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KRC2 rs232 to cpu not working

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Gordon LaPoint

KRC2 rs232 to cpu not working

I purchased a used KRC2 band decoder. Going through the tests in the
manual, it works with the buttons on the KRC2, but I can not get the
unit to communicate with my computer. I downloaded the software from
Elecraft, using Windows 7 or 10 and real serial ports (not usb-serial).
What am I doing wrong? or is the unit bad? I have not hooked up the
auxbuss to the K3 yet, wanted to make sure the bandmap and serial port
work first.

Gordon -- N1MGO

--
Gordon - N1MGO

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John K9UWA-2

Re: KRC2 rs232 to cpu not working

ATTENTION: Eric

Elecraft has for several years been saying they were going to rewrite the
horrible KRC2 Utility Program that allows programming of the KRC2. And so
far they have failed to do so. Way back when about 4 years ago I did
manage ONCE to get the KRC2 Utility program to work and programmed
my KRC2. Yes today I would love to reprogram it to allow connection to a
SIX meter antenna. However as you say the program won't work. I tried on
Computer running XP and one running Windows7 both with direct real Serial
Port connection to the KRC2. No Luck for me.

Eric many of us K3 users are using the KRC2 for band decoder to antenna
switching it sure would be nice if we could program the KRC2 easily to do
what we want.

Thanks
John k9uwa

> I purchased a used KRC2 band decoder. Going through the tests in the
> manual, it works with the buttons on the KRC2, but I can not get the
> unit to communicate with my computer. I downloaded the software from
> Elecraft, using Windows 7 or 10 and real serial ports (not usb-serial).
> What am I doing wrong? or is the unit bad? I have not hooked up the
> auxbuss to the K3 yet, wanted to make sure the bandmap and serial port
> work first.
>
> Gordon -- N1MGO

John Goller, K9UWA & Jean Goller, N9PXF
Antique Radio Restorations
[hidden email]
Visit our Web Site at:
http://www.JohnJeanAntiqueRadio.com
4836 Ranch Road
Leo, IN 46765
USA
1-260-637-6426

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Vic Rosenthal

Re: KRC2 rs232 to cpu not working

I got mine to work several years ago on Win 7. As I recall, I had to update both the firmware in the KRC2 and the utility program. It was tricky. I agree that Elecraft needs to clean up this situation.

Vic 4X6GP/K2VCO

> On 21 Oct 2015, at 9:04 PM, John K9UWA <[hidden email]> wrote:
>
> ATTENTION: Eric
>
> Elecraft has for several years been saying they were going to rewrite the
> horrible KRC2 Utility Program that allows programming of the KRC2. And so
> far they have failed to do so. Way back when about 4 years ago I did
> manage ONCE to get the KRC2 Utility program to work and programmed
> my KRC2. Yes today I would love to reprogram it to allow connection to a
> SIX meter antenna. However as you say the program won't work. I tried on
> Computer running XP and one running Windows7 both with direct real Serial
> Port connection to the KRC2. No Luck for me.
>
> Eric many of us K3 users are using the KRC2 for band decoder to antenna
> switching it sure would be nice if we could program the KRC2 easily to do
> what we want.
>
> Thanks
> John k9uwa
>
>
>> I purchased a used KRC2 band decoder. Going through the tests in the
>> manual, it works with the buttons on the KRC2, but I can not get the
>> unit to communicate with my computer. I downloaded the software from
>> Elecraft, using Windows 7 or 10 and real serial ports (not usb-serial).
>> What am I doing wrong? or is the unit bad? I have not hooked up the
>> auxbuss to the K3 yet, wanted to make sure the bandmap and serial port
>> work first.
>>
>> Gordon -- N1MGO
>
>
> John Goller, K9UWA & Jean Goller, N9PXF
> Antique Radio Restorations
> [hidden email]
> Visit our Web Site at:
> http://www.JohnJeanAntiqueRadio.com
> 4836 Ranch Road
> Leo, IN 46765
> USA
> 1-260-637-6426
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
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> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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Wes (N7WS)

Re: KRC2 rs232 to cpu not working

In reply to this post by John K9UWA-2

Amen. Mine sits on the shelf. I was going to remotely switch some antennas
using it. Instead, I have a KAT500 and three runs of Heliax.

Although it has an RS-232 port Elecraft recommends the Aux bus. Just what I need
another Y-connector.

