This page shows the various 'other' instruments available from JMI: harmonicas, accordions, saxophones, keyboards, and the Vox radio microphone.
The Vox radio microphone was described as follows:
The solution for performers who wish to move around freely without direct contact with the amplifier or the encumbrance of connecting cables. A Lavalier type microphone is connected to a miniature transmitter concealed in a pocket. The compact receiver unit fits to any high impedance type amplifier. GPO approved. Crystal controlled. Transmitter and Receiver operating on 174.6 to 175 m/cs
$4572
$1250
$3295
$4499
$1800
$2794
$1495
$69
$1000
$149
$149
$1000
$450
$500
$100
$120
$400
$55
$2495
$300