SPECIFICATIONS
GENERAL
Type: Amateur HF transceiver
Frequency range: 10-160 m WARC in 12 bands
160 m: 1.8-2.0 MHz
80 m: 3.5-4.0 MHz
40 m: 7.0-7.5 MHz
30 m: 10.0-10.5 MHz
20 m: 14.0-14.5 MHz
17 m: 18.0-18.5 MHz
15 m: 21.0-21.5 MHz
12 m: 24.5-25.0 MHz
10 m A: 28.0-28.5 MHz
10 m B: 28.5-29.0 MHz
10 m C: 29.0-29.5 MHz
10 m D: 29.5-29.9 MHz
Tuning steps: Analog / continuous
Frequency stability: Less than 100 Hz after 30 minute warmup
Mode: SSB / CW (AM or FM options)
Channels / memory management: 2 optional
XTAL controlled
Repeater shift / offset: No
Power supply: Mains: 100 / 110 / 117 / 200 / 220 / 234 VAC (13.5 VDC option)
Current drain / power consumption: RX: 85 VA (73 VA heater off) @ mains
RX: 5.5 A (1.1 A heater off) @ 13.5 VDC
TX: Max 330 VA @ mains
TX: Max 21 A @ 13.5 VDC
Antenna impedance / connector: 50-75 ohm / SO-239
Dimensions (W*H*D): 345*157*326 mm (13.58*6.18*12.83")
Weight: 15 Kg (33.1 lb)
Other features: NB. VOX. 25 KHz calibrator. 10/20 dB attenuator. Dimmer.
RECEIVER SECTION
Receiver system: Single conversion superheterodyne
IF: 9 MHz
Sensitivity: AM: 0.5 uV (10 dB S/N), with AM option
FM: 0.3 uV (20 dB noise quieting), with FM option
SSB/CW: 0.25 uV (10 dB S/N)
Selectivity: AM (With AM option)
3.6 KHz (-6 dB)
6.8 KHz (-60 dB)
FM (With FM option)
12 KHz (-6 dB)
24 KHz (-60 dB)
SSB/CW
2.4 KHz (-6 dB)
4 KHz (-60 dB)
CW (With optional narrow CW filter)
600 Hz (-6 dB)
1.2 KHz (-60 dB)
CW (With optional extra narrow CW filter)
350 Hz (-6 dB)
1.2 KHz (-60 dB)
Image rejection: 60 dB (12-160 m)
>50 dB (10 m)
AF output power / speaker: 3 W at 10% distortion / 4 ohm
External speaker connector: 4-16 ohm

TRANSMITTER SECTION
RF output power:

Max pwr
AM: ~25 W (With AM option)
FM: ~25 W (With FM option)
SSB (PEP): ~100 W
CW: ~100 W
Modulation system: AM: Low power stage (With AM option)
FM: Variable reactance (With FM option)
SSB: Balanced
Max FM deviation (Factory set): ±5 KHz (With FM option)
Spurious emissions: Better than -40 dB
Microphone impedance / connector: 500-600 ohm / 4-pin (Metal locking ring connector)
Microphone input level: ? mV

MISCELLANEOUS
Manufactured: Japan, 1981-1986 (Discontinued)
Additional info: Tube hybrid
Related documents: User manual (16.2 MB)
Service manual (19.9 MB)
12BY7A driver
Two 6146B finals
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