40m receiver

N3OX Flex Vertical for 40m - N3OX three meters Flex Vertical, a Short, Frequency Agile Vertical for 40 meters

Parasitic Delta Loops for 40m - 2 element 40 meter parasitic delta loop antenna by PY4VE

Shortened Dipole for 40 Meter - A shortened dipole antenna for 40 meter band

Vertical Dipole for 40 Meters band - A lightweight portable vertical antenna for 40m

Vertical Dipole 10-40m - A multiband vertical dipole antenna by ON4BAI

HF Blaster - The antenna is designed to cover 40M through to 10M meters, mounted on a fishing pole and a 4:1 balun by 2E0SDR

S9V 40M vertical antenna - A fiberglass-wire vertical antenna for 40 m band by WY3A

80m 40m Vertical antenna - HF2 antenna, home made vertical antenna

Collins R388/URR Receiver Resource Page - A page dedicated to the Collins R388

Sparkmuseum - Vintage radio and scientific apparatus by john jenkins, include antique radios, Horn Loudspeakers, Vacuum Tubes, A.C. Receivers

WebSDR in Texas USA - WebSDR receiver by KD5QLM located in Little Elm, Texas

The HANDI-Finder - This Radio Direction Finder Device Connects to an FM Receiver, Transceiver, or HT

Repeater Ideas - This illustrate having a high elevation receiver input for a limited low elevation transmit location.

Elecraft K2 - Narrow Bandpass Filter - This note covers narrowing the K2\'s 40M bandpass filter to cover the narrower 40M band and reject strong out of band broadcast interference

Elecraft K3 Receiver Performance Test - W1WD review and reception performance test of the Elecraft K3 transceiver.

SWL Antenna Distribution System - a methodology for connecting multiple LF/MF/HF receivers to a single antenna via readily available and inexpensive 75-ohm TV cable.

DroidNavtex - DroidNavtex is able to decode NAVTEX messages from your receiver through the Android phone or tablets microphone or through a connected interface.

Home Made duplexer - Homemade UHF/440Mhz Amateur Radio Repeater Duplexer

440Mhz Interdigital Bandpass Filter - Homebrew Amateur Radio 440Mhz Interdigital Bandpass Filter

HF Receiver by F6CRP - Recepteur decametrique 3 - 30 MHz Detection classique et SDR

IN3 DC-RX - One-Cubic-Inch Direct-Conversion Receiver

A Simple Radio Receiver - Development of a simple modular radio receiver

A 12-Volt Homebrew Regen - A one-tube battery-powered regenerative receiver.

KB9YIG - Soft Rock 40 - These pages document some of the experiments with KB9YIG\'s Soft Rock 40 receiver

Software Defined Radio, SDR, Tutorial - A nice tutorial and the basics of the software defined radio, SDR, and links of software defined radios to JTRS, and general SDR receiver technology.