Full-color and/or full-resolution graphics from the pages of QRP Homebrewer
QHB #5 -- April 2001
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The "WARC-bler" for PSK31 on 30m, by Jeff Woods, W0ODS & Fred Spinner W0FMS |
Rx Amp
Pi Filter
Tx Amp
Rx Filter
Tx Amp
2-Pole/3-Pole Filter Differences
Figure 1: Final filter designs for 1500 Ohms
Figure 2
Figure 3
Figure 4: 50-Ohm Matched Filters
Figure 5: Filter Response
Figure 6: Closer look
Figure 7: Good Match
Figure 8: Return Loss
WARC-bler spectrum at 2W
output power at 10.1433 MHz Click here to see the overall WARC-bler schematic
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