Differences
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1254pbigelow [2007/03/27 16:42] n5na |
1254pbigelow [2007/03/27 16:43] n5na |
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| **Quirks noted and possible remedies:** | **Quirks noted and possible remedies:** | ||
| - | 1.) Lots of birdies and display induced signals on the lower half of the AM broadcast band. | + | - Lots of birdies and display induced signals on the lower half of the AM broadcast band. |
| - | Remedy: Have attempted to shield out the multiplexing emissions by spray painting a graphite EMI/RF shield to the inside of the front cover. It helped a little bit. | + | * Remedy: Have attempted to shield out the multiplexing emissions by spray painting a graphite EMI/RF shield to the inside of the front cover. It helped a little bit. |
| - | 2.) Reduced sensitivity on the lower half of the AM broadcast band. | + | - Reduced sensitivity on the lower half of the AM broadcast band. |
| - | Remedy: Put a jumper across R72, eliminating that input filter. | + | * Remedy: Put a jumper across R72, eliminating that input filter. |
| 3.) FM intermod from strong FM stations. Just add 90 (2* 1st IF) to the received frequency | 3.) FM intermod from strong FM stations. Just add 90 (2* 1st IF) to the received frequency | ||
| to detetmine offending frequency. | to detetmine offending frequency. | ||
