Re: [Elecraft] Band decoder ala KRC2

[Paul GACEK via Elecraft]

The KRC2 is a fun project to complete.

Here’s my snaps and narrative if anyone is interested.

https://nomadic.blog/2019/01/07/suitcase-dxpedition-station-automation-step-1-the-elecraft-krc2/
 


Paul
W6PNG

> On May 14, 2021, at 3:29 PM, Gary K9GS  wrote:
> 
> It's available from DX Engineering 
> https://www.dxengineering.com/parts/ums-bcd-1473,Gary K9GS
>  Original message From: Jim Cary  Date: 
> 5/14/21  4:14 PM  (GMT-05:00) To: Dave Fugleberg  Cc: 
> elecraft@mailman.qth.net Subject: Re: [Elecraft] Band decoder ala KRC2 Dave, 
> that is on my radar.73,Jim> On May 14, 2021, at 4:08 PM, Dave Fugleberg 
>  wrote:> > Depending on your needs, the BCD-14 from 
> Unified Microsystems is worth a look. I use the older model BCD-10 for some 
> external transverter switching with my K3. > It’s just the populated PCB; you 
> have to provide your own wiring and connectors. The price is right though.> 
> 73 de W0ZF > > On Fri, May 14, 2021 at 2:38 PM Jim Cary  > wrote:> Looking for a band decoder similar to 
> the discontinued KRC2 for my K3 to control my antenna switch.  Doesn’t have 
> to have a lot of bells and whistles.  Would appreciate any suggestions.> > 
> Tnx and 73,> > Jim> W2SM> > > 
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Re: [Elecraft] Band decoder ala KRC2

[Gary K9GS]

It's available from DX Engineering 
https://www.dxengineering.com/parts/ums-bcd-1473,Gary K9GS
 Original message From: Jim Cary  Date: 
5/14/21  4:14 PM  (GMT-05:00) To: Dave Fugleberg  Cc: 
elecraft@mailman.qth.net Subject: Re: [Elecraft] Band decoder ala KRC2 Dave, 
that is on my radar.73,Jim> On May 14, 2021, at 4:08 PM, Dave Fugleberg 
 wrote:> > Depending on your needs, the BCD-14 from 
Unified Microsystems is worth a look. I use the older model BCD-10 for some 
external transverter switching with my K3. > It’s just the populated PCB; you 
have to provide your own wiring and connectors. The price is right though.> 73 
de W0ZF > > On Fri, May 14, 2021 at 2:38 PM Jim Cary mailto:jimlc...@gmail.com>> wrote:> Looking for a band decoder similar to the 
discontinued KRC2 for my K3 to control my antenna switch.  Doesn’t have to have 
a lot of bells and whistles.  Would appreciate any suggestions.> > Tnx and 73,> 
> Jim> W2SM> > > 
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Re: [Elecraft] Band decoder ala KRC2

[Joe Subich, W4TV]

microHAM Station Master:
  https://www.microham.com/contents/en-us/d132_SM.html
  http://microham-usa.com/store/product-info.php?pid12.html

73,

   ... Joe, W4TV


On 2021-05-14 3:36 PM, Jim Cary wrote:

Looking for a band decoder similar to the discontinued KRC2 for my K3 to 
control my antenna switch.  Doesn’t have to have a lot of bells and whistles.  
Would appreciate any suggestions.

Tnx and 73,

Jim
W2SM



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Re: [Elecraft] Band decoder ala KRC2

[Christian Friess]

Hi Cary,

I am happy with the products from RemoteQTH 
https://remoteqth.com/arduino-band-decoder.php


Antenna switch https://remoteqth.com/six-to-one-antenna-switch.php

73 de Chris, DL2MDU


Am 14.05.21 um 21:36 schrieb Jim Cary:

Looking for a band decoder similar to the discontinued KRC2 for my K3 to 
control my antenna switch.  Doesn’t have to have a lot of bells and whistles.  
Would appreciate any suggestions.

