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Getting ready to order a K2 - which options

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Burke Jones

Getting ready to order a K2 - which options

I am getting ready to put in an order for a K2 kit. I currently have the
KX1, which is my only rig. I want something more substantial at home to
sit on the desktop and have fun with.

I am definitely getting the SSB option - mainly because I want to do some
of the digital modes.

I don't want to do the battery or internal tuner at this time (might make
good Christmas presents down the line).

What other options should I consider and why?

Burke Jones
N0HYD
http://www.N0HYD.com
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Peter Wollan-2

Re: Getting ready to order a K2 - which options

The ATU, in addition to ATUing, adds a second antenna socket. The
160/RXant option adds 160 meters and an RX antenna socket, along with the
firmware to receive on the RX ant and automatically transmit on another.

Some find the noise blanker to be important.

Peter W0LLN

On Thursday, September 13, 2012, Burke Jones wrote:

> I am getting ready to put in an order for a K2 kit. I currently have the
> KX1, which is my only rig. I want something more substantial at home to
> sit on the desktop and have fun with.
>
> I am definitely getting the SSB option - mainly because I want to do some
> of the digital modes.
>
> I don't want to do the battery or internal tuner at this time (might make
> good Christmas presents down the line).
>
> What other options should I consider and why?
>
> Burke Jones
> N0HYD
> http://www.N0HYD.com
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email] <javascript:;>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

Don Wilhelm-4

Re: Getting ready to order a K2 - which options

In reply to this post by Burke Jones

Burke,

It depends on what you want to accomplish with your K2.
Yes, the KSB2 will allow you to use digital modes - the K2 also has a
3rd set of filters that can be set up called the RTTY filter set (turn
it on or off in the secondary menu).
The K160RX adds a receive antenna and the 160 meter band. The K60XV
option adds 60 meters and a transverter interface.
The KAF2 adds a peaked audio filter that is very nice for CW.
The KDSP2 (which goes in the same place as the KAF2 - you can't have
both) adds audio DSP to provide brick wall selectivity as well as Noise
Reduction.
The KNB2 works well with impulse noise (like auto ignition noise) if
that is a problem at your location.
The KIO2 allows you to control the K2 from a computer or use an
automated logger.

That is the list unless you want to consider the internal battery or the
tuner or the KPA100

73,
Don W3FPR

On 9/13/2012 3:22 PM, Burke Jones wrote:

> I am getting ready to put in an order for a K2 kit. I currently have the
> KX1, which is my only rig. I want something more substantial at home to
> sit on the desktop and have fun with.
>
> I am definitely getting the SSB option - mainly because I want to do some
> of the digital modes.
>
> I don't want to do the battery or internal tuner at this time (might make
> good Christmas presents down the line).
>
> What other options should I consider and why?
>
> Burke Jones
> N0HYD
> http://www.N0HYD.com
> ______________________________________________________________
> 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
>

Curt

Re: Getting ready to order a K2 - which options

In reply to this post by Burke Jones

I built mine with no options, later added the KSB2 board.
Have never missed having other options, though may soon build the KPA100.

Suggest building what you've mentioned and using it for awhile.

You'll have more than enough solder melting to complete what you've mentioned.

GL & 73, Curt KB5JO
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N0AZZ

Re: Getting ready to order a K2 - which options

In reply to this post by Don Wilhelm-4

If this your only base rig I would order the KPA100 that will give you a lot
of operating options with the added wattage and still turn down to QRP if
you want I do so with mine quit often. The KAT100 is a very nice tuner and
tunes high SWR loads I prefer the external enclosure on mine.

