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K3 Question on KXV3B

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K3 Question on KXV3B

While reading the K3s FAQ's it says that the new KXV3B Interface board has the new PR6-10 low-noise amplifier (LNA) as part of the circuitry. Further reading suggests that this board can replace the KXV3A board in the K3. I have not been able to find the "manual" yet as I suspect it is still being edited. I was just wondering if there were any other changes that needed to be made to accommodate the swap as this sounds like an excellent upgrade for the K3.Bill-W0BBI
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Matt Zilmer-2

Re: K3 Question on KXV3B

The KXV3B is a direct replacement for the KXV3 or KXV3A. No mods are
needed.

73!
matt
W6NIA

On Thu, 21 May 2015 14:22:47 +0000 (UTC), you wrote:

>While reading the K3s FAQ's it says that the new KXV3B Interface board has the new PR6-10 low-noise amplifier (LNA) as part of the circuitry. Further reading suggests that this board can replace the KXV3A board in the K3. I have not been able to find the "manual" yet as I suspect it is still being edited. I was just wondering if there were any other changes that needed to be made to accommodate the swap as this sounds like an excellent upgrade for the K3.Bill-W0BBI
>______________________________________________________________
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Matt Zilmer, W6NIA
www.elecraft.com
831-763-4211 x129

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wayne burdick

Re: K3 Question on KXV3B

Administrator

In reply to this post by Elecraft mailing list

The addition of the low-noise amplifier for 12-6 meters is the only change. The module is compatible with either the K3 or K3S. The manual will be posted when it's complete.

73,
Wayne
N6KR

On May 21, 2015, at 7:22 AM, Bill Wiehe via Elecraft <[hidden email]> wrote:

> While reading the K3s FAQ's it says that the new KXV3B Interface board has the new PR6-10 low-noise amplifier (LNA) as part of the circuitry. Further reading suggests that this board can replace the KXV3A board in the K3. I have not been able to find the "manual" yet as I suspect it is still being edited. I was just wondering if there were any other changes that needed to be made to accommodate the swap as this sounds like an excellent upgrade for the K3.Bill-W0BBI
> ______________________________________________________________
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Ross Primrose

Re: K3 Question on KXV3B

I assume the new beta firmware (or a later stable release) is required
to use the KXV3B in a K3 (no S)?

73, Ross N4RP

On 5/21/2015 10:42 AM, Wayne Burdick wrote:

> The addition of the low-noise amplifier for 12-6 meters is the only change. The module is compatible with either the K3 or K3S. The manual will be posted when it's complete.
>
> 73,
> Wayne
> N6KR
>
> On May 21, 2015, at 7:22 AM, Bill Wiehe via Elecraft <[hidden email]> wrote:
>
>> While reading the K3s FAQ's it says that the new KXV3B Interface board has the new PR6-10 low-noise amplifier (LNA) as part of the circuitry. Further reading suggests that this board can replace the KXV3A board in the K3. I have not been able to find the "manual" yet as I suspect it is still being edited. I was just wondering if there were any other changes that needed to be made to accommodate the swap as this sounds like an excellent upgrade for the K3.Bill-W0BBI
>> ______________________________________________________________
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Jim Low man

Re: K3 Question on KXV3B

In reply to this post by wayne burdick

So, I assume that those of us who own the external preamp, don't need
this new board?

73 de Jim - AD6CW

On 5/21/2015 7:42 AM, Wayne Burdick wrote:
> The addition of the low-noise amplifier for 12-6 meters is the only change. The module is compatible with either the K3 or K3S. The manual will be posted when it's complete.
>
> 73,
> Wayne
> N6KR
>
> On May 21, 2015, at 7:22 AM, Bill Wiehe via Elecraft <[hidden email]> wrote:
>
>

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Eric Swartz - WA6HHQ

Re: K3 Question on KXV3B

Administrator

In reply to this post by Ross Primrose

Yes, I believe.