Tnx and 73,

Jim
W2SM


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Re: [Elecraft] Elecraft] Band decoder ala KRC2

[john]

Decades ago I bought Top Ten band decoders for my Yaesu transceivers. When I
purchased Elecraft K3s radios I rewired them and they have worked perfectly
for switching my Array Solutions SixPak antenna relay box.  Newer models are
called Band-Aide Band Decoders can control many more relays than mine.

John KK9A


Jim Cary W2SM wrote

Looking for a band decoder similar to the discontinued KRC2 for my K3 to
control my antenna switch.  Doesn't have to have a lot of bells and
whistles.  Would appreciate any suggestions.

Tnx and 73,

Jim
W2SM

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Re: [Elecraft] Band decoder ala KRC2

[Jim Cary]

Dave, that is on my radar.

73,

Jim


> On May 14, 2021, at 4:08 PM, Dave Fugleberg  wrote:
> 
> Depending on your needs, the BCD-14 from Unified Microsystems is worth a 
> look. I use the older model BCD-10 for some external transverter switching 
> with my K3. 
> It’s just the populated PCB; you have to provide your own wiring and 
> connectors. The price is right though.
> 73 de W0ZF 
> 
> On Fri, May 14, 2021 at 2:38 PM Jim Cary  > wrote:
> Looking for a band decoder similar to the discontinued KRC2 for my K3 to 
> control my antenna switch.  Doesn’t have to have a lot of bells and whistles. 
>  Would appreciate any suggestions.
> 
> Tnx and 73,
> 
> Jim
> W2SM
> 
> 
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Re: [Elecraft] Band decoder ala KRC2

[Dave Fugleberg]

Depending on your needs, the BCD-14 from Unified Microsystems is worth a
look. I use the older model BCD-10 for some external transverter switching
with my K3.
It’s just the populated PCB; you have to provide your own wiring and
connectors. The price is right though.
73 de W0ZF

On Fri, May 14, 2021 at 2:38 PM Jim Cary  wrote:

> Looking for a band decoder similar to the discontinued KRC2 for my K3 to
> control my antenna switch.  Doesn’t have to have a lot of bells and
> whistles.  Would appreciate any suggestions.
>
> Tnx and 73,
>
> Jim
> W2SM
>
>
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Re: [Elecraft] Band decoder ala KRC2

[weave...@usermail.com]

That’s odd. I just entered KRC2 in the search box on the main Elecraft page and 
it took me right to it.

73,
Bill WE5P

Comfortably Numb

> On May 14, 2021, at 15:48, Jim Cary  wrote:
> 
> Jack,
> 
> Thanks.  I couldn’t find it on the website and when I called the sales 
> customer service line they had no idea what I was talking about!
> 
> Jim
> 
> 
>> On May 14, 2021, at 3:40 PM, Jack Brindle  wrote:
>> 
>> The KRC2 is still on the Elecraft web site, available for order. I would 
>> have been told if it were discontinued, and have not been so notified.
>> 
>> url is: 
>> https://elecraft.com/products/krc2-band-decoder-with-relays-k-line-and-k2 
>> 
>> 
>> 73!
>> Jack, W6FB
>> 
>> 
 On May 14, 2021, at 12:36 PM, Jim Cary >>> > wrote:
>>> 
>>> Looking for a band decoder similar to the discontinued KRC2 for my K3 to 
>>> control my antenna switch.  Doesn’t have to have a lot of bells and 
>>> whistles.  Would appreciate any suggestions.
>>> 
>>> Tnx and 73,
>>> 
>>> Jim
>>> W2SM
>>> 
>>> 
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>>> 
>>> Message delivered to jackbrin...@me.com 
> 
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Re: [Elecraft] Band decoder ala KRC2

[Jim Cary]

Jack,

Thanks.  I couldn’t find it on the website and when I called the sales customer 
service line they had no idea what I was talking about!

