Version 3.0 of our popular traps are now available. Version 3.0 are supplied with 4 high quality Cornell Dubilier CDV16 RF Mica capacitors for greatly improved performance. The new capacitors improve the Q of the traps, and in doing so, improve their isolation, making antenna adjustment easier.
______________________
Amended instructions – 22 June 2015
A few people have reported getting odd results with our traps. As a result I did some SPICE modelling and found that the problem was due to the use of long test leads between the antenna analyser and the traps. This introduces capacitance across the traps giving incorrect readings. The photograph below shows a low capacitance test lead that works just fine.
See More: Link
“Always great to see Ray Novak at every hamfest I attend. This year was at the Huntsville Hamfest 2021. A lot of people are eagerly waiting for... Read more
The PSDR 2.5 PCBs came back and look great (they are a little more orange than red though, what’s up with that?) As I explained in the video, I... Read more
The RSGB is pleased to announce that the first successful candidates in the online, remotely-invigilated amateur radio exams have now received their c... Read more
Rotator Genius is a smart rotator controller that uses a magnetic sensor for reading azimuth. It can be controlled by a Windows or Android app. Motor... Read more
A new paperback aimed at the Amateur Radio Emergency Service Community, Power Out! After-Action Report and Improvement Plan by Susan Halbert, KG4VWI;... Read more
Discusses the difference between Yagi antennas, log periodic antennas, and phased array antennas. Read more
The challenge was to breathe new life into a 75 year old Marconi CR100 wireless receiver using the latest SDR technology. The resulting demo will be a... Read more
Other satellites announced for the ELaNa 25 launch include Argus (St. Louis University), 437 MHz telemetry; AzTechSat-1 (NASA Ames Research Center) 43... Read more
YAESU FT DX 3000 & SDRplay More: https://www.hb9fxq.ch. Read more
Over the past few months CubicSDR has been expanding to support more devices via the SoapySDR library and those releases are now reaching a somewhat s... Read more
Amateur Radio Roundtable and host Tom Medlin, W5KUB, will be back at Dayton Hamvention to livestream the activity and action before, during, and after... Read more
Introduction: There are a variety of programs available to the Radio Amateur that will calculate virtually every transmission line parameter that one... Read more
HYBRID DOUBLE QUAD ANTENNA 2M Double quad antenna amateurradio 2m Antenna for Amateurradio, Hamradio 2m-band VHF (frequency 144.000 MHz – 146... Read more
2BSIQ – Two Band Synchronized Interleaved QSOs (I think this name is more appropriate than dual CQ, because the key to mega rate is the interleaved sy... Read more
Specifications < Mode RF Drive Output Power Input Impedance Output Impedance ... Read more
Recent Posts
Icom ID-52 DSTAR Handheld With Ray Novak At Huntsville Hamfest!
PortableSDR 2.5 Debut!
First remotely-invigilated exam call signs issued
Rotator Genius – 4O3A
Florida ARES Group Publishes After-Action Book
![Exploring the Yagi, Log Periodic, and Phased Array [ Video ]](https://qrznow.com/wp-content/uploads/2017/09/2-265x168.jpg)
Exploring the Yagi, Log Periodic, and Phased Array [ Video ]
USING A 75 YEAR OLD MARCONI CR100 RADIO TO CONTROL AN SDRPLAY RSP
Amateur Radio CubeSats among 15 Set to Launch on October 21 from Wallops Island
Overview – YAESU FT DX 3000 & SDRplay
CubicSDR v0.1.20-alpha Release
Amateur Radio Roundtable to Livestream 50 Hours of Dayton Hamvention®
Transmission Line Calculator by AA3RL
Hybrid Double Quad Antenna 2m 2/HDQ5
CR3OO ( CT1BOH ) Video 2BSIQ (Two Bands Syncronized Interleaved QSOs)
I6 Dedicated RF 1.5KW – 1.8-32 MHz, 48-54 MHz
There are no ads, please add some
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fhf-antenna-traps-v3-0%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
