[600MRG] 2200m beacon oooops....

[Murray Greenman]

Hi,

I've had power supplies trip with the high peak current as the amplifier 
keys (this is on 630 m), and found an acceptable solution to be adding 
intentional resistance in the DC supply lead. I used an 0.23 Ohm 10 W 
resistor, but a length of appliance wire will also do the trick.

It makes no obvious difference to the power output, and if you're 
worried, just wind the power supply voltage up slightly. My experience 
was with a 100 W 12 V Class D amplifier and a 30 A power supply.

73,
Murray ZL1BPU


On 27/04/2021 6:43 am, Larry Molitor via 600MRG wrote:
> The power supply for the amplifier keeps tripping out running 
> FST4W-900. No idea why. Don't have time to troubleshoot it so am 
> changing back to FST4W-300. Will run that the rest of today and 
> tonight, assuming the power supply co-operates.
>
> Thanks & 73,
>
> Larry - W7IUV
>
>
>
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