Re: [Elecraft] whats a updated K3 called?

[hbjr]

:-D

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Wayne Burdick
Sent: Thursday, January 10, 2019 10:01 PM
To: Jamie WW3S 
Cc: Elecraft Reflector 
Subject: Re: [Elecraft] whats a updated K3 called?

...and the AF amp improvements on the DSP board, and the new VFO display
bezel, and the 5/10/15 dB attenuator on the RF board, and the lower noise
mod on the RF board :)

Wayne
N6KR


> On Jan 10, 2019, at 6:37 PM, Jamie WW3S  wrote:
> 
> what do we call an original K3 with the new preamp and synthesizer boards
in it? K3 1.5? only difference between it and a S model is the USB
board.
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> n...@elecraft.com

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delivered to h...@optilink.us

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Re: [Elecraft] OT: Astron linear PS regulation issues

[hbjr]

I bought a Rackmount 35amp Astron when I started working at my office (the 
office bought it).  We turned it on in 1993 and it is still on today.  I have a 
50 amp at home that besides the crappy meter lights (they now are illuminated 
by LEDs!), runs like a champ.

Funny though, when I find a supply with the -VDC tied to chassis ground, I 
always pull it - some Astrons do and some don't.  All of our other linear 
supplies float (HP, QJE, Acopian).  Keeps ground loops at bay!

73,
Hank
K4HYJ

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Randy Farmer
Sent: Monday, February 25, 2019 10:24 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OT: Astron linear PS regulation issues

I have two recent vintage Astron RS-35M units. They still use the exact same 
723-based regulator circuit that they have used for thirty years or more, so 
the design hasn't changed. What **may** have changed is the build quality. I 
carefully inspected both of mine right after taking delivery. I made sure the 
green wire from the AC cord was securely bonded to the chassis and checked for 
obvious soldering problems. I also tied the negative output line to the 
chassis. They have both been running like trains 24-7 for the last three years 
or so. The only failures I've had (on both units) are the stupid internal meter 
lamps.

73...
Randy, W8FN

On 2/25/2019 8:36 PM, Kevin McQuiggin (SFU) wrote:
> I have a ~30-year old Astron 13.8 VDC 20-amp supply that I got when it was 
> retired from a project at work.  I used it for low current applications for a 
> few years, then it went to storage for about 5 years.
>
> One of the two power transistors failed a few months ago and this took out 
> some other components.  I had put it back into service in a 5-10 amp 
> application.  I figure that the failure was likely just due to age and the 
> fact that the supply had been in storage for a few years.
>
> I replaced both of the power transistors, two blown diodes, the 
> electrolytics, and a couple of ICs and other components, and the supply is 
> running fine again.  Solid output at 10 amps load.
>
> Given its age I am extremely happy with it.  The internal quality and 
> components seemed good, but that may have been due to its 
> design/manufacturing era.   Not to sound like some old codger, but perhaps 
> designs aren’t as robust as they used to be.
>
> Kevin, VE7ZD

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Re: [Elecraft] OT: Astron linear PS regulation issues

[hbjr]

Filter caps bad?  AC on the DC supply side maybe?  A well made linear supply
does not make noise that has to be filtered otherwise.  All switching
supplies must be cleaned up because their design generates noise.

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of K9MA
Sent: Monday, February 25, 2019 8:13 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OT: Astron linear PS regulation issues

That's interesting. About the only way I know that a linear supply can be
noisy is if the regulator oscillates. That can easily happen. Most of them
use emitter followers, which are often unstable driving a capacitive load.
That's usually easy to fix by inserting a small inductance between the
emitter of the transistor and the load. A few turns of the appropriate sized
wire around a ferrite bead usually works.

73,
Scott K9MA

On 2/25/2019 18:57, William Rascher wrote:
> On Monday, February 25, 2019 4:26:40 PM CST Rose wrote:
>> I've found instances of regulation failures caused by loose hardware.
> With the RS-35m Astron Linear PS I have issues with noise.  I 
> purchased the PS because everyone around me swears that they are 
> great.  Well, from my experience the Powerwerx SS-30DV is far cleaner, 
> quieter, and fewer $$.  I though the problem was something along the line
of LED lighting, in my
> shack was generating the  noise.   When I used a battery for the PX3 & KX3
> in my shack during a power outage the PX3 screen was so clear I was
> stunned.I have 3 different Astron linear PS and all are noisy.


