WBR Plus Regenerative Receiver |
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I made my first novice contact in the fall of 1959 using a three tube regenerative receiver and a Heathkit DX-35 transmitter. I only made a few more contacts with that Knight Kit receiver before I got a National NC-125 and never looked back...until 2001. I experimented with the Desert Rat regenerative receiver from the QRPp magazine, got it to work and enjoyed listening to shortwave stations, but I needed the parts for other projects so I tore it down. |
Then, in September of 2001 I went to a hamfest in Mesa, Arizona and fell in with the AZQRPion club members who were discussing a modification to the WBR receiver from the August QST. Gale Thomas reworked the receiver audio section and built up a working model and was offering the schematic to anyone interested in building another prototype. I grabbed a copy, took it home and started ordering parts. I didn't have a chance to start building the receiver until the holiday season, but over a period of two weeks, I melted solder between holiday food, family visits, and lots of interruptions. |
I built the radio on a perfboard and mounted the finished radio in a plastic enclosure. I had forgotten just how good the regenerative receivers could work. I can hear just about everthing on the band so it has pretty good sensitivity. Of course, it doesn't have the selectivity that you would find with a 4 pole crystal filter, but the 'ol ear does a pretty good job except for the fox hunts and contests when you find more than a dozen stations per Khz. Here's a sample of CW and SSB audio clips you might enjoy. |
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