One thing I would suggest "strongly" is to consult with Don and ask him to
advise you of the options and the order of installation as some can be done
during the build. Otherwise you will disassemble much of the radio to
install some of the options. On the other hand some are easily done after
the build is completed at any time. JMHO

73,
Fred/N0AZZ

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Don Wilhelm
Sent: Thursday, September 13, 2012 2:40 PM
To: Burke Jones
Cc: [hidden email]
Subject: Re: [Elecraft] Getting ready to order a K2 - which options

Burke,

It depends on what you want to accomplish with your K2.
Yes, the KSB2 will allow you to use digital modes - the K2 also has a 3rd
set of filters that can be set up called the RTTY filter set (turn it on or
off in the secondary menu).
The K160RX adds a receive antenna and the 160 meter band. The K60XV option
adds 60 meters and a transverter interface.
The KAF2 adds a peaked audio filter that is very nice for CW.
The KDSP2 (which goes in the same place as the KAF2 - you can't have
both) adds audio DSP to provide brick wall selectivity as well as Noise
Reduction.
The KNB2 works well with impulse noise (like auto ignition noise) if that is
a problem at your location.
The KIO2 allows you to control the K2 from a computer or use an automated
logger.

That is the list unless you want to consider the internal battery or the
tuner or the KPA100

73,
Don W3FPR

On 9/13/2012 3:22 PM, Burke Jones wrote:

> I am getting ready to put in an order for a K2 kit. I currently have
> the KX1, which is my only rig. I want something more substantial at
> home to sit on the desktop and have fun with.
>
> I am definitely getting the SSB option - mainly because I want to do
> some of the digital modes.
>
> I don't want to do the battery or internal tuner at this time (might
> make good Christmas presents down the line).
>
> What other options should I consider and why?
>
> Burke Jones
> N0HYD
> http://www.N0HYD.com
> ______________________________________________________________
> 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
>

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Wayne Conrad

Re: Getting ready to order a K2 - which options

On 09/14/12 02:19, Fred Smith wrote:
> One thing I would suggest "strongly" is to consult with Don and ask him to
> advise you of the options and the order of installation as some can be done
> during the build. Otherwise you will disassemble much of the radio to
> install some of the options. On the other hand some are easily done after
> the build is completed at any time. JMHO

I'd suggest the "Rework Eliminiator" K2 Option Bypass Headers:

http://www.eham.net/reviews/detail/6372

They work very well. You build the option bypass headers, and then when
you build your K2, you build it as though you are installing every
option. Many options require that you remove a component or two from
the main board, so you just don't install those components at all during
the build. For the options you don't actually install, plug in the
option bypass header. Later, when you add an option, simply unplug the
bypass header and plug in the option.

73, Wayne Conrad KF7QGA
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RobertG

Re: Getting ready to order a K2 - which options

I second this suggestion. When I built my K2 I used the "Rework Eliminators." Using
them doesn't impede normal construction of the K2, and later, when new modules are
added, they/it makes the addition(s) so very much easier. Strong recommendation.

...robert

On 9/14/2012 16:30, Wayne Conrad wrote:

> On 09/14/12 02:19, Fred Smith wrote:
>> One thing I would suggest "strongly" is to consult with Don and ask him to
>> advise you of the options and the order of installation as some can be done
>> during the build. Otherwise you will disassemble much of the radio to
>> install some of the options. On the other hand some are easily done after
>> the build is completed at any time. JMHO
>
> I'd suggest the "Rework Eliminiator" K2 Option Bypass Headers:
>
> http://www.eham.net/reviews/detail/6372
>
> They work very well. You build the option bypass headers, and then when
> you build your K2, you build it as though you are installing every
> option. Many options require that you remove a component or two from
> the main board, so you just don't install those components at all during
> the build. For the options you don't actually install, plug in the
> option bypass header. Later, when you add an option, simply unplug the
> bypass header and plug in the option.
>
> 73, Wayne Conrad KF7QGA
> ______________________________________________________________
> 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
>

--
Robert G. Strickland, PhD, ABPH - KE2WY
[hidden email]
Syracuse, New York, USA
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ke9uw

Re: Getting ready to order a K2 - which options

I incorporated all the add-ons as I built the K2. But I did but the rework kit later...a must have for future issues if necessary.

