This category is for information about equipment that is considered a retrofit or other add-on to basic equipment (mainly receivers). Such items may include pre-amplifiers, IF filters, external speaker systems, DSP and other noise reduction systems.
Subcategories 1
Sites 2
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- Quantics W9GR Digital Signal Processors Information about the DSP-3 which removes noise and other unwanted interference from voice and data communications signals.
- WD8DAS Sync Page Offers information about synchronous detection and retrofit synchronous detectors in kit and finished form.