--
Scott  K9MA

k...@sdellington.us

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Re: [Elecraft] Purpose of this group

[hbjr]

I monitored this group before I bought my K3s back in October.  I have learned 
how to make cables for various things, who makes good homebrew gear (and some 
guys that sell their own stuff for K3's and KX's), and even bought some used 
Elecraft gear hear.  

I'm not sure how to call out the wrong topics...I think we should all leave 
that to the moderators 😊

Hank
K4HYJ
  

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Doug Person
Sent: Sunday, March 24, 2019 6:47 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Purpose of this group

This group is more about sharing the experience of using Elecraft products, 
making suggestions for product improvements, offering other members advice on 
best operating techniques, and so much more.  Want a suggestion on which mic to 
use with your K3s? How to setup memories for cw ops? Use external software to 
operate your rig? The best type of PC to use or best approach to physically 
interface your rig to your PC? These are just a very small set of questions you 
might ask here.

This is an active community of devoted Elecraft users. But, it's also about ham 
radio. Any kind of serious support question should go directly to Elecraft's 
outstanding support staff via email.

Doug -- KJ0F

On 3/24/2019 7:40 AM, Bill wrote:
> I have been under the assumption that this group existed as a 
> technical support center for owners/users of Elecraft equipment: A 
> place to ask questions and learn about the operation and use of said 
> equipment.
>
> I see no reason for long discussions regarding DX/contest operations, 
> the rules, politics, or other trivia of same in this group - a group 
> supporting the technical issues of owners/users.
>
> Am I correct that this is a technical group? Or, is posting space to 
> be taken up by non-technical discussions of which many users have no 
> interest?
>
> Bill W2BLC owner/user
>
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73 de Doug -- KJ0F

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[Elecraft] No SSB net today?

[hbjr]

?

 

Hank

K4HYJ

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Re: [Elecraft] K3 -- Strange speaker problem

[hbjr]

I'm a new K3s owner as of October, but I'll take a stab!  I leave phones
plugged in to the back of the rig all of the time and an external speaker
all of the time.  My settings are SPKRS = 2 and SPKR+PH =yes.

Hope that helps!

Hank
K4HYJ

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Joel Hallas
Sent: Tuesday, April 2, 2019 8:44 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 -- Strange speaker problem

Tonight, when I turned on my early (sn 431), but upgraded to current, K3, I
was surprised to find I had no speaker audio with either internal or
external speaker(s). My first thought was that I had somehow fried the
speaker AF amp chip. But then I found that the speaker audio worked fine if
the CONFIG were set to SPKR + PH = yes. That would seem to rule out the
speaker amp as the problem. 

Anyone experience this, or have any ideas?

Thanks much!

Regards, Joel Hallas, W1ZR




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[Elecraft] VHF Packet setup K3s/K144XV

[hbjr]

Hey gang.

Just double checking my setup.  I'm using a PK-232sc+ for sound card modes,
FSK RTTY, CW, and PACTOR with my K3s.  I recently added the K144XV and since
everything is already hooked up, I tried sending packet.  After tweaking the
AFSK control on the PK for proper deviation and proper ALC, I gave it a shot
to the local BBS and it works great!  Hit a Winlink gateway or two and used
a digipeater for a few more - worked great.

 

My question, is there a "mode" setting to do what I am doing, or will I need
to change the MIC input to Line-In every time I want to do FM packet instead
of FM voice?  Currently that's the only way to make it work.  On SSB,
changing to data opens the Line-In for data.  Just curious for FM.

 

BTW:  It is interesting to see the open carrier waveform on the P3 of
various 2 meter FM repeaters.  Some look "clean" in my opinion and some look
"dirty" with no voice modulation even though the dead air sounds the same.

 

I enjoy my K3s setup more every time I use it!

 

Hank

K4HYJ

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Re: [Elecraft] BIZARRE OFFERING FROM MFJ

[hbjr]

Somebody pls close this thread!

