RX-8MR50++
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Technical features are subject to change without notice. AUR°EL S.p.A does not feel responsible for any damage caused by the device’s misuse.
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Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY
Tel.: +39.0546.941124 Fax: +39.0546.941660
16/05/2020 - Rev.B
Pag 3 di 5
Picture 2: Suggested lay-out for the device correct usage
Antenna:
1. A whip antenna, 8cm long and approximately 1mm diameter, brass or copper wire made, must be
connected to the RF input of the receiver (pin 3).
2. The antenna body must be keep straight as much as possible and it must be free from other circuits or
metal parts (5cm minimum suggested distance).
3. It can be utilized either vertically or horizontally, provided that a good ground plane surrounds the
connection point between antenna and transmitter output.
50 Ohm line:
1. It must be the shortest as possible.
2. 1,8mm wide for 1mm thick FR4 printed circuits and 2,9mm wide for 1,6mm thick FR4 printed circuits.
On the same side, it must be kept 2mm away from the ground circuit.
3. On the opposite side a ground circuit area must be present.
Antenna connection:
1. It may be utilized as the direct connection point for the radiating whip antenna.
2. It can bear the connection of the central wire of a 50Ω coaxial cable. Be sure that the braid is welded to
the ground in a close point.
N.B.: As an alternative to the a.m. antenna it is possible to utilize the whip model manufactured by Aurel
(see related Data Sheet and Application Notes).
By fitting whips too different from the described ones, the EEC Certification is not assured.
Other components:
1. Keep the receiver separate from all other components of the circuit (more than 5mm).
2. Keep particularly far away and shielded all microprocessors and their clock circuits.
3. Do not fit components around the 50Ω line. At least keep them at 5mm distance.
If the antenna connection is directly used for a radiating whip connection, keep at least a 5cm radius free
area. In case of coaxial cable connection 5mm radius will suffice.
