Laurence, WA2TLY, is asking some questions about a few aspects of the EFHW 80-10 antenna, Why they are there and what they are for?
Antenna
Triband Receiving Loop for 160/80/40m by AC0C
“Noise is the constant companion of the stealth antenna warrior. And as the 160m season heats up this winter, the noise level of the house with… Read more
2018 QST Antenna Design Competition Winners Announced
ARRL has announced the winners of the 2018 QST Antenna Design Competition. “Dozens of entries were received, but only three could win,” said… Read more
Can I Put One End of a Dipole Next to my VHF Antenna?
Nick, KC3PWJ, has a flagpole and also a pole that holds up his VHF/UHF discone. He’d like to string a 20m dipole between the two poles, but is w… Read more
Light Beam Multi-band Antenna LBM-17M+20M
The Light Beam Multi-band Antenna has been developed for Hams who want one antenna which enables them to operate on multiple amateur bands. Bas… Read more
OL7M installed monster G0KSC 28MHz system
After one year in the making, the contest team at OL7M have finished the construction and installation of 4 x 6 element 28MHz G0KSC OWA Yagis. This in… Read more
Review
ADALM PLUTO Frequency Expansion Modification Plus CPU Cores
“Here we take a look at the ADALM-PLUTO frequency expansion modification to give us 70 MHz through to 6GHz. Mine actually went as low as 46MHz!!… Read more
The RS-918 clone of a clone of an outstanding open source SDR transceiver, the mcHF
RS-918 10WATT HF SDR Transceiver RX:1.8-30MHz TX:All HAM HF BANDS,Full Modes: SSB(J3E),CW,AM(RX Only),,FM, FREE-DV Features: Spectrum Dynamic Waterf… Read more
KM4IPF Shows the Template for the HF Go Box that Will be Used for Our Dry Tortugas DXpedition
“KM4IPF, AE4FH, and WX4TV are planning a mini DXpedition to the Dry Tortugas later this year and we are building an HF go box to hold the Yaesu… Read more
How Does An Inexpensive Transceiver Compare to An Expensive Transceiver
Jim W6LG plays recordings of an Elecraft K3s and a Yaesu FT-450. Which sounds best to you? Vote for receiver #1 or receiver #2 and give a very short d… Read more
Equipment
RM Italy HBF 1000 Automatic Low-Pass Filter, 1.8-55mhz, 1000W
Automatic Low-Pass Filter The HBF 1000 is a high power low pass filter, it’s designed to be used with a transceiever or amplifier to reduce the… Read more
Hermes Lite 2 HF SDR Construction And Receive Test
Here we build the Hermes Lite 2 HF SDR and test it’s receive capabilities. Read more
Antennas and bands programmable controller LBC8ARD – MomoBeam
LBC8ARD 8 DIRECTION CONTROLLER programmable for any remote relay switches and controlers; Easily programmable to control equipment of: LowBandSystems… Read more
Ameritron AL 811
Ameritron AL 811 The first 600 watts make the differenceThe Al-811 gives you 600 watts PEP output — thats nearly 2 full S-units ov… Read more
NEW LNA + FILTER FOR RADIO ASTRONOMY HYDROGEN LINE OBSERVATIONS RELEASED BY NOOELEC
NooElec have recently released a new LNA + filter combo called the “SAWbird+ H1 Barebones” which significantly lowers the entry bar for ne… Read more
News
ARRL Now Provides Free RF Exposure Calculator
The FCC has adopted guidelines and procedures for evaluating environmental effects of RF emissions. Under the new FCC rules, some amateurs need to per… Read more
Faith Hannah Lea, KD3Z, is Amateur Radio Newsline 2021 Young Ham of the Year
Faith Hannah Lea, KD3Z, of Palm Coast, Florida, has been selected as the 2021 Bill Pasternak WA6ITF Memorial Amateur Radio Newsline Young Ham of the Y… Read more
Just Released: More Arduino for Ham Radio
The new book More Arduino for Ham Radio by popular author and experimenter Glen Popiel, KW5GP, builds on the success of his two previous titles, Ardui… Read more
Woody White, KZ4AK, Wins the July 2021 QST Cover Plaque Award
The winning article for the July 2021 QST Cover Plaque award is “A Sensitive Field Strength Meter for Foxhunting,” by Woody White, KZ4AK. The QST Cove… Read more
![SSTV Transmissions Scheduled from ISS [ August 6 – 7 ]](https://i0.wp.com/www.nerfd.net/wp-content/uploads/2021/08/133827-265x168-3.jpg?w=635&ssl=1)
SSTV Transmissions Scheduled from ISS [ August 6 – 7 ]
Friday and Saturday, August 6 – 7, Russian cosmonauts onboard the International Space Station (ISS) will transmit slow-scan television (SSTV) images f… Read more
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