Jim


> On May 14, 2021, at 3:40 PM, Jack Brindle  wrote:
> 
> The KRC2 is still on the Elecraft web site, available for order. I would have 
> been told if it were discontinued, and have not been so notified.
> 
> url is: 
> https://elecraft.com/products/krc2-band-decoder-with-relays-k-line-and-k2 
> 
> 
> 73!
> Jack, W6FB
> 
> 
>> On May 14, 2021, at 12:36 PM, Jim Cary > > wrote:
>> 
>> Looking for a band decoder similar to the discontinued KRC2 for my K3 to 
>> control my antenna switch.  Doesn’t have to have a lot of bells and 
>> whistles.  Would appreciate any suggestions.
>> 
>> Tnx and 73,
>> 
>> Jim
>> W2SM
>> 
>> 
>> __
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>> Please help support this email list: http://www.qsl.net/donate.html 
>> 
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Re: [Elecraft] Band decoder ala KRC2

[Jack Brindle via Elecraft]

The KRC2 is still on the Elecraft web site, available for order. I would have 
been told if it were discontinued, and have not been so notified.

url is: 
https://elecraft.com/products/krc2-band-decoder-with-relays-k-line-and-k2 


73!
Jack, W6FB


> On May 14, 2021, at 12:36 PM, Jim Cary  wrote:
> 
> Looking for a band decoder similar to the discontinued KRC2 for my K3 to 
> control my antenna switch.  Doesn’t have to have a lot of bells and whistles. 
>  Would appreciate any suggestions.
> 
> Tnx and 73,
> 
> Jim
> W2SM
> 
> 
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[Elecraft] Band decoder ala KRC2

[Jim Cary]

Looking for a band decoder similar to the discontinued KRC2 for my K3 to 
control my antenna switch.  Doesn’t have to have a lot of bells and whistles.  
Would appreciate any suggestions.

Tnx and 73,

Jim
W2SM


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Re: [Elecraft] New KPA500 problem.

[Andy Durbin]

"Nope, this one I remember. It depends on what is plugged into the AUXIO 
connector. If nothing, then the KPA will see the BAND signals all high and will 
assume that no K3 is connected. "

My test specification was - "Disconnect everything except KPA500 power and 
press each KPA500 band button.  Observe KPA500 either displays the appropriate 
band frequency or it does not.  If test works then add external band control 
(RF, AUX, or KPA Utility)."

I still think that test is valid but I admit that I had to test it when you 
raised the RADIO selection issue.  As always though I learn something new when 
we exchange email.

Thanks and 73,
Andy, k3wyc






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Re: [Elecraft] New KPA500 problem.

[Jack Brindle via Elecraft]

Nope, this one I remember. It depends on what is plugged into the AUXIO 
connector. If nothing, then the KPA will see the BAND signals all high and will 
assume that no K3 is connected. If a K3S is connected (or K3 with KIO3B), but 
off, then the same situation applies since the K3S will not pull the BAND 
signals to Vcc in this case. In this situation, it will then act the same as if 
RADIO is set to BCD and will change the band on its own in response to a band 
button press.

If a K3 with the original KIO3 board is connected, then the KPA will behave 
exactly as I described. in this case the KIO3 is pulling the BAND signals to 
Vcc (0V) and thus indicating 60 meters (even though it is off). The KPA will 
then believe the radio is active and will try to send the band info to the 
radio, but will not see a band change. It will thus stay on 60 meters.

So, it depends on the radio, but my original analysis is actually correct.

