Date   
Re: New to the KPA/KAT-500

Steve
 

Where to start.  One tip.  As the SteppIr is a resonant antenna, if you have it connected to one of the KAT500 ports, make sure that port is in bypass mode.  You don't need the tuner to tune a perfectly resonant antenna.  Sounds like a dynamite station.
WM6P

Re: Bluetooth adapter for ham use

Charlie T, k3ICH
 

Thanks to all for the input on my Bluetooth/hearing aid question.

Here's my results so far.

#1, For you Costco/Kirkland HA owners, I have not tried it with the radio yet, but

their "TV Connector" (??model #) interface works perfectly with the TV, easily

linking to my current Series 9 BTE style HA's.

Linking is the main question but since the device has both a TRS jack AND TOS-link

input, it should work fine with any radio's headphone output.

As soon as the TV is switched on, the TV sound comes through almost instantly.

The range is only about 20 feet, which is fine for me. The audio from the TV is fed

through a TOS-link splitter with the other output driving a surround sound processor.

There is a barely perceptible latency delay that is only noticeable if I hear both

the direct TV speaker output AND my HA's. The sound has an "echo" characteristic, but

if the speaker level is set for others in the room, then the HA audio is louder

which effectively eliminates the echo. This would obviously NOT be a problem

for ham use.

 

#2, I have tried a few other brand "TV adapters" ranging in price for $5 to $70,

and as yet, have been unsuccessful in getting them to link to my HA's.  As a further

experiment, I am going to buy a pair of cheap Bluetooth enabled headphones, to see if

my Kirkland HA's have some proprietary interface which is preventing the normal BT

link from occurring.

 

I'll report more as further experiments are performed.

 

73, Charlie k3ICH

 

 

 

 

Re: Ethernet A/B switch for P3 TX monitoring

Al N1AL
 

Yes I use something like that.  (Mine has 4 positions rather than 2.)

Alan N1AL

On 1/27/20 8:27 AM, HB via Groups.Io wrote:
Something like this?

https://www.amazon.com/CablesOnline-Rotary-Manual-Switch-SB-034/dp/B00EBSR7CQ?SubscriptionId=AKIAILSHYYTFIVPWUY6Q&tag=duckduckgo-ffsb-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B00EBSR7CQ

Hank
K4HYJ
K3S/P3
KX3

----- Original Message -----
------------------------------------------------------------------------
From: HB via Groups.Io (hbjr=optilink.us@groups.io <mailto:hbjr=optilink.us@groups.io>)
Date: 01/27/20 10:44
To: Elecraft-K3@groups.io <mailto:Elecraft-K3@groups.io>
Subject: [Elecraft-K3] Ethernet A/B switch for P3 TX monitoring


Hey gang....
I'm trying to grab any goodies left from Elecraft before they are gone for my K3S/P3 setup and I have bought the power/swr sampler for both HF and VHF.

They both work great BTW and mirror my trusty LP-100a.

I need a switch to switch between the 2 units.  Right now I reach behind the P3 and swap ethernet cables.  Any good switch ideas (brands/models) like a simple A/B switch that works well?

Thanks!
Hank
K4HYJ
K3S/P3
KX3


Re: Ethernet A/B switch for P3 TX monitoring

HB
 

----- Original Message -----

From: HB via Groups.Io (hbjr@...)
Date: 01/27/20 10:44
To: Elecraft-K3@groups.io
Subject: [Elecraft-K3] Ethernet A/B switch for P3 TX monitoring


Hey gang....
I'm trying to grab any goodies left from Elecraft before they are gone for my K3S/P3 setup and I have bought the power/swr sampler for both HF and VHF.

They both work great BTW and mirror my trusty LP-100a.  

I need a switch to switch between the 2 units.  Right now I reach behind the P3 and swap ethernet cables.  Any good switch ideas (brands/models) like a simple A/B switch that works well?

Thanks!
Hank
K4HYJ
K3S/P3
KX3


Ethernet A/B switch for P3 TX monitoring

HB
 


Hey gang....
I'm trying to grab any goodies left from Elecraft before they are gone for my K3S/P3 setup and I have bought the power/swr sampler for both HF and VHF.

They both work great BTW and mirror my trusty LP-100a.  

I need a switch to switch between the 2 units.  Right now I reach behind the P3 and swap ethernet cables.  Any good switch ideas (brands/models) like a simple A/B switch that works well?

