User Manual

in = 2805 = 3.43 inches

818.5

wavelength (in inches)= 6.85 inches

The cable length should be 3.43 + n x 6.85 inches. Since the installer will

need a length of the coax from the antenna to the radio to be at least 22

inches long to physically connect the antenna to the radio, he must calculate

a length of coax that will meet the odd quarter-wavelength requirement and

be greater than 22 inches.

Choose n=3. Coaxial cable length is 3.43 + 3 x 6.85= 23.99 inches.

Example 2: Assume the center frequency is 155 MHz. Applying the

formula: ¼

= 18.10 inches; ½ wavelength = 36.19 inches; n=1.

Coaxial cable length is 18.10 + 1 x 36.19= 54.29 inches.

Typical Motorcycle Mount Antenna Installation

The typical motorcycle mounting of an antenna is only applicable when the

installation provides at least 20 centimeters (8 inches) between the antenna

and operators/bystanders. This distance recommendation is made using a

50% duty cycle.

1. After the proper length of coax cable has been calculated, cut the coax

cable (provided by Allen Telecom, Inc.) so that when the TNC crimp

style connector is installed the overall length will equal the calculated

length.

2. Route the assembled proper length coax from the antenna, under the

antenna bracket, and into the weather-resistant case.

3. Connect the antenna cable to the RF port on the J

AGUAR

725M radio.

WARNING

See “Safety Training Information” section at the beginning

of this manual for further information regarding Specific

Absorption Rate (SAR) limits of RF radiation absorption set

by the FCC.