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of W2xj
Sent: Sunday, April 7, 2019 2:22 PM
To: Alan Bloom 
Cc: Elecraft Reflector 
Subject: Re: [Elecraft] BIZARRE OFFERING FROM MFJ

Mighty fine junk

Sent from my iPhone

> On Apr 7, 2019, at 10:22, Alan Bloom  wrote:
> 
> I've long had mixed feelings about MFJ.  They have some very 
> interesting, innovative, and cost-competitive products.  However 
> sometimes the quality isn't there.  For example I have an MFJ antenna 
> analyzer that was intermittent until I fixed a poor ground connection.
> I forget the details, but as I recall the problem was partly one of 
> design.
> 
> Alan N1AL
> 
>> On 2019-04-07 09:28, Wayne Burdick wrote:
>> 
>> I've used many MFJ products and in have had very little trouble with any
of them. For example, I make frequent use an MFJ-223 hand-held VNA -- it's
versatile and does the job. I've also used their manual tuners, antenna
switches, and portable/mobile whips. They have a very comprehensive product
line that's really unique in the industry.
>> 
>> That said, I do have some suggestions for MFJ's engineering team on how
they might improve their ATU. 
>> 
>> Looking at the photo, I see that they used much smaller toroidal 
>> cores for 5 of the 8 inductors in the L network. This could result in 
>> excessive heating, especially on the higher bands, at full power into 
>> a worst-case match. We specified T68 sized cores to remain 
>> conservative based on extensive testing. Also, if you click on the 
>> photo to see the details, you'll see what appears to be very 
>> inconsistent hand soldering of the SMD components. While this doesn't 
>> necessarily worsen performance or reliability, it should be done in a 
>> way that inspires confidence in the buyer. (Easy for me to say, of 
>> course. We have the luxury of mass-producing these assemblies using 
>> automated pick-and-place equipment at our fabricator in Monterey.)
>> 
>> Wayne
>> N6KR
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Re: [Elecraft] KX3 Utility problem: serial port is closed

[hbjr]

Reinstalling the KX3 utility software from the Elecraft site did nothing.

How can I check the registry values on the PC to know if that is the cause?

Hank
K4HYJ

-Original Message-
From: Dick Dievendorff  
Sent: Sunday, April 14, 2019 12:47 AM
To: donw...@embarqmail.com
Cc: HB ; Elecraft list 
Subject: Re: [Elecraft] KX3 Utility problem: serial port is closed

The kx3 gets its inventory of com ports from registry values populated by 
complete device driver installation. 

Dick, K6KR 

> On Apr 12, 2019, at 19:20, Don Wilhelm  wrote:
> 
> Hank,
> 
> In that case, the next step is to download and install the latest copy of KX3 
> Utility.
> 
> 
> 73,
> Don W3FPR
> 
>> On 4/12/2019 9:34 PM, HB wrote:
>> 
>> Don….
>> 
>> I have verified the COM port in the Device Manager but the KX3 Utility does 
>> not show any COM ports in the port window.
>> 
>> 
> 
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Re: [Elecraft] K4 Press Release

[hbjr]

I wonder when the K3S and P3 will be discontinued?

Hank
K4HYJ

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of W0FK
Sent: Thursday, May 16, 2019 7:22 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K4 Press Release

Reported on QRZNOW

https://qrznow.com/elecraft-k4-high-performance-direct-sampling-sdr/





-
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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Re: [Elecraft] K4

[hbjr]

Make a video!

Hank
K4HYJ

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Wayne Burdick
Sent: Thursday, May 16, 2019 4:56 PM
To: lmarion 
Cc: Elecraft Reflector 
Subject: Re: [Elecraft] K4


> On May 16, 2019, at 3:53 PM, lmarion  wrote:
> 
> Will you be able to remote operate with an app?

Definitely. One radio can control another, or you can use a tablet / netbook / 
PC. Via Ethernet. 

We’ll be doing showing multi-device remote control tomorrow. 

Wayne
N6KR 
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[Elecraft] KTCX03-1 high stability reference oscillator

[hbjr]

Hey Folks.

In real world "seat-of-the-pants" experience, what difference if any would I
see upgrading to the KTCX03-1?  I eventually would add the reference kit to
the internal 2 meter transverter.

 

One thought was improvement for FT8 (and eventually FT4) on HF and MFSK on 2
meters.  I have read some saw an improvement in transmitted phase noise -
especially with a linear amp.

 

I'm just trying to prioritize my K3S upgrades before there are no K3S parts
left to go around!!

 

Hank

K4HYJ

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[Elecraft] Help with K3S upgrades

[hbjr]

I have just installed the 1 PPM TXCO in my K3S.  I bought the K3S last
October as a kit and have installed many options since then.

