Tag: frequency

John, AD8IQ, has a question. Which is more important in an antenna system, the lowest SWR or the 50 ohm impedance? Watch to learn which…

Members of the Philippines radio society ( PARA ) are currently responding to the damage and loss of life caused by Typhoon Nalgae which struck…

According to this month’s ON THE AIR podcast, 222MHz is considered the “forgotten” frequency band. A benefit to this band is that it’s relatively quiet…

Graphical Frequency Allocations Download and print PDF documents using Adobe Reader. Frequency Bands Chart [PDF] (8.5 X 11; grayscale) Frequency Bands Chart [PDF] (8.5 X 11; black/white) Frequency Bands Chart [PDF] (8.5 X 11; color)…

The Belgian telecommunication authority BIPT informs that a military exercise will take place in Elzenborn near the German-Belgian border until 18 June 2022, during which…

“The feedline to an antenna will perform better if the antenna has the same impedance. Jim Heath W6LG uses the RigExpert AA-2000 to measure a…

Icom Incorporated (Headquarters: Hirano-ku, Osaka, President: Hiroshi Nakaoka) has been doing technical research on a new project to create a product from scratch by utilizing…

The FCC has announced that rule changes detailed in a lengthy 2019 Report and Order governing RF exposure standards go into effect on May 3, 2021. The…

This is the third in a series of videos following my efforts to track down a source of local QRM / Radio Interference. Following the…

Reacting to Capacitance, Inductance, Resistance, Frequency Antenna W4OP Loop Antenna January 12, 2017 No comments It seems that more and more, amateurs are facing increasingly…

    VHF 1240-1300 MHz discussed at CEPT SE 40 meeting July 14, 2020 No comments The 69th meeting of CEPT ECC Working Group SE-40,…

Grad student Kristina Collins, KD8OXT, in Cleveland, Ohio, is looking for radio amateurs and shortwave listeners — particularly in Africa and Asia — to help…

“Here we take a look at the ADALM-PLUTO frequency expansion modification to give us 70 MHz through to 6GHz. Mine actually went as low as…

DOWNLOAD .PDF LIST BELOW   VHF Connect Systems CS120D UHF DMR | Newest DMR Handheld from Connect Systems March 31, 2020 No comments Read more…

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, news…

Official QO-100 International Emergency Frequency! In order to coordinate potential emergency communications during the actual or any other crisis, the following frequency will be assigned…

Information about the US Amateur Bands is available on the Frequency Allocations page as well as the frequency bands chart. Printing the band charts Download and print…

Emergency Net on 7.110 MHz “A tsunami alert has been issued after a 7.4 magnitude earthquake struck off the northwest of Indonesia‘s Maluku Islands. The tremor was…

HamSCI and the Case Amateur Radio Club of Case Western Reserve University (W8EDU) will sponsor a “Festival of Frequency Measurement” on WWV’s centennial, October 1,…

What this lad has done with this screen for the 817 is astounding. CAT, CW decoder, waterfall, frequency readout, audio filter and audio recording. What…

In April 12, ARRL will conduct the Frequency Measuring Test (FMT), a tradition that dates back to 1931. In that era, prospective participants were promised…

“When using the dual tuners of the RSPduo, or multiple RSPs on a single computer you sometimes want them all tuned to the same frequency,…

The Indonesian National Society ORARI immediately established an Emergency Net on 7.110 MHz and also activated the Lapan-Orari IO-86 satellite as a back up.  …

The April Frequency Measuring Test (FMT) will take place on Friday, April 6, 0100 until 0225 UTC (the evening of Thursday, April 5 in US…

An updated ARRL frequency chart is now available for printing and downloading at http://www.arrl.org/graphical-frequency-allocations. The chart has been updated to include our new bands at 2,200…