Thanks!
Hank
K4HYJ
K3S/P3
KX3


Re: New to the KPA/KAT-500

Michael Foerster
 
Edited

Paul,

page 20 of the KPA500 manual shows how to connect up the amp and tuner.
  You do need the right cables as designated in the table.

the DIN cable picks up the PTT line on the 7300 and the analog band voltage so the amp knows which band the radio is on.  It looks like Elecraft does sell the cable From the 13 pin DIN connector so you would have to build one for the band switching.

The 4 pin flat white connector carries the Tune indication to the tuner, along with the power.  

I don't have the combination, but I have been working on a similar set up for a friend with a flex radio, and I’m familiar with the 7300.

Mike, W0IH

Re: New to the KPA/KAT-500

John Canfield
 
Edited

I just bought a KPA1500 (yippee!) and was concerned about getting my Green Heron RT-21 rotator controller, the SteppIR SDA 2000 optimizer, the KPA1500 amp connected to my K3s, my Kenwood TS-590s and the PC. Bob Wilson, N6TV sells an "Y Box" and an "S Box" to interconnect station equipment. I gave him my requirements and he designed my specific connectivity for his Serial Box complete with a schematic, what kind of cable and even how to option the equipment. Apparently he builds some to order since he won't ship mine for a month.

Edit: Bob made a typo about the ship date for my S-Box, he meant a ship date of Jan 28 and not Feb 28!

John - WB5THT

K3 KANT3 Board

Paul wyse
 

Need a KANT3 board to do some testing of K3 with a bad KAT3 module

Paul, W4PFM

New to the KPA/KAT-500

Paul
 

With a newly acquired KPA/KAT 500 (along with a K4HD somewhere in the que), an existing Icom-7600, a SteppIR DB-18, a goodly pile of connection cables, and 5 operating manuals (Elecraft x2, Frad Cady’s book, Icom, Steppir), I’m left a bit bewildered on the many ways to connect the equipment together.

 

Does anyone have any experiences with this setup that they care to share? I see how I can easily do a basic setup, but I’d really like to get it a bit more idiot-proof (that’s me at times. Hi).

 

Thanks in advance for your collective wisdom.

 

73s,

 

Paul Braiman, W2PIR


 . . . .
 . . . .  “Dare Mighty Things"
 . . . .     -Jet Propulsion Laboratory
 . . . .

 

Re: Alternative for K3 TCXO?

Larry
 

That looks pretty nice.  Have you had any feedback from anyone trying these out? 

What applications were they using these with?

Would they be usable as a replacement for a defunct Xtal oscillator in a receiver?


Larry

W0OGH


Re: Elecraft K3 / 100 with universal serial bus adapter (faulty)

Donn Drury
 

WTB K3(0) Mini

David Perry
 

I would like to buy a K3(0) Mini with power supply if available.  Please contact me off list if you have one in good condition.

73,

Dave, N4QS

Re: Message Bounces

David Ferrington, M0XDF
 

Well he appears to be the only one with a problem, and now we can’t help sort it out for him ☹️

-73 de M0XDF

On 22 Jan 2020, at 12:02, Michael Harris via Groups.Io <mike.harris=horizon.co.fk@groups.io> wrote:

Good day,

Someone/domain feeding this list is causing an issue with email security handshaking. This apparently makes groups.io see this as a bounce.

Consequently groups.io suspends my list accounts.

I subscribe to a small number of lists hosted by groups.io and Elecraft-K3 is the only one bouncing. To avoid continuing bounce messages and account suspension I'm unsubscribing.

It's been interesting but 73 to all.

Mike VP8NO


Message Bounces

Michael Harris <mike.harris@...>
 

Good day,

Someone/domain feeding this list is causing an issue with email security handshaking. This apparently makes groups.io see this as a bounce.

Consequently groups.io suspends my list accounts.

I subscribe to a small number of lists hosted by groups.io and Elecraft-K3 is the only one bouncing. To avoid continuing bounce messages and account suspension I'm unsubscribing.

It's been interesting but 73 to all.

Mike VP8NO

Re: CW Noise Pedestal

wb6bee
 

Clay, that is correct  Across the poles of the left fan from the rear.    I just completed the modification on  my back up K3.   Took 20 minutes start to finish.

Don
WB6BEE

Elecraft QSO Party---It is on the list to be removed from N1MM Logger

Jim Shepherd
 

I saw this on the N1MM group and saw that it was scheduled for removal due to inactivity.  Is there still a "Elecraft QSO Party" in existence or is this contest just history?  If it is still active, the sponsor needs to contact the folks at N1MM and Bruce WA7BNM (Contest Calendar)...  This is not a call for everyone to contact these folks, it is only for the sponsor who is hopefully reading this list. 

