Philmore crystal detectors (2) and crystals - $15

Philmore crystal detectors (2) and crystals 1 thumbnail

QR Code Link to This Post

Philmore open type
Catalog no. 310

The 310 is a radio. Instructions show how to connect an antenna and earphones. Folks could also attach a coil of wire they wound themselves to make tuning more reliable.

5 crystals, 3 are tested.

post id: 7938425984

posted: 2026-06-02 21:26

♥ best of ^[?]

reading

writing

saving

searching

refresh the page.

Philmore crystal detectors (2) and crystals - collectibles - by...

Philmore open type Catalog no. 310 The 310 is a radio. Instructions show how to connect an antenna and earphones. Folks could also attach a coil of wire they wound themselves to make tuning more...