The RX sensitivity at 4 kcs is a lot less than 9 kcs therefore it might appear a better choice but one would need to be convinced and more research is needed. I prefer to go the other way up to say 1
Looking on the VLF spectrum I notice that noise at 4kHz or lower is abt 30dB less than around 10kHz or higher (see screenshot). So wouldn't it make sense to trx around 4kHz? Wouldn't the 30dB noise a
Hello Clemens, Your observation is correct. This has also been mentioned by Paul Nicholson, who has a first class ELF-VLF monitoring station. However this frequency will ask for much larger loading c
Hi Daniele and Rik, thanks for your replies. The low noise below 4kHz is even more impressive to watch live on Perseus when static crashes periodically shoot the noise baseline quickly upwards. The b