Thanks,  Jim W6US

Re: CW Noise Pedestal

Clay Autery
 

My bad....  I looked at the picture more closely in the Mod instructions....  <blush>

The cap is clearly across the B+ and GND terminals for fan #1 (left fand as you look from the rear).  Don't know how I "saw" it different...  Doh... I apologize for any confusion I may have caused.


______________________
Clay Autery, KY5G
(318) 518-1389
On 01/21/20 00:10, Rob Sherwood wrote:

My IC-781 cooling kit used 470uF from the fan B+ to ground.  I haven’t seen the Elecraft schematic.   Rob, NC0B

 

From: Elecraft-K3@groups.io [mailto:Elecraft-K3@groups.io] On Behalf Of Clay Autery
Sent: Monday, January 20, 2020 10:29 PM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] CW Noise Pedestal

 

Right...  I have just never seen a bypass connected between to + terminals...  normally you see the pos term bypassed to ground...
This one LOOKS to this uneducated hacker like it is intended to "balance" the two fan circuits... And 470 uF seems a bit large for a bypass cap anyway...  I'm used to seeing much smaller ones...  even if there are several stacked values, they usually aren't anywhere near that large a value.

73,

______________________
Clay Autery, KY5G
(318) 518-1389

On 01/20/20 14:36, W2XJ wrote:

it’s just a DC bypass across the fans. Any properly rated ‘letic will get the job done.



On Jan 20, 2020, at 1:34 PM, Clay Autery <KY5G@...> wrote:



Replying to my own post... sorry....

I don't think I will personally just throw any old 470uF 16V electrolytic capacitor in there.  I think I will dig into the schematics a bit and try to figure out for what the cap is being introduced into the circuit.
Bulk, smoothing, response?  Other?

For instance, in audio applications, folks congregate around Elna SILMIC II series electrolytics for "smoothing"purposes...
I don't pretend to know ANYTHING about this, but it is an opportunity to learn.

73,

______________________
Clay Autery, KY5G
(318) 518-1389

On 01/20/20 12:23, Clay Autery wrote:

HERE is the Introduction to the Mod Alert:

Elecraft      •      www.elecraft.com     •     831-763-4211Elecraft KPAIO3MDKT

Installation Instructions
Revision B, August 10, 2016E740287Copyright © 2016, Elecraft, Inc.All Rights Reserved

Introduction

This modification applies only to K3S transceivers equipped with the KPA3A 100 watt power amplifier, serial numbers 10732 (factory assembled), 10728 (kits) or below, and to all K3 transceivers with the KPA3 power amplifier that have been upgraded with KSYN3A synthesizers.Tests at Elecraft have shown that a very small amount of electrical noise associated with the fans on the KPA3 (or KPA3A) amplifier module can be detected in the transmitted signal under laboratory test conditions. This modification suppresses that noise. The noise had always been present, but was only discovered with the addition of the new KSYN3A synthesizer, due to its extremely low phase noise close to the carrier. This modification was phased into factory assembled units starting with serial number 10732 and kits starting with serial number 10728. This modification kit allows you to make the simple change in the field to an existing K3 or K3S. It requires removing the KPAIO3 interface board and soldering a leaded capacitor supplied onto the board.

https://ftp.elecraft.com/K3/Manuals%20Downloads/E740287%20KPAIO3MDKT%20Instructions.pdf

YOU need the mod if the "small amount of noise" present under "lab conditions" bothers you.
I am applying it because I do everything reasonable to make my transmissions cleaner.  It is a matter of being a "good neighbor" on the public airways for me.

73,

______________________
Clay Autery, KY5G
(318) 518-1389

On 01/20/20 11:43, Russ Tobolic via Groups.Io wrote:

Now I am all confused!  I have good old trusty K3 serial #732 with the original KPA3 and upgraded with the KSYN3A.  This is the first time I have heard of this mod so do I need it? No one has told me I have a problem.   I have a handful of the 470uF caps in my junk box.

Russ, N3CO

Re: CW Noise Pedestal

Rob Sherwood
 

My IC-781 cooling kit used 470uF from the fan B+ to ground.  I haven’t seen the Elecraft schematic.   Rob, NC0B

 

From: Elecraft-K3@groups.io [mailto:Elecraft-K3@groups.io] On Behalf Of Clay Autery
Sent: Monday, January 20, 2020 10:29 PM
To: Elecraft-K3@groups.io
Subject: Re: [Elecraft-K3] CW Noise Pedestal

 

Right...  I have just never seen a bypass connected between to + terminals...  normally you see the pos term bypassed to ground...
This one LOOKS to this uneducated hacker like it is intended to "balance" the two fan circuits... And 470 uF seems a bit large for a bypass cap anyway...  I'm used to seeing much smaller ones...  even if there are several stacked values, they usually aren't anywhere near that large a value.

