Wireless Set No 19 Group WS19
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Wireless Set No 19 Group WS19
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EMEM2 and EMEM3D frequency device construction and operation
The EMEM2 was invented by Dan Tracy. In a conversation with "Doug", the inventor of the large coil device, he commented that the EMEM2 does kill Lyme disease an...
EMEM2 and EMEM3D frequency device construction and operation
The EMEM2 was invented by Dan Tracy. In a conversation with "Doug", the inventor of the large coil device, he commented that the EMEM2 does kill Lyme disease an...
HF Direction finding
The main requirements are only a directional antenna (ie a ferrite rod or frame) and a screened case for the works of the set. In the past some competitors have...
HF Direction finding
The main requirements are only a directional antenna (ie a ferrite rod or frame) and a screened case for the works of the set. In the past some competitors have...
high-level accessory front end for the HF amateur bands
Here`s an antenna selector, Preselector, attenuator, preamplifier accessory for every HF amateur transceiver. It can improve your receiver`s IP2 for out-of-band...
high-level accessory front end for the HF amateur bands
Here`s an antenna selector, Preselector, attenuator, preamplifier accessory for every HF amateur transceiver. It can improve your receiver`s IP2 for out-of-band...
valved transmitter for 3.5 MHz
This transmitter project is a highly efficient, rugged and simple, low power c. w. unit delivering more than 10W. As it`s crystal controlled with stabilised h. ...
valved transmitter for 3.5 MHz
This transmitter project is a highly efficient, rugged and simple, low power c. w. unit delivering more than 10W. As it`s crystal controlled with stabilised h. ...
1.8MHz AM transmitter and receiver
Before starting on the receiver side of the` Chatterbox`, we ought to take a final look at the transmitter itself. The Chatterbox transmitter is built separatel...
1.8MHz AM transmitter and receiver
Before starting on the receiver side of the` Chatterbox`, we ought to take a final look at the transmitter itself. The Chatterbox transmitter is built separatel...
Understand Radio Architectures
The fundamental operation of an RF front end is fairly straightforward: it detects and processes radio waves that have been transmitted with a specific known fr...
Understand Radio Architectures
The fundamental operation of an RF front end is fairly straightforward: it detects and processes radio waves that have been transmitted with a specific known fr...
GPS Jammer
With a GPS receiver that costs less than a few hundred dollars you can instantly learn your location on the planet-your latitude, longitude, and even altitude-t...
GPS Jammer
With a GPS receiver that costs less than a few hundred dollars you can instantly learn your location on the planet-your latitude, longitude, and even altitude-t...
Mixer Converter Circuits
In 2011, designing a frequency converter circuit consists in most cases of picking out an IC that has the characteristics you need from a gain and mixer spuriou...
Mixer Converter Circuits
In 2011, designing a frequency converter circuit consists in most cases of picking out an IC that has the characteristics you need from a gain and mixer spuriou...
One Receiver
RF Cafe visitor David M. wrote to ask that I scan and post this article from the January 1963 edition of Popular Electronics. It is an article written by Philip...
One Receiver
RF Cafe visitor David M. wrote to ask that I scan and post this article from the January 1963 edition of Popular Electronics. It is an article written by Philip...