What-makes-an-engineer

What is Hellschreiber. Hellschreiber is a German name, meaning "bright writing", or "clear writing". Hellschreiber is anything but a new mode. It was first patented in 1929 which makes it the oldest machine generated data transmission mode used in amateur radio. To put this in perspective, SSB...

Experimental receiver for VLF. I received electromagnetic (radio) signals between 14 and 22 KHz with a capacitor of 4,7 NF over the showed coil. The schematic is identical to that of the storm detector IV (with the 6088 Tube), the coil is differently constructed. There is one more transistor...

Amature Radio operators or sometimes better known as Ham radio operators are on the hunt for mystery radio signal that is jamming automotive remotes. Imagine you think your car is locked because you used your remote to lock it, now imagine the horror when you find out its not. Well thats what has...

The Active Cantenna is Back! But this time we’ve added a Direct TV Satellite Dish to see what wifi improvements, if any, it makes. Tommy brings us some cool night time photography tricks (or treats). Jim finishes the Pudding Cup Capacitor in this episode. And George found a neat Free PDF...

If you’ve ever wondered what a Hamfest is, then this episode is for you. We visit Jackson Amateur Radio Club’s ‘2006 Capital City Hamfest’. We’ve got an ARRL net being called, highlights from the Skywarn Forum, ARRL Katrina Review, an amateur radio Satellite Demonstration and lots...

Jim discusses two Network Tools that everyone already has. George digs into the junk box and comes up with a 9-volt battery clip tip. Tommy talks about using the Burn and Dodge tools to get better detail out of your photos. This month’s spotlight is on the Basic Stamp Microcontroller....

In this video I explain what DSTAR is and describe some of the neat features that it has.

Many mobile antenna installers fail to follow simple rules in their installation. This often results in a setup that has high losses or poor radiation patterns. High losses rob you of your output power. !! This is a VERY simplified video covering a complex subject.

Slow Scan TV using my Yaesu FT-847 on 14.230Mhz (20 Meter Band) Although we can now send pictures via more...e-mail, What Fun it is to send and receive them via Radio with the Only thing between you and the other person is the Air we breath!! :-) SSTV is a method of Sending and Receiving...