On 10/21/2015 11:04 AM, John K9UWA wrote:

> ATTENTION: Eric
>
> Elecraft has for several years been saying they were going to rewrite the
> horrible KRC2 Utility Program that allows programming of the KRC2. And so
> far they have failed to do so. Way back when about 4 years ago I did
> manage ONCE to get the KRC2 Utility program to work and programmed
> my KRC2. Yes today I would love to reprogram it to allow connection to a
> SIX meter antenna. However as you say the program won't work. I tried on
> Computer running XP and one running Windows7 both with direct real Serial
> Port connection to the KRC2. No Luck for me.
>
> Eric many of us K3 users are using the KRC2 for band decoder to antenna
> switching it sure would be nice if we could program the KRC2 easily to do
> what we want.
>
> Thanks
> John k9uwa
>
>
>> I purchased a used KRC2 band decoder. Going through the tests in the
>> manual, it works with the buttons on the KRC2, but I can not get the
>> unit to communicate with my computer. I downloaded the software from
>> Elecraft, using Windows 7 or 10 and real serial ports (not usb-serial).
>> What am I doing wrong? or is the unit bad? I have not hooked up the
>> auxbuss to the K3 yet, wanted to make sure the bandmap and serial port
>> work first.
>>
>> Gordon -- N1MGO
>
> John Goller, K9UWA & Jean Goller, N9PXF
> Antique Radio Restorations
> [hidden email]
> Visit our Web Site at:
> http://www.JohnJeanAntiqueRadio.com
> 4836 Ranch Road
> Leo, IN 46765
> USA
> 1-260-637-6426
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

Don Wilhelm-4

Re: KRC2 rs232 to cpu not working

In reply to this post by Gordon LaPoint

Gordon,

Have you checked the internal jumpers to be sure it is properly plugged
for use with the K3.
Download the newest KRC2 manual if the one you have does not include use
with the K3 - see page 23.
You have the choice of using the AUXBUS (if you only want the band data).
If you are using the serial port, the baud rate on the K3 and the PC
application must be limited to 19,200 or below.

73,
Don W3FPR

On 10/21/2015 1:15 PM, Gordon LaPoint wrote:
> I purchased a used KRC2 band decoder. Going through the tests in the
> manual, it works with the buttons on the KRC2, but I can not get the
> unit to communicate with my computer. I downloaded the software from
> Elecraft, using Windows 7 or 10 and real serial ports (not
> usb-serial). What am I doing wrong? or is the unit bad? I have not
> hooked up the auxbuss to the K3 yet, wanted to make sure the bandmap
> and serial port work first.
>
>

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Michael Eberle

Re: KRC2 rs232 to cpu not working

A lot of people seem to be having issues with it. I remember mine being
a pain to get set up (mostly operator error) but it works fine now. I
use it to switch amp keying from the KPA500 to the 2M amp when the 2M
band is selected on the K3. When 2M is selected, the KRC2 energizes a
relay that switches the key out of the K3 to the 2M amp. You do have to
change the switch on the side from OP to DL before it will communicate
with the computer. Also I believe you have to set the baud rate on the
KRC2 with jumpers.

Mike
KI0HA

>> I purchased a used KRC2 band decoder. Going through the tests in the
>> manual, it works with the buttons on the KRC2, but I can not get the
>> unit to communicate with my computer. I downloaded the software from
>> Elecraft, using Windows 7 or 10 and real serial ports (not
>> usb-serial). What am I doing wrong? or is the unit bad? I have not
>> hooked up the auxbuss to the K3 yet, wanted to make sure the bandmap
>> and serial port work first.
>>
>>
>
> ______________________________________________________________

Bill Frantz

Re: KRC2 rs232 to cpu not working

After reading about the problems people are having getting their
PCs to talk to the KRC2, I think I'm glad I rolled my own with
an Arduino and the band lines from the K3. I learned a lot about
hardware, and had a fun construction project. Now antenna switch
controller sits next to the K3 and automatically selects an
antenna for each band. Too bad the encoding for the 60M band
aliases the transverter bands. I may have to teach the Arduino
async ASCII should the aliasing become a problem, or if I
develop a need to know where in a band the K3 is tuned.