Sent from my iPad

On Sep 14, 2012, at 11:46 AM, "Robert G. Strickland" <[hidden email]> wrote:

> I second this suggestion. When I built my K2 I used the "Rework Eliminators." Using
> them doesn't impede normal construction of the K2, and later, when new modules are
> added, they/it makes the addition(s) so very much easier. Strong recommendation.
>
> ...robert
>
> On 9/14/2012 16:30, Wayne Conrad wrote:
>> On 09/14/12 02:19, Fred Smith wrote:
>>> One thing I would suggest "strongly" is to consult with Don and ask him to
>>> advise you of the options and the order of installation as some can be done
>>> during the build. Otherwise you will disassemble much of the radio to
>>> install some of the options. On the other hand some are easily done after
>>> the build is completed at any time. JMHO
>>
>> I'd suggest the "Rework Eliminiator" K2 Option Bypass Headers:
>>
>> http://www.eham.net/reviews/detail/6372
>>
>> They work very well. You build the option bypass headers, and then when
>> you build your K2, you build it as though you are installing every
>> option. Many options require that you remove a component or two from
>> the main board, so you just don't install those components at all during
>> the build. For the options you don't actually install, plug in the
>> option bypass header. Later, when you add an option, simply unplug the
>> bypass header and plug in the option.
>>
>> 73, Wayne Conrad KF7QGA
>> ______________________________________________________________
>> 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
>>
>
> --
> Robert G. Strickland, PhD, ABPH - KE2WY
> [hidden email]
> Syracuse, New York, USA
> ______________________________________________________________
> 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

Chuck, KE9UW

Don Wilhelm-4

Re: Getting ready to order a K2 - which options

In reply to this post by Wayne Conrad

If you do use the "Rework Eliminators" (or often called "unPCBs") I
recommend you do *NOT* install the one for the K60XV - wait until you
actually have the K60XV option in hand.

Why you may ask - well, the change of the C71 value modifies the PLL
voltage range drastically. With the K60XV installed, the lowest voltage
which must be adjusted for occurs at 5300 kHz, and if one does not have
the K60XV in place, the K2 will not tune to the 60 meter band - so you
have to guess about the low voltage point, and remember to revisit it
when you do put the K60XV option in.

It might be OK to install the headers, add the coax on the bottom of the
board and install D19 and D20, but do not change C71 until it is time to
install the K60XV.

I just worked on a K2 that was sent in for repair because the owner did
not know to turn the D19 menu parameter to "y" - the rework eliminators
had been installed and he did not know that either (he had just bought
the K2). So he endured the cost of repair and shipping just because of
a simple menu entry - don' change C71 until you have the K60XV in hand.

73,
Don W3FPR

On 9/14/2012 12:30 PM, Wayne Conrad wrote:

> On 09/14/12 02:19, Fred Smith wrote:
>> One thing I would suggest "strongly" is to consult with Don and ask him to
>> advise you of the options and the order of installation as some can be done
>> during the build. Otherwise you will disassemble much of the radio to
>> install some of the options. On the other hand some are easily done after
>> the build is completed at any time. JMHO
> I'd suggest the "Rework Eliminiator" K2 Option Bypass Headers:
>
> http://www.eham.net/reviews/detail/6372
>
> They work very well. You build the option bypass headers, and then when
> you build your K2, you build it as though you are installing every
> option. Many options require that you remove a component or two from
> the main board, so you just don't install those components at all during
> the build. For the options you don't actually install, plug in the
> option bypass header. Later, when you add an option, simply unplug the
> bypass header and plug in the option.
>
> 73, Wayne Conrad KF7QGA
> ______________________________________________________________
> 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
>

Johnny Siu

Getting ready to order a K2 - which options

Completely on the contrary, I always don't feel the "Rework Eliminiator" is necessary. Installation or rework of most of the K2 options is NO more difficult than the K2 itself's construction. Taking KSB2 or , KAF2 and KNB2 as examples, after you take out option, you could easily revert to basic K2 by adding a few jumpers or one / two components.

