I have found that the use of an inexpensive computer type fan on even low
power running behind the KX3 works well in allowing the full use of the
digital modes, to include WSPR at 5 watts full cycle of 112 seconds. Thank
you for all the thoughtful inputs. Running WSPR at 3 watts does not
FWIW and don't know how this would work on a KX3 but ...
When I still had my KPA100 on my K2, and was using the K2/100 in RTTY
contests, I stuck a brushless 12 VDC computer muffin fan to the top of
the heat sink, blowing down, with a little tab of velcro over the PA's.
I have a digital
Ron, the drift reports will be a better on WSPR for you if you do the KX3
extended temperature frequency calibration. Well worth doing it for modes that
depend on low frequency drift like WSPR and JT65b.
73
David Anderson GM4JJJ
On 23 Jul 2015, at 21:40, KM4VX ronce...@earthlink.net wrote:
On Thursday, July 23, 2015 03:40:22 PM KM4VX wrote:
I have found that the use of an inexpensive computer type fan on
even low
power running behind the KX3 works well in allowing the full use of the
digital modes, to include WSPR at 5 watts full cycle of 112 seconds.
Thank
you for all the
I used to have fans as one of my categories back when I was employed as
a components engineer at Hewlett Packard. One thing I remember is that
even a small amount of moving air makes a big difference in a heat
sink's thermal resistance. You don't need a huge fan.
Alan N1AL
On 07/23/2015
Hi Ron,
I've never run my KX3 on digital as it came out of the box but from the testing
I've done I think you're going to struggle with digital until you add a
third-party heatsink. I installed the VE7FMN heatsink after experiencing
overheating issues running SSB on 10m in California summer
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