The Sielco EXC19/13-25 STL Transmitter is a modern direct-synthesis, frequency-agile broadcast quality STL (Studio to Transmitter Link), which may be factory preset on a very wide frequency range from VHF to SHF in the frequncy range of 1.3 - 2.5GHz.
 
The design of this equipment derives from a refinement of the time and field proven EXC/RTX18 series, coupled with the extended digital control features introduced on EXC25 and EXC30GT FM transmitter. Both transmitter and receiver offer full digital readout and complete and intuitive front panel control through a simple single jog coupled with extensive remote programmability and monitoring. 
 
They are designed in an elegant, and modern looking and 1U format for 19" rack mounting with its space saving design,

The excellent modulation characteristics, i.e. low noise, distortion and broad pass-band, the performance of the optional internal stereo-encoder and decoder, the on field programmability, makes the EXC/RTX19 a superior choice for a broadcast-grade Studio to Transmitter link, with reliable and maintenance-free operation.
 
An optional stereo encoder is also available.
 
Factory preset frequency ranges

1350-1375 MHz
1370-1390 MHz
1429-1433MHz
1510-1530MHz
1660-1670MHz
1700-1725MHz
1725-1750MHz
2367.5-2372.5MHz
2440-2.450MHz
2468.1-2483.3MHz
Sielco designs and produces FM radio transmitters for professional broadcasting. Their in-house laboratory develops standard and customised solutions to meet all needs. Whether digital or analogue, each product is designed to ensure reliability, long service life and a high standard of safety. Sielco transmitters are distributed throughout the world and serve many Radio stations in Europe, South America, Africa, Oceania and China.
 
Sielco's history in the field of radio broadcasting began in 1980, when the company was known as Siel, and continues today, as part of the Meg Italia group. Over the several decades, Sielco has developed extensive and customised broadcasting solutions, in order to meet the needs of broadcasters worldwide
 
Sielco's strength is the continuous assistance it offers to it’s customers, who can count on pre-sales advice and on post-sale update operations and optimisation, so as to always be able to transmit in total safety and with optimal performance, reducing consumption to a minimum.
Sielco solutions are constantly evolving to guarantee compliance with all current regulations.