73,

______________________
Clay Autery, KY5G
(318) 518-1389

On 01/20/20 14:36, W2XJ wrote:

it’s just a DC bypass across the fans. Any properly rated ‘letic will get the job done.



On Jan 20, 2020, at 1:34 PM, Clay Autery <KY5G@...> wrote:



Replying to my own post... sorry....

I don't think I will personally just throw any old 470uF 16V electrolytic capacitor in there.  I think I will dig into the schematics a bit and try to figure out for what the cap is being introduced into the circuit.
Bulk, smoothing, response?  Other?

For instance, in audio applications, folks congregate around Elna SILMIC II series electrolytics for "smoothing"purposes...
I don't pretend to know ANYTHING about this, but it is an opportunity to learn.

73,

______________________
Clay Autery, KY5G
(318) 518-1389

On 01/20/20 12:23, Clay Autery wrote:

HERE is the Introduction to the Mod Alert:

Elecraft      •      www.elecraft.com     •     831-763-4211Elecraft KPAIO3MDKT

Installation Instructions
Revision B, August 10, 2016E740287Copyright © 2016, Elecraft, Inc.All Rights Reserved

Introduction

This modification applies only to K3S transceivers equipped with the KPA3A 100 watt power amplifier, serial numbers 10732 (factory assembled), 10728 (kits) or below, and to all K3 transceivers with the KPA3 power amplifier that have been upgraded with KSYN3A synthesizers.Tests at Elecraft have shown that a very small amount of electrical noise associated with the fans on the KPA3 (or KPA3A) amplifier module can be detected in the transmitted signal under laboratory test conditions. This modification suppresses that noise. The noise had always been present, but was only discovered with the addition of the new KSYN3A synthesizer, due to its extremely low phase noise close to the carrier. This modification was phased into factory assembled units starting with serial number 10732 and kits starting with serial number 10728. This modification kit allows you to make the simple change in the field to an existing K3 or K3S. It requires removing the KPAIO3 interface board and soldering a leaded capacitor supplied onto the board.

https://ftp.elecraft.com/K3/Manuals%20Downloads/E740287%20KPAIO3MDKT%20Instructions.pdf

YOU need the mod if the "small amount of noise" present under "lab conditions" bothers you.
I am applying it because I do everything reasonable to make my transmissions cleaner.  It is a matter of being a "good neighbor" on the public airways for me.

73,

______________________
Clay Autery, KY5G
(318) 518-1389

On 01/20/20 11:43, Russ Tobolic via Groups.Io wrote:

Now I am all confused!  I have good old trusty K3 serial #732 with the original KPA3 and upgraded with the KSYN3A.  This is the first time I have heard of this mod so do I need it? No one has told me I have a problem.   I have a handful of the 470uF caps in my junk box.

Russ, N3CO

Re: CW Noise Pedestal

Clay Autery
 

Right...  I have just never seen a bypass connected between to + terminals...  normally you see the pos term bypassed to ground...
This one LOOKS to this uneducated hacker like it is intended to "balance" the two fan circuits... And 470 uF seems a bit large for a bypass cap anyway...  I'm used to seeing much smaller ones...  even if there are several stacked values, they usually aren't anywhere near that large a value.

73,

______________________
Clay Autery, KY5G
(318) 518-1389
On 01/20/20 14:36, W2XJ wrote:

it’s just a DC bypass across the fans. Any properly rated ‘letic will get the job done.


On Jan 20, 2020, at 1:34 PM, Clay Autery <KY5G@...> wrote:



Replying to my own post... sorry....

I don't think I will personally just throw any old 470uF 16V electrolytic capacitor in there.  I think I will dig into the schematics a bit and try to figure out for what the cap is being introduced into the circuit.
Bulk, smoothing, response?  Other?

For instance, in audio applications, folks congregate around Elna SILMIC II series electrolytics for "smoothing"purposes...
I don't pretend to know ANYTHING about this, but it is an opportunity to learn.

