Construction and Analysis of a Low Cost Omnidirectional Horizontally Polarized Antenna for 144 MHz
by Dr. Carol F. Milazzo, KP4MD (posted 23 May 2012)
E-mail: kp4md@arrl.net
- Construction
- Model Analysis and Measurements
- Stacking Halo Antennas
- Gain and Polarization Comparisons
- References
- Return to KP4MD Home Page
More
Happy Birthday ! Guglielmo Marconi
Born in Bologna, Italy, in 1874, Guglielmo Marconi was a Nobel Prize-winning physicist and inventor credited with the groundbreaking work necessary fo... Read more
Real-time band conditions
Real-time band conditions HF chart provided by IPS. © Copyright Commonwealth of Australia 2008. Solar-Terrestrial and HF and VHF propagation data p... Read more
New Digital Modes Gain Traction for Moonbounce, but Occasionally Show Up on HF
In December, Joe Taylor, K1JT, released the latest version (1.7) of his WSJT-X software suite, designed to facilitate basic Amateur Radio communicatio... Read more
FT8, Scope Kit , Pi Zero W : AmateurLogic 107
Peter operates the new FT8 Digital Mode from Joe Taylor. Tommy builds the DSO138 Scope Kit. George discusses the Raspberry Pi Zero W. Wayne build an A... Read more
Strong Solar Flare From Sun’s Heart-Shaped Sunspot Temporarily Disrupts Radio Communications
By Katrina Pascual, Tech Times While they make for stunning images, solar flares could also disturb the atmospheric layer where GPS and communi... Read more
100KHz-1.7GHz Full Band UV HF RTL-SDR USB Tuner Receiver/ R820T+8232
Description: WHAT IS SOFTWARE DEFINED RADIO (SDR)? In traditional hardware radios, the mathematical operations required to decode and proces... Read more
No Need for Panic Regarding Synthetic Aperture Radars on 70 Centimeters, ARRL CTO Says
A recent BBC news article regarding a synthetic aperture radar (SAR) contract award for operation within the 70 centimeter band has raised some... Read more
Worked All Europe DX Contest 2015 – WAEDC
Many leading contesters claim the WAEDC to be the most challenging contest of the year. Being a true blue DX contest, only intercontinental QSOs betwe... Read more
JW/F8DVD – Svalbard
Svalbard François, F8DVD, will once again be active as JW/F8DVD fromLongyearbyen located on Spitsbergen Island (EU-026) betweenApril 9-15th. Hi... Read more
KDLT-TV 1999ft Tower Being Climbed
Nick Wagner from National Tower Controls, LLC climbing KDLT-TV’s 1999ft tower to inspect the digital antenna for it’s annual inspection... Read more
ARRL antenna Book Author Justin Johnson G0KSC at the RSGB Convention
Justin Johnson G0KSC of Waters & Stanton, InnovAntennas and force 12 inc. will be presenting this coming Sunday at the RSGB Convention in Milton K... Read more
$22,000 Fine Issued by FCC to Ham Radio Operator
The Federal Communications Commission issued a $22,000 fine for frequency hogging to a Michigan ham radio operator. The FCC received several complaint... Read more
Storm spotters using ham radios
The National Weather Service will use the information these radio operators report when issuing or canceling warnings. by : Cory Reppenhagen With the... Read more
First Amateur Radio Satellite Contact via AO-85
K5ACL making his first Amateur Radio satellite contact today with KG5CCI on the AO-85 satellite.Setup included the Kenwood TM-V71A (10 watts) with the... Read more
Elecraft KX3 Manual Español and English
El KX3 es un transceptor compacto todo modo, 160-6 metros, que es ideal tanto para los nuevos operadores como para los expertos. Sus características ú... Read more
Amateur radio operator accused of blocking broadcasts
It took a probe that spanned two years and a stealth visit to the Cincinnati area, but a Federal Communications Commission enforcement official says h... Read more
