[Elecraft] KX1 - Q4, Q5 resistance check

[Johnny Siu]

Hello Don,
Thanks, I discovered something interesting and making me laugh.
I switched the DMM from the 20k to 200k range and got the right resistance >10k.  The KX1 now delivers 4 W at 20m and 3 W at 40m according to my LP100A.  My next step is the construction of the KXB3080 module.
Thanks for your help.
73
Johnny VR2XMC
       寄件人︰ Don Wilhelm <w3fpr at embarqmail.com>
 收件人︰ Johnny Siu <vr2xmc at yahoo.com.hk>; "don at w3fpr.com" <don at w3fpr.com>; Elecraft <elecraft at mailman.qth.net> 
 傳送日期︰ 2014年12月1日 (週一) 2:28 AM
 主題︰ Re: [Elecraft] KX1 - Q4, Q5 resistance check
   
Johnny,

Those changes would not make a significant difference in the readings 
except for the Q6 base to ground measurement.

73,
Don W3FPR

On 11/30/2014 10:26 AM, Johnny Siu wrote:
> Hello Don,
> Thanks.  I was given an application note Rev B, April 2006.  The R11 and R30 were replaced by 4.7 ohm and 33 ohm respectively.
> I followed this note and replaced these two resistors instead of the values mentioned in KX1 Owner's Manual May 2010.
> Is this matter the resistance check?
> 73
> Johnny VR2XMC
>        寄件人︰ Don Wilhelm <w3fpr at embarqmail.com>
>  收件人︰ Johnny Siu <vr2xmc at yahoo.com.hk>; Elecraft <elecraft at mailman.qth.net>
>  傳送日期︰ 2014年11月30日 (週日) 10:24 PM
>  主題︰ Re: [Elecraft] KX1 - Q4, Q5 resistance check
>    
> Johnny,
>
> That is too low.  Check the value of R24, R9, R27, R11 and R10. Check
> carefully for any solder bridges.
> You might also want to try new batteries in your DMM and try reversing
> the leads on your DMM just in case its polarity is reversed from normal.
>
> 73,
> Don W3FPR
>
>
>
> On 11/30/2014 9:11 AM, Johnny Siu wrote:
>> Hello KX1 builders,
>> The construction of KX1 runs all ok up to page 54.  However, the resistance check for Q4 base and collector, Q5 base only give 5.6k resistance towards ground instead of >10k as mentioned in the manual.
>> Please advise whether this is still ok.  I would like to make sure that before going to alignment & test - part III.
>> 73
>> Johnny VR2XMC
>>
>
>
>    
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