WIRELESS EQUIPMENT
An Apex crystal set
細節
An Apex crystal set
with detector on ebonite panel above variometer with dial, on ebonite base with aerial, earth and phone contacts, stamped P.O. Reg. No.845 -- 6in.(15cm.) high (lacking detector cover)
with detector on ebonite panel above variometer with dial, on ebonite base with aerial, earth and phone contacts, stamped P.O. Reg. No.845 -- 6in.(15cm.) high (lacking detector cover)