2020年2月23日 · The well-known mixer NE612 (NXP) will be compared to an AN612 (Matsushita/Panasonic) mixer that has been unsoldered from an old CB-SSB-radio. Comparison will include output voltage level and spectroscopic analysis of a 9MHz SSB signal.

2007年6月30日 · 不用晶体滤波器法来产生ssb,边带抑制就会好控制很多了,不过成本也高不少. 可以用正交检波器来实现，例如rocky软件和40m的软件无线电套件就是用同相和正交分量来分离两个边带的。

Direct Conversion receivers are the most popular QRP receivers for the reception of SSB or CW modes. The availability of IC's, improves their performance, and reduces parts count, making them simple to build, and easy to use.

2016年9月22日 · NE612の入力ポートのバランス調整をすることでキャリアサプレッション（搬送波抑圧比）は、約37dBとなりました。 音声入力と受信入力を同一ポートにするとキャリアサプレッションが50dB近く得られますが、送信時の受信入力ミュートが必要となります。

2014年2月26日 · 無線機回路において周波数変換回路はif生成回路の他にプロダクト検波やssb変調などに適用され、非常に重要な回路であります。

2019年8月30日 · This article describes the construction of a high performance transmitter/receiver for SSB (voice) communication covering the 14MHz (20 meters) high frequency amateur radio band.

2020年1月22日 · Here a dual-gate MOSFET with gain control to gate 2 sets up the initial stage of the whole amplifier strip. The stage’s gain is set by a simple bipolar driver transistor controlled by a digital-analog-converter (DAC). A numeric value for each individual band is stored with in the EEPROM of the MUC.

The NE/SA612A is a low-power VHF monolithic double-balanced mixer with on-board oscillator and voltage regulator. It is intended for low cost, low power communication systems with signal frequencies to 500MHz and local oscillator frequencies as high as 200MHz.

2002年12月3日 · 新人继续问：ne612和ne612an有什么区别？ ne612的动态范围比ne602大多少？ 因为我这里的价格都一样。

The NE612, also known as the NE612A, is a versatile analog multiplier and mixer IC that is widely used in radio frequency (RF) and intermediate frequency (IF) applications. At its core, the NE612 functions as a balanced modulator and a mixer, allowing for the combination of multiple input signals and the generation of an output signal with ...