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  • Radio Remote Control using DTMF

    Here is a circuit of a remote control unit which makes use of the radio frequency signals to control various electrical appliances. VN:F [1.6.9_936]please wait…Rating: 0.0/10 (0 votes cast)VN:F [1.6.9_936]Rating: 0 (from 0 votes)

  • Powerful AM transmitter

    The circuit for a powerful AM transmitter using ceramic resonator/filter of 3.587 MHz is presented here. VN:F [1.6.9_936]please wait…Rating: 0.0/10 (0 votes cast)VN:F [1.6.9_936]Rating: 0 (from 0 votes)

  • 40 meter Direct Conversion Receiver

    Using the circuit of 40-metre band direct-conversion receiver descr- ibed here, one can listen to amateur radio QSO signals in CW as well as in SSB mode in the 40-metre band. VN:F [1.6.9_936]please wait…Rating: 0.0/10 (0 votes cast)VN:F [1.6.9_936]Rating: 0 (from 0 votes)

  • Remote control using VHF modules

    A few designs for remote control switches, using VG40T and VG40R remote control pair, are shown here. VN:F [1.6.9_936]please wait…Rating: 10.0/10 (1 vote cast)VN:F [1.6.9_936]Rating: 0 (from 0 votes)

  • Long range FM transmitter

    The power output of most of these circuits are very low because no power amplifier stages were incorporated. VN:F [1.6.9_936]please wait…Rating: 0.0/10 (0 votes cast)VN:F [1.6.9_936]Rating: 0 (from 0 votes)