40m receiver

40m delta loop - Building a 40m (7MHz) horizontal delta loop

LFA Antenna for 40m by YO2MBU Priority listing - LFA 2 elements Loop Antennafor 40m by YO2MBU

A Feasible Full Sized 40 Meter Beam - An antenna project for a beam antenna for 7 Mhz

40 Meter NVIS antenna - Near Vertical Incidence Skywave (NVIS) and the 40 meter Novice Sub-band.

Convert 40m 2-element to a Phased Drive Array - This presentation details the work of converting a 40m 2-element reversible beam antenna into a phase-driven type of array

End Fed Half Wave Antenna for 6 / 40 Meter - 6m to 40m EndFed Half Wave Antenna project produces an inexpensive, multiband, end fed HF antenna matchbox that is quick and easy to setup and use.

40m EFHW Antenna - End-Fed 40 meter half wave antenna

Legal Limit L-Match Tuner - The match is built around a 35 uH roller inductor and 350 pF variable capacitor and is used to convert a 40m loop antenne to match 80 and 160

Inverted L Antenna by VK1OD - This article describes a simple Inverted L antenna for the HF bands designed to work on 80m, 40m, 30m and 20m

W8HDU 40m Vertical design - Design of a 40 meter Vertical antenna

3 band portable wire antenna - A portable antenna for 40m, 30m and 20m bands

EscanerGalaxias - Ham Radio forum about antennas, receivers and transceivers in Spanish

Online PSK31 Receiver  ^updated - Online PSK31 Receiver in Charlotte, NC

WebSDR in California - WebSDR online receiver based in California by K6FRC currently operating 10 meter band

50 MHz Noise Canceling Receiver Front End - Reducing noise on six meter band

136 kHz direct conversion receiver - IK2PII describe here a simple direct conversion receiver, thinked for QRSS and DFCW communications, as companion of ARGO or SPECTRAN programs.

A PC as VLF receiver - Using a PC with soundcard as a VLF receiver, how to use your PC as a receiver for narrow-band signals in the VLF radio spectrum by DL4YHF

Microsat - Ham radio shop for APRS digipeaters WX3in1, RPTC, GSM devices, SDR software defined radio producrsa, APRS trackers and GPS Receivers based in Poland

Wadsworth Repeaters - The GE Master Exec II receiver employs a five cavity helical input filter to insure out of band rejection.

Grounding and Receiver Noise - An interesting article on grounding and receiver noise

TS-590S Pan Adapter Cable - This article describes how to make a simple receiver Out adapter cable for the Kenwood TS-590S, so a second receiver can be connected and used as a pan-adapter

Airband receiver - Described here is an airband receiver with good performance, double conversion AM superhet which gives good selectivity and sensitivity and covers 110MHz to 136MHz

A Simple Superhet for 40M CW - An home made receiver for 7 MHz CW

A simple regenerative receiver - A Simple Project: One Transistor TRF Regenerative RX

MDSR / SDR by VE3LNY - An SDR project, MDSR modulator-demodulator software radio, made using an inexpensive converter and a pc. MDSR has a transceiver and a receiver converters.