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Antenna designs that K5TR have collected from various sources. -
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Personal review of the Yaesu VX-6R handheld transceiver -
Reporting program that help you keep track of contacts and take care of the routing activity of creating reports and QSL cards. Require miLog logging program -
Project of receive only filters optimized for minimal loss and very high rejection of frequencies below 75% of the filter center frequency by K1TTT -
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Definition of smoothed sunspot number and R12 index -
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This is a simple portable 2-meter J-Pole antenna. You start with a piece of 450-Ohm Ladder Line -
Building Eggbeater II Omni low Earth orbit satellite Antennas for 70cm by ZR6AIC -
Information about the AKAFUNK, our activities and our amateur radio station DK0SU -
A very interesting blog article on a real world comparison on the popular multiband wire antenna, the G5RV, by Bob Raynor N4JTE -
Dodgy plans to make Archimedean spiral antenna for RTLSDR software defined radio receiver. Made of two equal lengths of coaxial cable seems to be the easiest circularly polarized antenna to make that will cover a broad range of the rtlsdr dongles E4000 tuners -
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End fed half wave tuner a handy tool for field day and portable operations -
There's no longer any need to invent new swear words -
Homebrewed transceiver for 20 meter originally born for 17 meters band -
The 2 metre fox-or transmitter is a small low power transmitter which mounts in a small plasic pipe and runs off two AA batteries. The board measures just 12mm by 70mm. -
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Testing SWR on your antenna and getting the best performance from your investment by L.D. Blake, VE3VDC -
This is a prototype of the WA4DSY 56KB RF modem. It is intended for use on amateur packet radio networks. The modem generates RF in the 28 to 30 mhz range and requires and linear transverter to convert the signal to a UHF or microwave ham band -
Classic Radio Restorations specialize in professional repair and restoration on all makes and models of antique radios and vintage phonographs. Since 1978. -
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QSL Information Pages QIP for BC-DXers - more than 50000 qsl logs from more than 10000 BC-DX radio stations -
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Problem width the memories, TS-570 Batteries, MARS/CAP Modification -
Ham radio frequency list consolidation software. The Ham Radio database can house a unlimited number of records. Holding frequency information from DC to Daylight. The Radio Scanner Database is designed to emulate a radio scanner. A 5,000 record table is provided and is organized by channel number. -
The Arduino series of boards is currently the ideal choice for a satellite rotor controller. This controller uses an extended Yaesu GS-232 command set to control a Yaesu G-5500 Az-El rotor and four SPDT relays by W9KE -
A lightweight portable vertical antenna for 40m -
conversion of low band VHF AWA RT-85 transceiver down to 6 metres. -
Making portable pperations easier, N1GY present a different way to make a tilt-base and mast -
W0FMS Two-Wire Beverage (SWA) Transformer Calculator -
TM-241A RX/TX mods The TM-421 a is capable of transmitting from 136 to 174 MHz when the following modification is performed -
Extremely reliable FET preamplifier can handle several watts directly into either the input or the output without failure -
A home made dipole antenna for 10m, 6m, 4m bands made with two sections of 450 and 300 Ohm ladder lines, cut to achieve acceptable SWRs on all bands -
This scheme can be used to combine two antennas -
IV3GFN modification and restore of an HeathkitSB220 -
Decode Slow Scan TV (SSTV) on your iPad, iPhone and iPod Touch by Blackcatsystems -
A 2 element Narrow Diamond Loop Array for 40 Meters by VE3VN -
A simple portable VHF ground plane antenna project used for ARES activities -
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A selection of alphabets used, particularly by ham radio operators, to spell out words -
Modifying consumer off the shelf wireless LAN devices for specialized amateur use -
If you need a cheap and easy to construct Subtone Generator for EU-model VHF-UHF rig, here is a solution that works very well. -
KyteLabs InfoBase - Electron Tubes & Valves Data -
The performance of a small magnetic loop can be improved constructing it larger, thicker or both. The antenna is covering from 12 Megahertz to 32 megahertz and adding a 156 Pico farads ceramic capacitor it resonates on the 40 meters band. by PY1AHD -
80 to 6 meters, 2 KW, designed to be used at heights of only 25 to 45 feet, includes a twenty foot long vertical radiator -
An interesting article on how to make copper cactus J-Pole antennas -
Electro-Voice Model 664 (EV 664) cardioid microphone, wiring diagram, pictures and data sheet -
Isolation vs antenna separation an interesting article by WA6ILQ