Samsung UN55HU LED TV
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| Feb 28th 2017, 23:24 | |
NI0KTotal Topics: 0 Total Posts: 0 |
The TV radiates video buzz in the 440 MHz ham band only when the set is on. Ferrites on the power cord have no effect. Any suggestions? |
| Mar 1st 2017, 16:55 | |
W1VTSuper Moderator Total Topics: 0 Total Posts: 0 |
A 70 cm whip antenna is just six inches long. A piece of wire inside the TV set can be an effective radiator at that frequency. You may be able to move the 70 cm antenna to reduce the interference. A directional 70 cm antenna would also help. In theory, a shield between the TV set and the antenna would also eliminate the interference, but that may not be practical. Zack W1VT ARRL Senior Lab Engineer |
| Mar 2nd 2017, 17:05 | |
NI0KTotal Topics: 0 Total Posts: 0 |
The TV's supplied power cable is ungrounded. Would grounding the antenna connector help? |
| Mar 2nd 2017, 17:35 | |
W1VTSuper Moderator Total Topics: 0 Total Posts: 0 |
If there is wire inside the TV set radiating through a plastic case grounding the antenna connector or power cable is unlikely to help. |
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