“Decibels got you down? Are dBm and dBW giving you headaches? Is it confusing when sometimes an antenna gain is given in dBi and other times in dBd? Watch this tell-all to learn about decibels as used in ham radio!”
Antenna
YouLoop HF loop antenna
HF loop antenna HF Portable & Flexible Receive Loop Antenna Covers HF frequencies (10 kHz to 30 MHz) Usable on VHF up to 300 MHz as a folded Dipol... Read more
How-To: Splice Wire to NASA Standards
Developed during the heyday of the telegraph, the Lineman’s splice is designed for connections that will be under tension. It is commonly claimed that... Read more
Measuring Propagation Attenuation Using a Quadcopter by N6GN
These tests show that the signal strength of a local station can be many tens of decibels weaker than from a DX station. For the last several years I... Read more
Ham Radio Anthology : Antennas 1973-1975
Carefully selected, these first two antenna anthologies cover all types of antenna designs and theory from 160 meters through microwaves. All articles... Read more
VHF
50W Full Duty Cycle Digital Repeater – FR5200H / FR6200H IDAS VHF/UHF Digital Repeaters
FR5200H / FR6200H IDAS VHF/UHF Digital Repeaters 50W 100% Duty cycle operation Employing a high performance power amplifier, together with the solid h... Read more
Ultimate Radio Communication Guide : What to Look for in a Handheld Transceiver
Radio Communication Guide “What To Look For In A Handheld Radio First off, my recommendations for radios are going to be primarily based... Read more
145 MHz Low Loss Bandpass Helical Filter
Low Loss Bandpass by Mile Kokotov Basic design of the filter is from RSGB VHF-UHF Manual, but I made some modifications. Both Inductors... Read more
Alinco Released a new radio Today – DJ-R200D
Alinco Corporation December 6, 2016, announced the latest model of the 420 / 440MHz band specified low-power handheld machine equipped with a super mu... Read more
Equipment
ACOM A2100 HF + 6M Linear Amplifier
ACOM A2100 Easy to operate The TRI is a powerful tuning aid that, together with the automatically controlled input attenuator, helps the operator to... Read more
![ColibriNANO Direct Sampling HF/6M receiver [ User Manual ]](https://qrznow.com/wp-content/uploads/2017/06/colibri_nan0_sdr11-190x122.jpg)
Review
Yaesu FT-991 compared with the FT-817ND – HF SSB and CW
FT-817ND vs FT-991 using the same Antenna – HyEndFed 5 Band. To give the FT-817ND a fighting chance, I have added the CW filter and I have conne... Read more
App - Mobile
New iOS App Available for The ARRL Repeater Directory ®
The ARRL Repeater Directory ® — introduced this week for 2015-2016 — has a newly launched companion app for Apple® iOS® devices. iPhone®, iPad®... Read more
Introduction to SmartSDR for iOS
Welcome to SmartSDR for iOS written by Marcus DL8MRE. This is an introduction video that allows you full control and access of your Flex 6000 series r... Read more
HAM QuickLog – IOS App
Mircules HAM QuickLog is great new HAM radio logging software for the iPad, for quick and easy HAM Logging. This handy app helps you to quickly... Read more
817 Companion for Yeasu 817 – App
Yeasu 817 The 817 Companion app is dedicated to all the proud owners and users of the Yeasu 817 amateur radio. The Yeasu 817 is a fantastic radio bu... Read more
Equipment
Icom AH-705 Announced on Christmas
AH-705 HF/50 MHz Automatic Antenna Tuner Features Covers the 1.8 MHz to 50 MHz bands, using a long wire element 2-way power sources using alkaline bat... Read more
mAT-705 Tuner Introduction
mAT-705 Tuner Introduction The MAT-705 is a very small and powerful tuner for portable shortwave devices, especially designed for the Icom IC-705. The... Read more
THE NEW MOUNTAIN TOPPER MTR-4B V2 BY LNR PRECISION
MTR-4B V2 Photos COMING SOON “The Mountain Topper” The LnR Precision MTR transceivers are designed to be efficient portable CW rigs. Whether climbing... Read more
NanoVNA SAA2 Version 2 Vector Network Analyzer – Ham Radio Antenna Analyzer
NanoVNA SAA2 Version 2 Vector Network Analyzer – Ham Radio Antenna Analyzer Read more
Introducing QCX-mini 5W CW transceiver!
The miniature version of our popular QCX 5W CW transceiver, with special portable-friendly features for SOTA and other portable operators: – Sma... Read more
New RFinder B1, Advanced VHF/UHF 4 Watt DMR/Analog Ham Radio Smartphone, NO CODE PLUGS NEEDED!!
“My switch back from iPhone to RFinder happened in this video. A dual band VHF/UHF radio with a newly designed receiver for better sensitivity,... Read more