Eric
/elecraft.com/

On 5/21/2015 7:55 AM, Ross Primrose wrote:

> I assume the new beta firmware (or a later stable release) is required to use
> the KXV3B in a K3 (no S)?
>
> 73, Ross N4RP
>
> On 5/21/2015 10:42 AM, Wayne Burdick wrote:
>> The addition of the low-noise amplifier for 12-6 meters is the only change.
>> The module is compatible with either the K3 or K3S. The manual will be posted
>> when it's complete.
>>
>> 73,
>> Wayne
>> N6KR
>>
>> On May 21, 2015, at 7:22 AM, Bill Wiehe via Elecraft
>> <[hidden email]> wrote:
>>
>>> While reading the K3s FAQ's it says that the new KXV3B Interface board has
>>> the new PR6-10 low-noise amplifier (LNA) as part of the circuitry. Further
>>> reading suggests that this board can replace the KXV3A board in the K3. I
>>> have not been able to find the "manual" yet as I suspect it is still being
>>> edited. I was just wondering if there were any other changes that needed to
>>> be made to accommodate the swap as this sounds like an excellent upgrade for
>>> the K3.Bill-W0BBI
>>> ______________________________________________________________
>>> 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]
>> ______________________________________________________________
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>
>

Eric Swartz - WA6HHQ

Re: K3 Question on KXV3B

Administrator

In reply to this post by Jim Low man

Correct.
73,
Eric
/elecraft.com/

On 5/21/2015 8:49 AM, Jim Lowman wrote:

> So, I assume that those of us who own the external preamp, don't need this new
> board?
>
> 73 de Jim - AD6CW
>
> On 5/21/2015 7:42 AM, Wayne Burdick wrote:
>> The addition of the low-noise amplifier for 12-6 meters is the only change.
>> The module is compatible with either the K3 or K3S. The manual will be posted
>> when it's complete.
>>
>> 73,
>> Wayne
>> N6KR
>>
>> On May 21, 2015, at 7:22 AM, Bill Wiehe via Elecraft
>> <[hidden email]> wrote:
>>
>>
>
> ______________________________________________________________
> Elecraft mailing list
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Elecraft mailing list

Re: K3 Question on KXV3B

In reply to this post by Eric Swartz - WA6HHQ

Thank you.Bill - W0BBI
From: "Eric Swartz - WA6HHQ, Elecraft" <[hidden email]>
To: Ross Primrose <[hidden email]>; Wayne Burdick <[hidden email]>; Bill Wiehe <[hidden email]>
Cc: Elecraft Reflector <[hidden email]>
Sent: Thursday, May 21, 2015 10:50 AM
Subject: Re: [Elecraft] K3 Question on KXV3B

Yes, I believe.

Eric
elecraft.com

On 5/21/2015 7:55 AM, Ross Primrose wrote:

I assume the new beta firmware (or a later stable release) is required to use the KXV3B in a K3 (no S)?

73, Ross N4RP

On 5/21/2015 10:42 AM, Wayne Burdick wrote:

The addition of the low-noise amplifier for 12-6 meters is the only change. The module is compatible with either the K3 or K3S. The manual will be posted when it's complete.

73,
Wayne
N6KR

On May 21, 2015, at 7:22 AM, Bill Wiehe via Elecraft <[hidden email]> wrote:

While reading the K3s FAQ's it says that the new KXV3B Interface board has the new PR6-10 low-noise amplifier (LNA) as part of the circuitry. Further reading suggests that this board can replace the KXV3A board in the K3. I have not been able to find the "manual" yet as I suspect it is still being edited. I was just wondering if there were any other changes that needed to be made to accommodate the swap as this sounds like an excellent upgrade for the K3.Bill-W0BBI
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N2TK

Re: K3 Question on KXV3B

In reply to this post by Eric Swartz - WA6HHQ

Does the preamp on the KXV3B replace the current preamp or is it in addition
to?
I assume it is in addition. How do you turn it on and off?
Tnx
N2TK, Tony

-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of Eric
Swartz - WA6HHQ, Elecraft
Sent: Thursday, May 21, 2015 12:12 PM
To: Jim Lowman; [hidden email]
Subject: Re: [Elecraft] K3 Question on KXV3B

Correct.
73,
Eric
/elecraft.com/

On 5/21/2015 8:49 AM, Jim Lowman wrote:
> So, I assume that those of us who own the external preamp, don't need
> this new board?
>
> 73 de Jim - AD6CW
>
> On 5/21/2015 7:42 AM, Wayne Burdick wrote:
>> The addition of the low-noise amplifier for 12-6 meters is the only
change.

