Frequency ranges:
-------------------------
MX-3.5S : 3.500-4.000 Modes LSB/CW
MX-7S : 7.000-7.300 Modes LSB/CW
MX-14S : 14.000-14.350 ModesUSB/CW
MX-18S : 18.068-18.168 Modes USB/CW
MX-21S : 21.000-21.450 ModesUSB/CW
MX-28S : 28.000-28.600 Modes USB/CW
MX-6S : 50.000-52.000 Modes SSB/CW
Semiconductors:
---------------------
4 ICs, 13Trs., 6FETs & 37 Diodes
Power supply voltages:
------------------------------
Internal 8.4-9VDC
6X AA drycells
7X Nicads.
When using drycells use supplied dummy battery.
External 9.5VDC
Do not put 12V directly into the rig unless using optional DC/DC
converter or charging internal nicads !!!
Power consumption:
--------------------------
RX 70mA ( at no signal)
TX 620mA (maximum)
Frequency stability:
--------------------------
+/- 500Hz At power-up
+/-100Hz at 25 deg. C after 30 Min.
Antenna impedance : 50 Ohms
Dimensions : 2.6" x 1.5" x 5.6"
Weight (including Batt.) :
MX-3.5S 645g.
all others 590g.
TRANSMITTER SPECIFICATIONS
---------------------------------------------------
Maximum power output : 2 Watts
(1 watt MX-6S 6 meters)
Spurious radiation: -40db
Modulation: Single sideband (suppressed carrier)
Carrier suppression: 40db minimum
Crystal filter sideband suppression: 40 db minimum
Harmonic Levels:
====================
2nd -63dBc
3nd -59dBc
4th -76dBc
5th <-90dBc
6th -82dBc
7th -80dBc
8th <-90dBc
9th <-90dBc
Built in microphone, LED transmit indicator and mini CW key-button on top panel
RECEIVER SPECIFICATIONS
--------------------------------------------
Receiver method: Single conversion superhet
Sensitivity: S/N 15db at 0.5uV input : Attenuator in 0.22uV
Selectivity: -6dB 2.39kHz : -60db 4.55kHz
Blocking: Measured as increase over 12dB SINAD level of interfering
signal with an unmodulated carrier, causing 6dB degradation in 12dB
SINAD on-channel signal:
Separation Rejection
=====================================
+/- 10kHz 72.5dB
+/- 100khZ 76.0dB
+/- 1Mhz 91dB
+/- 10MHz 93.5dB
IF and Image Rejection: Increase in level of signals at the first
i.f. image frequency, and at the i.f. it self (11.2735), over level
of on-channel signal to give identical 12db SINAD signals:
Image <100dB
IF 73dB
3rd Order Intermodulation Rejection: increase over12dB SINAD level
of two interfering signals giving identical 12dB SINAD on-channel 3rd
order intermodulation Product, 10KHz signal spacing:
Attenuator Out 53.0dB
Attenuator In 60.5dB
Intermediate frequency: 11.2735 MHz
RX Includes: Crystal filter, AGC, noise blanker, built in S-meter
LOCAL OSCILLATOR
-------------------------------
Oscillation method: Variable crystal
CRYSTAL SPECIFICATIONS
----------------------------------------
For MX-28S:
Funamental mode
60 pF internal capacitance
0.0010 % tolerance
HC-25 case
-----------------
Top panel: Rit. , AF volume, Tuning, Noise blanker, Crystal switch, S-meter, External Speaker and Microphone jack, mini CW key-button, BNC antenna jack.
Bottom panel: Power supply in, Charging switch, RF Attenuator, SSB/CW mode switch, Jack for external key.
Optional Mizuho Accessories
-------------------------------------
Telescopic whip antenna AN-..series, CW side-tone unit CW-2S, 10 Watt linear PL-.. series amplifier, AC power supply, DC-DC converter PM-1, Carrying case, speaker mike, Mobile rack.
All rights reserved to Junichi / JL1KRA
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