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| https://sites.google.com/site/arvidevans/LED_Antenna_Current_Indicator.png |
10 Feb 2013
Simple antenna current meter
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antenna current meter
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Simple QRP projects, 10m, 8m, 6m, 4m, FT8, 160m, WSPR, LF/MF, sub-9kHz, nanowaves and other random stuff, some not related to amateur radio.
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| https://sites.google.com/site/arvidevans/LED_Antenna_Current_Indicator.png |
I have to confess I have no idea where these are and the callsign does not help. In a short while I shall look them up. This is a QSL card....
1 comment:
Don't forget to shunt the captor coil of the toroid, with a low value (100 ohms) resistor. To avoid to choke the RF. Some cores take temperature, with only 5 W.
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