hf receiver

HF Aerial Design - A novel approach to aerial evaluation with diagrams and graphs by G3CWI

Quickie Vertical  ^pop - KQ6RH HF multiband vertical antenna plan

Cheap VHF/UHF Antennas  ^pop - Cheap Yagi Antennas for VHF/UHF

IARU Region II HF Band Plan - This band plan was approved by the XIII General Assembly of Delegates of IARU Region II held at Porlamar, Margarita Island, Venezuela from September 28 to October 2, 1998

WB2RXF David - VHF UHF, Satellite and weak signal resource

N2BR Bobby - Amateur Shortwave Radios Links and information,Also Swap Radio Groups Bearcat-scanner Drake Radios Hallicrafters and more

HB9AFZ Web receiver in Switzerland - Web receiver of hb9afz-using icom pcr 1000 on weekends 0800-2000 utc.

Mikrocentrum web receivers - Choose from icom pcr 1000 or srt cr-91 communications receivers from Umea, Sweden

Gisela Dierking NF/HF-Technik Germany - Many interessting accessories, like unversal audiofilter, Mixer interface for sound card, highvoltage powersupply,accessories for 706, hamradio vacation, and more

ZX-YAGI Antennas - Fine HF beams for Ham Radio and CB made in Germany

EME resources by DL4EBY - Several kinds of operational data needed for Amateur Radio moonbounce (EME, earth moon earth) communications, the technical challenge amongst the various propagation modes on VHF, UHF and microwaves

Minnesota DX Club - The MDXC has monthly meeting in the Twin Cites. Coverage all bands from LW to UHF. We also have Summer and Winter DXpeditions.

Scanrec Scanner Recorder - Scanner Recorder (Scanrec) is a free audio recorder that is primarily designed to record speech. It has a VOX control that allows the user to save disk space when no sound is present in the signal. Since FM communications has such an effective squelch, the recorder works best with FM. HF ham bands and World Band radio have such a poor signal to noise ratio that the VOX gate on Scanrec might not be very easy to set.

QSO Manager - HF QSO/QSL/Award managment, ADIF Import/Export, full version free to everybody. Requires Access 97 or Access 2000 (with JPEG and TIFF filter installed), screen resolution 800x600/1024x768

BeaconSee - BeaconSee shows you, in real time, worldwide HF band openings on your PC. Analyses the audio signals from your radio, which is tuned to the NCDXF IARU HF beacon network and shows you the signal strength received from each of the 18 beacon transmitters as a plot of frequency spectrum against time.

Voice Descramble - This program descrambles band inverted encrypted transmissions, usually found on VHF/UHF. It uses a NCO (numerical controlled oscillator) to re-produce the originally inverted audio band.

VHF Logging program - This program checks for duplicates (including partials), lists multiplier grids by band, lists all contacts, writes the Cabrillo file format for log submission, and provides many current statistics by N3FJP

K9SE E-Layer Propagation Assessment - SE-PROP, Field-Aligned Scatter Assessment, Sporadic-E Propagation Assessment for the VHF Operator

VisualRadio  ^pop - Interactive Webradio Software under Windows for most receivers/transceivers available today.

ERGO Radio Software - Creative Express Corporation software to enhance shortwave radio listening. Support for Drake R8A/B, NRD535/D, WJ HF-1000 and TEN-TEC RX-320 receivers, as well as propagation, path evaluation and database management.

Kenwood TS-570D RCP-2 software - Download Kenwood's free radio control software for the TS-570 HF

Radio Clock - Enables you to decode the time signals sent by various LF and HF radio stations in the standard frequency and time service

WL7AML Intermod program - This program will run all possible combinations of every transmitter against every receiver in its list

Mode J Desense Filter - This type of filter can be used in a Mode J satellite station (uplink on 2m, downlink on 70cm) to reduce the problem of the uplink signal desensing the receiver

Homebrew radio receiver  ^pop - Detailed plans of my homebrew receiver. Frequency coverage is from below 300kHz to 30MHz. Pictures, schematics, board layouts, parts lists and more can be found here.