Based on my experience with the KPA1500, you shouldn't expect to run a
solid state amplifier too close to it's rated output unless the SWR is
pretty low, like better than 1.2:1. An ATU may or may not be able to
keep the SWR that low. Otherwise, at a higher SWR, the amplifier output
will sometimes drop to perhaps 2/3 the rated output, or the amplifier
will fault due to high current or drive power. I expect the Expert 2K
would have enough margin to put out 1.5 kW at higher SWR, but that extra
margin comes at a cost.
73,
Scott K9MA
On 2/12/2019 15:44, Dave wrote:
Has anyone had experience with both the KPA1500 and any of the current (1.3K,
1.5K or 2K) Expert Linears from SPE? I was initially leaning towards the
1.3K-FA without the ATU. The more I thought about it, the more I wanted to go
with an ATU. The price difference to get less than 1db in going from 1300 watts
to 1500 was also a bit of a concern. However, I’ve never pushed my 3x8874s to
more than 1200 and only on the low bands. I have a KPA500 with the KAT500 and
it’s great. However, in a 160 pileup a bit more power would help. Changing
bands quickly is awesome. That has me leaning towards the KPA1500. If anyone
would like to share their thoughts, it would be greatly appreciated.
Also, I’m wondering if anyone has run their KPA500 and a KPA1500 off of the
same K3? If so, how did you set it up?
Tnx es 73,
Dave N8AG
Sent from Mail for Windows 10
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
--
Scott K9MA
[email protected]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
