[Elecraft] KRX-3 R-19

[Don Wilhelm]

Steve,

I believe you meant R91.

This resistor is *only* to be added if the measured value of R91 is 
about 100 ohms.  Many later K3s already have it changed to 22 ohms, and 
on those the resistor should *not* be added.  The KRX3 manual makes it 
clear that one should measure R19 with a DMM and add the 27 ohm resistor 
only if the measured value is in the vicinity of 100 ohms. 

Elecraft's instruction manuals are written to cover installation in all 
K3s no matter whether early or late serial numbers.  I believe the DMM 
check method is a more reliable way of determining whether the resistor 
needs to be added than any reference to a serial number.

As an added trivia note - Elecraft does not use dashes in either product 
numbers or part designations.
That is left for the manufacturers who want to bring out an updated 
version of the radio with a different model number.  Elecraft radios are 
fully upgradable for the entire life of the product and upgrade kits are 
provided.  As a result, there is no such animal as a KRX-3 or R-19 in 
the Elecraft world.  The only exceptions are the N-gen and 2T-gen mini 
modules.  I  believe those were named by someone other than Wayne or Eric.

73,
Don W3FPR

W0SZ wrote:
> I was wondering if anyone knows if R-19 will need to be modified in 
> all K-3s or is there a serial number where the value for R-19 was 
> changed.  Also would it be possible to change the Surface Mounted 
> resistor for the correct value rather than add the old through the 
> hole 1/4 watt resistor?  Thanks and 73, Steve W0SZ
>