as the real thing!
> 
> --

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