In the construction of over ten K2 in the past, I never felt the need of the rework eliminiator. Currently, I am working on turning an early version K2 into latest version.

TNX & 73,

Johnny VR2XMC

________________________________
寄件人︰ Don Wilhelm <[hidden email]>
收件人︰ [hidden email]
傳送日期︰ 2012年09月15日 (週六) 1:48 AM
主題︰ Re: [Elecraft] Getting ready to order a K2 - which options

If you do use the "Rework Eliminators" (or often called "unPCBs") I
recommend you do *NOT* install the one for the K60XV - wait until you
actually have the K60XV option in hand.

Why you may ask - well, the change of the C71 value modifies the PLL
voltage range drastically. With the K60XV installed, the lowest voltage
which must be adjusted for occurs at 5300 kHz, and if one does not have
the K60XV in place, the K2 will not tune to the 60 meter band - so you
have to guess about the low voltage point, and remember to revisit it
when you do put the K60XV option in.

It might be OK to install the headers, add the coax on the bottom of the
board and install D19 and D20, but do not change C71 until it is time to
install the K60XV.

I just worked on a K2 that was sent in for repair because the owner did
not know to turn the D19 menu parameter to "y" - the rework eliminators
had been installed and he did not know that either (he had just bought
the K2). So he endured the cost of repair and shipping just because of
a simple menu entry - don' change C71 until you have the K60XV in hand.

73,
Don W3FPR

On 9/14/2012 12:30 PM, Wayne Conrad wrote:

> On 09/14/12 02:19, Fred Smith wrote:
>> One thing I would suggest "strongly" is to consult with Don and ask him to
>> advise you of the options and the order of installation as some can be done
>> during the build. Otherwise you will disassemble much of the radio to
>> install some of the options. On the other hand some are easily done after
>> the build is completed at any time. JMHO
> I'd suggest the "Rework Eliminiator" K2 Option Bypass Headers:
>
> http://www.eham.net/reviews/detail/6372
>
> They work very well. You build the option bypass headers, and then when
> you build your K2, you build it as though you are installing every
> option. Many options require that you remove a component or two from
> the main board, so you just don't install those components at all during
> the build. For the options you don't actually install, plug in the
> option bypass header. Later, when you add an option, simply unplug the
> bypass header and plug in the option.
>
> 73, Wayne Conrad KF7QGA
> ______________________________________________________________
> 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
>

______________________________________________________________
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Post: mailto:[hidden email]

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______________________________________________________________
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Bill Tubbs, WK6A

Re: Getting ready to order a K2 - which options

This thread is the first I've heard of this rework eliminator. It sounds interesting but I can't imagine that working on K2 upgrades is that daunting, is it? Granted, I didn't build my used K2 but all I've heard is that the process is very straightforward with Elecraft's excellent instructions.

I'm about to upgrade my early model to the latest version myself, and was going to just plow through the stages one by one (I already have all the upgrade parts). Would there be any advantage to this rework eliminator at this stage or is that designed for upgrades "to be done at a later date"?

Bill
WK6A

Sent from my iPhone

On Sep 14, 2012, at 6:24 PM, Johnny Siu <[hidden email]> wrote:

