swr 70cm

4m Slim Jim Antenna - This 4m Slim Jim Antenna is cheap and easy to build yet it greatly out performs the more usual dipole due to its low angle of radiation. An SWR of 1:1 is obtainable across the 4m ham radio FM band with a simple adjustment.

70cm colinear - An home made 70 cm colinear antenna at M1KTA blog

70cm vertical antenna - Schematic for a DIY 70 cm vertical antenna

70 cm home made antenna - Schematic of a 70 cm vertical antenna

All About Ham Radio ladder-line - ladder-line is great - extremely low loss, even at high SWR. However, many hams refuse to use it because they are afflicted by common misconceptions

SWR, Impedance and Line Loss - This article deals with the practical aspects of SWR, line loss and input impedance.

SWR analysis of a G5RV antenna - Plotting SWR of a G5RV Antenna with a RigExpert analyzers

Eggbeater II Omni LEO Antenna - Building Eggbeater II Omni low Earth orbit satellite Antennas for 70cm by ZR6AIC

VSWR Reactive Power - Many antennas and antenna designers neglect the true cause of loss. The major problem using short antennas is the reactance, not the length

Understanding SWR by Example - Take the mystery and mystique out of standing wave ratio QST Article by K5DVW

70cms and 2m Dual Band Aerial - A prototype antenna built using a single approx. 2.3 meter length of 4mm stainless steel wire

Mansfield Amateur Radio Repeater Group - Operate two repeaters, GB3MX on 2m and GB3MD on 70cm, Ashfield England UK

5W SWR Meters - HF VHF UHF Digital SWR & Power meter manufacturer based in China

ND2X mobile setup - Generally Mobile uses KB6KQ Antennas on 6m, 2m, 135cm & 70cm

Isle of Man Repeaters - Isle of Man Repeaters maintained by David Osborn GD4HOZ this site covers the VHF repeater GB3GD and UHF internet linked 70cm repeater GB3IM. Using Allstar software for linking GB3IM is the only site in the uk to have three transmitters. Supported by the Isle of Man Amateur Radio Society

RF Calculators - A collection of calculators from everything RF for various applications VSWR, attenuator resistance valies, microstrip, coax, unit conversions and many more.

SkookumLogger - SkookumLogger is a free contest logging program for Mac OS X 10.7 (Lion) or later, supporting CW and SSB events on the six HF contest bands plus 6m, 4m, 2m, and 70cm. By K1GQ

70cm KW Amplifier - 1KW 70cm LDMOS amplifier project

70cm Amplifier - A practical 70cm solid-state amplifier design capable of 500w

Switching Regulator Basics - Switching Regulator Basics By Mike Martell N1HFX

SWR calculator - Online VSWR Voltage Standing Wave Ratio Calculator