The QRM canceller is inserted from the trx into the antenna's feeder without any additional modifications to the radio.
The box has a built-in PTT control that keeps the canceller connected during transmission.
However, an additional auxiliary receiving antenna is required.
The two antennas received unwanted signals, resulting in different phases.
The QRM canceller now allows adjustment of the phase angle and amplification to cancel unwanted signals before they reach the receiver front end!
.Specifications:
PCB size: 73 * 85 * 1.6mm
Weight: 55g
Packing list:
You will get PCB (73*85*1.6mm) and all parts DIP:
100nF - 2pcs
100pF - 2 pcs
220uF-25V - 1 pc
33kOhm - 1 pc
Relay TIANBO HJR1 - 2pcs
1N4148 - 2 pcs
J310 - 2 pcs
Amidon BN-73-202 Potentiometr 5kOhm - 3 pcs
Inductor 470-1000 uH SMD 0805 22 Ohm - 2 pcs
82 Ohm - 1 pc
1 MOhm - 1 pc
3 kOhm - 1 pc
100nF - 4 pcs
1N4148 - 8 pc
BC817 - 1 pc
Note:
Due to manual measurement, it may vary from 1 cm to 3 cm. Color deviation might exist due to different monitor settings and light, please kindly understand.
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