cobra 25

9 elements 50MHz 12.5Ohm Yagi - A DX antenna for Serious hams. High gain, super flat SWR. The ultimate 9el 50MHz Yagi

600:50 Ohm Baluns - Low-cost 600:50 Ohm Baluns by Andrew Corney ZL2BBJ

The Cobra antenna - This article explores the Cobra Junior linear loaded antenna for 80m to 10m bands. This antenna is a linear loaded dipole described by W4JOH in 73 magazine June 1997

Folded dipole antenna by N4SPP - A quarter size cobra dipole antenna, a multiband dipole antenna for 40 to 10 meters basedn on original cobra dipole design but with a limited space by N4SPP

The Mysterious Cobra - The Cobra antenna explained, article by Rick Littlefield - K1BQT

222 Mhz Yagi Antenna  ^updated - VE3CVG 222 MHz (1.25m) 6 element plumber's delight yagi antenna

Macon County ARC - The Macon County ARC has been actively supporting the interest of Amateur Radio for over 30 years. In 1998, we received a 25 years of ARRL Affiliation Certificate

Women in Ham Radio - A facebook group where all women and girls in ham radio can gather together to share the common interest of amateur radio.

Cobra Electronics - CB Radios, GPS systems, marine electronics, two way radios, power inverters, speakers, antenna mounts and microphones.

Centerfire antenna - US Antenna manufacturer offering base and mobile antennas for 2 meter, 1.25 meter and 70 cm Amateur Radio GMRS and MURS Citizens Band Radio VHF and UHF Business Band Radio HF, VHF and UHF Scanning

Quartslab - Quartslab has over 30 years of experience in supplying quartz crystals to the international communications market. Our product range includes the supply of quartz crystals in the frequency range 1.5 to 225 MHz in all popular holder types as well as crystal oscillators in DIL8 and DIL14 packages.

CQ Zones WW Map - Large - A large CQ Zones WW Map, in a 3111x2251 Pixel format suitable for printing pourposes

Kenwood THD7E Notes - THD7e report and AX25 usage by PE1DNN

Global Frequency Database - Frequencies from all over the world. 25000+ total records, 4600+ records feature exact GPS locations.

Texso Instruments - Distributor of test and measurement and calibration instruments and provider of NIST traceable ISO/IEC 17025 accredited calibration services. Texso sells insulated tools, multimeters, insulation testers, and much more.

LoopHam Linux - Ham radio Distribution of the linux operating system that can be installed on and run from a dos system (msdos and win95/98 in dos mode) It include all AX25 ham needed packages and a small web server

WinPic 2007 - Program bulk erases, reads, writes and verifies PIC10F, PIC12F and PIC18F families. PIC part number selection. Programmnig voltage selection. 2V to 5V/ 0.25V step. Firmware updating.

PCRCloak - A small, simple Windows program to cloak the ICOM PCR-1500 and PCR-2500 as a PCR-1000, allowing owners to use their scanner with Ham Radio Deluxe

The G2DAF Linear Amplifier - Scans of original G2DAF articles on his HF linear amplifier using QY3-125 tube

Fitting a PL259 to a coaxial cable. - Fitting a plug to thin, 6mm, coaxial cable will require a PL-259 either made for the small diameter cable

CATV F11 and PL259 - Here is a story of installing field expedient PL259 coax connectors on ordinary Cable TV F11 an Rg11 equivalent

BNC to PL 259 adapter - PA3BHK connector adapter

PL-259 Installation - Selecting a good quality connector, Installation of such, and the selection/use of tools for installing them.

ICOM PS-125 Mods - Fan modification for the ICOM PS-125, by KK5DR

40 Meter QRP Transmitter - A simple 40 meter CW transmitter, it sports full break-in operation and 250 mW of output power.