| Bill thanks for the link. I see 'Elecraft K4' highly emphasized in font 
size, reflects 
perhaps your waiting time ?  What do you think, does the K4 meet 
expectation's ? 
The amp probably uses a better quality quiet fans like Noctua etc ?
Does it have PC control to allow remote use ?
73
Adrian Fewster
On 14/7/21 10:28 pm, Bill Steffey NY9H wrote:
 been following this thread for a while...  still waiting to see a 
comparison of KPA VS  RF-KIT .
I do know MY RFkit is sitting directly in front of me in my 
console...and makes some noise at FT8 800-1000 watts,, some , not even 
a lot. On SSB I don't even hear the fans. The Huawai 3KW PS is 96% 
efficient to start... The pallet has a VERY different heat sink 
arrangement. 
bill ny9h/3                               console pix at qrz,com    
https://www.qrz.com/lookup/ny9h 
On 7/13/2021 10:04 PM, john@kk9a.com wrote:
 
And what is the KPA1500 fan noise level at 90°C?
John KK9A
VE7RF wrote:
<When I'm contesting on HF, always at 1.5kW, I've seen temps at 90 C, 
the 
<fans run faster, I'm happy, and the amp is happy.
<73, Jim K9YC
##  90 deg C ?   wtf?
  90 deg C = 194 deg F !
##  Are u sure abt this ?   That's stupid for a LDMOS device. What is
the ambient temp in the shack when this is  going on ?
Jim   VE7RF
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