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  1. Graham634

    Graham634 New Member

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    Hi all have a bran new set of 350 rm amp worked for one day today they have tripped out and won’t reset the tax light comes on but there’s no amp output power any ideas pleas


     

  2. Big Kahuna

    Big Kahuna Sr. Member

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    Which model RM amp do you have? The BLA 350 base amp?
     
  3. SIX-SHOOTER

    SIX-SHOOTER Sr. Member

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    They don't like High Drive at all.None of the RM amplifiers.if you keyed much into it then more than likely it Smoked the finals.The output is overrated on every one I have ever tested.

    SIX-SHOOTER
     
  4. Graham634

    Graham634 New Member

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    Yes 350base amp
     
  5. Graham634

    Graham634 New Member

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    My input was 10 watts it came up with high swr but was only 1.5:1
     
  6. Big Kahuna

    Big Kahuna Sr. Member

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    10 watt deadkey or 10 watts total peak into the amplifier? What radio were you using with it?

    This is interesting -

    These amplifiers include fast hardware protection circuits to protect the power transistors in the event of a high SWR condition on the antenna feedline.

    Here is a good read on this amp - https://radioaficion.com/cms/bla350-plus/


    Have you tried unplugging the amp from the wall? If it has protection circuits built into it and if one of them are triggered sometimes that stuff needs to have power removed to reset.

    No idea in these types of amplifiers if that's the case but worth a try.



     
  7. SIX-SHOOTER

    SIX-SHOOTER Sr. Member

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    A 1.5.1 SWR is not High and I don’t know that output power can increase from SWR but it may give a False Reading.I guess the 10 watts is Peak Power not dead key? The dead key should be 4 watts or less from all that I have seen and tested.Lots of chat online about these amplifiers failing and not being what they are being sold as.Lots of hyped numbers and confusing specs but they do amplify for sure.

    SIX-SHOOTER
     
  8. Mudfoot

    Mudfoot Elmer

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    Some of the newer ones digest higher input.
     
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  9. Graham634

    Graham634 New Member

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    Ok many thanks they are going back I’ve seen a few thing online now where people have had problems many thanks Graham
     
    SIX-SHOOTER likes this.
  10. Mudfoot

    Mudfoot Elmer

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    I've had many RM amps. Treat them right and they'll perform for years. Keep them cool (just like any amp) and observe input power. The later RM builds are better quality and are a good buy. I have one KL-203 that's been operating for years.
     
    Slowmover, ForestRunner98 and Tokin like this.
  11. Tokin

    Tokin 42Zero Tampa

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    HEAT KILLS.
    That is all...
     
    Slowmover likes this.
  12. r carl

    r carl Member

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    Is the black 2 button KL203 the latest version? Is there a source here to buy from?
     
    Slowmover likes this.
  13. Slowmover

    Slowmover Sr. Member

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    I’ve used picclick to find deals where price & shipping are low. Bought a pair for not a whole lot over $100 recently.

    .
     
    r carl and ForestRunner98 like this.
  14. ForestRunner98

    ForestRunner98 Active Member

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    That’s the one I have. Just got it in February. 2w DK swings to 8-9w. 50w carrier and swings a bit over 100w. So I believe it’s 2:1 If I get the radio down to 1w it should have a 25w carrier and be closer to 4:1 It does get warm when talking for a bit. I have a fan placed on top so I am not worried about heat. I am also not a jabber jaw so ya it works great. I know a member that got his RM on Newegg. Great price including shipping.
     
    r carl likes this.
  15. Graham634

    Graham634 New Member

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    Hi I’ve tried all of that and nothing worked watched one blogg where he had same problem and he put it upside down in box and it then worked lol
    ok cool thank you iam using a 148 10 watts peak
     

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