> Completely on the contrary, I always don't feel the "Rework Eliminiator" is necessary. Installation or rework of most of the K2 options is NO more difficult than the K2 itself's construction. Taking KSB2 or , KAF2 and KNB2 as examples, after you take out option, you could easily revert to basic K2 by adding a few jumpers or one / two components.
>
> In the construction of over ten K2 in the past, I never felt the need of the rework eliminiator. Currently, I am working on turning an early version K2 into latest version.
>
> TNX & 73,
>
>
> Johnny VR2XMC
>
>
> ________________________________
> 寄件人︰ Don Wilhelm <[hidden email]>
> 收件人︰ [hidden email]
> 傳送日期︰ 2012年09月15日 (週六) 1:48 AM
> 主題︰ Re: [Elecraft] Getting ready to order a K2 - which options
>
> If you do use the "Rework Eliminators" (or often called "unPCBs") I
> recommend you do *NOT* install the one for the K60XV - wait until you
> actually have the K60XV option in hand.
>
> Why you may ask - well, the change of the C71 value modifies the PLL
> voltage range drastically. With the K60XV installed, the lowest voltage
> which must be adjusted for occurs at 5300 kHz, and if one does not have
> the K60XV in place, the K2 will not tune to the 60 meter band - so you
> have to guess about the low voltage point, and remember to revisit it
> when you do put the K60XV option in.
>
> It might be OK to install the headers, add the coax on the bottom of the
> board and install D19 and D20, but do not change C71 until it is time to
> install the K60XV.
>
> I just worked on a K2 that was sent in for repair because the owner did
> not know to turn the D19 menu parameter to "y" - the rework eliminators
> had been installed and he did not know that either (he had just bought
> the K2). So he endured the cost of repair and shipping just because of
> a simple menu entry - don' change C71 until you have the K60XV in hand.
>
> 73,
> Don W3FPR
>
>
> On 9/14/2012 12:30 PM, Wayne Conrad wrote:
>> On 09/14/12 02:19, Fred Smith wrote:
>>> One thing I would suggest "strongly" is to consult with Don and ask him to
>>> advise you of the options and the order of installation as some can be done
>>> during the build. Otherwise you will disassemble much of the radio to
>>> install some of the options. On the other hand some are easily done after
>>> the build is completed at any time. JMHO
>> I'd suggest the "Rework Eliminiator" K2 Option Bypass Headers:
>>
>> http://www.eham.net/reviews/detail/6372
>>
>> They work very well. You build the option bypass headers, and then when
>> you build your K2, you build it as though you are installing every
>> option. Many options require that you remove a component or two from
>> the main board, so you just don't install those components at all during
>> the build. For the options you don't actually install, plug in the
>> option bypass header. Later, when you add an option, simply unplug the
>> bypass header and plug in the option.
>>
>> 73, Wayne Conrad KF7QGA
>> ______________________________________________________________
>> 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
>>
>
> ______________________________________________________________
> 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
> ______________________________________________________________
> 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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Johnny Siu

Getting ready to order a K2 - which options

Hello Bill,

I still carry the view that the rework eliminator is not necessary. Elecraft's instruction in how to upgrade earlier K2 is well written:

http://www.elecraft.com/order_form_parts.htm#K2 Parts

If you have any problems, please send your email to [hidden email] Your questions will be well handled by elecraft.

TNX & 73,

Johnny VR2XMC

________________________________
寄件人︰ Bill Tubbs <[hidden email]>
收件人︰ "[hidden email]" <[hidden email]>
傳送日期︰ 2012年09月15日 (週六) 1:21 PM
主題︰ Re: [Elecraft] Getting ready to order a K2 - which options

This thread is the first I've heard of this rework eliminator. It sounds interesting but I can't imagine that working on K2 upgrades is that daunting, is it? Granted, I didn't build my used K2 but all I've heard is that the process is very straightforward with Elecraft's excellent instructions.

I'm about to upgrade my early model to the latest version myself, and was going to just plow through the stages one by one (I already have all the upgrade parts). Would there be any advantage to this rework eliminator at this stage or is that designed for upgrades "to be done at a later date"?