One thing I'm concerned with is the reference calibration.  Without a good
frequency counter, I'm using WWV on 15Mhz and using beat cancelation.  My
ears are pretty good, but no match for a good frequency counter.

Any guys in the NW GA area (Tennessee, Alabama, and North Carolina area
really) that would be willing to help me set that reference calibration with
a good counter?  I'd be willing to pay you for your time!

I guess I could send the rig back to California, I just don't want to be
without it for a several weeks.

Any takers?

Hank
K4HYJ

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Re: [Elecraft] Help with K3S upgrades

[hbjr]

Good advice!!

I'll redo the procedure after the radio has been in use for an hour.  I don't 
usually have the LCD illuminated because of the lighting at my desk - does the 
display contribute that much heat?

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Mike Harris via Elecraft
Sent: Saturday, May 25, 2019 6:10 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Help with K3S upgrades

Agreed. I've have the external ref module which actually measures the TCXO 
frequency and on my K3 the drift is pretty close to over after 60 minutes. I've 
tracked it all the way to four hours. It is useful to keep an eye on the front 
panel temp (DISP - FP). The TXCO is located in close order with the front panel 
and that influences the drift. Mine usually tops out at 37 to 39C.

Regards,

Mike VP8NO



On 25/05/2019 17:24, Bob McGraw K4TAX wrote:
> Glad you found the information of assistance.I suggest a bit 
> longer warm up than 30 minutes, but for starters, 30 minutes is OK.   
> I usually go for 1 hr to 2 hrs in a temperature stable environment.
> But...that's just me.
> 
> 73
> 
> Bob, K4TAX
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Re: [Elecraft] Test. This getting to the list?

[hbjr]

Got it!

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Leroy Buller
Sent: Friday, May 31, 2019 10:19 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Test. This getting to the list?

I've been sending questions in about the K4 but no replies.

I am getting a complex here

Lee
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Re: [Elecraft] K4 standing on Sherwood's RX list

[hbjr]

Speaking of the foreseeable future 😉

How long will the K3S be in production?  I'm a new owner as of last fall and 
hope pieces/parts and upgrades will continue for some time.

Hank
K4HYJ
K3s, P3, KX3

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Wayne Burdick
Sent: Thursday, June 6, 2019 1:59 PM
To: Grant Youngman 
Cc: Elecraft Reflector 
Subject: Re: [Elecraft] K4 standing on Sherwood's RX list

To quote the K4 product brochure:

Modular, upgradeable architecture

The K4 is our radio for the present and foreseeable future, extensible in both 
software and hardware.

Wayne
N6KR


> On Jun 6, 2019, at 10:53 AM, Grant Youngman  wrote:
> 
> Certainly agree.  And you never know — if the K4 has a life-cycle 
> similar to the K3/K3S, there may one day be new (affordable) plug-in 
> 24 bit A/D boards without having to buy.a whole new radio :-)
> 
> Grant NQ5T
> K3 #2091 KX3 #8342
> 
>> On Jun 6, 2019, at 1:47 PM, Scott Manthe  wrote:
>> 
>> Where a particular rig lands on "The List" isn't the only consideration. The 
>> K4 seems improved in a number of ways beyond its raw performance compared to 
>> the K3. It is a more modern design (direct sampling) with the ability to add 
>> extra features as needed. I'm not sure I'll be upgrading soon, but the 
>> package is a lot nicer and the interface improvements (band stacking, etc.) 
>> seem to be a real step forward.
>> 


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Re: [Elecraft] 40 meter AX1

[hbjr]

K4? 

What’s that? 😝

 

 

From: KENT TRIMBLE  
Sent: Wednesday, June 12, 2019 5:07 PM
To: Hank ; elecraft@mailman.qth.net
Subject: Re: [Elecraft] 40 meter AX1

 

Hank . . .

I'm sure a minor little project called "K4" intervened.

73,

Kent  K9ZTV



On 6/12/2019 2:03 PM, Hank wrote:

 
Anyone hear any updates on the 40 meter AX1 type product?  I think it was 
called the AX1EX or similar?
 
Just curious - there was some discussion several months ago about a prototype.
 
Hank
K3S, P3, KX3
 
 
 
 
 
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Virus-free.  

 www.avg.com 

 

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Re: [Elecraft] 40 meter AX1

[hbjr]

Thank you sir for the update!!

