[Elecraft] KX1 build with 8030 mod

[Don Wilhelm]

I forgot one item in my list.  Please add the following:
2a)   Do the first 3 steps from page 5 of the KXB3080 manual (cut the PC 
trace and add the wire).

Sorry - I have added it to the list below for anyone who wants a 
complete set of steps.

73,
Don W3FPR

Don Wilhelm wrote:
> Yes, it can be done - I do that all the time, but then I have done 
> many many of these kits and know where to look when something goes 
> wrong.  Unfortunately, you likely do not have that background with the 
> KX1.
>
> If you attempt to do everything together, there is no opportunity to 
> give it the interim tests.
>
> The most 'tricky' part of the KXB3080 is the low pass filter, and that 
> is where most builders run into problems (other than the tinning of 
> T2's leads).  For that reason I strongly recommend that you do *not* 
> install the LPF for the KXB3080 until after you have tested it with 
> the rest of the KXB3080 parts installed.  Yes, you will have to wind 
> and install L1 and L2 as instructed in the KX1 basic manual.
>
> One way you could proceed which does allow interim testing is as follows:
> 1) Build the KX1 through Assembly Part II the per the manual except 
> that you would not install L7. C1, C27 nor C26, and L6 would be 
> installed on the bottom of the board.
> 2) Install C1 and C26 from the KXB3080 option, then wind and install 
> T2 per the KXB3080 manual.
2a)   Do the first 3 steps from page 5 of the KXB3080 manual (cut the PC 
trace and add the wire).
>
> 3) The KX1 can now be aligned and tested for receive on 20 and 40 
> meters.  Complete Alignment and Test part II.
> 4) Build the transmit portion of the KX1 using the KX1 manual Assembly 
> Part III.
> 5) Test the KX1 transmit on 20 and 40 per the manual Alignment and 
> test part III.  Your KX1 has now been tested for both transmit and 
> receive on 20 and 40 meters.
> 6) Start in the KXB3080 manual at page 8 (Part II) and complete the 
> rest of the steps in that manual.  This will test your KX1 on all 4 
> bands.
> 7) Go back to the KX1 manual and complete the final assembly.
>
> One extra note:  The positioning of the KXB3080 LPF requires clearance 
> for the tuner components.  It is a good idea to build and install the 
> tuner between steps 5 and 6 above.
>
> If you have great faith in your construction and troubleshooting 
> ability, then feel free to just dive in and 'do it', but I would not 
> suggest that unless you have already done one or two of these.
>
> 73,
> Don W3FPR
>
>
> David Dolsen wrote:
>> GM DE VE7TTJ
>>
>> I have purchased a KX1 kit along with the 8030 board and ATU kit. I 
>> want to do initial assembly incorporating the 8030 board (why put 
>> things in just to take them out?) I have built five other single-band 
>> rigs over the years so it's not a skill-testing question, just 
>> wondering if there are any gremlins I can't spot in blending the two 
>> sets of instructions. The ATU appears to be just a matter of pulling 
>> jumpers out of the female sockets to make way for the pins. It's the 
>> business of not installing L1 and L2 off the top and various Cap 
>> changes that makes me ask if it's better to make friends with 
>> desoldering wick instead. Comments?
>>
>>  PM
>>   
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