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Flexiva 3DX®

The Flexiva 3DX™ family — comprising 25, 50 and 100 kW models — provides exceptional performance, efficiency and peace of mind. Flexiva 3DX digital, solid-state AM transmitters features Direct Digital Drive (3D) technology, which provides a host of capabilities and benefits, including elimination of the RF driver section. This enhancement results in simpler design, greater efficiency and improved reliability — ultimately reducing operational costs. In addition, comprehensive diagnostics, which show exactly how the transmitter is performing at all times, along with hot-pluggable power amplifier (PA) modules and unprecedented redundancy, make all three models of the Flexiva 3DX family exceptionally easy to service. Complete IP-based control and monitoring of Flexiva 3DX transmitters in any location is possible by using the WEB Remote system tied to the station's LAN or directly to the Internet. And because all Flexiva 3DX transmitters are digitally modulated, transitioning to DRM™ or HD Radio™ is effortless. Simply add the appropriate exciter, and Flexiva 3DX is on the air in digital broadcast mode.

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The Flexiva 3DX™ family — comprising 25, 50 and 100 kW models — provides exceptional performance, efficiency and peace of mind.

Flexiva 3DX digital, solid-state AM transmitters features Direct Digital Drive (3D) technology, which provides a host of capabilities and benefits, including elimination of the RF driver section. This enhancement results in simpler design, greater efficiency and improved reliability — ultimately reducing operational costs. In addition, comprehensive diagnostics, which show exactly how the transmitter is performing at all times, along with hot-pluggable power amplifier (PA) modules and unprecedented redundancy, make all three models of the Flexiva 3DX family exceptionally easy to service.

Complete IP-based control and monitoring of Flexiva 3DX transmitters in any location is possible by using the WEB Remote system tied to the station's LAN or directly to the Internet. And because all Flexiva 3DX transmitters are digitally modulated, transitioning to DRM™ or HD Radio™ is effortless. Simply add the appropriate exciter, and Flexiva 3DX is on the air in digital broadcast mode.

Patented Flexiva Direct Digital Drive modulation technology improves signal linearity and provides typical overall efficiency of 88%
Patented Digital Serial Adaptive Modulation (DSAM) makes the Flexiva 3DX family virtually auto-servicing
Hot-pluggable power amplifiers enable easy service without taking the transmitter off the air
Optional dual digital exciters, dual low-voltage power supplies, dual binary amplifiers and dual binary amplifier power supplies available — all with automatic switchover — deliver unmatched redundancy

Specifications and designs are subject to change without notice.

General
Type of Modulation	All Models: GatesAir-patented Direct Digital Drive Modulation
Transmitter Type	All Models: Medium Wave, 100% solid-state.
Power Output Range
3DX 25/50	10 to 27.5 kW and 10 to 55 kW
3DX 100	20 to 100 kW Each transmitter is capable of combined operation; three adjustable power levels are provided
Frequency Range	All Models: 531 kHz to 1,610 kHz. Supplied, tuned and tested on one frequency as specified
AC Mains Input
3DX25	208 to 240 VAC and 380 to 485 VAC (special order)
3DX50	380 to 485 VAC
3DX100	370 to 430 VAC and 460 to 500 VAC
Power Supply Variation	All Models: ±5% voltage, ±5% frequency meets full performance. +10/-15% voltage transmitter operational
Transient Protection	All Models: Meet ANSI / IEEE C62.41-1980 requirements; includes high-energy MOVs
Power Factor
3DX 25/50	0.97 typical
3DX 100	0.8 typically; 0.92 at 100 kW, 95% modulation
Frequency Stability
3DX 25/50	±2 PPM over frequency range, 0 to 50° C
3DX100	±2 PPM over frequency range, 0 to 50° C standard; ±0.25 PPM optional All Models: Higher stability is available with external reference
Audio Input
3DX 25/50	–10 to +10 dBm, adjustable transformerless input; 600 and 20 k terminators provided

