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| KL 400s Drawing power | |
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| Tweet Topic Started: Thursday, 3. November 2011, 19:05 (650 Views) | |
| Dave E | Thursday, 3. November 2011, 19:05 Post #1 |
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Hi my new KL 400s when on a low setting No 4 is drawing 23 amps I am sure it should only be about 11 to 12 amps the swr is low any ideas this on FM SSB is ok. |
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| Mark in Essex | Thursday, 3. November 2011, 19:25 Post #2 |
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26 Charlie Tango 037
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Stage 4..."what's that about 150 watts plus???? Then that sounds about right, give ot take a few watts or amps |
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[][img][/img][/url] https://www.youtube.com/user/26TANGOMIKE037/videos Nembutol numbs it all But I prefer alcohol | |
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| Lowflyer | Thursday, 3. November 2011, 19:45 Post #3 |
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108 Charlie Tango 036
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The manufacturers specs for the KL400 are way off. It needs a 40A psu or bigger to run it safely, or a decent car battery 45ah upward to get the best out of the unit. I had mine on a 30A psu at 3rd setting with 20w pep in pushing 250w out. It wanted all 30A. The tx/rx switching will be sluggish if youve not got enough supply current. Hope this helps Edited by Lowflyer, Thursday, 3. November 2011, 20:14.
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108CT036 "Some People are so Poor, all they have is Money!" UNIQUE CHARLIE TANGO UK FM CONTACTS - 74 Stations Worldwide -----> LIVE BROADCAST ON USTREAM <----- | |
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| Dave E | Thursday, 3. November 2011, 20:08 Post #4 |
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Thanks chaps for the help I have just bought a KPO KPS 280 power supply and have just realized how much the KLs draw I used to use a battery but I do like the idea of 13.8 volts when using a psu I wonder if it would be possible to connect an external power capacitor pack to slow down the drain a little on a long over |
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| BigTone | Friday, 4. November 2011, 00:15 Post #5 |
26 Charlie Tango 4498
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David, look at how FM works and how SSB works. FM is 100% duty cycle, ie its full power or its off. SSB is a type of AM but with NO carrier in other words it varies with speech levels. No speech,no RF out. Heres a link to another thread http://s3.zetaboards.com/copythat/topic/7525567/1/#new |
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| Deleted User | Friday, 4. November 2011, 06:34 Post #6 |
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Amperage is about right, the RM blurb is a little out on this |
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| Dave E | Friday, 4. November 2011, 18:23 Post #7 |
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Thanks again for the help looks like the Italian watts and amps are a little moor optimistic than ours LOL |
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