Pippo,
The exact value of R20 is not so critical, although all the datasheet
typical applications use 2.7 ohms. I would suggest that you use the
resistor supplied.
You may also want to check the accuracy of your DMM when measuring small
resistance values. Some meters provide for a zeroing adjustment to
compensate for probe resistance. A loose fitting probe could cause
errors when measuring very low resistances.
As a sanity check for your meter, measure the 1/2 watt resistor on the
RF Board resistor strip, it should measure close to 1.5 ohms.
73,
Don W3FPR
On 10/4/2010 7:58 AM, IZ2NYY wrote:
> Hy to all, installing the resistor R20 on the control board i checked, as usual, the value before soldering. It should have a value of 2.7 ohm with 5% tolarance, but the resistor in my kit is 3.2 ohm (the color code is respected for the 2.7 value). Could it be problem so that it's better i replace it with a more accurate value???
>
> Thanks for replies
>
> Pippo
> IZ2NYY
>
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