[Elecraft] [MM] XG1 signal problem

[Guy Olinger K2AV]

Check to make sure you haven't transmitted into the XG1 and blown the
safety diode. You can easily remove it to see.

On Mon, Nov 23, 2009 at 4:40 PM, Brian - N5BCN <n5bcn at yahoo.com> wrote:
>
> Hello all,
>
> When attempting to calibrate my K2's S-meter with a XG1, I discovered the
> XG1 itself is having a problem.  I verified this by connecting it to a
> working IC-7600.
>
> The signal output on it, although heard, is very weak.  Adjusted for
> on-frequency, the s-meter reads about S2 or S3.  Touching the XG1 can get
> the signal up to about S4 or S5.  Switching between 1 uV and 50 uV makes no
> apparent difference in signal strength on the s-meter.
>
> Resistance checks on the XG1 and found some problems:
>
> Resistance from the following junctions to ground:
>
> U2, R1 = 50 k Ohms (should be 57-63 k Ohms)
> C4, R3 = 50 k Ohms (should be 57-63 k Ohms)
> R1, C1 = 54 k Ohms (should be 67-73 k Ohms)
>
> Checked all component placements and solder joints, no obvious problems.
> Reheated all solder joints (twice now) just in case; no improvement.
>
> My next step is to measure all the resistor and capacitor values.
>
> Do these symptoms jump out anybody as something obvious (bad xtal or other
> component)?  Any suggestions will be most appreciated.
>
> 73
>
> Brian - N5BCN
>
> -----
> K2 #6800 KSB2 KAT2 KIO2 KNB2
> --
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