Multi-purpose Mfj-1708b, Rf Sensing, Tr Switch Cyber Monday Only [6lWzK5pf]

MFJ-1708B RF Sensing, TR Switch

The MFJ-1708B RF Sensing, TR Switch is a versatile and reliable solution for amateur radio operators seeking to enhance their transmission and reception capabilities. This advanced switch replaces the popular MFJ-1708 model, offering improved performance and enhanced features that cater to the needs of modern ham radio enthusiasts.

Key Features

• RF Sensing for radios without keying output during transmission
• Excellent isolation between transmit and receive ports

With the MFJ-1708B, you can seamlessly switch your antenna from receiver to transmitter using a relay, ensuring a smooth transition between modes. The switch also shorts your receiver to ground during transmission, protecting your equipment from potential damage. Its RF sensing capability allows for automatic switching when transmitting, making it ideal for radios that lack a keying output. The switch boasts good isolation between transmit and receive ports, ensuring minimal interference and optimal signal quality. Additionally, its SWR characteristics are exceptional up to 450MHz, making it suitable for a wide range of frequencies.

Practical Uses and Benefits

The MFJ-1708B is designed to cater to the diverse needs of amateur radio operators. Its receiver protection circuit limits any transmit RF spikes, ensuring the safety of your equipment. The control line input is compatible with radios that have a key line output, providing flexibility in operation. The mute output can be set to ground to mute or open to mute, allowing for precise control over transmission. Furthermore, the power off bypass feature sets the transmitter to the antenna, ensuring continuous communication even when the power is off. The adjustable receive delay, ranging from 50ms to 4 seconds, allows for customization based on your specific requirements.