Falcon MD20 Probe: 300kHz Specialist for Fine Gold and Jewelry Recovery
The Falcon MD20 operates at 300kHz, a frequency far higher than standard VLF detectors, which typically run between 5kHz and 20kHz. This ultra-high frequency makes the MD20 exceptionally sensitive to tiny gold flakes and fine jewelry, but it sacrifices depth and large-target detection in exchange. We use the MD20 as a probe, not a primary detector. It excels in three scenarios: scanning classifier concentrate after dry washing or sluicing, checking bedrock cracks and crevices where larger coils cannot fit, and recovering shallow rings and earrings at the beach where targets sit within the top few inches of sand.
The MD20 is not designed for general-purpose coin hunting or deep relic work. Its detection envelope is shallow, typically under six inches for small targets, and it responds strongly to ferrous trash in mineralized ground. Buyers who add the MD20 to their kit already own a gold prospecting detector for scanning larger areas and are looking for a tool to sample concentrate or probe tight spots where a full-size coil cannot reach.
Using the Falcon MD20 for Concentrate Sampling and Bedrock Probing
Concentrate sampling is where the MD20 shines. After running material through a classifier down to minus-20 or minus-30 mesh, we spread the concentrate in a shallow tray and scan with the MD20 probe. The 300kHz frequency detects sub-gram gold pieces that a standard detector would miss, and the audio response is immediate. This workflow is common among prospectors who dry wash in desert areas or run highbankers in seasonal streams. The MD20 confirms whether the concentrate contains fine gold before committing to further processing.
Bedrock probing is the second core use case. In exposed bedrock areas, gold settles into cracks and pockets that are too narrow for a standard search coil. We use the MD20 probe to check these crevices directly, often after clearing loose material with a crevice tool. The probe tip fits into gaps a few inches wide, and the high-frequency response picks up small nuggets and flakes trapped in the crack. This is a slow, methodical process, not a sweep-and-go hunt, but it recovers gold that would otherwise stay in the ground.
Falcon MD20 for Shallow Beach Jewelry Recovery
The MD20 also works for shallow jewelry recovery at the beach, particularly in dry sand or wet sand within the first few inches of depth. We have used it to recover small earrings and fine chains that a conventional beach detector flagged but could not pinpoint precisely. The MD20 probe isolates the target quickly, and the narrow detection field reduces false signals from adjacent trash. However, the MD20 is not waterproof and cannot handle surf zone hunting or deep sand targets. It is a dry-sand or shallow-wet-sand tool, not a replacement for a submersible detector.
Falcon Headphones and Replacement Parts
The MD20 ships with basic headphones, but many users upgrade to Falcon's over-ear model for better audio clarity in noisy environments like active mining claims or windy beach conditions. Replacement parts, including probe tips and battery compartments, are available through our gold panning guide and accessories catalog. The MD20 runs on a 9-volt battery, and we recommend carrying spares during long field sessions, as the high-frequency operation drains power faster than standard VLF detectors.
