The KE and KV analog STL Series are the best audio quality links for contribution and/or distribution broadcasting networks.

Highlights:

• Synthesized from 48 to 1020 MHz ( /1B, /FM, /3B, /4B, /5B, /GHz models) and from 1.2 to 2.7 GHz ( /2G models). The transmitted and received frequency can be easily set by internal dip - switches.

 

• Excellent stereo separation. A built-in group delay and amplitude precorrector guarantees a very low phase distortion and a great stereo separation in the whole audio band.

 

• Suitable for digital audio. The subsonic over-modulation and the low frequency phase distortion are controlled by a feedback circuit in order to exalt the audio quality of the latest digital studio equipment.

 

• Low THD distortion: the THD value with stereo or mono demodulated signals is negligible.

Low noise: the excellent signal to noise ratio either in mono or in stereo allows the use of this STLs in multi hops networks without decreasing the audio quality.

 

• High sensitivity: it allows to reduce the STL's antennas investment.

 

• Great RF immunity: allows to operate in most hostile RF environments.

 

• High adjacent channel rejection: obtained thanks to the excellent mechanical shielding and the precision of RF channel filtering.

 

• High frequency stability with the internal temperature compensated crystal reference.

 

• Full metering: complete diagnostic and measurement front panel displays are available.

 

• Meets or exceeds all FCC and CCIR requirements.

TECHNICAL SPECIFICATIONS

Frequency Range

KE/1B, KV/1B

48-80 MHz

KE/FM, KV/FM

80-108 MHz

KE/3B, KV/3B

160-300 MHz

KE/4B, KV/4B

300-512 MHz

KE/5B, KV/5B

512-830 MHz

KE/G, KV/G

830-1020 MHz

KE/2G, KV/2G

1.1-2.7 GHz

Composite Frequency response

± 0.1 dB typ. from 16 Hz to 53 kHz, 0.5 dB up to 100 kHz

Mono Frequency response

±0.5 dB from 20 Hz to 15 kHz

Stereo separation

≥ 58 dB (from 15 Hz to 15 kHz)

Stereo cross talk

≥ 55 dB

Signal to Noise Ratio (mono) (-50 dBm received)

≥ 72 dB with 75 kHz dev. deemphasized

Signal to Noise Ratio (stereo) (-50 dBm received)

≥ 68 dB with 75 kHz dev. deemphasized

THD (stereo)

< 0.1 %

THD (mono)

< 0.1 %

IMD (two tone ΔF= 1 kHz)

D2 ≤ 0.09%, D3 ≤ 0.06% (from 15 Hz to 15 kHz)

TRANSMITTERS SPECIFICATIONS

Power outputs (continuously adjustable from 0 to nominal power)

KE/1B

15 W

KE/FM

30 W

KE/3B

15 W

KE/4B

15 W

KE/5B

15 W

KE/G

8 W (25 W on request)

KE/2G

2 W

KE5/2G

5 W (10 W, 25 W on request)

Input connectors

XLR, 600 Ω for mono or stereo (Left&Right) BNC, 10kΩ for MPX

Output connector

N female, 50 Ω

Modulation

FM

Pre-emphasis

0 / 50 / 75 µs

Spurious and harmonic

below FCC and CCIR requirements

Syncronous AM S/N Ratio

≤ -60 dBc with dev. ±75 kHz

Asyncronous AM S/N Ratio

≤ -70 dBc respect to 100% AM mod.

Capability

1 mono/stereo program, up to 3 SCA (optional)

Metering

output level, peak modulation, diagnostic functions

Frequency setting

Internal dip-switches

Dimensions:

depth 483 mm (19") x 2 U (standard rack unit)

RECEIVERS SPECIFICATIONS

Monoaural Sensitivity

8 µV for S/N 52 dB, 16 µV/60 dB, 200 µV/70 dB, 1 mV/78 dB

Composite Sensitivity

8 µV for S/N 40 dB, 16 µV/42 dB, 150 µV/60 dB, 1 mV/72 dB

Noise figure

(RFin = 2mV) < 8 KTo

Selectivity

± 160 kHz at -3 dB IF BW, ± 500 kHz at -78 dB IF BW

Metering

RF input level, peak modulation

Frequency setting

Internal dip-switches

RF input

N female, 50 Ω

Image rejection

> 68 dB

Squelch threshold

adjustable from 8 µV

Outputs

composite, monoaural, IF 10.7 MHz

Dimensions:

depth 483 mm (19") x 2 U (standard rack unit)

AC POWER REQUIREMENTS

AC input voltage

115 / 230 VAC ± 15%, single phase.

AC supply frequency

50 Hz or 60 Hz, ±5%

ENVIRONMENT

Cooling

Forced air

Service

Continuous 24/24h

Operating temperature

-5°C to +45°C Derate 3°C per 500mt above 2000mt asl

Relative humidity

Up to 95%

© 2015 DB Elettronica Telecomunicazioni S.p.A.. All rights reserved.