73 Bill AE6JV

-----------------------------------------------------------------------
Bill Frantz | Concurrency is hard. 12 out | Periwinkle
(408)356-8506 | 10 programmers get it wrong. | 16345
Englewood Ave
www.pwpconsult.com | - Jeff Frantz | Los Gatos,
CA 95032

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Gordon LaPoint

Re: KRC2 rs232 to cpu not working

In reply to this post by Gordon LaPoint

Jack, and others that have sent advice

I have the latest manual from the Elecraft website. I have only
followed the manual as far as testing the unit from the buttons on the
unit, which works fine, and using the rs232 to computer using the latest
Elecraft software to try to check/set the band map. That I have not got
working yet. The software never finds the KRC2 on the serial port. I
tried two computers, one using win7 the other using win10. Both
computers have pciE serial cards, NOT usb to serial. Both computers
talk to my K3 and KPA500 just fine.
I will try to work on it again this weekend and see what else I can come
up with.
I have double and triple checked the jumpers for proper setup for
rs232 setup, tried changing the baud rate, using all three. the KRC2
software can not see the unit. I can check the serial lines with a
scope to see if the signals are geting to the pic chip, but that will
have to wait until the weekend.
Thanks for the help,

Gordon - N1MGO

On 10/21/2015 06:33 PM, Jack Brindle wrote:

> Gordon;
>
> How can I help? Please describe what you are trying to do, what has worked and what hasn’t.
>
> Also, a good description of the jumpers, inserted and not, would be very helpful.
>
> If you don’t have it, be sure to download the manual from the Elecraft website.
>
> Jack Brindle, W6FB
> Elecraft Engineering
>
>> On Oct 21, 2015, at 10:15 AM, Gordon LaPoint <[hidden email]> wrote:
>>
>> I purchased a used KRC2 band decoder. Going through the tests in the manual, it works with the buttons on the KRC2, but I can not get the unit to communicate with my computer. I downloaded the software from Elecraft, using Windows 7 or 10 and real serial ports (not usb-serial). What am I doing wrong? or is the unit bad? I have not hooked up the auxbuss to the K3 yet, wanted to make sure the bandmap and serial port work first.
>>
>> Gordon -- N1MGO
>>
>> --
>> Gordon - N1MGO
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
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>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]

--
Gordon - N1MGO

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Byron Servies

Re: KRC2 rs232 to cpu not working

Hi Gordon,

I recently, and finally, got to the point where I needed to set up
band maps in my KRC2. I also use PCIe serial cards and Windows 10 and
the problem I had was the cable. Once I built a cable using exactly
the pinouts in the KRC2 manual (instead of cables I had laying
around), it worked fine, as did the firmware update.

Sorry I cannot be of more help, but that is what worked for me.

73, Byron N6NUL

On Thu, Oct 22, 2015 at 5:38 AM, Gordon LaPoint
<[hidden email]> wrote:

> Jack, and others that have sent advice
>
> I have the latest manual from the Elecraft website. I have only
> followed the manual as far as testing the unit from the buttons on the unit,
> which works fine, and using the rs232 to computer using the latest Elecraft
> software to try to check/set the band map. That I have not got working yet.
> The software never finds the KRC2 on the serial port. I tried two
> computers, one using win7 the other using win10. Both computers have pciE
> serial cards, NOT usb to serial. Both computers talk to my K3 and KPA500
> just fine.
> I will try to work on it again this weekend and see what else I can come up
> with.
> I have double and triple checked the jumpers for proper setup for rs232
> setup, tried changing the baud rate, using all three. the KRC2 software can
> not see the unit. I can check the serial lines with a scope to see if the
> signals are geting to the pic chip, but that will have to wait until the
> weekend.
> Thanks for the help,

--
- Northern California Contest Club
- CU in the Cal QSO Party 1-2 Oct 2016
- www.cqp.org
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Gordon LaPoint

Re: KRC2 rs232 to cpu not working

Byron,
Thanks! I will check my serial cable pinout, I think I'm using a
straight thru with all pins connectd. I may have to make a cable with
just the pins connected that the manual specifies.

Gordon - N1MGO

On 10/22/2015 01:21 PM, Byron Servies wrote:

> Hi Gordon,
>
> I recently, and finally, got to the point where I needed to set up
> band maps in my KRC2. I also use PCIe serial cards and Windows 10 and
> the problem I had was the cable. Once I built a cable using exactly
> the pinouts in the KRC2 manual (instead of cables I had laying
> around), it worked fine, as did the firmware update.
>
> Sorry I cannot be of more help, but that is what worked for me.
>
> 73, Byron N6NUL
>

Bob-270

Re: KRC2 rs232 to cpu not working

That may not be necessary. I'm working from memory which is a horrible thing
to try and use but if I recall correctly each of the 9 pin connectors have
jumpers on each pin. Some time ago when I had installation troubles with mine
I determined what was actually needed in my case and removed all unnecessary
jumpers. Bingo! All issues went away... I did not try to determine what
connections were the problem

I had a PC connected thru a USB to RS232 convertor and the K3 Aux buss on the
other port. Both now remain connected even when not it use.