73,

______________________
Clay Autery, KY5G
(318) 518-1389
On 01/20/20 12:23, Clay Autery wrote:

HERE is the Introduction to the Mod Alert:

Elecraft      •      www.elecraft.com     •     831-763-4211Elecraft KPAIO3MDKT

Installation Instructions
Revision B, August 10, 2016E740287Copyright © 2016, Elecraft, Inc.All Rights Reserved

Introduction

This modification applies only to K3S transceivers equipped with the KPA3A 100 watt power amplifier, serial numbers 10732 (factory assembled), 10728 (kits) or below, and to all K3 transceivers with the KPA3 power amplifier that have been upgraded with KSYN3A synthesizers.Tests at Elecraft have shown that a very small amount of electrical noise associated with the fans on the KPA3 (or KPA3A) amplifier module can be detected in the transmitted signal under laboratory test conditions. This modification suppresses that noise. The noise had always been present, but was only discovered with the addition of the new KSYN3A synthesizer, due to its extremely low phase noise close to the carrier. This modification was phased into factory assembled units starting with serial number 10732 and kits starting with serial number 10728. This modification kit allows you to make the simple change in the field to an existing K3 or K3S. It requires removing the KPAIO3 interface board and soldering a leaded capacitor supplied onto the board.

https://ftp.elecraft.com/K3/Manuals%20Downloads/E740287%20KPAIO3MDKT%20Instructions.pdf

YOU need the mod if the "small amount of noise" present under "lab conditions" bothers you.
I am applying it because I do everything reasonable to make my transmissions cleaner.  It is a matter of being a "good neighbor" on the public airways for me.

73,

______________________
Clay Autery, KY5G
(318) 518-1389
On 01/20/20 11:43, Russ Tobolic via Groups.Io wrote:
Now I am all confused!  I have good old trusty K3 serial #732 with the original KPA3 and upgraded with the KSYN3A.  This is the first time I have heard of this mod so do I need it? No one has told me I have a problem.   I have a handful of the 470uF caps in my junk box.

Russ, N3CO

Re: CW Noise Pedestal

W2XJ
 

it’s just a DC bypass across the fans. Any properly rated ‘letic will get the job done.


On Jan 20, 2020, at 1:34 PM, Clay Autery <KY5G@...> wrote:



Replying to my own post... sorry....

I don't think I will personally just throw any old 470uF 16V electrolytic capacitor in there.  I think I will dig into the schematics a bit and try to figure out for what the cap is being introduced into the circuit.
Bulk, smoothing, response?  Other?

For instance, in audio applications, folks congregate around Elna SILMIC II series electrolytics for "smoothing"purposes...
I don't pretend to know ANYTHING about this, but it is an opportunity to learn.

73,

______________________
Clay Autery, KY5G
(318) 518-1389
On 01/20/20 12:23, Clay Autery wrote:

HERE is the Introduction to the Mod Alert:

Elecraft      •      www.elecraft.com     •     831-763-4211Elecraft KPAIO3MDKT

Installation Instructions
Revision B, August 10, 2016E740287Copyright © 2016, Elecraft, Inc.All Rights Reserved

Introduction

This modification applies only to K3S transceivers equipped with the KPA3A 100 watt power amplifier, serial numbers 10732 (factory assembled), 10728 (kits) or below, and to all K3 transceivers with the KPA3 power amplifier that have been upgraded with KSYN3A synthesizers.Tests at Elecraft have shown that a very small amount of electrical noise associated with the fans on the KPA3 (or KPA3A) amplifier module can be detected in the transmitted signal under laboratory test conditions. This modification suppresses that noise. The noise had always been present, but was only discovered with the addition of the new KSYN3A synthesizer, due to its extremely low phase noise close to the carrier. This modification was phased into factory assembled units starting with serial number 10732 and kits starting with serial number 10728. This modification kit allows you to make the simple change in the field to an existing K3 or K3S. It requires removing the KPAIO3 interface board and soldering a leaded capacitor supplied onto the board.

https://ftp.elecraft.com/K3/Manuals%20Downloads/E740287%20KPAIO3MDKT%20Instructions.pdf

YOU need the mod if the "small amount of noise" present under "lab conditions" bothers you.
I am applying it because I do everything reasonable to make my transmissions cleaner.  It is a matter of being a "good neighbor" on the public airways for me.

73,

______________________
Clay Autery, KY5G
(318) 518-1389
On 01/20/20 11:43, Russ Tobolic via Groups.Io wrote:
Now I am all confused!  I have good old trusty K3 serial #732 with the original KPA3 and upgraded with the KSYN3A.  This is the first time I have heard of this mod so do I need it? No one has told me I have a problem.   I have a handful of the 470uF caps in my junk box.

Russ, N3CO