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FreeDV


Install of FreeDV
ソフトウェアの導入はJA4JOE OMのインストールガイドをを読み進めました
FT8の導入解説などアマチュア無線全般について詳しい解説で大変素晴らしいサイトです

FreeDV INDEX
SOUND SETTINGS
AUDIO FILTER (BUILT IN)
AUDIO FILTER FOR PC(Equalizer APO)
QSO RECORDS and THOUGHTS


FreeDV


IC7300+FreeDV
CAT PORT設定
PTT&CAT: (COM3)
Silicon Labs CP210x USB to UART Bridge(COM3)
2025.4.16


SOUND SETTINGS

SOUND INPUT/MIC
Sound input is set to MIC.
My PC picks up my voice and carry them to TRX throgh USB audio codec.



SOUND OUTPUT/SPEAKER
(Realtech(R) Audio)
Sound output is set to Speaker.
I hear the voice of my partner from the speaker of PC.




TX AUDIO FILTER(BUILT IN)

BUILT IN FILTER
(TOOL->FILTER)

今のところフラットにしています。
TX帯域幅を2kHz以下とする必要があるバンドにQRVする時に考えます
AUDIO GAIN,FILTER SETTINGS
increased GAIN but It's flat now. Apr,19 2025



TX AUDIO FILTER(ADD APPLICATION)


Added FILTER APPLICATION
[Equalizer APO]

送信周波数帯域幅を2kHzにするにはパソコンにもオーディオフィルターを
入れると良いそうです。Equalizer APOが良いらしい。
It's flat now. Apr,19 2025




QSO RECORD and Thoughts

2025.4.20 TX FILTER
about BUILT IN FILTER on FreeDV and ADD APPLICATION for PC SOUND INPUT
but I remain it to flat.


 2025.4.17 1st FreeDV QSO on 40m Band
確かに奇麗な音声でした。DX、S/Nが低くても海外に届くでしょうか?
Tnx fer a nice 1st FreeDV QSO, JJ1BWR OM.
Really nice sound on my 1st FreeDV QSO. It was amaging.
I am looking forward to have a contact with DX stations someday.