Re: [Elecraft] KIO2 problem -- maybe

[Clark Macaulay]

I had a similar failure several years ago.  Don helped me troubleshoot that
little board and the problem turned out to be a few diodes that got blown
due to a lightning strike.  I was glad it took out the diodes and not the
K2.

I do not use a KUSB converter with the K2 as I have 'real' RS232 ports in
the shack computer.  Since that time, though, I have used a wireless link
between the internet box (also taken out by lightning) and my shack
computer. This removes one path for any future strikes to come through and
blow up my modest shack.

GL on fixing your problem, Dave.  It's worth the time.

On Fri, Nov 19, 2021 at 5:46 PM Don Wilhelm  wrote:

> Dave,
>
> Being a little 'tongue in cheek' the answer is -- That depends on what
> you mean by "good"!
> Seriously, the fact that you can turn it on and off in the menu only
> means that there is a response from the KIO2 when it is communicating
> with the MCU over the AUXBUS line.
> I would suspect the MAX1406 IC, but since there was a lightning strike,
> it could be something different - anything!
>
> First do all the voltage measurements on the KIO2 board.
> Does anything get hot?  The voltage regulator in particular.
> Are you using the "special cable" between the KIO2 and the KUSB cable?
> You MUST use that!  It does not have to be long, but must be present.
> Check that all the inductors show continuity.
>
> If none of that is revealing, I can give you a series of tests that you
> can do to test the KIO2 alone (without removing it).
> If we get to that point, take it off-list (Delete "[Elecraft]" from the
> subject line) and I can give you the steps via private email.
>
> 73,
> Don W3FPR
>
> On 11/19/2021 4:40 PM, Dave Sublette wrote:
> > I had a lightning strike and am getting things back together.  I am
> > attempting to connect via a KUSB cable with a series adapter to make it a
> > proper cable for the K2.
> >
> > The PORT menus says the port is ON and I can turn it ON and OFF as
> outlined
> > in the manual.
> >
> > Prior to the strike, this same radio and cable and software was operating
> > normally.  Now the software cannot connect to the radio, even though the
> > setup shows an available USB/serial port available.
> >
> > I'm wondering if the KUSB cable is bad(probably due to the strike)?
> >
> > First item I need to know, is the KIO2 OK if I can turn it on and off
> from
> > the EDIT menu?  If the KIO2 is good, then it has to be the KUSB cable.
> >
> > What say ye?
> >
> > Thanks,
> >
> > Dave, K4TO
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-- 
73,

Clark, WU4B
Little Pistol With Wires
QRPARCI #10815
SKCC #3892
NAQCC #5055
CWOPS #1869
Collins Collectors #AC90-12432
Southeastern DX Club 
North Georgia QRP Club 


*"It is vain to do with more what can be done with less."*
*Attributed to *William of Occam (1288 AD - 1348 AD)
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Re: [Elecraft] KIO2 problem -- maybe

[Don Wilhelm]

Dave,

Being a little 'tongue in cheek' the answer is -- That depends on what 
you mean by "good"!
Seriously, the fact that you can turn it on and off in the menu only 
means that there is a response from the KIO2 when it is communicating 
with the MCU over the AUXBUS line.
I would suspect the MAX1406 IC, but since there was a lightning strike, 
it could be something different - anything!


First do all the voltage measurements on the KIO2 board.
Does anything get hot?  The voltage regulator in particular.
Are you using the "special cable" between the KIO2 and the KUSB cable?  
You MUST use that!  It does not have to be long, but must be present.

Check that all the inductors show continuity.

If none of that is revealing, I can give you a series of tests that you 
can do to test the KIO2 alone (without removing it).
If we get to that point, take it off-list (Delete "[Elecraft]" from the 
subject line) and I can give you the steps via private email.


73,
Don W3FPR

On 11/19/2021 4:40 PM, Dave Sublette wrote:

I had a lightning strike and am getting things back together.  I am
attempting to connect via a KUSB cable with a series adapter to make it a
proper cable for the K2.

The PORT menus says the port is ON and I can turn it ON and OFF as outlined
in the manual.

Prior to the strike, this same radio and cable and software was operating
normally.  Now the software cannot connect to the radio, even though the
setup shows an available USB/serial port available.

I'm wondering if the KUSB cable is bad(probably due to the strike)?

First item I need to know, is the KIO2 OK if I can turn it on and off from
the EDIT menu?  If the KIO2 is good, then it has to be the KUSB cable.

What say ye?

Thanks,

Dave, K4TO
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Re: [Elecraft] KIO2 problem -- maybe

[David Gilbert]

I agree.  I had a strike zap the KIO3 in my K3 because even though all 
my other gear was unplugged at the time, my laptop (which interfaces to 
my K3) wasn't.   at first thought it was the KUSB.  I bought a second 
one figuring it wouldn't hurt to have a spare if the cable turned out to 
not be the problem ... which it wasn't.