 

Hank

K4HYJ

K3S, P3, KX3

 

From: Peter J. McClosky  
Sent: Wednesday, June 12, 2019 5:44 PM
To: Hank 
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] 40 meter AX1

 

When I spoke to them late last month, they said they were shooting for mid
September.  With a price point not set yet.

 

-

Peter J. McClosky, N7IY
Eugene, Oregon
pmcclo...@earthlink.net  
n...@arrl.net  
http://home.earthlink.net/~pmcclosky/

 

On Jun 12, 2019, at 12:03 PM, Hank mailto:h...@optilink.us> > wrote:

 


Anyone hear any updates on the 40 meter AX1 type product?  I think it was
called the AX1EX or similar?

Just curious - there was some discussion several months ago about a
prototype.

Hank
K3S, P3, KX3

 



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Re: [Elecraft] K3s Sensitive adjustment for FT8

[hbjr]

Had almost the same thing happen after the update.

Make sure that WSJT-X is using the correct Audio codec.

The slider in WSJT-X for output will override windows sound settings.

Thanks,
Hank
K3S, PS, KX3

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Gary Smith
Sent: Saturday, June 15, 2019 7:44 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] K3s Sensitive adjustment for FT8

Something new has come up with the
K3s/JTDX settings and I can't find where to adjust it to make a change. This
is new, it has been fine till a couple days ago & maybe the recent win 10
update nailed me again?

Till now, when setting the levels for Tx for FT8, I would adjust the setting
on the screen for 4-5 bars with the last one flickering by adjusting the
output with the speed/Mic knob. The line level would be somewhere around 5-7
to get this reading.

Now I have what seems like
hyper-sensitivity, overdrive in that I now get 5 solid bars with none
flickering at line level 2, I get no bars at line level 1.

With the K3s set at 20W drive: 

At line level 0 I have no output. 

At line level 1 I have 18W & no bars

At line level 2 I have 5 bars and 18W
output.

There is no adjustment to give me 1, 2, 3 or 4 bars.

I have tried setting the windows sound
settings at different values with no
success, this issue persists.

Any idears?

Thanks, 

Gary
KA1J


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Re: [Elecraft] new dead K3s still not fixed

[hbjr]

A K3 kit from Elecraft?

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of KD7PY
Sent: Wednesday, June 19, 2019 4:12 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] new dead K3s still not fixed

bought a new K3s Factory and a k3 kit, 1 month ago, the K3S was dead out of
the box, sent back to elecraft  for repair, came back ,worked for 30 minuits
and crashed.been working with support on the telephone. got the receiver
working but with a lot of glitches. 
the head of elecraft needs  to call me so we can find a solution for this.
send me another one that works.
  
ED Moss
KD7PY



--
Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] KIO3B USB Surge Suppressor

[hbjr]

Paul...
This is not exactly what you are describing, but it fails open.
https://hifimediy.com/usb-isolator

I've used one at a digipeater site and it took a static hit think - nearby
strike - it protected the TNC and PC.  It was open on every line.

I have used them for ground loops with sound cards.  5000v isolation
(advertised), but it did fail open!

Hank
K4HYJ

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Paul Christensen
Sent: Friday, June 28, 2019 12:37 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KIO3B USB Surge Suppressor

Looking for input from anyone who has successfully installed a
surge-suppression device on a USB port.  I am in the process of repairing a
KIO3B board after a recent thunderstorm.  

The KIO3B uses an ST Microelectronics USBLC6-2 ESD protection device at the
front end of the K3's USB connector.  The protection device is a SOT chip
that contains five low-capacitance diodes to clamp voltage to acceptable
limits.  

In this case, the diodes have shorted, causing the USB connector to show a
dead short to the PC's USB port, which causes an overload to the PC's USB
power bus.  This has caused all USB ports to disappear in Windows Device
Manager.  The short goes on until I can get to the remote site, sometimes
days or even weeks later.

Ideally, I would like to find a USB protection device that is designed to
fail open - open as in an open circuit into the USB driver that follows.
That way, I can still find a problem if Windows Device Manager doesn't show
a USB connection while not risking the destruction of the PC's USB power
bus.

Paul, W9AC
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Re: [Elecraft] KX3 wattage

[hbjr]

If I use a large power supply and turn the KX3 on its side and shake it - I
still only get 15 watts according to my Tird meter (Trusty ole Bird).