73!
Jack, W6FB

> On May 14, 2021, at 11:03 AM, Andy Durbin  wrote:
> 
> "If you try this, be sure to set RADIO = BCD. If it is set to K3 (the 
> default), then tapping a band button results in sending an AuxBus message to 
> the K3, which will then change bands. With no K3 connected, nothing will 
> happen."
> 
> Well my KPA500 must be broken.  It changes bands with the band buttons with 
> neither serial port connected and no AUX data source and with K3 selected as 
> radio.  It also changes bands with any other radio type selected.
> 
> Time for a code inspection?
> 
> 73,
> Andy, k3wyc

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Re: [Elecraft] New KPA500 problem.

[Andy Durbin]

"If you try this, be sure to set RADIO = BCD. If it is set to K3 (the default), 
then tapping a band button results in sending an AuxBus message to the K3, 
which will then change bands. With no K3 connected, nothing will happen."

Well my KPA500 must be broken.  It changes bands with the band buttons with 
neither serial port connected and no AUX data source and with K3 selected as 
radio.  It also changes bands with any other radio type selected.

Time for a code inspection?

73,
Andy, k3wyc


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Re: [Elecraft] New KPA500 problem.

[Jack Brindle via Elecraft]

If you try this, be sure to set RADIO = BCD. If it is set to K3 (the default), 
then tapping a band button results in sending an AuxBus message to the K3, 
which will then change bands. With no K3 connected, nothing will happen.

Andy, you really should get a K3S or K4… 

73!
Jack, W6FB
 

> On May 14, 2021, at 10:05 AM, Andy Durbin  wrote:
> 
> "How about disconnecting all cables except power, antenna, and keying line 
> and testing if the amp operates properly with RF detection?"
> 
> Why not start by eliminating everything except the KPA500?
> 
> Disconnect everything except KPA500 power and press each KPA500 band button.  
> Observe KPA500 either displays the appropriate band frequency or it does not. 
>  If test works then add external band control (RF, AUX, or KPA Utility).
> 
> Andy, k3wyc
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[Elecraft] New KPA500 problem.

[Andy Durbin]

"How about disconnecting all cables except power, antenna, and keying line and 
testing if the amp operates properly with RF detection?"

Why not start by eliminating everything except the KPA500?

Disconnect everything except KPA500 power and press each KPA500 band button.  
Observe KPA500 either displays the appropriate band frequency or it does not.  
If test works then add external band control (RF, AUX, or KPA Utility).

Andy, k3wyc
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Re: [Elecraft] New KPA500 problem.

[wa2...@gmail.com]

How about disconnecting all cables except power, antenna, and keying line and 
testing if the amp operates properly with RF detection?   Ken  WA2LBI  LG G6 
-- Original message--From: Jack Brindle via ElecraftDate: Fri, May 14, 
2021 12:29To: Steve Fox;Cc: elecraft@mailman.qth.net;Subject:Re: [Elecraft] New 
KPA500 problem.Steve;

The KPA is getting info that indicates that the input band is invalid. This is 
either coming from the radio’s BCD pins or from RF sampled by the KPA500. First 
thing to make sure is that the pins in the AUX cable are contacting properly, 
and are not bent and thus not plugging in properly. Check this on both cables, 
all four connectors. 

Did you get this indication without transmitting any RF? If you did get it from 
an RF transmission, that would indicate that the sampled RF is outside the 
acceptable range of the KPA. This range is from 1.6 to 26 MHz and from 28 to 54 
MHz.

Let’s see what we can do to gt you going - I may ask for a fault log if your
 checks don’t fix things so I can see exactly where the band problem is being 
picked up.

73,
Jack, W6FB
Elecraft Engineering


> On May 14, 2021, at 8:47 AM, Steve Fox  wrote:
> 
> In a mild panic here. Need some wise advice. 
> 
> Set up my brand new KPA500 and KAT500 today with my K3. Used only Elecraft 
> cables and followed the wiring configuration carefully. Set the K3 for bypass 
> of the internal ATU. All the KPA menu items are set to factory default. 
> 
> When I power up the KPA the screen says INVALID.  My limited understanding is 
> that the KPA thinks it is being told to operate outside of its frequency 
> range. But the K3 is set to 80m and well within the band edges. 
> 
> My thinking is we have a failure to communicate in that the K3 is not sending 
> the frequency to the KPA, perhaps sending no info at all.
> 
> Any thoughts?  I’m assuming I have overlooked a simple setting on the K3 
> and/or the KPA. 
> 
> Tnx and 73
> 
> Steve
> KA4FOX
>
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Re: [Elecraft] New KPA500 problem.

