WebA direct-conversion receiver ( DCR ), also known as homodyne, synchrodyne, or zero-IF receiver, is a radio receiver design that demodulates the incoming radio signal using synchronous detection driven by a local oscillator whose frequency is identical to, or very … Web3.5 MHz direct conversion receiver. 3.5 MHz superhet receiver. Super simple 7 MHz receiver and notes on RF breakthrough (video) One transistor direct conversion reflex receiver concept (video) One transistor direct conversion reflex receiver concept - refined (video) Demonstration of a chopping board HF receiver as described in Sprat (video)

Chapter 13 BUILDING A HOMEBREW HF RECEIVER - QRP ARCI

WebAlong with the homodyne receiver, direct conversion was one of the earlier methods of building radios, both of which were superseded by the superheterodyne approach. See … WebAmerican Radio Relay League towerfall trials

Correcting I-Q Imbalance in Direct Conversion Receivers

WebSep 12, 2000 · The concept of direct conversion is so appealing that numerous attempts to use the technique have occurred over the years. However, many have failed due to the second-order problems that can cripple a direct-conversion receiver. These problems are mostly due to signal leakage on a printed-circuit board. First, LO radiation can be a show … WebMHz. Right away one can see that a homebrew direct conversion 10-meter receiver is difficult because it needs a stable VFO that will tune 28 to 29.7 MHz. This problem can be solved by “converting“ the VFO oscillator up to 28 MHz using a crystal controlled oscillator and a mixer plus 28 MHz filter/amplifiers. WebThe receiver can be of the type straight, direct conversion or superheterodyne. General available components have to be used. It was a nice opportunity for me to do some experiments with a direct … tower fall wolfquest