19 KHz MPX Low Pass Filter

Circuit-Zone.com - Electronic Projects

Posted on Wednesday, April 28, 2010 • Category: FM Transmitters

This map, armored also enables automatic MONO / MPX through a low-pass filter, even with a multiplex on its entry by using an ON / ON, panning, the whole spectrum MPX more RDS is sent to the synthesizer, on the other hand when it is in a position MONO, the low-pass filter is activated and share its cutoff frequency at 15 KHz, only modulation G + D is sent to the synthesizer, as 19 KHz. 19 KHz carrier, the signal multiplex and subcarrier 57 KHz is thereby eliminated, which provides ease of use for example in a string of issue relay tuner, if the link between the issuer Departure and receiver re-issue was not of good quality stereo, you sufficient to switch to mono to improve sound quality, you can then connect the RDS encoder at the re-issuer.

1 Watt FM Transmitter Booster

4km FM Transmitter

1 Watt FM Amplifier

MC145170 PLL FM Transmitter

Simple DIY FM Transmitter

Coilless FM Transmitter

Simple FM Radio Bug

Simple FM Transmitter with BC549

Wireless PLL Stereo FM TX with LCD

40 Watt FM Transmitter Amplifier

19 KHz MPX Low Pass Filter

Build Accurate LC Meter and start making your own coils and inductors. This LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils. LC Meter can measure inductances starting from 10nH - 1000nH, 1uH - 1000uH, 1mH - 100mH and capacitances from 0.1pF up to 900nF. The circuit includes an auto ranging and reset function to make sure the readings are as accurate as possible ... [more]