[Elecraft] Resistance checks on RF board page 38

[Don Wilhelm]

Mike.

Try reversing your DMM probes and see if that makes any difference.

My immediate reaction is to say that you may have soldering connections 
that are not good.  Inspect the soldering with a critical eye.  Any 
joints where the solder did not flow completely out onto the solder pad 
are suspect, and may be a result of too cold an iron or not enough dwell 
time on the connection.  You should see the solder flow out onto both 
the pad and the component lead to almost an invisible edge line in 3 
seconds.  If it does not do that, then the iron is too cold.  You will 
not hurt modern components with a soldering temperature of 759 degF for 
a time of 5 seconds or less.

73,
Don W3FPR

On 5/10/2013 9:02 PM, Mike Weir wrote:
> Good evening all, just making my way through the K2 build and had was wondering about some resistance check results. On R115 and U1 pins 4,9,10,28 I am getting readings in the range of 3.9 mega ohms to 5.4 mega ohms. The results sheet advise of results in and around 20k. In the past I have found that the measured amount was somewhat close to the expected manual. To me it just seems a bit high when you are to see greater than 20K and the measured amount is in the Mega ohms....is this normal?The last measurement question I have is for R1 and R2. I have to see 1mega ohm or more and my Fluke is just reading OL....is this what I am looking for?The only "normal" reading in this check out to me is U1 pin 1 which comes in at 4.85K Thanks for your timeMikehttp://elecraftk2.blogspot.ca/
>
> Exact readings I am gettingR115          9.57mega ohmsU1Pin 4           3.9 mega ohmsPin 9            4.8 "                 "Pin 10          4.7 "                 "Pin 28           5.4 "                "
>