Operating instructions

RF Technology R350/R500 Page 19

7.4.11 Modulation Acceptance BW 7 SPECIFICATIONS

7.4.11 Modulation Acceptance BW

25 kHz spacing - 7.5 kHz per RS204C

12.5 kHz spacing - 3.75 kHz per RS204C

7.4.12 Noise Squelch

Adjustment Range: 6 - 26dB SINAD Minimum

Attack Time: 20 ms above 20dB Quieting

Release Time: 150~ms at 20dB Quieting decreasing to 20ms above 2µV preset

threshold

Hysteresis: Hysteresis is equal to approximately 2dB change in noise quieting

7.4.13 Carrier Level Squelch

Carrier level squelch can be used when it is necessary to set the opening point above

26dB SINAD as may be required in link applications. The minimum adjustment range

is 1 to 200µV.

7.4.14 Receiver Frequency Spread for -1dB degradation

R350: ≈7 MHz (approximately 2%)

R500: ≈10 MHz (approximately 2%)

7.4.15 Receiver Conducted Spurious Emissions

Less than -57dBm from 1 to 2900 MHz

7.4.16 Audio Frequency Response

600ΩLine and Direct Output: +1/-3dB 300-3000 Hz relative to either a flat

response or 750µs de-emphasis

Sub-Audio Output: +1/-3dB 67-250 Hz

7.4.17 Audio Output Level

600ΩLine: Adjustable -10 to +10dBm