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Flexiva DX™

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Flexiva DX™ family — made up of the DX 10, DX 15 and DX 200-2000 kW solid-state AM transmitters — will stay on the air no matter how demanding the broadcast needs. Hundreds of broadcasters have benefited from the superior performance and reliability provided by patented digital amplitude modulation. Flexiva DX transmitters provide unsurpassed audio performance, improved coverage, simple operation, the lowest cost of operation and the highest reliability of any medium-wave transmitter. Extensive options are available to tailor the Flexiva DX system to facility needs, including both air- and liquid-cooling options.

A digitally modulated transmitter, the Flexiva DX system is ready for DRM (Digital Radio Mondiale) or HD Radio™. Simply add the appropriate exciter, and Flexiva DX is on the air in digital broadcast mode. Flexiva DX transmitters are also now able to provide IP-based control and monitoring using WEB Remote tied to the station's LAN or directly to the Internet.

Digital — Flexiva DX transmitters have Direct Digital Synthesis of the RF envelope using true digital modulation, not PDM
Reliable — Flexiva DX transmitters have set a new standard for RF amplifier reliability and ruggedness. The RF modules run exceptionally cool.
Simple — Simple to operate and maintain, Flexiva DX transmitters use standard off-the-shelf components, which are easily accessible and field repairable.
Efficient — Flexiva DX transmitters are proven to yield typical efficiency of over 83 percent, resulting in the industry’s lowest power cost.
Rugged — Failures are virtually eliminated through a patented lightning protection system. Built-in surge protection is standard on all AC mains lines and internal power supplies.
Redundant — In critical areas, Flexiva DX transmitters use redundant circuit designs. Soft failure and FLEXPatch reassignment ensure uninterrupted broadcasting without significant degradation in performance. Broadband, interchangeable RF amplifier modules simplify maintenance.
Future Compatibility — Future digital broadcast compatibility is ensured with high peak-to-average power capability, exceptional audio bandwidth and virtually no audio-to-RF group delay variation. Flexiva DX transmitters have been used for IBOC field tests.

