AV-1 KM CAR HANDS-FREE PTT KIT
YAESU 6-pin wiring compatible with MH-48 mic for the following transceivers:
FT-7800/7900/8800/8900/1900/2900/2800/1802/FTM-400/100/3100/3200 ETC
Road traffic laws in many countries prohibit the use of radio transceivers while driving. To continue using an amateur radio transceiver while driving, a hands-free kit is necessary that does not distract the driver and keeps their hands free.
The AV-1KM hands-free kit consists of a microphone placed at the end of a long "gooseneck," a convenient PTT switch, and a cable suitable for the radio model in use. The microphone is usually attached to the sun visor inside the car; thanks to the long and flexible gooseneck, the microphone can be positioned so that it does not obstruct the view. The bistable PTT is installed in an appropriate location, such as the gear lever. Due to the bistable function of the switch, it is sufficient to touch it very briefly; the hand movement is the same as changing gears. If the radio offers the Vox function, this can naturally be used.
The AV-1KM hands-free kit is supplied with different cables, each suitable for a specific transceiver model or manufacturer. This greatly facilitates quick installation, as no soldering of any cables is necessary. The microphone is an Electret type (AKA capacitor type); the necessary supply voltage is taken from the radio's microphone connector. This type of microphone is used by almost all vehicular FM transceivers. With the exact positioning of the microphone close to the mouth, most ambient noises can be suppressed. The microphone gain can be easily adjusted for the best modulation. The PTT switch box also offers other controls such as Up/Down buttons, if the radio supports these functions. A red LED indicates the PTT status, which helps to avoid involuntary transmissions.
The basic AV-1KM hands-free kit includes the cable for the radio with the modular connector (RJ). This is the most common cable used for mobile FM transceivers. For Icom or Kenwood radios with an 8-pin round connector (Foster), an additional adapter cable is required.
Flexible gooseneck microphone, unidirectional, with volume control.
Sun visor mounting bracket
Box with PTT and controls attachable to the gearstick with velcro belt.
DC power from the microphone jack of your radio.
UP / DOWN directly from the PTT box.
Hands-free PTT with VOX function
Adjustable Mic Gain.
Flex Microphone: 230 mm (L) x 8mm diameter
PTT box <> Microphone cable: 3m
PTT box <> Radio cable: 1.5m
PTT box dimensions: 54 (L) x 22 (H) x 69 (diameter) mm.
Attention:
The microphone mounts under the bolt of the sun visor panel. Ensure it is securely connected and the cable is routed safely. Make sure the microphone is angled so that it does not interfere with your forward vision.
