austin tx

160 meter broadside/endfire array - AA1K 160 meter BS/EF TX array

160 TX array by AA1K - 160 meter tx antenna array

Parasitic Delta Loops for 40m - 2 element 40 meter parasitic delta loop antenna by PY4VE

The 1:1 Current Balun - About 1 to 1 current balun by Roy Lewallen, W7EL

Twin Feed experiment - Experimenting a low impedance feedline by G3TXQ

Coax Antennas - Amateur Radio Coaxial Antennas by G3TXQ

W3EDP Antenna by AE4IC - Post on a W3EDP experience by Bob Kellogg, AE4IC

ZD7XF St Helena - Nigel G3TXF plans to operate as ZD7XF on CW from St Helena between 22 June and 30 June.

Ameritron AL-811H tube selection - This article examines the performance of the Ameritron AL-811H amplifier with the supplied 811A tubes and with 572B tubes, and details a procedure for replacement of existing tubes.

K2 Change 20 30m band filter - Elecraft K2 mod. Narrower bandpass filter, better stopband attenuation

Handling of extremely strong signals K2 Mod - Makes reception at frequency of strong tx close by possible

Elecraft K3 High Performance HF RTX - I0GEJ page on the Elecraft K3 transceiver

Icom IC-746 FAQ - This is the old ascii text based faq for Icom IC-746 HF/VHF Transceiver

Solving harmonic problems on UV3R - KA7OEI modification to LPF for the Baofeng UV3R

Baofeng LPF mod by G0FTD - A modification of the UV3R Baofeng handheld transceiver to improve the built in low pass filter

TM-241E Mods - TM-241A RX/TX mods The TM-421 a is capable of transmitting from 136 to 174 MHz when the following modification is performed

Tinitro - Ham radio shop dealer for Microham Optibeam Big Boy Rotators EA4TX products based in Finland

Electronic Device - Amateur antenna and transceiver dealer based in Grosseto Italy

QSL Studio - QSL cards and labels printing software. Create colourful QSL-cards and labels literally in some minutes. Print filled QSL cards or stickers from an ADIF-file, logs UR5EQF Log, HRD Logbook, AALog. Windows Shareware program by RS SoftX.

2.3GHz ATV TX - Ian G6TVJ design for a synthesised ATV transmitter covering the 13cm band and beyond up to about 2.6 GHz.

FT290 CW KOX Circuit - This is not actually break-in but just KOX circuit. It can only be used on the CW mode otherwise it keys up the Tx

Softrock RXTX - DF9CY Softrock RXTX Software Defined Radio Transceiver (SDR)

PSK31 interface schematic for Yaesu RTX - Yaesu FT-1000MP, FT-990 and FT-920 packet data port to pc sound card for psk 31 interface.

PC to Rig Interfacing Information - Connecting the computer to your RTX for using ham radio software programs

Measuring SSB transmitter power - PEP RF output power measurement, and examples RF output power measurements