Operating instructions

RF Technology R70/R71 and R150 Page 21

7.4.13 Carrier Level Squelch 7 SPECIFICATIONS

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

Less than 1 dB change in sensitivity over the band

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 with the

high pass and notch filters bypassed.

+1/-6 dB with the filters in circuit.

Sub-Audio Output:

+1/-3dB 67-250 Hz

7.4.17 Audio Output Level

600ΩLine:

Adjustable -10 to +10dBm

Monitor Loudspeaker:

5 Watts with external speaker, 0.3 Watt with internal speaker

Discriminator and Sub-Audio:

Nominally equal to 1 volt peak at rated system deviation

7.4.18 Audio Distortion

750µs De-Emphasis:

Less than 3% at 1 KHz and 60% of rated system deviation

Flat Response:

Less than 5% at 1 KHz and 60% of rated system deviation