Many of us tried the old “Two tin cans connected by a string” experiment as kids. [Michael Rainey, AA1TJ] never quite forgot it. Back in 2009, he built “El Silbo”, a ham radio transmitter powered entirely by his voice. El Silbo is a Double Side Band (DSB) transmitter for 75 meters. While voice is used to excite the transmitter, it doesn’t actually transmit voice. El Silbo is a CW
This week on ARRL Audio News: ARRL President Emeritus Jim Haynie, W5JBP, is a silent key The IARU General Assembly Adopts Revisions to the Region 2 Band Plan The National Geographic Channel’s new series “Mars” prominently features ham radio... Read more
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“Hello Operators. Topic of the day is the Raspberry Pi 3B+, and how I’m using it for amateur field communications. During May 18-21, I spe... Read more
InnovAntennas have invested in Ansys HFSS 2020 R2, a fully 3-dimensional mesh-based simulation package to help in the perfection and product... Read more
The new version of the well known Shared Apex Loop Array, the SAL-30 Mark II is here. The four vertical sides of the loops have been replaced by a sin... Read more
ABOUT THE AUTHOR Marga Ortigas Marga Ortigas covers the Asia-Pacific region for Al Jazeera English. Beijing, China – His kingdom was tu... Read more
Different tools for different applications. The Doctor explains the differences. Read more
Airspy HF+ The Software Defined Radio revolution brought great flexibility in VHF and UHF reception. Today we offer the best wide band receivers which... Read more
Planning officials are taking a second look at a large amateur radio tower and antenna that stirred up controversy after being installed in a backyard... Read more
by Ivo Klinkert, PA1IVO “A Multi-purpose Portable Setup – Working low-earth orbit satellites from any place Only a relatively simple setup... Read more
As “potentially catastrophic Hurricane Maria” is headed for the Virgin Islands and Puerto Rico. Frans van Santbrink, J69DS, on St. Lucia checked into... Read more
This video shows how I have made a mains filter that is extremely effective in reducing and in some cases eliminating completely EMC from the electric... Read more
The bhi GroundBreaker audio unit isolates the grounds on your bhi DSP noise cancelling product or other ancillary equipment from those of the radio sy... Read more
The American Red Cross Puerto Rico Chapter renewed its Memorandum of Understanding with the ARRL Puerto Rico Section on October 10, citing mutually be... Read more
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Raspberry Pi Powered HF Radio in an Ammo Can GoBox
InnovAntennas invest in Ansys
SAL 30 Mark II Receiving HF antenna by Array Solutions
Al Jazeera: Ham Radio and Scarborough Reef ( BS7H )
Noise Blankers and Noise Reduction -ARRL The Doctor is In
Airspy HF+ (Coming soon)
RIVERSIDE: City revisits ham radio tower decision
A Multi-purpose Portable Setup by PA1IVO
Radio Amateur on St. Lucia Relays Reports of Hurricane Devastation on Dominica
Make a mains filter for EMC & noise reduction
GroundBreaker – Isolate your audio to remove RFI and ground loop problems!
ARRL Puerto Rico Section and Red Cross Renew Memorandum of Understanding
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