Re: [Elecraft] K2 issue or is it?

[Mike K8CN]

Barry, can you provide more detail about the K2 settings when you hear the
snapping sounds?
  
For example, does this effect occur only in CW mode, or in USB and LSB modes
as well? 

For which filter settings does it occur (both CW and SSB filter settings)?

Is your AGC turned ON or OFF?

Does the snapping subside if the RF (actually IF) gain is backed off?

Does the snapping subside if the AF gain is backed off?

Does this phenomenon occur on all bands or just a few bands?

Don, W3FPR, will likely have a few possible causes immediately in mind after
repairing hundreds of K2 radios over the years!

73,
Mike, K8CN




--
Sent from: http://elecraft.365791.n2.nabble.com/
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] K-POD Issues, But I Love It!

[w4sc]

Seems putting the mode change first in the string would change the mode in the 
current operating band; then change bands……..

Ben W4SC 

Sent from Mail for Windows 10

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] K-POD Issues, But I Love It!

[hawley, charles j jr]

Thank you. That’s likely another good answer. I got a couple direct emails and 
the one I tried first was to put the mode in the macro string first. That seems 
to work with many tries, no mishaps. So that’s where I left it.
Thanks for the reply,

Jack BMW Motorcycles
Chuck KE9UW
c-haw...@illinois.edu

Sent from my iPad

> On Sep 16, 2020, at 6:36 PM, w4sc  wrote:
> 
> A possible solution:
> 
> 1) FA705;DE100;MD3;
> 
> Check DExxx command in programmers manual.
> 
> 73 de Ben W4SC
> 
> Sent from Mail for Windows 10
> 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to c-haw...@illinois.edu 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] K-POD Issues, But I Love It!

[w4sc]

A possible solution:

1) FA705;DE100;MD3;

Check DExxx command in programmers manual.

73 de Ben W4SC

Sent from Mail for Windows 10

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] K-POD Issues, But I Love It!

[hawley, charles j jr]

Another small issue I have had is when I am on say 3710 KHz LSB
and send the macro FA705;MD3;
the K3s goes to 7049.280 KHz CW sometimes. (720 Hz is my offset for CW)
If I send FA705;MD3; again right away
it goes to 7050 KHz CW

Then when I send FA371;MD1;
the K3s goes to 3710.720 KHz LSB sometimes
Again, if I send FA371;MD1; again right away
the K3s goes to 3710 KHz LSB.

This has always been the case and has nothing to do with the wrong macro being 
sent...
am I not allowing for something in my macros?

Chuck Hawley
 c-haw...@illinois.edu

 Amateur Radio, KE9UW



From: Charles J. Hawley 
Sent: Wednesday, September 16, 2020 12:30 PM
To: elecraft@mailman.qth.net 
Subject: K-POD Issues, But I Love It!

I love this K-Pod, BUT I’ve sort of worn out 3 of them. The symptom is that the 
most used buttons get noisy and trigger another macro from another address. 
When I had the first one do that, I did extensive testing to eliminate rf 
noise, etc.
And a new unit however proved to work perfectly...for about 4 months. When it 
started doing the same thing Elecraft said it was highly unlikely and 
especially twice to the same guy, but they sent me another one anyway. Great 
company!
Now that one after a year is doing it again. I rearranged the macros to 
different buttons of the two macros I mostly use, and it works flawlessly again 
for those two. I doubt that Elecraft will keep sending me these things, maybe 
I’m missing something. But all I can come up with is noisy switches, double 
triggering. Anybody have similar issues?

Jack BMW Motorcycles
Chuck KE9UW
c-haw...@illinois.edu

Sent from my iPad
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

[Elecraft] Status of Add-ons for K3?

[N4ZR]

I ordered the internal sound card etc. KIO3BUPDT in May, but the last I 
heard you were trying to gauge demand before deciding whether to 
continue providing this and other add-ins.  The web site lists the 
boards with prices and a shopping cart if you search for KIO3BUPDT, but 
if you follow the links there are no prices.


What's the current status?

--
73, Pete N4ZR
Check out the Reverse Beacon Network
at , now
spotting RTTY activity worldwide.
For spots, please use your favorite
"retail" DX cluster.

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] 2M internal Xverter now 3.5 kc lower

[Hank via Elecraft]

I have had the same problem - It depends where the crystal ends up frequency 
wise.  Turn the tech menu on and go to the ref menu item and see what frequency 
is there.  If the last 3 digits are well below 500, then the 2 meter offset 
will be very noticeable.