My KRC controls an Array Solution Six Pack.. It has an added switch so can
do fully automatic switching or manual override.

73,
Bob
K2TK ex KN2TKR (1956) & K2TKR

On 10/22/2015 1:25 PM, Gordon LaPoint wrote:

> Byron,
> Thanks! I will check my serial cable pinout, I think I'm using a
> straight thru with all pins connectd. I may have to make a cable with just
> the pins connected that the manual specifies.
>
> Gordon - N1MGO
>
> On 10/22/2015 01:21 PM, Byron Servies wrote:
>> Hi Gordon,
>>
>> I recently, and finally, got to the point where I needed to set up
>> band maps in my KRC2. I also use PCIe serial cards and Windows 10 and
>> the problem I had was the cable. Once I built a cable using exactly
>> the pinouts in the KRC2 manual (instead of cables I had laying
>> around), it worked fine, as did the firmware update.
>>
>> Sorry I cannot be of more help, but that is what worked for me.
>>
>> 73, Byron N6NUL
>>
>

Jim Brown-10

Re: KRC2 rs232 to cpu not working

On Thu,10/22/2015 5:20 PM, Bob wrote:
> That may not be necessary. I'm working from memory which is a
> horrible thing to try and use but if I recall correctly each of the 9
> pin connectors have jumpers on each pin.

It is important to understand that the DB9 connectors on the KRC2 ARE
NOT for an RS232 connection, and, in general, will NOT WORK with
standard RS232 cables. It's wiring is VERY different, because the
product was originally designed to work with the K2 remote control,
which is also very different from RS232. Wiring is shown in the manual
(Fig 6).

On the DB9 connectors, ONLY pins 2, 3, and 5 are used for serial
control, and are wired to corresponding pins on a computer serial port.

I used to have two KRC2s in my station controlling sets of W3NQN
bandpass filters with the Array Solutions switchbox. I don't remember
details of the hookup, but the manual clearly shows how the KRC2 can be
configured for a variety of uses.

One very useful piece of information is that band data from the K2 and
K3 to the KRC2 is contained in the single AUX Bus circuit, which I
implemented with a coax cable between my K3 15-pin AUX connector and the
KRC2. That bus is Pin 6 on the DB9 connectors.

73, Jim K9YC

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John K9UWA-2

Re: KRC2 rs232 to cpu not working

THANKS JIM

After 4+ years of dealing with the inability to reprogram the KRC2. Finally the
real Answer as to how to connect the KRC2 to the Serial DB9 of your
computer and program it with the Utility Program. Yes 4 years ago when I
assembled the KRC2 after three very long frustrating days I managed to get
the band map program to work and the box is programmed up for 9 HF
bands. And I like many others now wish to reprogram it for SIX meter
antenna.

A simple statement in the KRC2 manual could have been added by Elecraft
stating. To Program your KRC2 to your K3 radio get a standard DB9 serial
cable. and CUT OFF all wires EXCEPT 2, 3 and 5. Mark the cable Program
KCR2 ONLY and save the cable for future use. I wonder how many
additional KRC2 boxes Elecraft could have sold over the last 4 years?

Again thanks Jim for the simple solution.
John k9uwa

> It is important to understand that the DB9 connectors on the KRC2 ARE
> NOT for an RS232 connection, and, in general, will NOT WORK with
> standard RS232 cables. It's wiring is VERY different, because the
> product was originally designed to work with the K2 remote control,
> which is also very different from RS232. Wiring is shown in the manual
> (Fig 6).
>
> On the DB9 connectors, ONLY pins 2, 3, and 5 are used for serial
> control, and are wired to corresponding pins on a computer serial port.
>
> I used to have two KRC2s in my station controlling sets of W3NQN
> bandpass filters with the Array Solutions switchbox. I don't remember
> details of the hookup, but the manual clearly shows how the KRC2 can be
> configured for a variety of uses.
>
> One very useful piece of information is that band data from the K2 and
> K3 to the KRC2 is contained in the single AUX Bus circuit, which I
> implemented with a coax cable between my K3 15-pin AUX connector and the
> KRC2. That bus is Pin 6 on the DB9 connectors.
>
> 73, Jim K9YC

Don Wilhelm-4

Re: KRC2 rs232 to cpu not working

John,

Actually a standard serial cable can be connected to the KRC2 if jumpers
W11 thru W20 are removed, no need to cut off wires in the cable.
That information *is* in the plugging configuration charts.

