This seems very similar to Digital Radio Mondiale, but I cant find an example that looks or sounds just like it. I find several occurrences of these in the HF range in Northern Louisiana. Picked it up on a 60 foot Line-on-Ground antenna.
Max reception of about 175 miles. 66mm monopole with 70mm radials, 12 or so feet off the ground, paired with a LNA.
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This was a fun little project. Bought a pack of SMA connectors off of amazon for a few bucks and the copper is from some old romex wire. Please Ignore my soldering :)
Does anyone have recommendations for a Loop Antenna? Trying to get into LF.
There are many options on Amazon, leaning towards the MLA-30+ but curious if anyone has guidance they could offer.
I made a 60 foot Line-on-Ground antenna out of some Romex wire, which has served me well but looking to upgrade.