“Join us for a webinar on Feb 16, 2017 at 9:00 PM EST Register now! –
https://attendee.gotowebinar.com/register/7735767269616129539
JC N4IS covers the concepts and decisions to build your own WF low band high
performance receive antenna. Topics include:
1- What is a Waller Flag
2- Horizontal or vertical poles.
3- Common node noise, and detuning towers or TX antennas
4- Phasing lines and transformers
5- Feed lines and chokes
6- Preamplifiers, filter and R/T switches
7- How to measure pattern (polar plot)
8- How to test and evaluate results.
73
Ken K4ZW”
Videos
Equipment
IC-9700 Firmware Update
Download Type Firmware Model name IC-9700 Version Version 1.23 Update 2020/04/03 Major changes Changes from Version 1.21 Changed the screen drawing se... Read more
Ailunce HS2 HF VHF UHF SDR Transceiver
Ailunce HS2 is an ultra-portable full-frequency full-mode SDR radio. The HAM-BOX mobile app we developed allows the mobile phone to easily control and... Read more
A Simple High-Frequency Communications Receiver
See What QST Has to Offer! QST is the monthly membership journal of ARRL. Each issue is your source for equipment reviews, technical tips, projects, n... Read more
CAR SEAT BOLT MOUNT WITH MAGNETIC MIC HOLDER FOR KENWOOD TM-D710
We are very excited to offer this new mounting solution for the Kenwood TM-D710. It will also work with Kenwood TM-D700A TM-D700E TM-D710E. There are... Read more
DX Engineering Ladder Line Surge Protector DXE-LLSP
Built by popular demand, the DX Engineering Ladder Line Surge Protector is ready to be placed in line with your balanced feedline antenna system! For... Read more
![openSPOT3 introduction [ VIDEO ]](https://qrznow.com/wp-content/uploads/2020/03/s2-190x122.jpg)
openSPOT3 introduction [ VIDEO ]
Home » openSPOT3 ••••••••• The openSPOT3 is a battery powered, portable, standalone digital radio internet gateway (hotspot) designed mainly for amate... Read more
Nooelec Ham It Up NANO – HF Upconverter
Ham It Up Nano – Tiny HF Upconverter w/ Black Enclosure, TCXO, & Bias-Tee Power Support A highly-portable RF (LF/MF/HF) converter for softwa... Read more
Review
Annual Armed Forces Day Crossband Test Postponed
Due to the ongoing COVID-19 response and mitigation actions, the 2020 Armed Forces Day (AFD) Crossband Test scheduled for Saturday, May 9, has been po... Read more
Unboxing the AnyTone AT-D578UV III Pro DMR/FM Mobile Radio
AnyTone AT-D578UVIIIPRO Tri-Band Amateur DMR Mobile Radio with Bluetooth, GPS and BridgeCom University Want the latest and greatest DMR radio? We ar... Read more
Replacing a bad PL-259 Connector
“Since we all need to stay at home anyway, let’s fix up the station! I need to review a new mobile radio, and the connector on my VHF/UHF... Read more
Ofcom engineers shine a light on interference issue
Ofcom’s spectrum assurance team recently solved a sky-high interference case that took more than a little detective work to crack. The team were conta... Read more
A Review of the Power Genius XL – By Mack McCormick, W4AX
Power Genius XL Searching for the highest performing solid state linear amplifier on the market today? If so, then the Power Genius XL (PGXL) amplifie... Read more