GeneralType of ModulationGatesAir-patented AM Digital amplitude modulationTransmitter TypeMedium-wave, 100 percent solid statePower Output Range DX 101 to 11 kWDX 152 to 15 kWDX 200 to 200040 to 200 kWAll 3 models are capable of combined operation, 3 adjustable pre-set power levels are providedFrequency RangeDX 10/15531 to 1705 kHzDX 200 to 2000531 to 1620 kHzAll 3 models supplied, tuned and tested to 1 frequency, as specified AC Mains InputDX 10/15197 to 281 VAC, 3-phase, 341 to 468 VAC, 3 phase, 4 wireDX 200 to 2000380 to 20 k VAC, 3-phase user specified
360 to 500 VAC, 3-phase
190 to 260 VAC, single phasePower Supply VariationDX 10/15±10% voltage, 48 to 63 HzDX 200 to 2000+10/-15% voltage, 48 to 63 HzTransient ProtectionDX 10/15Meets IEC 587 requirementsDX 200 to 2000Meets ANSI/IEEE C62.41-1980 requirementsPower FactorDX 10/150.98% typicalDX 200 to 20000.95% typical, with optional correctionFrequency StabilityAll three models±10 Hz, 0 to 50° C,
±2 Hz at typical conditionsAudio InputAll three models-10 to +10 dBm, adjustable transformerless input; 600, 150, and 50 ohms terminators providedRF OutputDX 10/1515/8 in. EIA flangeDX 200 to 20004-1/16 in. EIA flange (female), 50 ohms unbalanced
Other impedances available upon request per quotationRF LoadDX 10/1550 ohms, unbalancedDX 200 to 200050 ohms, nominal
Front-panel matching adjustments
Antenna matching range 1.2:1
VSWR minimumCabinet and Harmonic/Spurious RadiationDX 10/15Meets FCC, CCIR and IC requirementsDX 200 to 2000Meets CCIR requirementsOverall AC EfficiencyDX 10/15Typically 83% at 10 and 15 kWDX 200 to 2000Typically 86% at 200 kWGeneral Specifications Specifically for DX 200 to 2000 kW ModelRF Monitor ProvisionsDX 200 to 2000Up to 10 V RMS RF modulated output sample (up to 6v pp constant sample level for high-, medium- or low-power settings)
5 V RMS RF frequency monitor samplePower ConsumptionDX 200 to 2000229.9 kW or less (typical) at 200 kW, 0% modulation;
348.8 kW or less (typical) at 200 kW, 100% tone modulationAudio PerformanceAudio Frequency ResponseDX 10/15+0.2/-0.8 dB, 20 Hz to 10 kHz, reference 1 kHz at 95% modulationDX 200 to 2000+0.2/-0.8 dB, 50 Hz to 10 kHz, reference 1kHzTotal Harmonic DistortionDX 100.8% or less at 95% modulation, 30 Hz to 10 kHz, at 10 kW; 0.5% typicalDX 151.0% or less at 95% modulation, 30 Hz to 10 kHz, at 15 kW, 0.3% typicalDX 200 to 20000.8% or less THD at 95% modulation, 50 Hz to 10 kHz at 200 kWIntermodulation DistortionDX 100.8% or less, 1:1, 60/7000 Hz; 1.3% or less 4:1, 60/7000 Hz; SMPTE at 95% modulation, no audio filters requiredDX 151.0% or less, 1:1, 60/7000 Hz; 1.4% or less 4:1, 60/7000 Hz; SMPTE at 95% modulation, no audio filters requiredDX 200 to 20001.5% or less, 1:1, 60/7000 Hz; 2% or less, 4:1, 60/7000 Hz; SMPTE at 95% modulation, no audio filters requiredTransient Intermodulation DistortionDX 100.3% or less at 95% modulationDX 152.96/8.0 kHz, 4:1, no audio filters required. 0.5% or less at 95% modulation, 2.96/8.0 kHz, 4:1, no audio filters requiredDX 200 to 20000.7% at 95% modulation, 2.96/8.0 kHz, 4:1, no audio filters requiredSquarewave OvershootDX 10/150.3% or less at 400 Hz, 85% modulation, measured pk-pk, no audio filters requiredDX 200 to 20001% or less at 400 Hz, 80% modulationSquarewave TiltDX 10/150.5% or less at 40 Hz, 80% modulation, no audio filters requiredDX 200 to 20002% or less at 50 Hz, 80% modulation, no audio filters requiredCarrier ShiftAll three modelsLess than 1%, referenced to 1 kHz, 100% modulationHum and Noise All three models-65 dB or better below 100% modulation (unweighted)Positive Peak Capability DX 10+145% at 10 kW; +125% at 11 kW (program modulation)DX 15+135 at 15 kW (program modulation)DX 200 to 2000+125%Duty CycleDX 10/15Continuous, 100% modulated sine waveDX 200 to 2000100% single tone for 10 minutes, followed by 75% single tone modulation for 50 minutes, at normal factory ambient temperatureAudio Performance Specifications Specifically for the DX 10/15 kW ModelsIQMDX 10/15: -32 dB at 1 kHz, 95% modulation; -40 dB typicalService ConditionsAmbient TemperatureDX 10/15-10° C to +50° C; derated 2° C per 1,000 feet (305 m) of altitudeDX 200 to 20000° C to +45° C, (derate 2° C/1,000 ft of altitude)Altitude DX 10/15Up to 13,000 ft (3,962 m)DX 200 to 2000Up to 6,000 ft (1,829 m); higher altitudes available on request for quotationHumidity RangeDX 10/150 to 95%, non-condensingDX 200 to 20000 to 95%, non-condensingDimensions (H x W x D)DX 10/1578 x 72 x 33 in. (198 x 183 x 84 cm)DX 200 to 200078 x 160 x 48 in. (198 x 406 x 122 cm)WeightDX 101,535 lbs. (698 kg)DX 151,700 lbs. (773 kg)DX 200 to 20005,450 lbs. (2,472 kg) unpackedService Conditions Specifically for the DX 10/15 kW ModelsTemperature Rise (Inlet/Outlet Air)DX 10/15: Approximately 6° CRF Monitor ProvisionsDX 10/15: Up to 10 volt RMS RF modulated output sample
(constant sample level at high-, medium- or low-power setting)
5 volt RMS RF frequency monitor sample, nominal over specified power rangePower ConsumptionDX 1011.6 kW typical at 10 kW, 0% modulation;
17.4 kW typical at 10 kW, 100% tone modulationDX 1517.4 kW typical at 15 kW, 0% modulation;
26.2 kW typical at 15 kW, 100% tone modulationNotes All measurements made into test load at rated power.Noise may degrade if AC lines are unbalanced.