TH-K2AT/K2E/K2ET

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

 

 

 

 

 

 

 

 

Adjust”.

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)

 

 

 

 

 

 

 

36