ic7400 5mhz

7elements 21MHz OWA Yagi - An Excellent 15M compact 7el OWA Yagi for the 21MHz band. SWR remains below 1.1:1 from 21-21.45MHz. Tapered elements in Metric and USA sizes

137 MHZ QHF Quadrafilar APT Antenna - This version of the 135mHz quadrafilar antenna for APT reception is an adaptation from Bill Sykes and Bob Cobey's article Taming the QFH which appeared in the March 1997 RIG magazine.

Short Dipole for 80 Meters  ^pop - May be of interest to anyone wishing to get on 80M (3.5MHz) that have limited space available.

Short Dipole for 80 m - This short dipole antenna has been described by Nadisha, 4S7NR and may be of interest to anyone wishing to get on 80M (3.5MHz) that have limited space available.

Helix antenna for 435MHz - homebrew an helix antenna for 435 MHz by VE2ZAZ

Super J-Pole for 435MHz - The Super J Pole antenna is a co-linear vertical consisting of a number of half wave length vertical elements separated with half-wave length stubs (Tuning stub) feed with a folded matching stub by vk6ysf

J-pole antenna for 915MHz - A 915 MHz four bay j-pole antenna plan

N8RT Beacon - 10 Meter Beacon in Blairsville, GA, operates on 28.245MHz

KA1EKS Beacon - 28.2665Mhz 10 meter beacon

K6FRC Beacons - 50Mhz 28Mhz 13.5Mhz amateur radio propagation beacons by K6FRC

PBG Station Brunei - Perumahan Beribi Gadong 146.265MHz Blog from Brunei

GB3MN and GB3VT Streams - 3.697 Mhz 80 Mtr Late Night Net[22.00gmt-05.00gmt]HF SSB. GB3VT Stoke on Trent 2 Mtr Amateur Radio Repeater 145.725Mhz[05.00gmt-22.00gmt] These streams now run back to back with high quality 64kbps aac+ and are availiable 24/7/365.

How To Make A VO-52 SAT QSO Video - Using a home made 10 element 435 & IO Loop for 145MHz, with a Yaesu FT-847. Simon - 2E0HTS, adjusts his (uplink) transmitted signal to correct the doppler of the Received (downlink) frequency.

A low power 3.5MHz ARDF transmitter - This low power transmitter is developed for ARDF exercising purposes but of course can be used as super QRP transmitter either. With 1 or 2 meter wire as antenna and a ARDF receiver with ferrite-rod antenna the range is about 100m but with better antennas and a 'real' receiver the range is probably much larger.

Online repeater in Los Angeles - An amateur radio web site serving the notorious 147.435Mhz Repeater in Los Angeles. Listen to the Shoutcast Live Streaming Audio.

5MhzLog - This logging application has been developed to improve the accuracy of the data being captured for the 5MHz Experiment.

JA3MHV Amplifiers - 4CX1000A x2 AB1GG Power Amplifier, 21MHz 15W and 3.5/7MHz 20W SSB Transceiver by JA3MHV, 50/144/435MHz 80W Linear Amplifier

Broadband Power Amplifier - A MRF141G 3-175MHz Broadband Power Amplifier DL4MEA 02/1998

Lowpass filter for 5MHz - The following lowpass filter was built using the tables in the arrl manual, it is a 5 section one and seems to work ok