Quote:
Originally Posted by Synchrodyne
Quote:
Originally Posted by Radio Wrangler
That said, there is little point busting a gut to get receiver noise very low as natural noise from the atmosphere and astronomical sources increases with decreasing frequency.
|
As illustrated by the attached chart:
Attachment 217653
Cheers, |
Hmm, the chart shows increasing noise as frequency falls, however the figures shown don't mean a whole lot to me. 60dBuV/m at 100kc/s. Or 1mV/m. Sounds a lot, but what does one get out of a serious LF/VLF aerial, given the usual size limitations? I mean what antenna factor can we expect at this sort of frequency?
Richard