Keith from Elecraft had responded about the issue if you want to try and search 
on nabble.

The TXCO could be off or the synthesizer board in the K3s could be causing 
issues.  They ended up replacing the TXCO in mine.

Hank
K4HYJ


- Original Message -
From: Randy Diddel (k5rhd...@gmail.com)
Date: 09/16/20 11:25
To: John Stengrevics (jstengrev...@comcast.net)
Cc: elecraft (elecraft@mailman.qth.net)
Subject: Re: [Elecraft] 2M internal Xverter now 3.5 kc lower

Hi John,

I have two emails in to support, one for this issue and another for something 
else. Both have gone unanswered. I have also left voicemail for support as well.

I am guessing that they are way behind on orders (have an order in for the 
10mHZ RefLock too) and support requests due to the lockdown.

Hopefully, it is an easy fix.

/randy

> On Sep 16, 2020, at 8:54 AM, John Stengrevics  
> wrote:
>
> Hi Randy,
>
> I have a similar problem, but only 800Hz low.
>
> The solution was beyond my capabilities. So, I have ordered a K4 and will 
> have it fixed by Elecraft before I sell my K3S.
>
> Unfortunately, I deleted the email from tech support.  I would suggest you 
> call Elecraft and try to be connected to tech support if you want to give it 
> a try.
>
> 73,
>
> John
> WA1EAZ
>
>
>
>> On Sep 16, 2020, at 10:13 AM, Randy Diddel  wrote:
>>
>> Hi group,
>>
>> I have submitted to support requests in the last week to Elecraft directly 
>> with no response so I will try here:
>>
>> This summer, I recently bought the K144XV and the Reference lock board for 
>> it. The past two mornings I have experienced a drop in RX frequency by 
>> 3.5kc.  I check into a Net on 144.200. I checked in and after about 20 
>> minutes the net disappeared!  I could hear it down a little and tuned to 
>> 144.196.50 and picked it back up again. I asked the net control if it had 
>> moved and they were all claiming to still be on 144.200! The XVerter is less 
>> than 3 months old.
>>
>> Any ideas?
>>
>> 73
>>
>> K5RHD
>>
>> /randy
>>
>>
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to jstengrev...@comcast.net
>

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to h...@optilink.us

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] 2M internal Xverter now 3.5 kc lower

[John Stengrevics]

I have the high stability reference oscillator and External RefLock.  External 
oscillator in use and am 800 Hz low.

The directions I received from tech support required exposing a capacitor on 
the RefLock board and adjusting it.  Beyond my capabilities.

73,

John
WA1EAZ

> On Sep 16, 2020, at 10:47 AM, Randy Diddel  wrote:
> 
> Hi Ben,
> 
> I bought the K3s used and I am really not sure which TXCO I have. It is a 
> fairly loaded on so maybe-when I crack the case of the 10mHz RefLock module I 
> ordered last week, I will verify what I have. I have the 10mHz reflect module 
> on order as of last week but I have yet to hear anything about it shipping 
> from Elecraft.
> 
> The radio has been on all night sitting at 144.965.50 and the net was right 
> there this morning. I followed the instructions for installation of the 
> XVerter and the ref-lock and for over a month, the setup was working fine. 
> This just started Monday.
> 
> 73
> 
> K5RHD
> 
> /randy
> 
> 
> 
>> On Sep 16, 2020, at 8:41 AM, w4sc  wrote:
>> 
>> Randy,
>> 
>> I would be interested to know:
>> 
>> Do you have the high stability 49.380 MHz reference oscillator installed?
>> Do you have the 10 MHz RefLock option installed and enabled?
>> 
>> I see you have the 144MHz RefLock installed.  There is quite a procedure to 
>> install and enable this option.
>> 
>> I suggest as a test, power your radio on at least an hour before net. 
>> Movement of 3.5 KHz  is a lot.
>> 
>> I currently have my K3S at Elecraft for updating and installation of the 
>> KXV144 2 meter option and the 144MHz reflock.
>> 
>> 73 de Ben W4SC
>> 
>> Sent from Mail  for Windows 
>> 10
> 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to jstengrev...@comcast.net 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] FS W2 Wattmeter HF + VHF/UHF couplers [updated]

[Cliff Frescura]

The DCV/U-200 has been sold.  W2 with HF coupler still available.

