All major RF sites require some sort of distribution system to ensure all receivers are supplied with usable signals. JAG RF stocks receiver multicouplers of all types and makes. A receiver multicoupler takes the one or more signals received at the antenna and send them through a filter (not always), amplifier, and power divider. The RF power is divided evenly through this last stage and can now feed a number of receivers simultaneously. Depending on the customers needs, the exact system gain can be configured for unity or 1dB, 2dB, 3dB or more; however, unity gain is usually sufficient as to much gain could desensitization the receivers. JAG RF ensures all multicouplers are with specified operating parameters after refurbishing.

Sinclair’s ‘C’ series multicouplers are ideal for multicoupling transmitters and or receivers where significant future expansion is anticipated. These multicouplers usually consist of one reject cavity and one or more band-pass cavities (usually 3 for most systems). The ‘C’ series work without requiring critical length cables between channels which makes them ideal for field technicians to work with on site. TXRX makes a similar style of multicoupling system for both transmit and receive scenarios. However, interfacing Sinclair’s and TXRX’s multicoupling systems has proven difficult and customers are advised when designing multicoupled sits to chose one company to keep cabling and future expansion simple. JAG RF can customize multicouplers by adding additional cavities or other special filtering and mounting to suit any customer’s needs.

If a multicoupler’s physical size is an issue due to limited rack space, then Sinclair’s Res-lok ‘C’ series multicouplers are an option. These multicouplers are a relatively good substitution for the larger round cavity multicouplers discussed previously, but they have lower power handling capability and frequencies must be spaced further apart in order to operate properly. JAG RF can customize these multicouplers by joining two or more units together to increase selectivity or we can combine them with isolators and harmonic filters to assist in additional transmitter-to-transmitter isolation. JAG RF can also make custom loops to achieve higher selectivity or a wider pass-band.

TXRX manufactures an expandable multicoupler system similar to Sinclair’s that JAG RF sometimes stocks. Even though we do not keep TXRX multicouplers in stock regularly we are can still provide support for these units from tuning to loops to systems design. TXRX’s T-PASS expansion system has been designed to meet the needs of multicoupler site owners and operators. Expanding or modifying the system is a simple field procedure. Whether a customer is adding a second or tenth channel, the procedure is the same.