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563upgrade [2015/11/24 12:53] n1eu |
563upgrade [2015/11/24 12:54] n1eu |
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*The later 564's have certain changes to top and bottom foil grounding on certain boards to improve 10M birdies which are a major problem with this rig. | *The later 564's have certain changes to top and bottom foil grounding on certain boards to improve 10M birdies which are a major problem with this rig. | ||
*The BPF filter on later 564's has a broadcast band mod to improve intermod in the presence of strong local AM BCB or SW signals. Night and Day difference on my rig. | *The BPF filter on later 564's has a broadcast band mod to improve intermod in the presence of strong local AM BCB or SW signals. Night and Day difference on my rig. | ||
- | *An aftermarket mod from INRAD is available to improve the SSB audio response involving a swap of two component values. This became a semi-approved factory mod. Stock audio is degraded by passing through the DSP chip when DSP is not engaged (N1EU note: "high pass filtered" is a more accurate description than "degraded" - see [[http://omni6.wikidot.com/rxaudio|Omni6 rx audio discussion]] | + | *An aftermarket mod from INRAD is available to improve the SSB audio response involving a swap of two component values. This became a semi-approved factory mod. Stock audio is degraded by passing through the DSP chip when DSP is not engaged //(N1EU note: "high pass filtered" is a more accurate description than "degraded" - see [[http://omni6.wikidot.com/rxaudio|Omni6 rx audio discussion]])// |
*Later 564's use significant amounts of SMT construction | *Later 564's use significant amounts of SMT construction | ||