simple 4:1

A 5 element beam for 10 meter band - Here is a very simple 5 element covering the entire 10 meter band (28.000-29.700) with a swr of less than 1.4 at the band edges

Morgain Antenna for 40/80 - Simple and cheap antenna for 40/80 meter band

Build a 4:1 Guanella Balun - Step-By-Step Construction of a 4:1 Current-Type Guanella Balun by W1CG

The DK7ZB-Match for Yagis - Simple, easy to built match developed in 1995 for Yagis with resistitive loads of 12.5, 18 and 28 Ohm.

G5RV Antenna Homebrew - Homebrew G5RV a simple multiband antenna by 9M2ZAK

Simple Dipole Antenna for 2m - A simple portable dipole antenna for 144MHz

DK7ZB 144 mhz Yagis - High gain, good pattern and acceptable bandwidth. These aims can be realized with a radiation-resistance of 25-35Ohms, because the 28-Ohm-feedpoint is very simple to match.

43.33 Km LOS with USB WiFi stick  ^{updated  pop} - Simple USB 802.11b WiFi adapter with original antenna test by adam 9A4QV.

Freebanders antenna systems - Yagi Quad's and Verticals simple explanations about freebanders antenna systems

DXCal DX Calendar - This is DXCal - a DX Calendar. The idea is quite simple, DXCal is a calendar where hams can adds all the DX events that are planned.

Yogi Electronics - Yogi Electronics provides DTMF Control Simplex Repeater board.

MiniLog - MiniLog - /P Logging Software, a simple logging application that run under WindowsCE, XP and Vista for use on a cheap netbook by M0PZT

MacTNC - MacTNC is simple, configurable terminal software used by amateur (ham) radio operators to control a TNC (terminal node controller). MacTNC performs most of the same functions of other terminal software, but includes buttons for standard commands, and allows the user to configure additional buttons for special purposes. MacTNC works only user Mac OS X because it relies on Unix components of the current operating system.

GOLog Contest Logger for Palm OS - GOLog is a contest logger for Palm OS and was written with the QRP field contester in mind. GOLog is small (about 48K) and simple and should run on any handheld computer running Palm OS version 3.0 or newer.

IC746 control - IC-746 control It’s as simple as point and click. Left click will turn counter clockwise, and right click will turn clockwise.

HugeIcom - This is a very simple program which helps visually handicapped people to see the frequency and mode of the rig. Or maybe it's useful for demos, trade shows or similiar. It will work with any Icom except the IC-735.

SCAN505 - A simple freeware scanner program for the Kachina DSP505. The software does NOT control the radio thru the interface port - it works in conjuction with the Kachina control software using the file interface

Callsign Lookup - Callsign Lookup is a simple, small Apple Macintosh application that allows the amateur radio operator with a dedicated Internet connection (DSL, cable) to quickly access online callsign databases

A simple VOX circuit - Here is a 3 transistors 6 diodes circuit that is a Voice Operated Tx PTT control as well as an ANTI VOX circuit to stop mis-operation from Rx noise by G8MNY

G0UPL 30m QRSS Junkbox Beacon - This simple 30m QRSS beacon is built entirely out of junkbox parts, the only component purchased specifically for this project was the 10,140kHz crystal.

Cheap and simple HF dummy load - This is the report of a MFJ-259B analysis of two 100 ohm / 5 watts resistors in parallel partially in italian

Homebrew FT 817 Headset - A simple circuit to homebrew your own headset for the Yaesu FT-817

CW Filter - I0QM Gaussian CW Filter page This Filter for the weak signals is the evolution of the simple Universal State filter, already published on "Radio Rivista", the 8/1993

A Power Supply on the Cheap - Need a variable power supply that is short circuit protected and over voltage protected; Here is a good one that can be built cheap by VE3IVJ

External Keypad for FT-817 - An external keypad for FT-817(ND), for the serious portable/field-day contester/operator. Homebrew it with the free firmware and public circuit diagram. The circuit is very simple and takes power supply from the ACC port of the radio