Re: [Elecraft] KIO3 failure mode

[Geert Jan de Groot]

Many faults occur via the station ground system.? This fault indicated a
difference in potential between the station ground and the AC Mains
ground.? In many cases, the station equipment is connected between
station ground and the AC Mains ground.?? 


I think we're seeing monthly reports of KIO3 ports being blown up by 
having it connected to a PC and creating a ground loop. I wonder why 
this keeps happening over and over.


The proper solution is to have an entry panel through which EVERYTHING 
is grounded and connected together. There have been a fair number of 
publications on this over the years.


I do wonder though, if a full galvanic isolator would also help? It 
won't replace the ground panel, but having heard the stories (followed 
by "I need the KIO3 repaired and can't get parts / Elecraft repair is 
backed up") I wonder about this measure.


How such an isolator box is powered would be another matter though. But 
I wonder who tried this?


73, Geert Jan PE1HZG

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Re: [Elecraft] KIO3 Main Board Anyone need?

[Josep via Elecraft]

I have a K3 and wonder if this board will work in my rig. If so, I will be 
interested.


73,
JosepEA6BFBUG #256  -  CWops #3072  -  FOC #2182 (ex 1724)


On Thursday, July 7, 2022, 15:33, Don Greenbaum  wrote:

When I bought a PR6 I needed to replace the KIO3 Main board with a 
KIO3A.  If this is a spare part people need please contact me.

Don
N1DG
Duxbury, MA 02332

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Re: [Elecraft] KIO3

[lashap]

I could use a KIO3 also.
Tnx
Larry k6ro

www.LSRarecoins.com
www.k6ro.com
310-710-2869

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of n3ua
Sent: Tuesday, June 01, 2021 3:48 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KIO3

I need a KIO3 board to repair a K3. If anybody upgraded K3 to the K3S
should have an extra. Please make me an offer for your used KIO3. 

Thanks

73

Sejo , N3UA

n...@msn.com



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Re: [Elecraft] KIO3 Digital Board Failed and WSJTx transmit issues

[Jeff Wilson via Elecraft]

Hi EdI just solved a similar problem with my K3 (s/n 1900 plus all K3 upgrades) 
setting up WSJTx after Windows 10 update and having to renumber COM ports that 
use FTDI chip USB adapters.  I could not set my usual config for CAT and PTT 
(using CAT) and got a PTT ERR on the K3 which would go into TX but without 
power on WSJTx boot up.  Just pushing TEST on and then off reset the K3IO and I 
was off to the races.  This is in the original K3 manual, page 19 I think.  

Found on a previous post after search PTT ERR.
In the K3 Manual:  " If a PC or other device asserts RTS or DTR DIGOUT 1 while 
you're in the PTT-KEY menu entry, the K3 will enter TEST mode as a precaution. 
Page 19 In the tables below, 0 = 0 VDC, and 1 = device Normally, when the K3 is 
turned on, a 5-VDC logic supply voltage. signal appears on ACC pin 7 (K3 ON)."
I thought my K3IO was toast as WSJTx software and FTDI serial USB adapters all 
worked fine with my FT-1000mp.  This was caused by adjusting the K3 MENU and 
CONFIG setting while changing things on WSTJx at the same time.must have 
been in panic mode. Hi.
Hope this helps.73Jeff VE3CV
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Re: [Elecraft] KIO3

[Greg Beat]

The main IC for the KIO3 board is the RS-232 Level Converter, U1.
Part most likely to fail due to ESD / Static / External events.

Texas Instruments SN75C1405 (U1), 16-pin Surface Mount.
... a version of the MAX232 with ESD may cross reference.

Board photos
http://www.elecraft.com/K3/mods/AF_Output_Mod_Rev_C.pdf

Sent from iPad Air
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Re: [Elecraft] KIO3 board for K3

[Carl Jón Denbow]

Sent from my iPhone
===
Carl Jón Denbow, N8VZ
17 Coventry Lane
Athens, Ohio 45701-3718
 
c...@n8vz.com
www.n8vz.com
EM89wh
 
IRLP 4533   Echolink 116070
 
PSK and JT65 Forever!
===

> On Apr 21, 2017, at 8:02 PM, Jorge Mejia P  wrote:
> 
> 
> Hello group
> Does anyone have a KIO3 board from K3 that is not in use ?, I lost the one
> on my early K3. 
> If so Please contact me off the list to work out some deal. 
> 
> Thank you
> Jorge HK4CZE
> Sent from my iPad
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Re: [Elecraft] KIO3 boards wanted--redux

[Jan Ditzian]

Barry,

Main computer works.  Netbook works.  Main computer uses USB wifi, so I 
would not be looking at the reflector if USB were broken. Netbook has 
full function, including USB devices.