Optional AES3 digital input, 110 ohms, -20 dBfs 3DX 100	-10 to +10 dBm, adjustable transformerless input; 600 and 20 k terminators provided. AES3 optional
RF Output
3DX 25/50	3-1/8” EIA flange, bullet provided
3DX 100	4-1/16” EIA flange, standard; 6 1/8” optional
RF Load	All Models: 50 ohms, fixed, unbalanced, resistive
VSWR
3DX 25/50	1.2:1 or better for full rated power. Typical 1.3:1
3DX 100	1.3:1 minimum
Cabinet and Harmonic/Spurious Radiation
3DX 25/50	Meets or exceeds FCC, IC and other world standards
3DX 100	Meets CCIR requirements
Overall AC Efficiency
3DX 25	85% or better at 25 kW, 87% typical
3DX 50	86% or better at 50 kW. 88% typical
3DX 100	86% or better at 100 kW. 88% typical
Audio Performance
Audio Frequency Response
3DX 25/50	+0.2/-0.8 dB at 95% modulation, 20 Hz to 10 kHz, reference 1 kHz
3DX 100	+0.2 / -0.8 dB at 95% modulation, 30 Hz to 10 kHz, reference 1 kHz
Audio Harmonic Distortion
3DX 25/50	0.7% or less at 95% modulation, 20 Hz to 10 kHz, ; 0.3% typical at 55 kw/25 kw respectively
3DX 100	0.8% or less at 95% modulation, 30 Hz to 10 kHz. 0.3% typical at 100 kW
Intermodulation Distortion
3DX 25	1.0% or less 1:1, 60/7000 Hz; SMPTE at 95% modulation, typical 0.4% 1:1, 1.0% 4:1 at 25 kW
3DX 50	0.8% or less1:1, 60/7000 Hz; SMPTE at 95% modulation, typical 0.4% 1:1, 1.3% 4:1 at 55 kW
3DX 100	1.0% or less 1:1 60/7000 Hz; 2% or less 4:1; SMPTE at 95% modulation, typically 0.4% 1:1, 0.7% 4:1
Transient Intermodulation Distortion
3DX 25/50	0.5% or less at 95% modulation, 2.96/8.0 kHz, 4:1, typically 0.3%
3DX 100	0.2% or less at 95% modulation, 2.96/8.0 kHz, 4:1, typically 0.3%
Squarewave Overshoot	All Models: 0.5% or less 400 Hz, 80% modulation, measured peak to peak, typically less than 0.3%
Squarewave Tilt
3DX 25/50	0.5% or less at 40 Hz, 80% modulation
3DX 100	1% or less at 40 Hz, 80% modulation
Carrier Shift
3DX 25/50	Less than 1% at 95% modulation at 1 kHz, typically less than 0.5% independent of ±5% AC main voltage variation
3DX 100	Less than 1% at 95% modulation at 1 kHz independent of ±5% AC main voltage variation, typically less than 0.5%
Hum and Noise
3DX 25/50	-65 dB or better below 100% modulation, reference 1 kHz (unweighted), typically –70 dB
3DX 100	-65 dB or better below 100% modulation, reference 1 kHz (unweighted), typically -68 dB
Positive Peak Capability
3DX 25/50	+145% or greater at 25 kW/55 kW respectively, audio program modulation, at nominal AC mains voltage
3DX 100	Maximum peak modulation 135% at 100 kW
Audio Performance Specifications for Flexiva 3DX 25 and 50 Only
IQM
3DX 25/50	-36 dB at 1 kHz, 95% modulation; -40 dB typical
Duty Cycle
3DX 25/50	Continuous 100% modulated sine wave
Service Conditions
Power Consumption
3DX 25	28.7 kW or less typical at 25 kW, 0% modulation; 43.1 kW or less typical at 25 kW, 100% tone modulation
3DX50	56.8 kW or less typical at 50 kW, 0% modulation; 85.2 kW or less typical at 50 kW, 100% tone modulation
3DX 100	113.6 kW or less typical at 100 kW, 0% modulation; 170.5 kW or less typical at 100 kW, 100% tone modulation
Ambient Temperature	All Models: 0° C to 50° C; derate 2° C per 1,000 ft (305 m) Above Mean Sea Level (AMSL)
Humidity Range	All Models: 0 to 95% non-condensing
Altitude
3DX 25/50	Up to 13,000 ft (3,962 m)
3DX 100	10,000 ft (3,048 m)
Size
3DX 25/50	Without fan/filter assembly: 198 cm H x 260 cm W x 105 cm D (78” H x 102” W x 42” D) With fan/filter assembly: 198 cm H x 260 cm W x 137 cm D (78” H x 102” W x 54” D)
3DX 100	Without fan/filter assembly: 198 cm H (without combiner cross over, 206 cm with combiner cross over) x 389 cm W x 107 cm D; 78” H (without combiner cross over, 81” with combiner cross over) x 153” W x 42” D). With fan/filter assembly: 198 cm H (without combiner cross over, 206 cm with combiner cross over) x 389 cm W x 137 cm D; 78” H (without combiner cross over, 81” with combiner cross over) x 153” W x 54.2” D)
Weight
3DX 25	1,506 Kg (3,320 lbs)
3DX 50	1,644 Kg (3,625 lbs)
Shipping	All Models shipped as three cabinets
DRM/HD Radio Compatibility
Magnitude Input Response	-3 dB maximum, up 50 kHz
Group Delay Variation	±2 uS, 200 Hz to 15 kHz
J3E Linearity Tests	-55 dB, 4/5 kHz equal tones -55 dB, 4/5 kHz tones, 5 kHz -1 dB relative to 4 kHz
NOTES
All measurements made into test load at full rated power. Noise may degrade if AC lines are unbalanced. Audio performance measurements made with standard audio input, no special filters required to obtain these specifications.