hf filter

HF Antennas for small places - Isotron antennas and EH antennas, solutions for small places by F5IXU in french

K8CU Log Periodic Antenna - Plans, photos, electrical and mechanical design for this HF Log periodic antenna.

HF Wire antennas - About HF Wire Antennas for field day or any day a basic wire antenna article by VE3NXB

DX For Me - DX Cluster  ^updated - DXCluster which will allow mobile usage. Now able to manage filter per bands and mode, and to save configuration for specific DX or special event stations.

1721 Hf Roundtable Group On 40 Meters! Priority listing - The 1721 HF Roundtable Group meets nightly on 7.261 + - QRM. Just a big ham radio family. Informal QSO'S in a rountable fashion.

F9HS VHF EME - My hamradio activity : very high frequency communications using the moon as a passive reflector.

Eco Antenne  ^updated - Italian antenna manufacturer. Verticals, yagis, delta loops, mobile and wire antennas from HF up to VHF and UHF bands including ham radio CB and commercial product lines

J-ames Pole Antennas - Manufacturer of all types of copper J antennas,uhf,vhf, 6 meter,10 meter, portable roll ups, combinations etc.

Fenghuo Communication - HF and VHF transceivers manufacturer based in China

OK1JKT Karel - Information about traffic on SHF, 10GHz band

WSJT/JT44 Forum - Meet users of the new and revolutionary WSJT/JT44 mode, ask for help, arrange skeds, learn how to run JT44 and WSJT.

Make More Miles On VHF - "Lists of hotlinks for VHF radio amateurs hunting dx via meteorscatter, aurora, Es, Tropo; eMail listings of operators qrv in meteorscatter; listing of current VHF DXpeditions"

VHF/UHF 2 meter PSK and digital Group - Looking for Hams that want to experiment on VHF/UHF PSK/digital modes

4NEC2 antenna modeler  ^pop - 4nec2 is a completely free Nec2, Nec4 and windows based tool for creating, viewing, optimizing and checking 2D and 3D style antenna geometry structures and generate, display and/or compare near/far-field radiation patterns for both the starting and experienced antenna modeler. Can be interfaced to HFwin32 propagation prediction software.

Beacon-Prediction Wizard Priority listing - Specialized interface for the communications-analysis-prediction engine provided by VOACAP, predicts the expected performance of high frequency, HF, radio systems

ACE-HF Propagation Prediction Software - Professional PC software for hams that uses VOACAP and includes area coverage maps animated by time or frequency

78thFloor - Download Sw 4 sstv,cw,rtty, via sb, and other appz 4 radioamateurs

MacDSP - Digital filter for Macintosh computers with a PowerPC processor

KMIJ Kenwood Remote Control for TS-850/TS-450 - Windows radio control software for the Kenwood TS-850S and TS-450S HF Rigs. Originally released as shareware, there is a version that is now Freeware, with free registration upon request. Old program by VE3MIJ

Shortwave Log  ^updated - A logging and radio control program. Supports HFCC, ILGRadio, FCC HF, FCC AM, PrimeTime Shortwave, and more!

1.5 to 30 Mhz RF Amplifier  ^pop - This high range amplifier is very small [SB200 size] Vacuum variable input and output caps as well input and output switching.

Quokka's Sawtron Museum - Information on Sawtron Kyodo VHF & UHF radio transceivers

K8CU Technical Topics - Well documented Amateur Radio HF/VHF antenna projects, high power Russian GS35B RF amplifiers, mobile RFI solutions, related accessories, vintage radios, Six meter equipment, and useful techniques by K8CU are inside.

CAT Interface for Yaesu - schematic diagram for CAT interface for yaesu HF Transceivers

AWA RT85A (RT85) notes - Conversion, programming, and software notes for the AWA RT85A UHF transceiver for 70cm