Home News Photo Gallery Mizuho Factory Tour Purchase Links

SB Series Antenna Couplers Accessories Amplifiers FX Series P Series

DC Series and MK-610 Kits Radio Direction Finding Equipment MX-606D TRX-100 and RX-100 Dentron MLX-Mini

MX Series handhelds


Mizuho MX-21S Specifications:

Frequency Coverage: Any two 50kHz segments in the 21.00 to 21.45 MHz amateur band
Frequency Control: VXO; Maximum +50kHz per channel
No. of Channels: 2
Frequency Stability: ±500Hz from a cold start
      ±100Hz/30 Minutes at 25°C
Antenna: 50 Ohms unbalanced, BNC connector
Power requirements: 8.4-9.0VDC
Power consumption: 70mA at Receive (no signal); 620mA at Transmit
Size: 1½"(D) x 2 5/8"(W) x 5 5/8"(H) without knob
       39mm (D) x 66mm (W) x 142mm (H)
Weight: 590g; 710g with batteries and antenna

Operating modes: A3J (USB), A1 (CW)
Maximum Output Power: 2W
Spurious Output: Greater than 40dB down
Sideband Supression: Greater than 40dB

Receiver Sensitivity: Less than 0.5µV for 15dB S/N

Mizuho MX-21S top view Units marketed by JIM (Santec) have the model number MX-21S(T), but are otherwise identical to the MX-21S.

Manual (PDF format)
Schematic Diagram and Data Sheet (PDF format - high resolution)
Crystal Ordering Chart (PDF format)
AN-21 Telescopic Antenna Data Sheet (PDF format)

-Last updated 9 July 2006