“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
NanoVNA V2 Plus4
4GHz second generation NanoVNA vector network analyzer, our own design. The V2 Plus4 is the latest hardware version with 4″ display, aluminum ca... Read more
The soon to be released GSOC from XieGu
https://www.youtube.com/watch?v=RdXYoiP3WFQ Read more
Motorola APX NEXT XE – Focused in the Extreme
Focused in the extreme. The demands of a call require you to adapt and overcome all obstacles. When your focus on the call is threatened, other lives... Read more
Portable Solar Power, Samlex Foldable Solar Panel, Off-Grid Emergency Electricity
Portable Solar Power, Samlex Foldable Solar Panel, Off-Grid Emergency Electricity The Samlex 135 watt portable solar panel with included charge contro... Read more
RGO ONE HF transceiver – PREORDER
This is third production lot.Please fill in your data so we can arrange shipping of your brand new RGO ONE shortwave transceiver right after it is bui... Read more
Northern Florida ARES Requests Clear Frequencies for HF Nets
Northern Florida Section Emergency Coordinator Karl Martin, K4HBN, is requesting that stations not directly involved in the Amateur Radio Emergency Se... Read more
21st Century Transceiver Design: The K4 High Performance Direct Sampling SDR
The Elecraft K4 High Performance Direct Sampling SDR Read more
Manufacturer Showcase with bhi Noise Cancellation Products
https://www.youtube.com/watch?v=nRHnP51IzCE Read more
“New Elecraft K4s in production
K4 TRANSCEIVER We’re pleased to announce our new top of the line transceiver, the Elecraft K4. It combines the latest in direct-sampling technology wi... Read more
An In Depth Look At ICOM IC-705 HF VHF UHF QRP Transceiver
https://www.youtube.com/watch?v=abbSuqz59co Read more
Review
YL Raisa introduces how to spell Russian Callsigns during a QSO
YL Raisa introduces how to spell Russian Callsigns during a QSO Read more
The Most Advanced DMR & 4G LTE Radio – RFinder B1
The Most Advanced DMR & 4G LTE Radio – RFinder B1 The RFinder B1 is the most advanced Dual Band (VHF/UHF) DMR Transceiver combined with an e... Read more
Getting Started On Ham Radio Satellites With Sean KX9X
Getting Started On Ham Radio Satellites With Sean KX9X Read more
Power Line Noise On Your Ham Radio? How To Find AND Get it Fixed
Power Line Noise On Your Ham Radio? How To Find AND Get it Fixed Read more
Best Ham Radios To Buy When Starting Out. VHF/UHF/HF
https://www.youtube.com/watch?v=bSF-q_qaqqg Read more
The Xeigu G90 QRP Transceiver on CW
The Xeigu G90 QRP Transceiver on CW Read more
Portable RTL – SDR Software Defined Radio with Android
Portable RTL – SDR Software Defined Radio with Android Read more
Icom IC 705 10 Features in 10 Minutes
Icom IC 705 10 Features in 10 Minutes Read more
NanoVNA comparison measuring a duplexer – NanoVNA-H4 and SAA-2N
“Is the NanoVNA suitable to measure/adjust a typical antenna duplexer? This video compares the NanoVNA-H4 and the SAA-2N VNAs with a professiona... Read more
RFinder HCP1 Hotspot – Hot Chili Peppa! Quad Band Pi-star Hotspot
https://www.youtube.com/watch?v=pMzM1AUHT0w Read more
