47: See how low you can go in the frequency spectrum
This was a fun exploration: What's the lowest-frequency broadcast I can receive?
The RTL-SDR Blog V4 stick I'm using has a neat feature – a built-in "upconverter", which is enabled automatically when you try to listen to frequencies below what the chipset supports. This allows it to receive down to ~500 kHz!
The first stations that are comprehensible start at 1 MHz for me.
blinry /
npub1xh…uazuf
2024-03-10 17:27:36
in reply to nevent1q…tsa0
Author Public Key
npub1xh9fh6cs7c5zhhz330pz4s5kdwg44aq7xu33f6ylxtedkjj6g6ysvuazufPublished at
2024-03-10 17:27:36Event JSON
{
"id": "a6af8138ff93c02d8360ca2921ecea17b3fe0d9c746e246aaa9bedb97b7bd269",
"pubkey": "35ca9beb10f6282bdc518bc22ac2966b915af41e372314e89f32f2db4a5a4689",
"created_at": 1710091656,
"kind": 1,
"tags": [
[
"e",
"7fdb48b971b3f26d2d4cc8b155743db8183d0e98d57692ed257ce7f5da5ef08c",
"wss://relay.mostr.pub",
"reply"
],
[
"proxy",
"https://chaos.social/users/blinry/statuses/112072566830376812",
"activitypub"
]
],
"content": "47: See how low you can go in the frequency spectrum\n\nThis was a fun exploration: What's the lowest-frequency broadcast I can receive?\n\nThe RTL-SDR Blog V4 stick I'm using has a neat feature – a built-in \"upconverter\", which is enabled automatically when you try to listen to frequencies below what the chipset supports. This allows it to receive down to ~500 kHz!\n\nThe first stations that are comprehensible start at 1 MHz for me.\n\nhttps://assets.chaos.social/media_attachments/files/112/072/564/458/589/210/original/cc5ff2908379955d.mp4",
"sig": "ce7ceccb87ec79b2f7babc66257c63dfef0efec8bc576e92ac83a8b3bde854ba15b1436fc63edf3328128153b912211148454030f426c16e4e6226d9efd09a76"
}