Receiver: Hallicrafters SX-117 
| Band |     MDS | Blocking DR    | Two-tone DR | 
 |  |   (20 kHz) |   (20 kHz) | 
| 80 meters    | -139 dBm     |     108 dB |     81 dB | 
| 40 meters    | -138 dBm     |     106 dB |     78 dB | 
| 20 meters    | -140 dBm     |     107 dB |     76 dB | 
AM audio S/N: 44 dB
Additional measurements of AM audio frequency response and distortion can be found at
http://www.w1vd.com/BAreceivertest.htmlScroll down to link Hallicrafters SX-117
Many thanks to Arnie, K1NFE for making this receiver available for testing.