[Elecraft] Getting ready to order a K2 - which options

[Don Wilhelm]

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
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