Thanks,

Cliff K3LL/6

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Cliff
Frescura
Sent: Wednesday, September 16, 2020 8:47 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] FS W2 Wattmeter HF + VHF/UHF couplers

I have for sale:

1. W2 wattmeter with DCHF-2000 1.8 - 54 MHz 2KW coupler, coupler cable, and 
power cable
(power pole end).  Modified to turn on when power is applied: $285 
2. DCV/U-200 144 MHz - 450 MHz 200W coupler with coupler cable (coupler only): 
$90

W2 with both couplers : $350

Pictures available upon request.

ConUS shipping included via USPS Priority mail.  Payment via PayPal or Zelle.  
No returns.

Please reply off list.

73,

Cliff K3LL/6



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to c...@cfcorp.com 




__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] Why predistortion ?

[Lyn Norstad]

Hmmm ... if my math still works ...

2020 - 1965 = 55 (years)

Mark me down as a "Not quite as old fart as Jim."

73
Lyn, W0LEN


-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Art Peters
Sent: Wednesday, September 16, 2020 5:27 AM
To: j...@audiosystemsgroup.com
Cc: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] Why predistortion ?

H, my EE degree is only 37 years old and the term also seems clear and 
descriptive to me too hmmm wonder if that also makes me an old fart???

73 es God. bless,

Art/K0ACP 

Sent from my iPad

> On Sep 15, 2020, at 8:24 PM, Jim Brown  wrote:
> 
> On 9/15/2020 3:55 PM, Andy Durbin wrote:
>> Who ever coined the term "predistortion" should be taken behind the bicycle 
>> shed and introduced to a 2x4.  The terminology is the epitome of obfuscation!
> 
> Hmmm. My EE degree is 56 years old, but the term seems quite clear and 
> descriptive to an old fart like me!
> 
> It's been done in audio systems for at least four decades, where it uses 
> motional feedback from the loudspeakers to which the systems were carefully 
> matched. The implementation was intended to correct for non-linearities in 
> the loudspeakers, which are far greater than in the electronics.
> 
> 73, Jim K9YC
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to k0...@k0acp.com 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to l...@lnainc.com 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

[Elecraft] FS W2 Wattmeter HF + VHF/UHF couplers

[Cliff Frescura]

I have for sale:

1. W2 wattmeter with DCHF-2000 1.8 - 54 MHz 2KW coupler, coupler cable, and 
power cable
(power pole end).  Modified to turn on when power is applied: $285 
2. DCV/U-200 144 MHz - 450 MHz 200W coupler with coupler cable (coupler only): 
$90

W2 with both couplers : $350

Pictures available upon request.

ConUS shipping included via USPS Priority mail.  Payment via PayPal or Zelle.  
No returns.

Please reply off list.

73,

Cliff K3LL/6



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] 2M internal Xverter now 3.5 kc lower

[Randy Diddel]

Hi John,

I have two emails in to support, one for this issue and another for something 
else. Both have gone unanswered. I have also left voicemail for support as 
well. 

I am guessing that they are way behind on orders (have an order in for the 
10mHZ RefLock too) and support requests due to the lockdown.

Hopefully, it is an easy fix.

/randy

> On Sep 16, 2020, at 8:54 AM, John Stengrevics  
> wrote:
> 
> Hi Randy,
> 
> I have a similar problem, but only 800Hz low.
> 
> The solution was beyond my capabilities. So, I have ordered a K4 and will 
> have it fixed by Elecraft before I sell my K3S.
> 
> Unfortunately, I deleted the email from tech support.  I would suggest you 
> call Elecraft and try to be connected to tech support if you want to give it 
> a try.
> 
> 73,
> 
> John
> WA1EAZ
> 
> 
> 
>> On Sep 16, 2020, at 10:13 AM, Randy Diddel  wrote:
>> 
>> Hi group,
>> 
>> I have submitted to support requests in the last week to Elecraft directly 
>> with no response so I will try here:
>> 
>> This summer, I recently bought the K144XV and the Reference lock board for 
>> it. The past two mornings I have experienced a drop in RX frequency by 
>> 3.5kc.  I check into a Net on 144.200. I checked in and after about 20 
>> minutes the net disappeared!  I could hear it down a little and tuned to 
>> 144.196.50 and picked it back up again. I asked the net control if it had 
>> moved and they were all claiming to still be on 144.200! The XVerter is less 
>> than 3 months old.
>> 
>> Any ideas?
>> 
>> 73
>> 
>> K5RHD
>> 
>> /randy
>> 
>> 
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to jstengrev...@comcast.net 
> 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] 2M internal Xverter now 3.5 kc lower

[Randy Diddel]

Hi Ben,

I bought the K3s used and I am really not sure which TXCO I have. It is a 
fairly loaded on so maybe-when I crack the case of the 10mHz RefLock module I 
ordered last week, I will verify what I have. I have the 10mHz reflect module 
on order as of last week but I have yet to hear anything about it shipping from 
Elecraft.