>> The module is compatible with either the K3 or K3S. The manual will
>> be posted when it's complete.
>>
>> 73,
>> Wayne
>> N6KR
>>
>> On May 21, 2015, at 7:22 AM, Bill Wiehe via Elecraft
>> <[hidden email]> wrote:
>>
>>
>
> ______________________________________________________________
> 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]

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wayne burdick

Re: K3 Question on KXV3B

Administrator

On May 22, 2015, at 12:41 PM, "N2TK, Tony" <[hidden email]> wrote:

> Does the preamp on the KXV3B replace the current preamp or is it in addition
> to?
> I assume it is in addition. How do you turn it on and off?

Preamp 2, on the KXV3B, is in addition to the normal preamp (preamp 1). But firmware will only let you turn on one or the other -- not both. When preamp 2 is ON, it totally dominates the noise figure equation, so there's no value in also turning on preamp 1. Preamp 2 has a gain of 20 dB, while preamp 1 has a gain of 10 dB.

To turn preamp 2 ON, you first have to enable it on one or more of the applicable bands using the CONFIG:PREAMP2 menu entry. You can enable it on 12, 10, and 6 meters.

Once preamp 2 is enabled, tapping PRE cycles through OFF/PRE1/PRE2 on the applicable band. Other bands will only show OFF/PRE1.

When PRE2 is selected, the PRE icon flashes slowly as a reminder.

73,
Wayne
N6KR

> Tnx
> N2TK, Tony
>
> -----Original Message-----
> From: Elecraft [mailto:[hidden email]] On Behalf Of Eric
> Swartz - WA6HHQ, Elecraft
> Sent: Thursday, May 21, 2015 12:12 PM
> To: Jim Lowman; [hidden email]
> Subject: Re: [Elecraft] K3 Question on KXV3B
>
> Correct.
> 73,
> Eric
> /elecraft.com/
>
> On 5/21/2015 8:49 AM, Jim Lowman wrote:
>> So, I assume that those of us who own the external preamp, don't need
>> this new board?
>>
>> 73 de Jim - AD6CW
>>
>> On 5/21/2015 7:42 AM, Wayne Burdick wrote:
>>> The addition of the low-noise amplifier for 12-6 meters is the only
> change.
>>> The module is compatible with either the K3 or K3S. The manual will
>>> be posted when it's complete.
>>>
>>> 73,
>>> Wayne
>>> N6KR
>>>
>>> On May 21, 2015, at 7:22 AM, Bill Wiehe via Elecraft
>>> <[hidden email]> wrote:
>>>
>>>
>>
>> ______________________________________________________________
>> 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]
>
> ______________________________________________________________
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Ross Primrose

Re: K3 Question on KXV3B

I think you two might be talking across purposes. I got the impression
Tony meant the external 6 or 6/10m preamp....