[Jack Brindle via Elecraft]

Steve;

The KPA is getting info that indicates that the input band is invalid. This is 
either coming from the radio’s BCD pins or from RF sampled by the KPA500. First 
thing to make sure is that the pins in the AUX cable are contacting properly, 
and are not bent and thus not plugging in properly. Check this on both cables, 
all four connectors. 

Did you get this indication without transmitting any RF? If you did get it from 
an RF transmission, that would indicate that the sampled RF is outside the 
acceptable range of the KPA. This range is from 1.6 to 26 MHz and from 28 to 54 
MHz.

Let’s see what we can do to gt you going - I may ask for a fault log if your 
checks don’t fix things so I can see exactly where the band problem is being 
picked up.

73,
Jack, W6FB
Elecraft Engineering


> On May 14, 2021, at 8:47 AM, Steve Fox  wrote:
> 
> In a mild panic here. Need some wise advice. 
> 
> Set up my brand new KPA500 and KAT500 today with my K3. Used only Elecraft 
> cables and followed the wiring configuration carefully. Set the K3 for bypass 
> of the internal ATU. All the KPA menu items are set to factory default. 
> 
> When I power up the KPA the screen says INVALID.  My limited understanding is 
> that the KPA thinks it is being told to operate outside of its frequency 
> range. But the K3 is set to 80m and well within the band edges. 
> 
> My thinking is we have a failure to communicate in that the K3 is not sending 
> the frequency to the KPA, perhaps sending no info at all.
> 
> Any thoughts?  I’m assuming I have overlooked a simple setting on the K3 
> and/or the KPA. 
> 
> Tnx and 73
> 
> Steve
> KA4FOX
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[Elecraft] New KPA500 problem.

[Steve Fox]

In a mild panic here. Need some wise advice. 

Set up my brand new KPA500 and KAT500 today with my K3. Used only Elecraft 
cables and followed the wiring configuration carefully. Set the K3 for bypass 
of the internal ATU. All the KPA menu items are set to factory default. 

When I power up the KPA the screen says INVALID.  My limited understanding is 
that the KPA thinks it is being told to operate outside of its frequency range. 
But the K3 is set to 80m and well within the band edges. 

My thinking is we have a failure to communicate in that the K3 is not sending 
the frequency to the KPA, perhaps sending no info at all.

Any thoughts?  I’m assuming I have overlooked a simple setting on the K3 and/or 
the KPA. 

Tnx and 73

Steve
KA4FOX
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[Elecraft] W2 Sensor Trade

[Ronnie Hull]

Howdy men
I have, excess to my needs here.. the 2KW HF, 1.8-54mhz  sensor for the W2 
wattmeter.  P/N is E850365.  I would like to trade this straight up for a 
Uhf/Vhf sensor, elecraft p/n E850370

Contact me off list at w5sum at comcast dot net

Thanks and 73
Ronnie W5SUM



Sent from Mail for Windows 10



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Re: [Elecraft] ALC issue - K3s

[Mike K8CN]

Dick,

If you use the AUX cable between the K3S and the KPA500, check the ALC THR
setting on the KPA500 to be sure its ALC threshold level is not set too low.

Have you tried running the K3S directly into a dummy load to see if the ALC
behavior is the same as what you've observed (or run the KPA500 in STBY mode
to bypass its PA)?

Just wondering if the issue arises in the KPA500 ALC feedback to the K3S
rather than directly in the K3S itself?

Mike, K8CN



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