Bill
WK6A

Sent from my iPhone

On Sep 14, 2012, at 6:24 PM, Johnny Siu <[hidden email]> wrote:

> Completely on the contrary, I always don't feel the "Rework Eliminiator" is necessary. Installation or rework of most of the K2 options is NO more difficult than the K2 itself's construction. Taking KSB2 or , KAF2 and KNB2 as examples, after you take out option, you could easily revert to basic K2 by adding a few jumpers or one / two components.
>
> In the construction of over ten K2 in the past, I never felt the need of the rework eliminiator. Currently, I am working on turning an early version K2 into latest version.
>
> TNX & 73,
>
>
> Johnny VR2XMC
>
>
> ________________________________
> 寄件人︰ Don Wilhelm <[hidden email]>
> 收件人︰ [hidden email]
> 傳送日期︰ 2012年09月15日 (週六) 1:48 AM
> 主題︰ Re: [Elecraft] Getting ready to order a K2 - which options
>
> If you do use the "Rework Eliminators" (or often called "unPCBs") I
> recommend you do *NOT* install the one for the K60XV - wait until you
> actually have the K60XV option in hand.
>
> Why you may ask - well, the change of the C71 value modifies the PLL
> voltage range drastically. With the K60XV installed, the lowest voltage
> which must be adjusted for occurs at 5300 kHz, and if one does not have
> the K60XV in place, the K2 will not tune to the 60 meter band - so you
> have to guess about the low voltage point, and remember to revisit it
> when you do put the K60XV option in.
>
> It might be OK to install the headers, add the coax on the bottom of the
> board and install D19 and D20, but do not change C71 until it is time to
> install the K60XV.
>
> I just worked on a K2 that was sent in for repair because the owner did
> not know to turn the D19 menu parameter to "y" - the rework eliminators
> had been installed and he did not know that either (he had just bought
> the K2). So he endured the cost of repair and shipping just because of
> a simple menu entry - don' change C71 until you have the K60XV in hand.
>
> 73,
> Don W3FPR
>
>
> On 9/14/2012 12:30 PM, Wayne Conrad wrote:
>> On 09/14/12 02:19, Fred Smith wrote:
>>> One thing I would suggest "strongly" is to consult with Don and ask him to
>>> advise you of the options and the order of installation as some can be done
>>> during the build. Otherwise you will disassemble much of the radio to
>>> install some of the options. On the other hand some are easily done after
>>> the build is completed at any time. JMHO
>> I'd suggest the "Rework Eliminiator" K2 Option Bypass Headers:
>>
>> http://www.eham.net/reviews/detail/6372
>>
>> They work very well. You build the option bypass headers, and then when
>> you build your K2, you build it as though you are installing every
>> option. Many options require that you remove a component or two from
>> the main board, so you just don't install those components at all during
>> the build. For the options you don't actually install, plug in the
>> option bypass header. Later, when you add an option, simply unplug the
>> bypass header and plug in the option.
>>
>> 73, Wayne Conrad KF7QGA
>> ______________________________________________________________
>> 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
>>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>
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> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
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>
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Don Wilhelm-4

Re: Getting ready to order a K2 - which options

In reply to this post by Bill Tubbs, WK6A

Bill,

Ask yourself how many additional options are you going to add to that
K2. If the answer is none or few, forget the Rework Eliminators, they
are a waste of your time and money.

The Rework Eliminators only make sense on a new K2 build when you are
undecided about the option set that you want, or want to do a basic K2
build now and order the options later.

73,
Don W3FPR

On 9/15/2012 1:21 AM, Bill Tubbs wrote:

> This thread is the first I've heard of this rework eliminator. It sounds interesting but I can't imagine that working on K2 upgrades is that daunting, is it? Granted, I didn't build my used K2 but all I've heard is that the process is very straightforward with Elecraft's excellent instructions.
>
> I'm about to upgrade my early model to the latest version myself, and was going to just plow through the stages one by one (I already have all the upgrade parts). Would there be any advantage to this rework eliminator at this stage or is that designed for upgrades "to be done at a later date"?
>
> Bill
> WK6A
>
> Sent from my iPhone
>
> On Sep 14, 2012, at 6:24 PM, Johnny Siu <[hidden email]> wrote:
>
>> Completely on the contrary, I always don't feel the "Rework Eliminiator" is necessary. Installation or rework of most of the K2 options is NO more difficult than the K2 itself's construction. Taking KSB2 or , KAF2 and KNB2 as examples, after you take out option, you could easily revert to basic K2 by adding a few jumpers or one / two components.
>>
>> In the construction of over ten K2 in the past, I never felt the need of the rework eliminiator. Currently, I am working on turning an early version K2 into latest version.
>>
>> TNX & 73,
>>
>>
>> Johnny VR2XMC
>>
>>
>> ________________________________
>> 寄件人︰ Don Wilhelm <[hidden email]>
>> 收件人︰ [hidden email]
>> 傳送日期︰ 2012年09月15日 (週六) 1:48 AM
>> 主題︰ Re: [Elecraft] Getting ready to order a K2 - which options
>>
>> If you do use the "Rework Eliminators" (or often called "unPCBs") I
>> recommend you do *NOT* install the one for the K60XV - wait until you
>> actually have the K60XV option in hand.
>>
>> Why you may ask - well, the change of the C71 value modifies the PLL
>> voltage range drastically. With the K60XV installed, the lowest voltage
>> which must be adjusted for occurs at 5300 kHz, and if one does not have
>> the K60XV in place, the K2 will not tune to the 60 meter band - so you
>> have to guess about the low voltage point, and remember to revisit it
>> when you do put the K60XV option in.
>>
>> It might be OK to install the headers, add the coax on the bottom of the
>> board and install D19 and D20, but do not change C71 until it is time to
>> install the K60XV.
>>
>> I just worked on a K2 that was sent in for repair because the owner did
>> not know to turn the D19 menu parameter to "y" - the rework eliminators
>> had been installed and he did not know that either (he had just bought
>> the K2). So he endured the cost of repair and shipping just because of
>> a simple menu entry - don' change C71 until you have the K60XV in hand.
>>
>> 73,
>> Don W3FPR
>>
>>
>> On 9/14/2012 12:30 PM, Wayne Conrad wrote:
>>> On 09/14/12 02:19, Fred Smith wrote:
>>>> One thing I would suggest "strongly" is to consult with Don and ask him to
>>>> advise you of the options and the order of installation as some can be done
>>>> during the build. Otherwise you will disassemble much of the radio to
>>>> install some of the options. On the other hand some are easily done after
>>>> the build is completed at any time. JMHO
>>> I'd suggest the "Rework Eliminiator" K2 Option Bypass Headers:
>>>
>>> http://www.eham.net/reviews/detail/6372
>>>
>>> They work very well. You build the option bypass headers, and then when
>>> you build your K2, you build it as though you are installing every
>>> option. Many options require that you remove a component or two from
>>> the main board, so you just don't install those components at all during
>>> the build. For the options you don't actually install, plug in the
>>> option bypass header. Later, when you add an option, simply unplug the
>>> bypass header and plug in the option.
>>>
>>> 73, Wayne Conrad KF7QGA
>>> ______________________________________________________________
>>> 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
>>>
>> ______________________________________________________________
>> 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
>> ______________________________________________________________
>> 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
> ______________________________________________________________
> 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

K1FFX

Re: Getting ready to order a K2 - which options

If I were to do do a new K2 build again, I would definitely incorporate the Rework Eliminator kit
in the initial build. I added two options to the basic K2: (1) the KPA100, which required (IMHO
anyway) an annoying dissasembly of the K2 to add two connectors to the main board and (2)
the KSB2, which should have been an easy add on, but I had difficulty, even using desoldering
braid, in removing main board jumpers. So, if I had known about the Rework Eliminator kit
and what was involved in adding options, I would have incorporated it in the initial build, even
for just those two options.

But I agree that it probably wouldn't make sense to retrofit the kit into an existing K2.

- Bruce

Bruce Rosen
K1FFX
K2/100 6982 KSB2 KAT100-1 KAF2 KIO2