73,
Don W3FPR

On 10/25/2015 8:43 AM, John K9UWA wrote:
>
> A simple statement in the KRC2 manual could have been added by Elecraft
> stating. To Program your KRC2 to your K3 radio get a standard DB9 serial
> cable. and CUT OFF all wires EXCEPT 2, 3 and 5. Mark the cable Program
> KCR2 ONLY and save the cable for future use. I wonder how many
> additional KRC2 boxes Elecraft could have sold over the last 4 years?
>
>

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Michael Eberle

Re: KRC2 rs232 to cpu not working

In reply to this post by John K9UWA-2

What is the issue with using the KRC2 on six meters? Mine works with my
K3 on 6 and also 2 meters by setting the 6M transceiver band to the XV1
control output and 2M transceiver band to the XV2 control output.

Mike
KI0HA

On 10/25/2015 7:43 AM, John K9UWA wrote:
> And I like many others now wish to reprogram it for SIX meter
> antenna.
>
>

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Gordon LaPoint

Re: KRC2 rs232 to cpu not working

In reply to this post by Gordon LaPoint

Jack, (and others on the list)
Thanks for the pointers. I was unable to get the rs-232 to the
computer working. I have not tried the Aux-bus to the K3 yet. I think
I will contact elecraft service and see if I can send it back for a
look-see by them. I can not tell what it has for firmware or set the
bandmap without the rs232.
I had only the jumpers in for the RS-232 connection, and the serial
cable is only wired up for rx, tx and gnd (pins 2,3 and 5). I tried all
the baud rates, I did verify that the serial port and cable worked with
my KPA-500 and W2 meter.

Gordon - N1MGO

On 10/22/2015 02:17 PM, Jack Brindle wrote:

> Gordon;
>
> When you get ready to test, send me an email. I will be around this weekend, although I plan on spending some time in CQ WW.
>
> One thing that is very critical. Using a straight-through RS-232 cable will put high voltage (12V) signals on the microcontroller and can
> damage it. I hope that isn’t the situation you are seeing.
>
> The microcontroller reads the W1-8 jumpers only at power-up, so after you change the jumpers you must power cycle the KRC2.
> You can reset the bandpass to factory default by holding the F4 button at power up. This requires the V1.6 firmware, which has
> been out for several years. There should be a sticker on the MCU that indicates the firmware it held when it left the factory, but
> that becomes invalid after the firmware is upgraded. At that point, the only real way to tell the difference is to query the MCU
> with the KRC2 Utility. When you try that utility, the DL/OP switch inside the KRC2 needs to be on the DL position. It should be
> in the OP position for normal use if you are using RS232 to communicate with the radio.
>
> Let me know when you get testing and I’ll help as much as I can. We really do want to get you going with your KRC2 as quickly as possible.
>
> 73,
>
> - Jack Brindle, W6FB
> Elecraft Engineering
>

Gordon LaPoint

Re: KRC2 rs232 to cpu not working

In reply to this post by Don Wilhelm-4

All,
I found the problem. My serial cable had a broken wire on pin
2. I had used the serial cable on my KPA-500 and it was working. Must
have broken when I removed it from the system and used it to test the
KRC2. Thanks for all the pointers and help! Murphy is so busy at my QTH,
hope he leaves soon!

Thank you,
Gordon - N1MGO

On 10/25/2015 08:54 AM, Don Wilhelm wrote:

> John,
>
> Actually a standard serial cable can be connected to the KRC2 if
> jumpers W11 thru W20 are removed, no need to cut off wires in the cable.
> That information *is* in the plugging configuration charts.
>
> 73,
> Don W3FPR
>
> On 10/25/2015 8:43 AM, John K9UWA wrote:
>>
>> A simple statement in the KRC2 manual could have been added by Elecraft
>> stating. To Program your KRC2 to your K3 radio get a standard DB9 serial
>> cable. and CUT OFF all wires EXCEPT 2, 3 and 5. Mark the cable Program
>> KCR2 ONLY and save the cable for future use. I wonder how many
>> additional KRC2 boxes Elecraft could have sold over the last 4 years?
>>
>>
>
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