Crystal Radio constructed with unusually large passive components with the goal of obtaining an extremely high Q. Variable capacitor from a B-17 Bomber’s antenna tuner and the final tank coil from a 50KW AM Broadcast transmitter once used by Chicago area WMAQ Radio’s Continental equipment are employed for outstanding performance.
SainSonic releases its debut radios – SainSonic RST599 two-way radios. This revolutionary design marks the start of an exciting new product line in SainSonic’s portfolio. This little blockbuster is designed with users in mind.... Read more
The changes include: Support for several additional radios including the Yaesu FTdx101D. A fix for typing several F keys quickly. Fixes and additions... Read more
Police in Evanston, Illinois, contacted the ARRL Lab, after an apparent interference source began plaguing wireless vehicle key fobs, cell phones, and... Read more
Available versions: 43 – available languages: 28 – more languages coming: 6 Prefix / Country Language (Direct link) Via society website PP... Read more
The ARRL Repeater Directory ® — introduced this week for 2015-2016 — has a newly launched companion app for Apple® iOS® devices. iPhone®, iPad®... Read more