[Lowfer] Good copy of WE

Bill Ashlock [email protected]
Tue, 14 Jan 2003 21:25:23 -0500


Mike,

>I still don't have a current probe built for the vertical. I have to >get 
>gong on the building before it warms up again.

All you have to do is monitor the Vcc current since the efficiency of the 
output stage is near 100%. Can't remember if your power supply is located 
outside or not. If it's outside, you my have a couple of wires available 
going back to the shack in which you can measure the drop across a 10 ohm 
resistor. I think you will be amused at the changes in current. I'll have to 
take a digital pix of my daily input current from the chart recorder, even 
though it's not as variable as typical vertical. As soon as the sun comes 
out in the morning there's a quick drop, probably the result of the melting 
water in the top layer of snow, that becomes conductive. The current heads 
back up when the sun is under a cloud.

Bill

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