OPTIMA
GENERAL SPECIFICATIONS
Frequency Coverage
: Transmit and Receive .................................. 24.500 to 29.999 MHz
Antenna Impedance
: 50 ohm, unbalanced
Frequency Control
: Digital Phase-Lock Loop (PLL) Synthesizer
Frequency Accuracy
: Better than +10 ppm from 0 - 40
0
C after 15 min. warm up
Power Requirement
: 12 - 13.8 V DC, negative ground
Current Consumption
: 8 amps maximum
Dimensions
: 6 x 2 x 9.5 in (W x H x D)
Weight
: 2.9 lbs
Shipping weight
: 2.050 Kg
TRANSMITTER SPECIFICATIONS
Power Output : SSB / FM............................................................................... 50 Watts PEP
: AM ..........................................................12 Watts Average / 50 Watts PEP
Tuning Steps
: 1 kHz / 5khz / 10 kHz / 100 kHz (5khz default)
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
: +/- 2 kHz maximum
Audio Response
: More than 30dB below peak output
Frequency Response
: 400 to 2800 Hz
Microphone Impedance
: ECM, 600 to 1K ohms
RECEIVER SPECIFICATIONS
Circuit Type
: Dual-Conversion Superheterodyne
Intermediate Frequencies
: 1st IF / SSB IF .................................................................. 10.695 MHz
: 2nd IF ..................................................................................... 455 kHz
Sensitivity
: SSB............................................................. 0.23 μV at 10 dB S + N/N
: AM ................................................................ 0.23 μV at 10 dB S + N/N
: FM................................................................... 0.3 μV at 12 dB SINAD
Selectivity
: SSB................................................ 4.2 kHz (-6 dB) / 8.5 kHz (-60 dB)
: AM / FM .......................................... 6.0 kHz (-6 dB) / 18 kHz (-60 dB)
Clarifier Range : +/- 3.0 kHz
Adjacent Channel Rejection
: Better than 70 dB (with further improvement when 2
nd
IF filter engaged)
IF Rejection
: Better than 80 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
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