73,
Jan, KX2A

On 8/9/2016 3:58 AM, Barry Simpson wrote:

Hi Jan

Are you sure that your computer is not fried ?

Barry  VK2BJ


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Re: [Elecraft] KIO3 boards for K3 wanted

[Matthew Lawson]

Jan, sorry to hear about the surge. Is the local utility working with on
replacing gear? This has happened in my family and the utility covered the
cost to replace the items damaged.

Good luck and 73!

*Matthew Lawson*
*KC7EQO*
*442.100 + 100 Hz PL Blyn Mt Repeater*


*http://www.qrz.com/db/KC7EQO/R *


On Mon, Jul 25, 2016 at 4:01 PM, Jan Ditzian  wrote:

> I had a power surge in my home (along with everyone else in the zip code),
> and it looks like my KIO3 boards took a hit via the computer.  I tried a
> new serial-USB converter, and that does not fix the problem.  Elecraft
> suggests that the next step be a new set of I/O boards, but, of course,
> they no longer make them for the K3, and I will have to spend $400 for the
> K3S version, which, while an improvement, is not one that I need.  If
> someone has upgraded his/her K3 with the new boards, I would like to
> discuss purchase of the old ones, if they are fully working.
>
> Thank you,
>
> Jan, KX2A
>
>
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Re: [Elecraft] KIO3 Required

[Mike VE3YF]

Hi:

I have been swamped with replies. Good for the reflector. With the number of 
replies I think I have everything taken care of. Tnx to all who replied.


73 De Mike
VE3YF

http://www.ve3yf.com
[http://www.ve3yf.com/]
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Re: [Elecraft] KIO3 Pinout

[Dr. Werner Furlan]

hi David, 

David Christ schrieb am 19 Oct 2009 um 15:13:

  From my professional experience TxD and RxD may be more common, but 
 RX and TX are used often enough that I would not call them unusual. 
 Certainly using RX and TX should not cause any confusion.

my mail below was not clear in this respect, I did not find the expression TX 
and RX unusual, 
but it was the fact that a transmitting line is called RX(D) and a receiving 
line TX(D). But Don 
W3FPR enlightened me that this is correct because the K3 is a Terminal Device 
and transmits 
on RXD, where the DCE device (computer) is receiving on RXD and transmits on 
TXD. 

 Btw, the naming of RX and TX is unusual in the manual. I think a 
 transmitting line is called
 TXD and a receiving line is called RXD, no matter on which device it is
 located. Data from the K3 = TXD - RXD on the PC, Data from PC -TXD - RXD
 on the K3. (ANSI/EIA/TIA-232-F-1997)


73! de Werner OE9FWV




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Re: [Elecraft] KIO3 Pinout

[David Christ]

 From my professional experience TxD and RxD may be more common, but 
RX and TX are used often enough that I would not call them unusual. 
Certainly using RX and TX should not cause any confusion.

David K0LUM



Btw, the naming of RX and TX is unusual in the manual. I think a 
transmitting line is called
TXD and a receiving line is called RXD, no matter on which device it 
is located.
Data from the K3 = TXD - RXD on the PC, Data from PC -TXD - RXD on the K3.
(ANSI/EIA/TIA-232-F-1997)

73! de Werner OE9FWV
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Re: [Elecraft] KIO3 Pinout

[Don Wilhelm]

Werner,

If I recall correctly from my modem days --
The naming of RXD and TXD is correct for the K3 (it is incorrect for the K2)
A DCE device (computer port for example) transmits on TXD and receives 
on RXD
A DTE device (like the K3 or other terminal device) transmits on RXD and 
recieves from TXD.
Yes, it is confusing, but the standard goes back *much* earlier than 
either the K2 or the K3.

73,
Don W3FPR


Dr. Werner Furlan wrote:

 Btw, the naming of RX and TX is unusual in the manual. I think a 
 transmitting line is called 
 TXD and a receiving line is called RXD, no matter on which device it is 
 located. 
 Data from the K3 = TXD - RXD on the PC, Data from PC -TXD - RXD on the K3. 
 (ANSI/EIA/TIA-232-F-1997)

 73! de Werner OE9FWV

   
 


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