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。

For this transceiver I used a very high Q to get as little bandwidth as possible to protect the NE612 mixer from too high out of band broadcaster signals. The winding data: 28 turns (7 turns per chamber) primary, C par. =56 pF.

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.

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.

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.

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。

No tune FM demodulator using an NE602 or any of its derivatives like the NE612, SA602, and SA612. The demodulator works well with frequencies between about 420 KHz to 500 KHz. The required input level is between 0.5 Volts peak-to-peak and 2 Volts peak-to-peak.

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 ...

2018年6月6日 · The NE612 is a child of the popular NE602 chip, which contains a Gilbert-cell mixer, and an oscillator that makes building a receiver much easier than it has been in the past. The chips are set...