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 VSWR, Reflection Coefficient, etc., and then shows how you can use it to monitor the tuning behavior as you make adjustments. The basic steps include: – Setting the traces that you want to display (SWR, Smith, S11) – Setting the frequency range – Running a Calibration – Making the sweep – Using Markers Please see my previous videos on the VNA, Smith Chart, Transmission Lines, Terminations, etc. for more background.

Review

FT-710 [ Update Sherwood Table of Receiver Performance ]

October 02, 2022 No comments

FT-710 The New Yaesu radio was in the 4th position updated today See full List : Link Read more

ROHN Towers – Manufacturers Showcase

September 30, 2022 No comments

We have Todd with ROHN Towers here in the DX Engineering Showroom with Tim, K3LR! Read more

Demo of the Penntek TR 45L

September 29, 2022 No comments

 Penntek TR 45L A brief show-and-tell of the Penntek TR-45L CW memory function and notch filter Read more

Five Insanely Great Ham Radio Portable Operation Accessories

September 29, 2022 No comments

Here are five little pieces of gear that I find insanely helpful in my portable and Parks on the Air operations. Most of these items are quite afforda... Read more

VGC VR-N7500: APRS! Android, iOS, Bluetooth, Dual Band 2m/7cm

September 28, 2022 No comments

The VGR VR-N7500 is a 50 watt dual band radios that leverages android and iOS devices for advanced, yet simple controls using the large screens on you... Read more

News

Amateur Radio Operators Continue Response to Ian

September 29, 2022 No comments

As Hurricane Ian, now a tropical storm, makes its way across Florida, amateur radio operators continue to provide communications support for weather u... Read more

Hurricane Watch Net Update for Ian

September 29, 2022 No comments

The Hurricane Watch Net (HWN) has been in operation since the morning of September 27, 2022, as Hurricane Ian swept across Cuba and headed toward Flor... Read more

FCC Grants an ARRL Emergency Request to Permit Higher Data Rate Transmissions for Hurricane Relief Communications

September 28, 2022 No comments

The Federal Communications Commission (FCC) has granted an ARRL emergency request for a 60-day temporary waiver intended to facilitate amate... Read more

New ICOM IC-PW2 HF Amplifier Reaction With Ray Novak N9JA

September 22, 2022 No comments

ICOM has announced the IC-PW2 HF + 6 meter 1 kw amplifier. Thanks Ray for hanging out with me to do a reaction video! Read more

How Coaxial Cable Improves Antenna Reception

September 22, 2022 No comments

Comparing RG58/U, RG8X, Hyperflex 5, Ultraflex 7, & Hyperflex 10 What’s the difference? Read more

App - Mobile

iWSPR TX – WSPR for iOS version 3.1

July 27, 2022 No comments

iWSPR WSPR implements a protocol designed for probing potential propagation paths with low-power transmissions.  Normal transmissions carry a sta... Read more

The Android SDR App That Beats Them All! Supports RTL-SDR Airspy HackRF and Many More!

June 28, 2022 No comments

Android SDR App SDR MUST be plugged in before starting SDR++ and you MUST press refresh in the SDR source you’re using befor... Read more

CW QSO Simulator for iPhone and Android

May 16, 2022 No comments

This app is a real CW QSO simulator for ham radio operators. Supports “599BK style QSO”.In order to reproduce a realistic QSO environment,... Read more

Mobile App Available to Navigate 2022 Dayton Hamvention

May 05, 2022 No comments

Dayton Hamvention® is offering a free mobile app for smartphones and tablets to help attendees navigate the large-scale event, which runs May 20 – 22... Read more

xCluster: A Mac DXCluster Map App

April 09, 2022 No comments

xCluster is a visual display of dx cluster activity. DX spots are received via telnet or web services and displayed in a tabular form and plotted on a... Read more

Digital Modes

Getting Audio Sorted Out for FT8 

September 08, 2022 No comments

Kevin, KF0IPD, Is having problems with his audio. He is wondering if their is a setting on the 7300 that powers down the sound card inside the radio w... Read more

VarAC – HF/FM Digital Chat Reinvented

July 22, 2022 No comments

VarAC What is VarAC? VarAC is a FREE, modern HF P2P real-time chatting application for the amateur radio operator that leverages the gloriou... Read more

The Ultimate Portable Ham Radio Computer

November 04, 2021 No comments

Hello Operators. In this episode of the OH8STN ham radio, we are discussing replacing the raspberry pi field computer build, with the Microsoft Surfac... Read more

Get Started with FT8 – An Introduction for Beginners

November 04, 2021 No comments

FT8 is a mode in the WSJT-X software developed by Dr Joe Taylor K1JT. In this video I show how to get started and make contacts with FT8, introduction... Read more

WSJT-X Version 2.5.1 has been Released

October 28, 2021 No comments

The WSJT-X development team has announced the general availability release of WSJT-X version 2.5.1. This release mainly contains i... Read more