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Diode Radio for Low Impedance Headphones – Circuit Schematic
Diode Radio for Low Impedance Headphones
The most commonly available headphones have an impedance of 2 × 32 ?, this relatively low value makes them unsuitable for such a design. However, with a...
fm radio receiver circuit with ic tda – Circuit Schematic
fm radio receiver circuit with ic tda
FM Radio Receiver IC TDA 7012T is very simple, but it has an FM radio receiver sensitivity and good selectivity. Single Chip FM Receifer cool name of IC TDA7012...
80 mhz 108 mhz fm transmitter circuit – Circuit Schematic
80 mhz 108 mhz fm transmitter circuit
FM transmitter or often called fm transmitter uses 2 transistors in this article uses 2 transistors 2n2222. If the fm transmitter is in use voltage supply of 9 ...
rf probe circuit – Circuit Schematic
rf probe circuit
Good information about RF Probe Circuit. You can learn and download RF Probe Circuit online.....
rf field strength meter circuit – Circuit Schematic
rf field strength meter circuit
Good information about RF Field Strength Meter Circuit. You can learn and download RF Field Strength Meter Circuit online here.....
200m fm transmitter simple circuit – Circuit Schematic
200m fm transmitter simple circuit
FM transmitter circuit very stable and simple given here. With an adaptive antenna, the transmitter can reach a range of about 200 meters. Transmitter met this ...
walter duo – Circuit Schematic
walter duo
This transceiver (combined transmitter and receiver) built by Walter KrG¤mbring uses an Auriel devices for transmission and reception. This device packs a bit ...
S53MV Notune SSB giga radio set – Circuit Schematic
S53MV Notune SSB giga radio set
This article is copied from replica sites to here in order to have a local and long living copy at hand. It seems like had radical rework done to it sometime in...
gps galileo dual rf front end receiver – Circuit Schematic
gps galileo dual rf front end receiver
Considering the technical requirements defined in the previous topic as the starting point, this topic will explain in detail the design of every block of the r...
dsb exciter – Circuit Schematic
dsb exciter
A wideband circuit design of a Double Sideband Exciter. The circuit can be used to generate a low level signal with suppressed carrier or with any percentage of...
IF Converter – Circuit Schematic
IF Converter
For those of us that cannot afford the high cost of some of these SDR radios there is hope. Here I describe an I. F. converter suitable for use with Boat Anchor...
48MHz Rx – Circuit Schematic
48MHz Rx
...
wt40 packaging – Circuit Schematic
wt40 packaging
The transmit / receive (T / R) switching is done by relay. Yes, there are more elegant and clever ways to do T / R switching, but they are usually employed to i...
2011 Rife Beam Ray System – Circuit Schematic
2011 Rife Beam Ray System
This document describes a Rife Beam-Ray system which was designed and constructed using the latest information available about Royal Rife`s actual frequencies. ...
simple tv audio video transmitter – Circuit Schematic
simple tv audio video transmitter
A very simple TV audio video transmitter circuit can be designed using this schematic diagram. This TV audio video transmitter circuit can be used to transmit v...
3cx3000f7 – Circuit Schematic
3cx3000f7
Photos, detailed descriptions and schematic diagrams of W2DTC`s homebrew 3CX3000F7 triode HF linear RF amplifier.....
20 amp output circuit – Circuit Schematic
20 amp output circuit
A series capacitor worked best for low impedance loads while a parallel capacitor was used to feed into high impedance loads. Today`s norm is a 50 ohm antenna a...
simple home made fm radio receiver – Circuit Schematic
simple home made fm radio receiver
L1 and L2 were made by wrapping three tight side by side loops around a sharpie marker, I also made L2 by wrapping about 8 inches of 35AWG magnet wire around a ...
HF to LF Converter – Circuit Schematic
HF to LF Converter
Any mode (e. g. CW, AM, SSB, FSK) which is initiated in the HF transmitter or transceiver can be regenerated at LF (100 to 200 kHz) using this simple converter....
SSB Modulator – Circuit Schematic
SSB Modulator
Circuit detail is shown in figure 3. The main elements of the system are a speech amplifier, the audio phase shift network with balanced driver circuit (N1A, N2...