“Hello Ham Radio Ops,
K5ACL from SignalSearch here with another Antenna comparison/testing video using the Weak Signal Propagation Reporter (WSPR) network.
Testing out an elevated 1/4w vertical vs Link Dipole using a simultaneous WSPR transmitter that was homebrewed by W6LVP – thanks Larry! I’ll run the test on 20 & 40m only (40m using a portion of coil on the Vert. antenna) at 500mW.
The results were a bit surprising since I chose to only use 1 radial on the vertical. I’ve done switching comparisons before, but never a simultaneous one. DXplorer.net (Premium subscription comes with the WSPRlite device from SOTAbeams, but the basic service is free) offers a really neat way to compare antennas with some valuable information.”
Review
Icom IC-7851 Transceiver – ARRL Review – QST
Contesters and DXers are always looking for that competitive edge to magically pull out the weak signal that is either the rare country or multiplier... Read more
How to use the NanoVNA to sweep / measure an antenna system’s SWR and optimize its tuning
This video briefly shows how to setup and use the NanoVNA to sweep an antenna system (antenna, transmission line, transmatch, etc.) to measure its VSW... Read more
Icom IC-2300H Review by AmateurLogic.tv
Tommy Martin, N5ZNO and George Thomas, W5JDX from AmateurLogic.tv and Ham Nation take a look at the IC-2300H. Read more
Review of Radioddity GD-77 DMR Tier 2 Handheld
Dual Band & Dual Time Slot: VHF 136-174MHz, UHF 400-470 MHZ; GD-77 has both Tier I & II and is compatible with Motorola and other DMR radios.... Read more
Antenna
A Portable 75/40* Meter NVIS Antenna
by David B. Murray, KD1BL Background: While taking the Level II Emergency Communications Course, my mentor, Ron Kane (AD6KV) presented information on... Read more
“Antenna Wire” is the topic of the latest episode of the “ARRL The Doctor is In”
“Antenna Wire” is the topic of the latest (January 18) episode of the “ARRL The Doctor is In” podcast. Listen…and learn! More than a half-mill... Read more
Reference Station Antenna Redux: MFJ-2010 OCFD for 40, 20, 10, 6m
“The MFJ-2010 off-center-fed dipole (OCFD) looks like a much better candidate for the reference station antenna. This video looks at is features... Read more
VHF
Announcing the AMP-25 Series
We are excited to introduce our brand-new AMP-25 amplifiers! The AMP-25 series do more than just amplify a signal, they also purify your signal as it... Read more
Released the IP501M dual-SIM compatible in- vehicle IP transceiver compatible with 2 carriers of au / NTT DOCOMO .
Product name / model name In-vehicle IP transceiver / IP501M Suggested retail price Open price Release date Monday, September 30, 2019 Annual sales pl... Read more
NEW Launch TYT DM-UVF10 DPMR Digital voiceWalkie Talkie VHF + UHF
TYT DM-UVF10 ,a dualdisplay, dual standby two-way radio,adopts high-technology and novel designDM-UVF10 adopts humanism design,making it smart... Read more
ARRL Suspending Tours and Guest Visits to Headquarters
As part of efforts under way to help protect the health and safety of ARRL Headquarters employees and volunteers from the impacts of the coronavirus,... Read more
Equipment
ACOM 1010 160-10m amplifier
FEATURES Easy operation. The plate-load True Resistance Indicator (TRI) is an ACOM innovation that provides quick and precise tuning, typically... Read more
LP-500 Digital Station Monitor
General (exclusive features in red) * Bright, High Resolution 5″ Color TFT Display * 32-bit Main Processor * Graphics and Audio coprocess... Read more
Airspy advanced open-source software defined radio receiver
What is Airspy? Airspy is an advanced open-source software defined radio receiver with adequate dynamic range, capable of sampling 10MHz... Read more
LRN Precision LD-11 QRP Transceiver
LRN Precision LD-11 Transceiver Others state “extra”, We INCLUDE as STANDARD The HOTTEST new QRP Multimode HF+6M Transceiver on the marke... Read more
Digital Modes
Raspberry Pi Ham Radio SSTV
In this project the Raspberry Pi with the PiCam is used as a wireless camera which can transmit images over long distances, usually hundreds of meters... Read more
Work the World with WSJT-X – Dr. Joe Taylor
“Dr. Joe Taylor, K1JT, author of many of the weak signal digital modes and co-author of the very popular FT-8 mode presented: “Work the Wo... Read more
The FT4 Protocol for Digital Contesting by K1JT
Joe Taylor, K1JT, Steve Franke, K9AN, and Bill Somerville, G4WJS April 22, 2019 Introduction: FT4 is an experimental digital mode designed specificall... Read more
