Tag Archives: Homebrew

A Classie WSPR Transceiver

Update: An updated version of the controller used with the Classie WSPR transceiver is presented here. Because of my location, amateur radio operations are limited to low power and disadvantaged antennas. Therefore, the WSPR (Weak Signal Propagation Reporter) protocol immediately caught my eye when I first ran across it. My primary interest is building, so …

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Analysis Of A Failed Class-E Amplifier

For the last couple of weeks I’ve gone back to my electronics roots and have been working on an amateur radio related project. Specifically, I’ve been working on a low power transceiver to use as a WSPR beacon. The schematic for the transmit portion is shown below, a class E amplifier intended to be driven …

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Importing Bitmapped PCB Images Into Eagle CAD

There are lots of old magazine articles and electronics handbooks out there that include project printed circuit board (PCB) images. This is great for seeing how the circuit is laid out but what do you do if you want to actually produce the board? I ran into this problem over the Labor Day weekend when …

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Tabula Candida

Doodles of a distracted historian

rtl-sdr.com

A blog about RTL-SDR (RTL2832) and cheap software defined radio

DuWayne's Place

Computers, Electronics, and Amateur Radio from KC3XM

QRP HomeBuilder - QRPHB -

Computers, Electronics, and Amateur Radio from KC3XM

Open Emitter

Computers, Electronics, and Amateur Radio from KC3XM

Ripples in the Ether

Emanations from Amateur Radio Station NT7S

m0xpd's 'Shack Nasties'

Computers, Electronics, and Amateur Radio from KC3XM