73, Ross N4RP

On 5/22/2015 5:07 PM, Wayne Burdick wrote:

> On May 22, 2015, at 12:41 PM, "N2TK, Tony" <[hidden email]> wrote:
>
>> Does the preamp on the KXV3B replace the current preamp or is it in addition
>> to?
>> I assume it is in addition. How do you turn it on and off?
> Preamp 2, on the KXV3B, is in addition to the normal preamp (preamp 1). But firmware will only let you turn on one or the other -- not both. When preamp 2 is ON, it totally dominates the noise figure equation, so there's no value in also turning on preamp 1. Preamp 2 has a gain of 20 dB, while preamp 1 has a gain of 10 dB.
>
> To turn preamp 2 ON, you first have to enable it on one or more of the applicable bands using the CONFIG:PREAMP2 menu entry. You can enable it on 12, 10, and 6 meters.
>
> Once preamp 2 is enabled, tapping PRE cycles through OFF/PRE1/PRE2 on the applicable band. Other bands will only show OFF/PRE1.
>
> When PRE2 is selected, the PRE icon flashes slowly as a reminder.
>
> 73,
> Wayne
> N6KR
>
>
>
>> Tnx
>> N2TK, Tony
>>
>> -----Original Message-----
>> From: Elecraft [mailto:[hidden email]] On Behalf Of Eric
>> Swartz - WA6HHQ, Elecraft
>> Sent: Thursday, May 21, 2015 12:12 PM
>> To: Jim Lowman; [hidden email]
>> Subject: Re: [Elecraft] K3 Question on KXV3B
>>
>> Correct.
>> 73,
>> Eric
>> /elecraft.com/
>>
>> On 5/21/2015 8:49 AM, Jim Lowman wrote:
>>> So, I assume that those of us who own the external preamp, don't need
>>> this new board?
>>>
>>> 73 de Jim - AD6CW
>>>
>>> On 5/21/2015 7:42 AM, Wayne Burdick wrote:
>>>> The addition of the low-noise amplifier for 12-6 meters is the only
>> change.
>>>> The module is compatible with either the K3 or K3S. The manual will
>>>> be posted when it's complete.
>>>>
>>>> 73,
>>>> Wayne
>>>> N6KR
>>>>
>>>> On May 21, 2015, at 7:22 AM, Bill Wiehe via Elecraft
>>>> <[hidden email]> wrote:
>>>>
>>>>
>>> ______________________________________________________________
>>> 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]
>> ______________________________________________________________
>> 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]
>>
>> ______________________________________________________________
>> Elecraft mailing list
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> ______________________________________________________________
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N2TK

Re: K3 Question on KXV3B

In reply to this post by wayne burdick

Tnx Wayne.
Sounds good. That is a good way to operate it. I will have to order it for
both K3's. That is K3 without the "S". :-)

N2TK, Tony

-----Original Message-----
From: Wayne Burdick [mailto:[hidden email]]
Sent: Friday, May 22, 2015 5:08 PM
To: N2TK, Tony
Cc: [hidden email]
Subject: Re: [Elecraft] K3 Question on KXV3B

On May 22, 2015, at 12:41 PM, "N2TK, Tony" <[hidden email]> wrote:

> Does the preamp on the KXV3B replace the current preamp or is it in
> addition to?
> I assume it is in addition. How do you turn it on and off?

Preamp 2, on the KXV3B, is in addition to the normal preamp (preamp 1). But
firmware will only let you turn on one or the other -- not both. When preamp
2 is ON, it totally dominates the noise figure equation, so there's no value
in also turning on preamp 1. Preamp 2 has a gain of 20 dB, while preamp 1
has a gain of 10 dB.

To turn preamp 2 ON, you first have to enable it on one or more of the
applicable bands using the CONFIG:PREAMP2 menu entry. You can enable it on
12, 10, and 6 meters.

Once preamp 2 is enabled, tapping PRE cycles through OFF/PRE1/PRE2 on the
applicable band. Other bands will only show OFF/PRE1.

When PRE2 is selected, the PRE icon flashes slowly as a reminder.

