Bargraph Current Test

[Dennis Vavra]

Hi Tom,
I reheated some more solder joints, on the contrl bd, and reheated R115 on the RF bd as well.Am now using another "wall wart"
rated at 12v DC and 500ma. The reading at the back of the K2 (DC barrell connector), showed 12.6v DC.
The Bargraph Current Test Shows E12.6,  0.06 for step 4...and E11.8, 0.24 for step 6 of the test.It looks
closer voltage wise, a difference of abt 0.8vDC. Current looks good tho. Any advise at this point?
Dennis Vavra, AD5LY
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[Don Wilhelm-3]

Dennis,

That may be OK for a 500 ma. wall wart.  Unless it is one of the rare
regulated wall warts, the low current voltage will be quite high and when
loaded to half is capability (approximately .25 Amps), the voltage can sag
quite a bit.  Remember that there is a protective diode in series inside the
K2 which will drop about 0.1 to 0.2 volts.

If you can get a more stable power supply than a wall wart, please do so.
If not, the wall wart will likely serve you through the Alignment and Test
Part 2, but after that you will need a stable power supply capable of at
least 3 amps.

73,
Don W3FPR

> -----Original Message-----
>
> Hi Tom,
> I reheated some more solder joints, on the contrl bd, and
> reheated R115 on the RF bd as well.Am now using another "wall wart"
> rated at 12v DC and 500ma. The reading at the back of the K2 (DC
> barrell connector), showed 12.6v DC.
> The Bargraph Current Test Shows E12.6,  0.06 for step 4...and
> E11.8, 0.24 for step 6 of the test.It looks
> closer voltage wise, a difference of abt 0.8vDC. Current looks
> good tho. Any advise at this point?
> Dennis Vavra, AD5LY
>

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