Transcription of ノイズキャンセラの試作 - yacc.co.jp
1 1 7 S5 7 S9 RX S S5 9 TS830 S9 30k 40kHz 5kHz 6kHz S9+ QSO TS-830 IF 30 MFJ ANC-4 Ham Journal No 96 JA1DI OM BC-312 BC-342 noise-suppression circit VK5BR Homepage VK5BR ( JA1 VCW2 1 2 A Ant1 B Ant2 SG A B MS68B3 S VR max VR minA- 6VR B ope n- 180 - 6 dB VR - 1 3 dB)
2 Con n A- 6B GND- 25 0 dB B- 3A ope n VR - 1 3 dB- 21 off -2 5 dB Con n B- 3A GN D- 21 off -2 5 dBA= BA ope n Con n A- 24 off -1 7 dBA= BA GN D Con n B- 30 off -1 7 dB SPA SG SPA 0dB A=B A B A SW off FET -13dB VR VR -13dB A=B -40dBm Noise Canceller +Amp+ ( 2SK125*2 3 = 7 MHz 50 MHz 10m 2 SW2 VR2 TS-830 on ) TS-830 TS-830 TS-830 NB VR 2 RMS on )
3 4 FET IMD VR 1 + VR 13dB VR 200 500 VR 500 -3dB -27dB VR -18dB VR 13dB VR ampA Ant1 B Ant2 AB A.
4 B SW 5 20dB 3dB 2012 ANC-4 OM AC AC 50 MHz DP AC OM 10 TBS 10km VR VK5BR 2 2SK125 AC 100pF 6 Ham Juornal 7 BABA VR spice 500us ABR2=500 ABR2=1 175ns8 MFJ ANC_4 VK5BR 9 OFF ON
5 WaveSpectra on/off on off 7 MHz
