The component is supplied in tape and reel, ready to use in automatic pick and place SMT machines. In a time signal receiver circuit, the antenna is the biggest component used, PREMO has miniaturized it enough (75mm x 15mm x 6.3mm) to develop low profiles PCB's with 100% integration level, avoiding flying wires or manual assemblies in the complete process.
There are several clock signal transmitters in different countries: DCF77-77.5kHz (Germany), HBG-75kHz (Switzerland), MSF-60kHz (United Kingdom), TDF-162kHz (France), JJY-40&60kHz (Japan), WWVB-60kHz (USA).
Standard SMD version of this radio clock antenna at 40, 60 and 77.5 kHz are available. The component is configured as L-C resonant parallel tank (RCA-SMD-77A: 1.3mH // 3.3nF for 77.5 kHz and RCA-SMD-60A: 2.1mH // 3.3nF for 60 kHz) which offer a higher resistance (more than 75 kOhms) at resonance frequency (+/- 0.2 kHz).
The antenna is shipped already tuned to the resonant frequency specified. The fine tuning process is done in the PREMO production line by a high reliable automatic station. This station check the antenna in real-time, achieving a high precision in the center frequency tuned.