Optima MK3 Compact Amateur Radio


Optima MK3 Compact Amateur Radio





Frequency Coverage: 10/12 Meter
Antenna Impedance: 50 ohm, unbalanced
Frequency Control: Digital Phase-Lock Loop (PLL) Synthesizer
Frequency Accuracy: Better than +10 ppm from 0 – 40 °C after 15 min. warm up
Power Requirement: 12 -13.8 V DC, negative ground
Current Consumption: 9 amps maximum
Dimensions: 6 x 2 x 9.5 in (W x H x D)
Weight: 2.9 Ibs

Power Output: SSB/ FM…50 Watts, …AM..15 Watts RMS / 50 Watts PEP
Tuning Steps: 1 kHz /5Khz/10 kHz /100 kHz/1Mhz   5khz default step on power up
Final Transistors: IRF520 MOSFET (x2)
Spurious Emissions: More than 50 dB below peak output power
Carrier Suppression: More than 40 dB below peak output power
Unwanted Sideband: More than 50 dB below peak output (1 kHz tone)
FM Deviation: +/- 5 kHz maximum
Audio Response: More than 30dB below peak output
Frequency Response: 400 to 2800 Hz
Microphone Impedance: ECM, 600 to 1 K ohms

Circuit Type: Dual-Conversion Super-heterodyne
Intermediate Frequencies:
1st IF/SSB IF…10.695 MHz
2nd IF…455 kHz
SSB…0.25 V at 10 dB S + N/N
AM…1.0 V at10dBS+N/N
FM…0.3 V at12dBSINAD
SSB…4.2 kHz (-6 dB) / 8.5 kHz (-60 dB)
AM / FM…6.0 kHz (-6 dB) /18 kHz (-60 dB)
Clarifier Range: +/-1.5 kHz
Adjacent Channel Rejection: Better than 70 dB
I F Rejection: Better than 85 dB for all frequencies
Frequency Response: 250 to 3000 Hz
Audio Output Power: 2 watts minimum at 10% THD with an 8 ohm load
Audio Output Impedance: 8 ohms
RF Power Output 45W SSB (pep)/ 15W AM (rms)/ 45W FM (rms)
Dual Finals on Heat Sink with time delay off ptt controlled fan
Modes AM, FM, USB, LSB
Microprocessor Controlled
5 memories memory scan as well as full scan
Last Channel Recall
Frequency Scan
Variable RF Output Power all modes
Variable Mic Gain
Repeater offset…5khz-999khz +/- offset all bands all modes
5 Digit LCD Frequency Display
Scanning Microphone step in 1/5/10/100khz steps
Night Illuminated Display white led
Surface Mount Technology throughout
Dimensions 2(H) x 6(W) x 9.5(D) in


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