Kenwood AT-230 Service Manual

[GENERAL]
Frequency Range .................................... 1 60 m Band
1.8
-- 2.0 MHz
80 m Band 3.5
-- 4.0 MHz
40 m Band 7.0
-- 7.3 MHz
* 30 m Band 10.1 -- 10.15 MHz
(1 0.0 MHz WWV)
20 m Band 14.0
-- 14.35 MHz
* 17 m Band 18.068 -- 18.168 MHz
15m
Band21.0- 21.45MHz
* 12 m Band 24.89 -- 24.99 MHz
10 m Band 28.0 -- 29.7 MHz
Modes ................................................. SSB/CW: 830s. SSB/AM/CW: 830M
Power Requirement ............................... 120V AC (220V modifiable), 50/60 Hz: 830s (K)
220/240V AC (selectable), 50/60Hz : 830s (T) (W) (X)
120/220V AC (selectable), 50/60Hz : 830M
Power Consumption Transmit: 295 watts
Receive: 32 watts (with heater off)
Dimensions ............................................. 333 (1 3.3) x 133 (5.3) x 333 (1 3.3) mm (inch)
....................................................
Weight 13.5 kg (29.8 Ibs)
TRANSMITTER^
*Final Power Input .................................... 220W PEP for SSB operation : 830S, M
180W DC for CW operation
: 830S, M
80W DC for AM operation
: 830M
...........................
Audio Input Impedance
500Q -- 50 kQ
............................. R F Output l mpedance
50Q -- 75Q
Frequency Stability ................................. Within 1 kHz during the first hour after 1 minute of warmup.
Within 100 Hz during any 30 minute period after warmup.
Carrier Suppression.. ............................... Better than 40 dB
Sideband Suppression ............................. Better than 60 dB
................................ Spurious Radiation..
Better than 60 dB
Harmonic Radiation ................................ Better than 40 dB
Audio Freq. Response ............................. 400 to 2,600 Hz, within - 6 dB
.....
3rd Order lntermodulation Distortion..
Better than - 36 dB
[RECEIVER]
Receiver Sensitivity ................................. 0.25 pV at 10 dB S + N/N for SSB, CW : 830S, M
2pVat 10dBS+N/NforAM : 830M
............ ...............................
Image Ratio ; Better than 60 dB
....... ...............................
IF Rejection .. Better than 80 dB
.)
Receiver Selectivity
CW NARROW
................................... Wlth Y K-88C (option 1500 Hz ( - 6 dB). 1.5 kHz ( - 60 dB)
W~th Y K-88CIV (option) 270 Hz ( - 6 dB), 1.1 kHz (- 60 dB)
i
]830s F
Wtth YG-455C (opt~on) 500 Hz (-6 dB), 820 Hz (-60 dB)
Wtth YG-455CN (option) 250 Hz (-6 dB), 500 Hz (-60 dB)
.................................................
AM
6 kHz ( - 6 dB). 1 1 kHz ( - 60 dB) : 830M
Variable Bandwidth
SSB with
2.4 kHz filter ........................ 500 Hz--2.4 kHz (-6 dB) continuously variable : 830S, M
CW with 500 Hz filter .......................... 150 Hz-- 500 Hz (- 6 dB) continuously variable : 830s
With optional filter YK-88C and YG-455C added.
i
~
AM ........................ ... .................. 4.5 kHz-- 6 kHz ( - 6 dB) continuously variable : 830M
........................
Notch-filter Attenuation
Better than 40 dB -
........................
Audio Output Impedance 8- 16Q
Audio Output ......................................... 1.5W (8Q)
*Will transmit on the new 30, 17, and 12 meter bands. Diodes installed for preventing accidental
transmission before government amateur authorization.
NOTE: The circuit and ratings may change without notice due to developments in technology.

Kenwood AT-230 Specifications

General

Brand	Kenwood
Model	AT-230
Category	Tuner
Language	English