PPS: ...or is there any addition to the regulation that an antenna
system must be resonated to the fundamental frequency of the transmitter?
Am 29.01.2014 15:32, schrieb Stefan Schäfer:
PS: There is no power limitation in that VLF range below 8.3 kHz, it
is not even amateur radio by definition so we do not act as radio
amateurs. Actually everyone can transmit in that range, at least in DL
or other countries where no NoV is needed.
So actually, i can radiate several 10 mW ERP at 12 kHz as long as i am
TXing at 4 kHz fundamental frequency, because i do not cause
interferences? :-)) Isn't that nice? :-)
73, Stefan
Am 29.01.2014 15:17, schrieb Stefan Schäfer:
Ooooh, this is very intersting! :-)
Does it mean that i can do VLF experiments at e.g. 18 kHz by
generating a VERY distorted 6 kHz signal? The groundwave is at 6 kHz,
i.e. below 8.3 kHz and i can assume that the 18 kHz harmonic will not
cause interferences to any services operating there!! :-)
Horray!! :-)
When using a resonant antenna, resonated to 18 kHz, i can even
optimise the power losses of the transmitter.
According to
https://dl.dropboxusercontent.com/u/19882028/VLF/fig_02_25a.png we
should try 12 kHz, eheheeem, i mean 4 kHz, wehere propagation should
be best :-)
73, Stefan/DK7FC
Am 28.01.2014 22:18, schrieb LZ:
Dave,
You wrote:
... In other words NO signal must escape that is higher than that
8.3 kHz limit -That is it!! -end of!! Dave
No, wrong.
Right: "In other words NO *interfering* signal must escape that is
higher than that 8.3 kHz limit..."
Laura
Gesandt von mein PettiFogPhone
|