I checked with Elecraft tech support via email to see if individual KIO3 
boards were available, or if mine could be repaired.  They didn't answer 
either of those questions and the sole brief answer was "you should just 
buy the new USB version".  Which cost about $400, of course.


Don, W3FPR, ended up selling me a set of the three boards he had 
replaced for somebody upgrading to the newer boards.  One of those was 
even bad, but luckily not the serial one I needed.  Swapping out the 
serial board by itself fixed the problem.


73,
Dave   AB7E



On 11/19/2021 2:49 PM, Jim Brown wrote:

On 11/19/2021 1:40 PM, Dave Sublette wrote:

I'm wondering if the KUSB cable is bad(probably due to the strike)?


I would expect damage to electronics rather than cables. But ya never 
know. :)


73, Jim K8YC


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Re: [Elecraft] KIO2 problem -- maybe

[Jim Brown]

On 11/19/2021 1:40 PM, Dave Sublette wrote:

I'm wondering if the KUSB cable is bad(probably due to the strike)?


I would expect damage to electronics rather than cables. But ya never 
know. :)


73, Jim K8YC
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[Elecraft] KIO2 problem -- maybe

[Dave Sublette]

I had a lightning strike and am getting things back together.  I am
attempting to connect via a KUSB cable with a series adapter to make it a
proper cable for the K2.

The PORT menus says the port is ON and I can turn it ON and OFF as outlined
in the manual.

Prior to the strike, this same radio and cable and software was operating
normally.  Now the software cannot connect to the radio, even though the
setup shows an available USB/serial port available.

I'm wondering if the KUSB cable is bad(probably due to the strike)?

First item I need to know, is the KIO2 OK if I can turn it on and off from
the EDIT menu?  If the KIO2 is good, then it has to be the KUSB cable.

What say ye?

Thanks,

Dave, K4TO
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Re: [Elecraft] KIO2 Problem

[John R. Lonigro]

Lynn:
This sounds to me like the classic bad solder connection: sometimes it 
works perfectly and sometimes it doesn't work at all.  If you can tune 
in the oscillator when the interface isn't working, you might 
concentrate your inspection from J1 to  U1 and J2.  Also, your tests 
indicate the K2 can send data, but is not receiving it.  That narrows 
your search even more.  Look at the schematic.  Follow the signal from 
J1(pin 3) to U1(pins 6 and 11) and finally to J2(pin 3).  But the board 
is so small that I'd double check all the connections, including the 
RS232 cable, just to make sure.


Hope this helped.

73's,

John AA0VE

[EMAIL PROTECTED] wrote:
I have a K2/100 with KAT100.  The antenna tuner is working fine  when I 
first tried Ham Radio Deluxe, it did not work.  Then a couple of days 
later, unexpectedly, it started working.  Well, it worked a couple of 
weeks just fine, and now, it has quit working.  When I run HRD, I get an 
error message that says something to the effect of unable to obtain 
frequency. 

3.  Ck'd for the oscillator on 16293 kHz  found it.  Verified with 
separate shortwave rcvr  noted that signal goes away when K2 is turned 
off.
4.  Connected using Hyperterminal  switched to Port on menu...when I 
pressed Display...I read FA3922180 on Hyperterminal.  However, when I 
typed 'SW01;' the K2 did not respond.
  
Hmmm.is it time to pull the cover off  start troubleshooting 
internally???  Suggestions?


Tnx  73 de  K5AVJ
Lynn (K2#1411)


  

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RE: [Elecraft] KIO2 Problem

[Don Wilhelm]

Lynn

When something is intermittent like you describe, first suspect that elusive
unsoldered connection.

If it works from the K2 panel, but does not work with control through the
computer interface, check the components shown on sheet 2 of the KPA100
schematic in the lower left corner labeled RS232 Interface first, then
check the K2 Control Board P4 pins 1 and 3 and Pins 25 and 26 of U1.  It
sounds like the TXD path is working, but the RXD path is not, but check them
both.

73,
Don W3FPR

 -Original Message-

 I have a K2/100 with KAT100.  The antenna tuner is working fine  when I
 first tried Ham Radio Deluxe, it did not work.  Then a couple of days
 later, unexpectedly, it started working.  Well, it worked a couple of
 weeks just fine, and now, it has quit working.  When I run HRD, I get an
 error message that says something to the effect of unable to obtain
 frequency.

