An 80m hand-held DF receiver isn't difficult to build, especially using direct conversion (though a superhet isn't that much more difficult and gives much better performance.). From Wordnik.com. [eHam.net News] Reference
I was aware that it is a very highly regarded triple superhet receiver, but this one was in such poor cosmetic condition I thought that I was taking on a long term restoration project. From Wordnik.com. [eHam.net News] Reference
VCO for VHF applications, an operating range of 100MHz to 1GHz, precision baseband filtering with selectable bandwidths and the smallest PCB area, typically less than 50 per cent of a dual superhet. From Wordnik.com. [Electronicstalk - electronics industry news] Reference
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