Home News Photo Gallery Mizuho Factory Tour Purchase Links

SB Series Antenna Couplers Accessories P Series MX Series handhelds FX Series

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

PL and LA Series Linear Amplifiers

Mizuho PL-6S 1W in, 10W out 6m linear amplifierMizuho has made a matching amplifier for almost every model of MX series handheld issued to date. This is the PL series of amplifiers. The PL-2 amplifier matching the older 200mW MX-2 2m handheld put out five watts, while all other PL series models put out 10 watts.






Specifications (PL-xxS):

Final stage: 2SC1945 x 1
Final stage input power & voltage: 20W 13.8V
Modes: SSB CW
Output power: 10W
Input power: 2W (HF models), 1W (PL-6S)
In/out impedance: 50 Ohms
Semiconductors: 4 transistors, 1 IC, 9 diodes
Current drain: 2.5A maximum
Power source: 13.8V DC
External dimensions: 110W x 39H x 142D mm
Weight: 520 grams (about 1.2 lbs.)
Additional circuit: TX/RX LED monitoring 9.5VDC input

PL-21S Schematic Diagram (PDF format - high resolution)
PL-21S Pictorial (PDF format - high resolution)

Mizuho PL-1000 1-2W in, 10W out multiband linear amplifierIn additon, Mizuho briefly made a multiband (6-80M) amplifier for the ham who has several MX series handhelds. The PL-1000 is extremely rare and sought after. It requires 2W input on 80,40,20,15, or 10 meters, and 1W on 6 meters for a rated 10W output. Actual output power as high as 18W has been measured on some bands. The amp does not work with the older 200-300mW handhelds, which provide insufficient drive power. It also does not work with the MX-18S 17 meter handheld.





Specifications (PL-1000):

Frequency: 3.5 - 50MHz
Final stages: 2SC1947 x 1, 2SC1945 x 2
Final stage input power & voltage: 20W 13.8V
Modes: SSB CW
Output power: 10W
Input power: 2W (HF), 1W (VHF)
In/out impedance: 50 Ohms
Semiconductors: 5 transistors, 2 ICs, 8 diodes, 2 LEDs
Current drain: 2.5A maximum
Power source: 13.8V DC
External dimensions: 110W x 40H x 190D mm
Weight: 750g

Manual (Japanese) and Schematic Diagram (PDF format - high resolution)


Mizuho LA-2X linear amplifierThe LA series of amplifiers matched older (1970s and early 1980s) Mizuho gear. At left is the LA-2X, the matching 10W amplifier for Mizuho's SB-2X 2m SSB/CW 1W portable transceiver. More information, specifications, and manuals on LA series amplifiers will be posted shortly.




PL-6S photo courtesy of Rodney Tom, KH7L/JJ0JIH

-Last updated 5/9/2003