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Capt205
Member
Username: Capt205

Post Number: 62
Registered: 5-2005
Posted on Wednesday, March 15, 2006 - 2:04 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Setup...Magnum S9 into a Palomar Elite 450HD into a Wilson 5000 roof mount. SWR's are 1.2:1 between amp and antenna, same whether amp is on or off. Power for amp is direct to the battery, for both the positive and the negative, with an additional ground from amp to seat frame. Have used both 6' and 9' jumpers.

Now the problem...I am haveing an issue where the amp sometimes will not un-key when I get off the key. I am not long winded when this happens. If I quickly hit the key one time when this happens, the amp will un-key. I have not noticed any particular pattern for when this happens, nor does it happen all the time. I have noticed it happens more often when the amp is on high.

Any suggestions?
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Scoobydoo
Member
Username: Scoobydoo

Post Number: 95
Registered: 8-2005
Posted on Wednesday, March 15, 2006 - 4:11 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I dont know to much about amps but I took my Boomer 250 apart once just to see what was inside and there was a mechanical relay in there. Maybe yours is arching on high power and sticking? Again I dont know too much about electronics so I could be way off.
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Moonraker
Intermediate Member
Username: Moonraker

Post Number: 180
Registered: 3-2005


Posted on Wednesday, March 15, 2006 - 11:23 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

If the SWR is good, I would say too much drive. How much dead key are you putting into it?
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Capt205
Member
Username: Capt205

Post Number: 64
Registered: 5-2005
Posted on Thursday, March 16, 2006 - 12:20 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

DK is 1.5 watts with a swing to 48. Today, I switched back to the 6' jumper, and so far, it has not hung up.
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Viking
Intermediate Member
Username: Viking

Post Number: 237
Registered: 2-2002


Posted on Thursday, March 16, 2006 - 7:08 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

...and it probably won't. That's the fix I've heard of.
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Madigan
New member
Username: Madigan

Post Number: 8
Registered: 11-2005
Posted on Saturday, March 25, 2006 - 6:00 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Also, stray RF can actually cause this issue as well, make sure the amp is well grounded to the chassis of the vehicle as well as the radio using a flat braided copperwound cable. Good swr definately helps but cant prevent all external rf from getting into things. We recently solved a friends messenger unit from the same issue by doing the above mentioned..Kudos

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