Hank

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Wayne Burdick
Sent: Saturday, June 29, 2019 4:15 PM
To: JP Douglas 
Cc: Elecraft Reflector 
Subject: Re: [Elecraft] KX3 wattage

Not.

Wayne


> On Jun 29, 2019, at 1:04 PM, JP Douglas  wrote:
> 
> Hi all!
> 
> While having a QSO yesterday from my mobile to a QRP station on 20 meters,
the gentleman I was chatting with mentioned that the KX3 now does up to 20
watts of power. Never heard this before and wondering if it's true,
currently my KX3 does up to 15 watts. I use my KX3 mostly for digital modes;
winlink and fldigi but do try voice w/it once in a while.
> 
> Thanks and 73 de Jose Douglas KB1TCD, Midcoast ME



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Re: [Elecraft] Digital modes on 144MHz only

[hbjr]

I was not happy with the 9700 - it had calibration issues.  I returned it.

I have the internal K144XV with the reflock board and 1PPM TXCO installed in
the K3S - the external reference clock for the K3S would be better.  So far
it has worked on the few digital modes I have tried.  I use an external
soundcard (PK-232sc+) because I like its specs and it also is a real TNC for
packet and pactor.  So far so good.  I'm only running a 200 watt amplifier.

Hank
K4HYJ

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Kjeld Holm
Sent: Thursday, July 4, 2019 2:31 PM
To: Elecraft Reflector 
Subject: [Elecraft] Digital modes on 144MHz only

Digital modes on 144MHz only

I plan for a second station to use for digital modes on 144MHz only. If you
look at performance only (no price, no ergonomics, no use outside digital
modes on 144MHz) what would you prefer

1)   K3/K3S with internal transverter
2)   IC-9700

In both cases I plan to use a 1kW amplifier. 

Vy 73 de OZ1CCM, Kjeld
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Re: [Elecraft] Follow up on "Digital modes on 144MHz only"

[hbjr]

I find running the fans helps some for extended operation.

Hank
K4HYJ

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Oliver Dröse
Sent: Friday, July 5, 2019 6:37 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Follow up on "Digital modes on 144MHz only"

Hi Kjeld,

I'm using the internal K144XV in one my K3s. It's very sensitive and stable 
(using the REFLOCK board, too), so no problem on that. BUT: the cooling design 
is just terrible! :-( It's all passive relying on the side plate of the 
transceiver to dissipate the heat. While this works ok-ish on SSB it's a 
nightmare on CW and especially digimodes! Heat does not get dissipated fast 
enough so the whole transverter heats up quite fast which results in a serious 
power drop, in my case from 10 watts down to about 5-6 watts! :-( That means 
instead of 1 kW output it's just
5-600 W after about 10 minutes of operation with my PA behind. :-(

I had a second K144XV and behaviour was the same. Same is true for a third one 
at a friend of mine so I assume this is a general design flaw. :-(

I can only second Conrad's, PA5Y, suggestion concerning the HA1YA transverter. 
Very good performance and reasonably priced compared to the Kuhne stuff (which 
is probably even a tad better). Using the PRO models myself on 4 & 2 m.

@Wayne:
If you're reading this please make sure the planned 144/430 MHz module in the 
K4 will work much better! Serious DX on VHF is almost all digital nowadays and 
the internal transverter needs to handle that ...

73, Olli - DH8BQA

Contest, DX & radio projects: https://www.dh8bqa.de/


Am 05.07.2019 um 20:34 schrieb Kjeld Holm:
> Thanks to all who replied to my mail (see below) but allow me to ask:
>
> Anyone using Elecraft XV144 or K144XV or HG 144-K for digital modes?
>
> Any comments on these being better or worse than other brands?
>
> Vy 73 de OZ1CCM, Kjeld
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net 
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Kjeld Holm
> Sent: 4. juli 2019 20:31
> To: Elecraft Reflector
> Subject: [Elecraft] Digital modes on 144MHz only
>
> Digital modes on 144MHz only
>
> I plan for a second station to use for digital modes on 144MHz only. 
> If you look at performance only (no price, no ergonomics, no use 
> outside digital modes on 144MHz) what would you prefer
>
> 1)   K3/K3S with internal transverter
> 2)   IC-9700
>
> In both cases I plan to use a 1kW amplifier.
>
> Vy 73 de OZ1CCM, Kjeld
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