The radio has been on all night sitting at 144.965.50 and the net was right 
there this morning. I followed the instructions for installation of the XVerter 
and the ref-lock and for over a month, the setup was working fine. This just 
started Monday.

73

K5RHD

/randy



> On Sep 16, 2020, at 8:41 AM, w4sc  wrote:
> 
> Randy,
>  
> I would be interested to know:
>  
> Do you have the high stability 49.380 MHz reference oscillator installed?
> Do you have the 10 MHz RefLock option installed and enabled?
>  
> I see you have the 144MHz RefLock installed.  There is quite a procedure to 
> install and enable this option.
>  
> I suggest as a test, power your radio on at least an hour before net. 
> Movement of 3.5 KHz  is a lot.
>  
> I currently have my K3S at Elecraft for updating and installation of the 
> KXV144 2 meter option and the 144MHz reflock.
>  
> 73 de Ben W4SC
>  
> Sent from Mail  for Windows 10

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

[Elecraft] 2M internal Xverter now 3.5 kc lower

[Randy Diddel]

Hi group,

I have submitted to support requests in the last week to Elecraft directly with 
no response so I will try here:

This summer, I recently bought the K144XV and the Reference lock board for it. 
The past two mornings I have experienced a drop in RX frequency by 3.5kc.  I 
check into a Net on 144.200. I checked in and after about 20 minutes the net 
disappeared!  I could hear it down a little and tuned to 144.196.50 and picked 
it back up again. I asked the net control if it had moved and they were all 
claiming to still be on 144.200! The XVerter is less than 3 months old.

Any ideas?

73

K5RHD

/randy


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] KPA-1500/FlexRadio 6400

[Dave]

Let me rephrase. 

It needs frequency CAT data if you do not want to transmit into a high SWR or 
wrong band filters, even for a few milliseconds. 

I would rather have my station preset the amp to the proper band filters and 
tuner L & C before transmitting ANY RF into it. 

This way if I see something on another band or frequency ai want to work ai QSY 
and call CQ. 

If CAT is available I would much rather use it than depend on RF detection.  I 
have had the three watt resistor on the KPA1500 heat up and fall off the board 
rendering the internal frequency counter useless. It took out one of the LDMOS 
devices. 

Dave wo2x


Sent from my waxed string and tin cans. 

> On Sep 16, 2020, at 12:58 AM, Jim Brown  wrote:
> 
> On 9/15/2020 7:19 PM, Dave wrote:
>> Actually the KPA1500 needs frequency tracking for the internal antenna tuner.
> 
> NO, it does not. See my previous post.
> 
> 73, Jim K9YC
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to rocke...@gmail.com 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

Re: [Elecraft] Why predistortion ?

[Art Peters]

H, my EE degree is only 37 years old and the term also seems clear and 
descriptive to me too hmmm wonder if that also makes me an old fart???

73 es God. bless,

Art/K0ACP 

Sent from my iPad

> On Sep 15, 2020, at 8:24 PM, Jim Brown  wrote:
> 
> On 9/15/2020 3:55 PM, Andy Durbin wrote:
>> Who ever coined the term "predistortion" should be taken behind the bicycle 
>> shed and introduced to a 2x4.  The terminology is the epitome of obfuscation!
> 
> Hmmm. My EE degree is 56 years old, but the term seems quite clear and 
> descriptive to an old fart like me!
> 
> It's been done in audio systems for at least four decades, where it uses 
> motional feedback from the loudspeakers to which the systems were carefully 
> matched. The implementation was intended to correct for non-linearities in 
> the loudspeakers, which are far greater than in the electronics.
> 
> 73, Jim K9YC
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to k0...@k0acp.com 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

[Elecraft] Priset for Elecraft K3S-100

[Samir Popaja]

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com