hi,
im wondering if a 36 amp power supply (40 amp surge) is enough to run a kl-500 ? anyone know offhand? thanks
im wondering if a 36 amp power supply (40 amp surge) is enough to run a kl-500 ? anyone know offhand? thanks
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kl-500
- Thread starter ddbddg1
- Start date
No it isnt.
Expecly if its a phase 3 pymarid.They are bad about when they get strained the pop and send 24 volts into radios and amps.I only use Astrons,get a astron 50 or 75amp...I have had one for over 20 yrs.73 de n0zna
Expecly if its a phase 3 pymarid.They are bad about when they get strained the pop and send 24 volts into radios and amps.I only use Astrons,get a astron 50 or 75amp...I have had one for over 20 yrs.73 de n0zna
It appears they run 3 12 amp fuses. I would run at least a 50 amp power supply just for some headroom. The only other option would be keep the drive levels down and run it on low or med power. This would let you use it on your 36 amp supply until you can get a larger one.
KL-503
I run a KL-503 with a Mega-Watt 400 36-40 amp power supply. I believe the wattage output on both these RM Italy's are the same. On high (6) I dead key 2 watts in 250 watts out with a forward swing of 345 watts AM can't remember SSB out put right now but I think it's tickling the 500 watt mark. I have checked my wattage out put with a much bigger supply to make sure it was enough but I also do run my cooling fans and my 148GTL, meter, lights etc. on a separate supply because I'm pretty sure I am right at it's limits. My two power supplies the Ashtron and the Mega-Watt give out absolutely no unwanted hash noises either I wouldn't be able to handle the slightest interference.
I run a KL-503 with a Mega-Watt 400 36-40 amp power supply. I believe the wattage output on both these RM Italy's are the same. On high (6) I dead key 2 watts in 250 watts out with a forward swing of 345 watts AM can't remember SSB out put right now but I think it's tickling the 500 watt mark. I have checked my wattage out put with a much bigger supply to make sure it was enough but I also do run my cooling fans and my 148GTL, meter, lights etc. on a separate supply because I'm pretty sure I am right at it's limits. My two power supplies the Ashtron and the Mega-Watt give out absolutely no unwanted hash noises either I wouldn't be able to handle the slightest interference.
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I had one for years and used a PS-46KX power supply, it did work great but I never drove it 100%.
I would not go smaller.
I would not go smaller.
I just checked again to make sure my claim to 250 DK is correct. I have done so many checks on the output readings with different meters, power supplies etc. From my personal experience before I got some wild readings from voltage input being to high ( I have since bought a multi meter) to SWR's varying. This is at exactly 13.8 volts and I am using a antenna matcher that I am able with fine tunning to get a 1.1 on both the inline meter and my 148 meter. I did notice my wattage output change with higher swr's. I still don't know for sure when my voltage input was at 14.5 volts if the higher wattage readings were correct. I know that readings in the 14 volt range is very possible in a automobile set up.
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250 watts in fm mode is fine with a high volume fan directly on the heat sink, that is the 4/sd1446 model.
I use two 5x5.1/2 inch fans directly mounted to the heat sink and try to beware of our key down time also. Thay completely cover the heat sink and really make a difference.