| Author |
Message |
    
Freebird
| | Posted on Wednesday, January 22, 2003 - 8:16 pm: | 
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I am running a cobra mobile on a power pack and when i talk there is a low hum in my radio. It only does when i transmit.When i touch the metal part of the mic connector or the pl 259 connector it goes away then when i take my finger off the hum comes right back.what is this anyway? |
Carolinagold
| | Posted on Wednesday, January 22, 2003 - 8:43 pm: |
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Freebird. To me it sounds like a lose shield wire in your mic or on the mic plug.
Thats just my $.02
But it could be somthing else |
Ironmask
| | Posted on Wednesday, January 22, 2003 - 8:56 pm: |
|
Freebird,
I am not a tech but I think you have a ground problem. Does the power pack have a three prong plug? Are you grounded from case to case and house ground. You said you touch the connector and the hum goes away. You are acting as the ground.
Hope this helps! |
307
| | Posted on Thursday, January 23, 2003 - 8:21 pm: |
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Actually it sounds to me like the power supply is not a really regulated supply OR it is to small (current). What kind and what amp rating is it?
307 |
Freebird
| | Posted on Saturday, January 25, 2003 - 12:30 am: |
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well it is a regulated power supply but its only a 3 amp one.but for some reason its doing making that sound anymore. |
307
| | Posted on Saturday, January 25, 2003 - 9:35 pm: |
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Thats why...3 amps is pushing it ..you need at least 5 amps...
307 |
