Speakers, earphones, microphones and earphone plus microphone combinations for use with PMR portable radio equipment, including headsets for fixing inside helmets and costumes.
Mono 'on the ear', 'D' shaped earphones, designed to fit comfortably to one ear, with a band behind the ear holding the earpiece securely in place. EP-1 has a 1.5 metre straight cable, with right-angled 3.5mm two-pole jack plug. EP-2 has a 2.5mm right-angled plug. Impedance: 8 ohms. Response: 20Hz - 20kHz. Power: 100mW maximum.
EP-5 is a semi-covert type, with acoustic ear tube and ear bud, 630mm straight lead, right-angled 3.5mm two-pole jack plug. Impedance: 110 ohms. Response: 500Hz - 8kHz.
Sharman Earphones with Microphones
The HEPM600 consists of an earpiece which is held against the ear by an ear-loop, which also positions a flexible boom microphone. Inline PTT switch, 1.5m cable. Equipped with 'standard' dual-jack moulded plug. Omni-directional condenser microphone, response 20-20,000Hz. Speaker level: 98dB. Power: 30mW. Impedance: 32ohms. Response: 400-20,000Hz.
The JH-804 surveillance kit has on one cable a microphone with PTT switch, on the other an acoustic-tube fitted to an earpiece, both cables connected with a dual plug.
A microphone system developed for transmitting from bike to bike using any type of 'standard' wired transceiver, which may also be of use in theatrical applications and in theme parks. The HM100 system comprises two ultra flat earphones that can be affixed inside most helmets and some costumes, a noise canceling microphone that can be fixed in front of a closed type helmet, and a waterproof PTT switch that can be mounted on the handlebars of the motorbike or fixed inside a 'costume'. Fitted with two-jack 'standard' type plug.
Alternative version to HM100, the HM200 has the same features and specification but is supplied with a flexible boom microphone instead of front fixed microphone, allowing to be used with closed face or open face helmets, and in theatrical costumes. Fitted with two-jack 'standard' type plug.
SPK25 Lapel Speaker
Miniature speaker 60m x 60m with clip to attach to a lapel. Curly, 1-metre cable, 3.5mm single-pole straight jack plug.
SHARMAN DM100 Lapel Speaker/Microphone
The DM100 is fitted with a lapel mounting clip which is adjustable to clip at different angles and a curly cord with moulded dual plug. Side-mounted PTT switch.
Many communication devices use quasi-standard connections for external devices. These are a 2.5mm single-pole jack for an external microphone input and a 3.5mm single-pole jack for feeding an external earpiece or speaker depending on the model. Many have the provision for external transmitter keying using the microphone connector.