ELF to VLF 18khz to 100khz on my AOR-5000 receiver

ELF and VLF Reception here at my location in Melbourne Using my AOR-5000 receiver with Collins filters set at CW 500Hz bandwidth. This reciever works very well down to 5khz but I cant find anything below 18Khz other than noise and signals that i cant identify.
Tunning from 18khz to 100Khz. Using a SDR-IQ I often see and hear natural radio signals below 10khz using a small 1m long active antenna E probe (homemade)

Category:

Science & Technology

Tags:

• ELF
• VLF
• aor
• aor-5000
• Radio
• Submarine
• communications
• Very
• Low
• frequency
• extra
• low
• receiver
• time
• signals
• reception
• SWL
• band
• propagation
• ham
• amateur
• HF
• ssb
• cw
• antenna
• magnetic
• electomagnetic
• waves
• experiment
• aor5000

[buffymarine]

could you make a video sound test?is it real that anyone thats over 30 cant hear those sounds?

[itakeyourphoto]

We are talking about radio frequencies not audio frequencies.. Radio uses electromagnetic waves. Audio freq uses vibrations and sound pressure waves that can be heard by humans. Our ear drum responds to these but not electromagnetic waves. Hope this helps.

[SASNIGHTCRAWLER]

@itakeyourphoto Hi, have you got or built an ELF EMW transmitter...stick it next to your head and watch how your emotions change after lock on, turn up and down within range...close your eyes and you may even pick up freaky creatures with big heads and bug eyes.

[itakeyourphoto]

@SASNIGHTCRAWLER Hi! I am going to build a transmitter for those frequencies as I have an interest in ELF. Its known that elf waves can and do affect how you feel and your emotions. Im sure goverments have done many experiments along those lines. I may try it once my transmitter is built..

[itakeyourphoto]

Hi. Yes I was supprised that the radio actually receives down that low. Before the 5000 the only other receiver that received down there was the SDR-IQ. Every other radio I tried just suffered from BCB overload.

Using the SDR-IQ I can see lots of unidentified signals below 10khz and spherics from time to time. 73s

[greatwhitenorth112]

did you know the moans of whales are elf and vlf i bet if put your antenna in the ocean you would hear them (theoretically speaking)

[indigoinut]

what is this crap?

[jk1dtk]

This video is interesting.

40 & 60kHz are JJY (Japanese standard time signal station).

40kHz is for east and north part of Japan, 60kHz is for west and south part of Japan.

Japanese government announces that workable distance is 1000km (40kHz) and 1500km (60kHz).

I am surprised the JJY can be received in Melbourne.

Distance is over 8000km!!

[farty1000]

Hi im v interested in this radio and keen to find one for sale i beleive they are the best?  what is it you are listening to here, i hear the carriers but what are they ?

[w0tm]

Correct limits (official) limits of ELF is 1 Hertz to 30 Hertz. Receiving 10 KHz proves nothing. Megawatt stations transmitting SLOW CW to submarines use 10 KHz range. Resonance of planet earth is 7.1 Hertz and earthquakes rumored to send out freq of around 2.5 Hz. Audio freq but it is possible to transmit RF in audio freq (like 2,5 Hertz). Antenna too large to make it directional. Yes, lightning whistlers are interesting to listen to - just natural product of nature. All normal.

[TonkoJursky]

Nothing special . . .

[ea6wu]

Good receiver!

73'

[sweetgyy]

is any of that stuff hear intelligible ?

[20122017]

nice radio