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Last modified 2022-11-08

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Major M-588 (By Ham International)

A picture of Major M-588 (By Ham International)


Type:Citizen band / "Freeband" / Export transceiver
Frequency range: 26.965-27.855 MHz in two bands
Lo:   26.965-27.405 MHz
Hi:   27.415-27.855 MHz
Channels / tuning steps:80 (2*40)
Mode:AM / FM / SSB
Frequency control:PLL (PLL02A)
Frequency stability:0.005%
Clarifier or Delta tune:? Hz
Power supply:13.8 VDC (2-pin connector)
Current drain / power consumption:RX: 0.35-1.5 A
TX: Max 2.4 A
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):? mm (?")
Weight:? Kg (? lb)
Other features:PA. ANL/NB. Local/DX switch.

Receiver system: Single conversion superheterodyne (SSB)
IF: 10.695 MHz
Double conversion superheterodyne (AM/FM)
1st IF: 10.695 MHz
2nd IF: 455 KHz
Sensitivity: AM: 1 uV (10 dB S/N)
FM: 0.5 uV (20 dB S/N)
SSB: 0.5 uV (10 dB S/N)
Selectivity: AM/FM: 6 KHz (-6 dB)
SSB: 2 KHz (-6 dB)
Image rejection:
AF output power / speaker:3 W at 10% distortion / 8 ohm
External speaker connector:3.5 mm, 8 ohm

RF output power: AM/FM: 10 W
SSB: 20 W (PEP)
Modulation system: SSB: Double balanced modulator with crystal lattice filter
Max FM deviation (Factory set):1.5 KHz
Spurious emissions:Better than -? dB
Microphone impedance / connector:? ohm / 4-pin (Metal locking ring connector)
Microphone input level:20 mV @ 1.25 KHz for 1.5 KHz deviation

Manufactured:Japan, 19xx-19xx (Discontinued)
Main PCB:PTBM059COX by Cybernet Electronics Corporation
Sub PCBs: PTLD043AOX - LED channel display board
PTOS006AOX - VCO/PLL/crystal and FM-IF board
PTSW076AOX - Channel selector board
Additional info:
Related documents: User manual (8.2 MB)
Schematic diagram (5.6 MB) M-588 specific
Sams Photofact #:None
Modifications and fixes:
Options / Accessories:
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An inside picture of Major M-588 (By Ham International)