Furuno FS-2570 - Transmitter Check List; 6. Communication Test Procedures

Pub. No.: SB-2241
Date : November 1, 2002
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3.3 OCCUPIED BANDWIDTH (FCC Rule Part 2.1049)
3.3.1 Method of Measurement
The FS-2570 is connected with measuring equipment as shown in Fig. 3.3.1.
2 audio tones of 400 Hz and 1800 Hz are applied, in equal level, to the transmitter. The level
is adjusted to 10 dB above the level producing PEP output of 250 W for test frequencies 4
MHz or below.
The output is monitored with Spectrum Analyzer with settings of span 50 kHz, IF bandwidth
(resolution bandwidth) 300 Hz and video bandwidth 300 Hz.
Fig. 3.3.1
3.3.2Test Result
Results are shown in Fig. 3.3.2 to 3.3.12 for J3E (USB) and Fig. 3.3.13 to 3.3.22 for F1B, J2B.
Occupied bandwidth is a bandwidth in which 99 % of the mean power radiated falls.
EUT
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