==== New Category Multi 2TX (2021-03) We will have the "MULTI-OPERATOR 2-TX" category in 2021. (CQ-WW Two-TX QSY rule will be applied) The exact rules were published in Feb. 2021. ==== Web Log Submission (2020-04) (Thanks to JH3LFL for the Code) You can Upload your log file from the following URL; Web Log Submission ==== PDF Certificate [No more Paper Certificate will be published but the PDF only.] (Thanks to JH3LFL for the Code) ** PDF certificate will be issued to the Winners only. The winners are marked "*" in the result. All PDF certificates upto 2021CW are available (2021-09) All the winners can generate your PDF certificate here; Click -> PDF Cert If you have any problem(s) to generate the certificate, please contact JE1CKA Tack Kumagai, je1cka@gmail.com === Plaque program Since we lost the sponsor for JIDX. The plaque program is not running yet. It will be announced as soon as possible - be patience If you do not receive past certificates or plaques, please contact JIDX-Chairman(jidx-chairman@jidx.org) or Please use the following Bulletin Board JIDX Contest === Contact If you have any inquiries, please send an email to; je1cka@gmail.com Please indicate "JIDX Contest #Year #Mode #Your-callsign" (ie. JIDX Contest 2015 CW JE1CKA) in the Subject: line. Without this indication, your email will go to spam folder. http://jidx.org/index.html
Antenna
Kojinsha – KA1-DP – 7-50MHz – HF Antenna
Model KA1-DP Gain/Size Frequency Range 7-50 Element 1 Number of Elements for Each Band 7-50MHz DP Longest Element(m) 10.4 Power Rating 7/10MHz 1.2kW S… Read more
What’s Inside a 49:1 Unun?
Terence, 2E0IPK, asks “What makes a 49:1 unun and what does 49:1 actually mean? Read more
HF Mobile Antennas by Ham Nation
Gordon West (WB6NOA) talks about HF mobile antennas, and getting the feed-point impedance at 50 Ohms. Also covered, is a recommendation on the type of… Read more
JVP Antennas back to the market!
JVP Antenas was born in 1982 by José Vasallo Paleologo LU1FJ, former LU5FHM with the idea of manufacturing high performance antennas for amateur rad… Read more
Attaching Coax to a Dipole
Gordon, KO4OCO, in reference to Dave’s 40 meter dipole video, he asks how the actual connection between the coupler and the antenna wire was mad… Read more
Review
Geochron Digital 4k UHD Review
“This is the ultimate jewelry for your dream ham shack! The Geochron Digital 4k UHD gives viewers beautiful displays of the Earth with the sunri… Read more
How To Direction Find Radio Stations With The Internet!
Is there a station that you really want to discover where they are transmitting from? http://kiwisdr.com/ has a solution. By using multiple receivers… Read more
Ham Radio Forms a Planet-Sized Space Weather Sensor Network
The article “Ham Radio Forms a Planet-Sized Space Weather Sensor Network,” appeared on February 9 in Eos, Earth & Space Science News — an American… Read more
Equipment
Flex Radio announces The Flex 6400 and 6600 series SDR Radios – Courtesy of Waters & Stanton
Waters & Stanton, the SDR Transceiver pioneer supplier in the UK announced today the launch of the new Flex 6400 and 6600 series radios which will… Read more
Lab599 Discovery TX-500
Today i’m bringing you an update on a very exciting qrp ham radio from Lab599. It’s called the Discovery TX-500. The TX500 is a HF & 6… Read more
Ultra Wide-band Coverage SDR Receiver MK3
Ultra Wide-band Coverage SDR Receiver MK3 • Full coverage reception form 100KHz to 2GHz SDR • Independent antenna inputs for Shortwave and VHF • USB c… Read more
Fairwaves launches new SDR products
Fairwaves is launching two new “X“- products this fall: XYNC – the ultimate low-cost massive MIMO SDR, with up to 32×32 transmit/receive channels XCOM… Read more
CW TOUCH PADDLES
Product Features and use: · Electronic keyer paddles using electrostatic touch paddle technology · Because there are no moving par… Read more
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