What’s that signal’s bandwith?
Engineers will ask the question “how much bandwidth do I need for that signal?” Typically, the question relates to making sure that the signal can propagate through a component or system and come out the other end without any degradation…….Read more
What’s all this e-flea stuff, anyway?
Several ham radio clubs put on an electronics flea market in Silicon Valley during the summer months. They shut down from October to February, since Californians think 60°F is unbearably cold. My buddy Dave Ruigh calls it the eFlea, and that name has stuck with our pals. Last year, the eFlea was held on the second Saturday of the month at the Fry’s Electronics parking lot in Sunnyvale……Read more
Characteristic impedance, or not
Nixon didn’t like something he was being told so he got rid of the messengers. Something like that happened to me at a would-be client.
I was asked to certify that a particular twisted-pair cable would exhibit a particular characteristic impedance. There were two wires inside of a braided shield and in examining the cable, I could feel the two wires through the braid. The wires were not dimensionally consistent along the cable’s length. Instead they were kinky, gnarled, and whatever other adjectives you might care to apply………Read more
Rory says
Hey, Dan, since you have a 6 land, call your welcome to come back anytime. 73 N6OIL
Dan KB6NU says
Thanks, but I can’t afford it! :)
Dave New, N8SBE says
Re: the cable article. I was recently victimized by a counterfeit USB cable from a shady Amazon seller. It was labeled with the incorrect Samsung part number (it the part number was for a USB 3.0 cable with the flat connector, but this was a micro-USB cable), and when put on a cable tester, showed awful test patterns.
That stuff is out there.