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RM KL-203 owners.. How big is your PSU?
Topic Started: Wednesday, 9. November 2011, 19:35 (3,196 Views)
Mudslinger
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I have here a RM KL-203p Linear, and I am considering buying a PSU to run it.

The specs say that the current drain is 10A on AM, however past experience with smaller RM amps has taught me that this is a conservative estimate. (My 7-9A PSU wouldn't run a KL-40 which is meant to draw 5 Amps).

So the question is, what size PSU are my fellow KL-203(P) owners using to run theirs?

I can get a good deal on a 20A unit, and I was hoping that will be enough to run the radio and the linear together.

Cheers.
Edited by Mudslinger, Wednesday, 9. November 2011, 19:36.
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Lowflyer
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108 Charlie Tango 036

I wrote this up for someone else who asked the same question.

Using a maas dx5000 on (adjustable power 2.5w-12w AM/FM, fixed 20W PEP SSB) a PS30SWII 30A psu with current load meter, and a KL203 100w fm/200w ssb linear amp, and a Zetagi Mod 203W SWR / Wattmeter.

ON FM

Radio power output adjusted to 4w - psu load 4w -
Amp + Radio load 12w - Amp output - 70w

Radio power output adjusted 7w - psu load 4w -
Amp + Radio load 16w - Amp output - 90w

Radio power output adjusted to 10w - psu load 4.5w -
Amp + Radio load 19w - Amp output - 120w

ON SSB

Radio Power fixed at 20w - psu load 8w -
Amp + Radio load 24w average - 28w peak - Amp output -175-200w pep

I would suggest a 20A continious PSU to power a 100w fm/200w ssb linear, with the radio on a seperate PSU or a 30A continious to run both off the same PSU.

Naturally some radios will demand less load from the PSU than the above example, but you are better having a bit of head room left to play with.


Cheers



Edited by Lowflyer, Wednesday, 9. November 2011, 19:57.
108CT036
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Scottydog
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26 Charlie Tango 441
A 20 amp psu should power it no problem ive run my anytone and rm203 on a 20 amp supply easily.

SD
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Mudslinger
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Thanks for the help guys.

I may go for a 25-30A one as I want to run it along with My Jackson, which takes about 4.5 Amps on its own.

Simon. B)
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Cozzmik
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26 Charlie Tango 465

Mydel do a very nice switchmode 25-30a psu for around £80,so good i bought two and they have a 2 year warranty....








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Mudslinger
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cozzmik
Wednesday, 9. November 2011, 21:37
Mydel do a very nice switchmode 25-30a psu for around £80,so good i bought two and they have a 2 year warranty....
Cheers for that Mate.

I did see a Mass 25A one for sale at £60, but I cannot remember where it was. Are they any good? I remember it having two meters on it.

I might just use it to run the linear come to think of it and keep the radio on a seperate non-switchmode PSU.
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