Technické parametry QRP transceiverů MIZUHO (english)
Ponukam vsetkym technicke parametry QRP Transceivrov od Mizuho.
Models of Mizuho QRP Transceivers Available ——————————————————
MX-3.5S: 80 Meter Band 25Kc. per XTAL
MX-7S : 40 Meter Band 25Kc. per XTAL
MX-14S : 20 Meter Band 50Kc. per XTAL
MX-18S : 17 Meter Band 50Kc. per XTAL
MX-21S : 15 Meter Band 50Kc. per XTAL
MX-28S : 10 Meter Band 50Kc. per XTAL
MX-6S : 6 Meter Band 50Kc. per XTAL
Please note that each radio will take a maximum of two crystals at
any one time.It is a simple task to change crystals as they just plug
in the transceiver underneath the cover. ( no other adjustment
needed)
GENERAL SPECIFICATIONS OF TRANSCEIVERS
———————————————————————
Construction : Metal case throughout
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 / W-meter.
