Flex Direct Conversion Receiver - My HeathKit QRP HW-8 CW XCVR from 1968 is also a Direct Conversion as well had lots of Fun with it !

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Flex Direct Conversion Receiver - Fun Radio - My HeathKit QRP HW-8 XCVR from 1968 is also a Direct Conversion Receiver a well had lots of Fun with it !
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Mike Aust

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  • great

Posted 2 years ago

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2 years ago
Photo of KY6LA - Howard

KY6LA - Howard, Elmer

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All Crystal Radios are direct sampling
2016-09-07T12:16:38+00:00
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W7NGA

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no sampling, no conversion artifacts, zero phase noise. clearly the wave of the future ..
2 years ago
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W5XZ - dan

  • 564 Posts
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"grandpa, what's a mixer/"

oh, we just use ADC's now...

73
2 years ago
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Ken - NM9P, Elmer

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My first home brew receiver, other than a crystal receiver, was a simple "Infinite impedance detector" out of the ARRL Handbook, using a FET, hand wound coil (on a toilet paper tube), variable capacitor scarfed from an old AM receiver, and a few resistors and capacitors. I fed the audio into my stereo's auxiliary audio input, connected it to my HF dipole. It was amazing to hear multiple shortwave broadcast stations fading in and out as the band rose and fell. I could tune several MHZ, and the bandwidth was wide as a barn door, allowing several stations in at the same time. But it was almost magical, because I built it myself!


This was about 1981, I had been a ham for about seven years, but it was my first home brew radio, and one of my first solid state projects.
(Edited)
2 years ago
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Mike Aust

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Watch out Flex ! The new HW-8 is here !
(Edited)
2 years ago
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Rick Hadley - W0FG

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I did my first DXPedition with an HW-8, WA0FYG/VP2S (now J8), using battery power and a low 40m dipole for 40 & 15 strung between a couple of little trees behind my in-law's house on Bequia.
2 years ago
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Jay / NO5J

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I'm a big fan of trees. 
 SDRgadgets

73, Jay - NO5J

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