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148
On the Test Set using the knob and data entry keys:
15. Slowly increase the Amplitude until squelch just remains open.
Critical Squelch is displayed as Amplitude as shown.
• Record this level.
16. Decrease Amplitude until the Receiver’s squelch just closes.
• Record this level.
Calculate the measurement:
17. Critical Squelch Hysteresis is the difference between the two readings.
On the Radio set the Receiver’s Controls as follows:
18. Set the Receiver’s squelch control to maximum.
On the Test Set using the knob and data entry keys:
19. Increase Amplitude until the Receiver’s squelch just opens.
• Record this level.
20. Record the maximum squelch sensitivity is displayed as Amplitude as
shown.
21. Decrease Amplitude until the Receiver’s squelch just closes.
• Record this level.
Calculate the reading:
22. Maximum Squelch Hysteresis is the difference between the two readings.
Squelch
Sensitivity
To Screen
RX TEST
AC Level
Filter 1
50Hz HPF
Filter 2
15kHz HPF
Atten Hold
On/Off
Ext Load R
8.00
Ω
RF GEN
RF ANL
AF ANL
SCOPE
SPEC ANL
ENCODER
DECODER
RADIO INT
More
V
dB
0.7878
SINAD
RF Gen Freq
28.310000
MHz
Amplitude
1.58
uV
Output Port
RF Out/Dupl
AFGen1 Freq
1.0000
kHz
AFGen2 Freq
1.0000
kHz
AFGen2 To
Off
FM
0 20.44 24
AFGen1 To
30.0
%
AM