| POWER
OUTPUT AVAILABLE: |
|
| Mod. LDT: |
0.5 W to 10 W, adjustable |
| Mod. LDT + LKA20 amp: |
20 W, adjustable |
| Mod. LDT + LKA35 amp: |
35 W, adjustable |
| LDT STL - TX SPECIFICATIONS: |
|
| Frequency Range: |
940 - 960 MHz directly digitally
programmable in 10 kHz increments (on request, any selected 15 MHz range between 220 MHz
and 440 MHz) |
| Frequency of Operation: |
Synthesized, microprocessor
controlled |
| RF Output Connector / Impedance: |
Type "N" female / 50
Ohm |
| Frequency Stability: |
Better than 1 ppm (+/- 1 kHz),
-10 to 50 C (14 - 122 F) |
| Modulation Type: |
Direct FM at the carrier
frequency |
| Asynchronous AM S/ N ratio: |
Better than -70 dB referred to
100 % AM, no de -emphasis |
| Synchronous AM S / N ratio: |
Better than - 50 dB referred to
100 % AM (FM modulation +/- 75 kHz at 400 Hz), no de-emphasis |
| Transient Intermodulation
Distortion: |
<0.1 % (typ. 0.05 %) measured
with a 3.18 kHz square wave & a 15 kHz sinewave, FM 75 kHz |
| Front panel displays: |
Frequency, Modulation, Fwd Pwr,
Ref Pwr, DC V, Current, Temperature, Alarms and Status indication for all functions |
| AC Power requirement: |
85 to 260 V, 50 or 60 Hz, single
phase, auto sensing, auto adjusting |
| AC Power Consumption: |
Approx. 60 VA |
| DC Power Consumption: |
24 V DC, approx. 2 A |
| Ambient Temperature Range: |
-10 to 50 C (14 to 122 F) |
| Spurious and Harmonic Emissions: |
Meets or exceeds all FCC and CCIR
requirements |
| Modulation Capability: |
MPX / Composite program + RDS/
RBDS + 2 SCA Subcarrier channels |
| Audio Inputs: |
MPX / Composite: Unbalanced BNC
and Balanced XLR (selectable) Mono: Balanced XLR SCA / RDS / RBDS: Unbalanced BNC
(2) (models with built-in optional Stereo Generator Card only) All levels adjustable
from -20 dBm to + 13 dBm, typically set for 3.5 Vp-p (1.237 Vrms / 4.1 dBm) Pre-emphasis
(75 microseconds for FCC, 50 microseconds for CCIR), defeatable for flat inputs |
| RF Monitor: |
BNC, approx. -30 dB |
| Interlock: |
BNC, mutes RF when grounded |
| Serial Interface: |
DB9 female RS 232 |
| Telemetry & Remote Control: |
DB15 female |
| Composite FM S/N Ratio: |
Better than 80 dB below 75 kHz
deviation measured in a 40 Hz to 75 kHz bandwidth, de-emphasis, RMS detector |
| Composite Total Harmonic
Distortion: |
Better than 0.1 % |
| Stereo Separation: |
Greater than 65 dB |
| Composite Amplitude Response: |
+/- 0.2 dB or less, 40 Hz - 53
kHz +/- 0.3 dB or less, 53 kHz - 100 kHz |
| Front Panel Size: |
483 mm (19") W x 88 mm
(3.5") H (2 standard rack spaces high) |
| Overall Depth: |
344 mm (13.5") |
| Net Weight: |
6 kg (13.2 lbs) |
| Options include: |
available Built in Stereo
Generator Card |
| LDR STL- RECEIVER SPECIFICATIONS: |
|
| RF Input Connector / Impedance: |
Type "N" female, 50 Ohm |
| Frequency Range: |
940 - 960 MHz directly digitally
programmable in 10 kHz increments (on request, any selected 15 MHz range between 220 MHz
and 440 MHz) |
| Sensitivity: |
Monaural, -67 dBm for > 68 dB
S/N RMS, de-emphasized, 75 kHz deviation; Composite, -47 dBm for > 68 dB S/N RMS,
de-emphasized, 40 Hz to 15 kHz ; Stereo (Left and Right Channel, decoded,
de-emphasized), -47 dBm for > 62 dB S/N RMS |
| Composite Total Harmonic
Distortion: |
0.4 % or less |
| Composite amplitude response: |
+/- 0.2 dB or less, 40 Hz to 53
kHz +/- 0.6 dB or less, 53 kHz to 100 kHz |
| Stereo Separation: |
Greater than 50 dB @ 1 kHz;
Greater than 40 dB 50 Hz to 15 kHz |
| Crosstalk: |
Main to Sub / Sub to Main,
Greater than 45 dB |
| Selectivity (static): |
-20 dB @ 200 KHz; -35 dB @ 300
KHz; -55 dB @ 400 KHz |
| LCD Displays: |
Frequency, Modulation, RF Signal
Level, Alarms & Status indication for all functions |
| Audio Outputs: |
Mpx / Composite: Unbalanced BNC
and Balanced XLR (selectable); Mono: Balanced XLR; SCA / RDS / RBDS: Unbalanced BNC;
L&R Channels: Balanced XLR Outputs (models with built-in optional Stereo Decoder Card
only) |
| 10.7 MHz IF Monitor: |
BNC connector |
| RS232: |
DB9 |
| Telemetry & Remote Control: |
DB25 |
| Levels: |
All levels adjustable from -20
dBm to + 13 dBm, typically set for 3.5 Vp-p (1.237 Vrms / 4.1 dBm) |
| Temperature Range: |
-10 to 50 C (14 to 122 F) |
| AC Power requirement: |
85 to 260 V, 50 or 60 Hz, single
phase, auto sensing, auto adjusting, approx 20 W |
| DC Power Input: |
24 V DC, approx. 0.5 A |
| Front Panel Size: |
483 mm (19") Wx88 mm
(3.5") H (2 Standard rack spaces high) |
| Overall Depth: |
344 mm (13.5") |
| Net Weight: |
5.5 kg (12.1 Lbs) |
| Options include: |
Available Built-in Stereo Decoder
Card |
