Archive for date: June 15, 2011

Gyrator circuit in LTSpice…

June 15, 2011 | Amateur Radio | By: Mark VandeWettering

While watching TV (not very closely) I went ahead and entered the “gyrator” part of the Gyrator VLF circuit. It does indeed seem to work. No real analysis, just the circuit as I built it.

The Gyrator VLF receiver…

June 15, 2011 | Amateur Radio, Amateur Science, Astronomy, electronics | By: Mark VandeWettering

Back on June 7, there was a spectacular coronal mass ejection on the sun: Yes, I did mention this event and gave some links to VLF receivers at the time, but I’ve been thinking about this some more. As an astronomy/telescope buff, I have built simple telescopes for looking at the sun, but I haven’t […]

Software Defined Radio Links

June 15, 2011 | Amateur Radio | By: Mark VandeWettering

I own an SDR-IQ software defined radio, a Funcube Dongle (more on that later) and have built a marginally operable Softrock Lite receiver, so you might say I’m interested in Software Defined Radios. But Jeri’s tinkering with her own software defined radio has rekindled my interest in homebrewing one. I was looking for Gerald Youngblood’s […]

A Cree LED in my linear current LED Transmitter

June 15, 2011 | Amateur Radio, electronics | By: Mark VandeWettering

I was away all weekend, so I didn’t get a chance to check out my LEDs that I got from Deal Extreme last week. Tonight, I just soldered a couple of clip leads and tried it out when hooked to the linear current modulator that I built (and blogged about) before. The transmitter in this […]