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RE: [Elecraft] KIO2 Problem

[lbailey]

John  Donthanks for your feedback!  Sound like it should be a cinch. 
I'll pack up the rig  PS  take to work with me tomorrow where I have 
workbench with good magnified lighting  my soldering iron on standby. 
Hope to be back to you in a couple of days with good news that I've found 
the culprit connection.  73, Lynn, K5AVJ 

When something is intermittent like you describe, first suspect that 
elusive
unsoldered connection.
If it works from the K2 panel, but does not work with control through the
computer interface, check the components shown on sheet 2 of the KPA100
schematic in the lower left corner labeled RS232 Interface first, then
check the K2 Control Board P4 pins 1 and 3 and Pins 25 and 26 of U1.  It
sounds like the TXD path is working, but the RXD path is not, but check 
them
both.73,Don W3FPR
===
This sounds to me like the classic bad solder connection: sometimes it 
works perfectly and sometimes it doesn't work at all. If you can tune in 
the oscillator when the interface isn't working, you might concentrate 
your inspection from J1 to U1 and J2. Also, your tests indicate the K2 can 
send data, but is not receiving it. That narrows your search even more. 
Look at the schematic. Follow the signal from J1(pin 3) to U1(pins 6 and 
11) and finally to J2(pin 3). But the board is so small that I'd double 
check all the connections, including the RS232 cable, just to make sure. 
Hope this helped.73's,John AA0VE
===
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[Elecraft] KIO2 Problem

[lbailey]

I have a K2/100 with KAT100.  The antenna tuner is working fine  when I 
first tried Ham Radio Deluxe, it did not work.  Then a couple of days 
later, unexpectedly, it started working.  Well, it worked a couple of 
weeks just fine, and now, it has quit working.  When I run HRD, I get an 
error message that says something to the effect of unable to obtain 
frequency. 

I am using a Dell desktop with a serial port connection(not USB).


So far this is what I've done...
1.  Verified RS232 cable connections,  continuity...all checks out per 
the manual  with VOM for continuity
2.  Verified that Port is 'on' in the secondary menu
3.  Ck'd for the oscillator on 16293 kHz  found it.  Verified with 
separate shortwave rcvr  noted that signal goes away when K2 is turned 
off.
4.  Connected using Hyperterminal  switched to Port on menu...when I 
pressed Display...I read FA3922180 on Hyperterminal.  However, when I 
typed 'SW01;' the K2 did not respond.
5.  Tried using a different computerno success
6.  Also tried TRX Manager softwareno success

Hmmm.is it time to pull the cover off  start troubleshooting 
internally???  Suggestions?

Tnx  73 de  K5AVJ
Lynn (K2#1411)
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[Elecraft] KIO2 problem

[Rolf Göthberg]

   Hi,

   My KIO2 option worked well when it was first assembled. Now it does
   not. The initial test on page 14 in the manual works fine one way
   but not the
   over way. The K2 sends the right trest message to the computet. Typing
   SW01; on the keybord givs no responds by the K2. Nothing happen.
   Does this sound familiar to anyone?
   Yes, Port is ON and I am using the proper cable.

   Best 73, Rolf   SM0YQC
   K2 #4979

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[Elecraft] KIO2 problem

[Sanger, Joseph]

In final stages of building KIO2 interface  Am doing Serial
Interface Test  Using HyperTeminal, I am indeed able to issue the
suggested command, SH01; which causes a band increment.  However,
communication in the opposite direction is nonexistent; that is,
following the procedure on page 14 to issue the Test Message from the K2
causes no response on Hyperterminal. 

 

Any suggestions are, of course, deeply appreciated and welcome.


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RE: [Elecraft] KIO2 problem

[Craig Rairdin]

 However, communication in the opposite direction is nonexistent; 
 that is, following the procedure on page 14 to issue the Test 
 Message from the K2 causes no response on Hyperterminal. 

If you're connecting to your computer via a serial-to-USB adapter, I've
found from comments I've read around the Web that there is a wide range of
performance of these devices, from inoperative to just fine.

I went to BestBuy and bought whatever the only brand was they had on the
shelf and it was kinda like what you're seeing -- responses from the radio
were garbled, truncated, or non-existent. I took that one back and stole one
from another piece of equipment I had that wasn't using it and now it works
fine. There's no brand name on it, but the part number is GUC232A.

This may or may not be your problem but I just wanted to toss it out just in
case.

Craig
NZ0R
K1 #1966
K2/100 #4941

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RE: [Elecraft] KIO2 problem

[Sanger, Joseph]

Thanks, Craig .. the device you are referring to is made by Iogear:
GUC232A - USB to PDA/Serial Adapter ... found it on Google.

 

However, I am going straight in to a serial port on a Dell Latitude D400
notebook ... so I think the problem lies elsewhere.

 

Thaanks again.


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