73,
Wayne
N6KR

> Tnx
> N2TK, Tony
>
> -----Original Message-----
> From: Elecraft [mailto:[hidden email]] On Behalf Of
> Eric Swartz - WA6HHQ, Elecraft
> Sent: Thursday, May 21, 2015 12:12 PM
> To: Jim Lowman; [hidden email]
> Subject: Re: [Elecraft] K3 Question on KXV3B
>
> Correct.
> 73,
> Eric
> /elecraft.com/
>
> On 5/21/2015 8:49 AM, Jim Lowman wrote:
>> So, I assume that those of us who own the external preamp, don't need
>> this new board?
>>
>> 73 de Jim - AD6CW
>>
>> On 5/21/2015 7:42 AM, Wayne Burdick wrote:
>>> The addition of the low-noise amplifier for 12-6 meters is the only
> change.
>>> The module is compatible with either the K3 or K3S. The manual will
>>> be posted when it's complete.
>>>
>>> 73,
>>> Wayne
>>> N6KR
>>>
>>> On May 21, 2015, at 7:22 AM, Bill Wiehe via Elecraft
>>> <[hidden email]> wrote:
>>>
>>>
>>
>> ______________________________________________________________
>> 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]
>
> ______________________________________________________________
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N2TK

Re: K3 Question on KXV3B

In reply to this post by Ross Primrose

Hi Ross,
Nope. Wayne got it right as to what I was asking about.
I have one external 6/10M preamp now. Will replace with the internal KXV3B
for both K3's. Makes it cleaner. And I never use both preamps at the same
time anyways.

Have a great weekend.
N2TK, Tony

-----Original Message-----
From: Ross Primrose [mailto:[hidden email]]
Sent: Friday, May 22, 2015 5:13 PM
To: Wayne Burdick; N2TK, Tony
Cc: [hidden email]
Subject: Re: [Elecraft] K3 Question on KXV3B

I think you two might be talking across purposes. I got the impression Tony
meant the external 6 or 6/10m preamp....

73, Ross N4RP

On 5/22/2015 5:07 PM, Wayne Burdick wrote:
> On May 22, 2015, at 12:41 PM, "N2TK, Tony" <[hidden email]> wrote:
>
>> Does the preamp on the KXV3B replace the current preamp or is it in
>> addition to?
>> I assume it is in addition. How do you turn it on and off?
> Preamp 2, on the KXV3B, is in addition to the normal preamp (preamp 1).
But firmware will only let you turn on one or the other -- not both. When
preamp 2 is ON, it totally dominates the noise figure equation, so there's
no value in also turning on preamp 1. Preamp 2 has a gain of 20 dB, while
preamp 1 has a gain of 10 dB.
>
> To turn preamp 2 ON, you first have to enable it on one or more of the
applicable bands using the CONFIG:PREAMP2 menu entry. You can enable it on
12, 10, and 6 meters.
>
> Once preamp 2 is enabled, tapping PRE cycles through OFF/PRE1/PRE2 on the
applicable band. Other bands will only show OFF/PRE1.

>
> When PRE2 is selected, the PRE icon flashes slowly as a reminder.
>
> 73,
> Wayne
> N6KR
>
>
>
>> Tnx
>> N2TK, Tony
>>
>> -----Original Message-----
>> From: Elecraft [mailto:[hidden email]] On Behalf Of
>> Eric Swartz - WA6HHQ, Elecraft
>> Sent: Thursday, May 21, 2015 12:12 PM
>> To: Jim Lowman; [hidden email]
>> Subject: Re: [Elecraft] K3 Question on KXV3B
>>
>> Correct.
>> 73,
>> Eric
>> /elecraft.com/
>>
>> On 5/21/2015 8:49 AM, Jim Lowman wrote:
>>> So, I assume that those of us who own the external preamp, don't
>>> need this new board?
>>>
>>> 73 de Jim - AD6CW
>>>
>>> On 5/21/2015 7:42 AM, Wayne Burdick wrote:
>>>> The addition of the low-noise amplifier for 12-6 meters is the only
>> change.
>>>> The module is compatible with either the K3 or K3S. The manual will
>>>> be posted when it's complete.
>>>>
>>>> 73,
>>>> Wayne
>>>> N6KR
>>>>
>>>> On May 21, 2015, at 7:22 AM, Bill Wiehe via Elecraft
>>>> <[hidden email]> wrote:
>>>>
>>>>
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