Tag: Amateur

“Gimme Five” reloaded – A compact 5 band QRP SSB transceiver in SMD technology: VFO, LO, MCU etc.

As mentioned in the introductory article to this radio the digital components in this transceiver are pre-manufactured modules that have only been put together in a more or less sensible way. ;-). These modules are: AD9850 as variable frequency oscillator (VFO), China made no-name board, Si5351 as local oscillator (LO) produced by “Adafruit”, Arduino Pro…

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An experimental HF 6-band SSB transceiver – Part 5: Analog Affairs – Getting Measurement Data

This short article will describe the adapter board that is connected to analog data sources and that is converting the respective voltage data into suitable voltage levels for the ADC inputs PA0:PA4 at the microcontroller: The following data will be converted and later shown on the display: User keys (Key1:Key3) TX power measurement PA temperature…

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Shrinking a QRP transceiver to (nearly) the size of a pack of cigarettes

Hint: This article is only a preview to this miniature sideband transceiver. The full description can be found here: https://dk7ih.de/2019/04/22/revision-of-the-cigarette-pack-transceiver/ The challenge started some weeks ago, when John, ZL2TCA, commented to this blog you next challange is to build a rig into a cigerette packet size case. My problem: I don’t smoke, have never smoked…

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