Kenwood TM-221A Service Manual page 35

Condition
ADJUSTMENT
Measurement
Adjustment
TM-221A/E/ES
Test "th
equipment | Unit {Terminal
Part
Method
Specification/Remarks
5, Sensitivity 1) FREQ. : 146.020 (K,M)
145.040 (T,W)
SSG output : —9dBu
144.020
3) FREQ. : 147.980 (KM)
145.960 (T,W)
AF VM
Oscillo- panel
scope
82
dummy
load
Check
SINAD 12dB or more.
TRANSMITTER SYSTEM ADJUSTMENT
Item
1) FREQ. : 146.020 (K,M)
145.040 (TW)
SSG output : —6dBy
MOD : OFF
2) SSG output : 16dBu
LCD
{S-meter)
Set the RF scale to
reads ''2 digit'.
Ali digits light.
3) SSG : OFF
Condition
Measurement Adjustment
Test
equipment] Unit {Terminal
Unit Part Method
S-meter lights OFF.
Specification/Remarks
1-1. RF
output
1) FREQ. : 146.000 (K,M)
145.020 (TW)
VR6 (TX-RX unit) : Fully
clockwise (CW)
VR1 (Final unit) : Center
Transmit.
2) FREQ. : 147.995 (KM)
145.020 (T1,W1)
145.980 (T2,W2)
Transmit.
3) FREQ. : 144.000
Transmit.
4) FREQ, : 146.000 (K,M)
145.980 (T1.W1)
145.000 (T2,W2)
Transmit.
1) FREQ. : 146.000 (K,M)
145.020 (T,W)
LOW SW: ON
Transmit.
ANT
(1E)
Rear
panel
Power
meter
(DC pow-
er supply
galvo
meter)
TC3
(3A)
TC4
MAX
50W or more (K,M,T2,W2)
13W or more (T1,W1)
47W (K,M,T2W2)
12W (T1,W1)
ON AIR LCD indicated.
+4W, less than 9.5A
(K,M,T2,W2)
+2W, less than 2.8A
(T1,W1)
43W or more, less than 9.5A
(K,M,T2,W2)
10W or more, less than 2.8A
(T1,W1)
Check
0.5~ 2W, less than 1.54
(T1.W1)
5W (K,M,T2,W2)
a
+2W, less than 4A.
|(K.M,T2,W2)
2, RF meter 1) FREQ. : 146.000 (K,M)
145.020 (T,W)
Transmit.
2) LOW SW: OFF
Transmit.
LCD
(RF
meter)
Set to the RF scale
reads ''6 digits',
-
All digits light.
1) FREQ. : 146.000 (K,M)
145.020 (T,W)
AG : 1kHz, 50mV (K,M)
1kHz, 30mV (T,W)
@ MS-57A/61A (Anritsu)
HPS : OFF
LPF : 20kHz
2) AG : 1kHz, 5mV (KM)
1kHz, 3mV (TW)
ANT.
(1E)
Rear
panel
Linear
detector
Modula-
tion
analyzer
Power
meter
|s200H2
+200Hz (K,M)
£2.2~3.6kHz (TW)
37