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Last modified 2022-06-05

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Dak Mark X (By M.H. Scott Co. Inc.)

A picture of Dak Mark X (By M.H. Scott Co. Inc.)


Type:Citizen band transceiver
Frequency range:26.965-27.405 MHz
Channels / tuning steps:40
Mode:AM / SSB
Frequency control:PLL (MC145109)
Frequency stability:?%
Clarifier or Delta tune:600 Hz
Power supply:Mains: 105-120 VAC (Fixed power cord)
Current drain / power consumption:RX: ? W
TX: ? W
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):? mm (?")
Weight:? Kg (? lb)
Other features:ANL/NB. SWR meter. Fast/slow AGC.

Receiver system: Single conversion superheterodyne (SSB)
IF: 10.695 MHz
Double conversion superheterodyne (AM)
1st IF: 10.695 MHz
2nd IF: 455 KHz
Sensitivity: AM: 1 uV (10 dB S/N)
SSB: 0.25 uV (10 dB S/N)
Selectivity:AM: 6 KHz (-6 dB)
SSB: 2.4 KHz (-6 dB)
Image rejection:
AF output power / speaker:3 W at ?% distortion / 8 ohm
External speaker connector:1/4"

RF output power: AM: 4 W
SSB: 12 W (PEP)
Modulation system: AM: High level pushpull modulator
SSB: Double balanced modulator with crystal lattice filter
FM deviation (Factory set):No FM
Spurious emissions:Better than -60 dB
Microphone impedance / connector:? ohm / 4-pin (Metal locking ring connector)
Microphone input level:? mV

Manufactured:Korea, 1978-197x (Discontinued)
Main PCB:DT-219M (Cybernet clone)
Sub PCBs:
Additional info:A large and unusual tube hybrid
Related documents: User manual (8.2 MB)
PLL: MC145109
Sams Photofact #:CB-276 (October 1979)
Modifications and fixes:
Options / Accessories:
DM100 Dynamic desk microphone with preamp
A rear picture of Dak Mark X (By M.H. Scott Co. Inc.)