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TH-K2AT/K2E/K2ET
36
ADJUSTMENT
Receiver section
Item Condition
Measurement Adjustment
Specifications/
Test equipment Unit
Terminal
Unit
Parts Method
Remarks
1.RX BPF Squelch level: 0
Adjust 1) Frequency: 145.050MHz SSG TX-RX ANT VOL Turn the VOL knob 0.63V
(E, E3) Oscilloscope (A/3) SP knob to obtain 0.63V AF
Frequency: 146.050MHz Distortion meter output.
(K, K2, M, M2) AF V.M
SSG output: –53dBm (501 uV)
Dummy load
SSG MOD: 1kHz
SSG DEV: 3kHz
Switch to Adjustment mode
and carry out the operations
for adjustment item E.
(Refer to page 29)
2) LCD display: BPL Encoder Write Max Sensitivity
Frequency: 136.050MHz [MENU]
SSG: –119dBm (0.25 uV)
3) SSG: –113dBm (0.501 uV) Check 12dB SINAD or
more
4) LCD display: BPC Encoder Write Max Sensitivity
Frequency: 146.050MHz [MENU]
SSG: –119dBm (0.25 uV)
5) SSG: –120dBm (0.22 uV) Check 12dB SINAD or
more
6) LCD display: BPH Encoder Write Max Sensitivity
Frequency: 160.050MHz [MENU]
SSG: –119dBm (0.25 uV)
7) SSG: –113dBm (0.501uV) Check 12dB SINAD or
more
2.IF response 1) Frequency : 144.050MHz SSG Check 12dB SINAD or
Check
SSG Frequency: 221.750MHz
Oscilloscope less
SSG output: –60dBm (224uV)
Distortion meter
Note: If the
SSG MOD: 1kHz
specification is not
SSG DEV: 3kHz
satisfied, repeat the
AF output: 0.63V/8Ω
operations for
“1. RX BPF
Ad
just”.
3.Squelch / Switch to Adjustment mode SSG ANT
S-meter and carry out the operations
Write for adjustment item C.
(Refer to page 28)
1) LCD display: SQ1 [MENU] Write Note: In the
Frequency: 145.050MHz Squelch adjust
(E, E3) ments, all 4
Frequency: 146.050MHz adjusting points
(K, K2, M, M2) including the S-
SSG: –125dBm (0.126uV) meter must be
2) LCD display: SQ2 [MENU] Write adjusted.
Frequency: 145.050MHz
Squelch
(E, E3)
Frequency: 146.050MHz
(K, K2, M, M2)
SSG: –120dBm (0.22uV)