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Total 33 documents matching your query.

21. Re: [Amps] KPA1500 Efficiency vs. RF-Kit B26 (score: 1)
Author: Adrian <vk4tux@gmail.com>
Date: Mon, 12 Jul 2021 12:22:32 +1000
Bob, what are the TX IMD3 specs on the KPA1500 if you know please? The SPE uses a switchmode PSU, so voltage switching is simpler to provide A current draw higher in lower power ( current value 25 -3
/archives//html/Amps/2021-07/msg00042.html (10,796 bytes)

22. Re: [Amps] KPA1500 Efficiency vs. RF-Kit B26 (score: 1)
Author: Adrian <vk4tux@gmail.com>
Date: Mon, 12 Jul 2021 14:25:02 +1000
Thanks Bob, The PSU seems perhaps heavier then than the inbult SPE unit then. The SPE total weight is 24 lbs. I would think the better IMD3 performance would be at the higher voltage in the SPE, at t
/archives//html/Amps/2021-07/msg00044.html (9,063 bytes)

23. Re: [Amps] KPA1500 Efficiency vs. RF-Kit B26 (score: 1)
Author: Adrian <vk4tux@gmail.com>
Date: Mon, 12 Jul 2021 21:05:09 +1000
Jim, Sorry see now you have stated "using my K3/P3 with the added SVGA output" that answers below,, that you used that on both amps. regards Adrian Fewster Jim, when you did the IMD3 comparison betwe
/archives//html/Amps/2021-07/msg00047.html (8,426 bytes)

24. Re: [Amps] KPA1500 Efficiency vs. RF-Kit B26 (score: 1)
Author: Adrian <vk4tux@gmail.com>
Date: Wed, 14 Jul 2021 10:56:21 +1000
The problem also with that is the temperature at the LDMOS source material (mount flange) is usually much hotter than where the sensor is located. In the SPE anyway, on which I have measured (infra r
/archives//html/Amps/2021-07/msg00054.html (8,766 bytes)

25. Re: [Amps] KPA1500 Efficiency vs. RF-Kit B26 (score: 1)
Author: Adrian <vk4tux@gmail.com>
Date: Wed, 14 Jul 2021 14:26:19 +1000
Watercooled. This is a great watch ; https://www.youtube.com/watch?v=2d_rkfj05mI LOUD! Jim _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contestin
/archives//html/Amps/2021-07/msg00060.html (8,835 bytes)

26. Re: [Amps] KPA1500 Efficiency vs. RF-Kit B26 (score: 1)
Author: Adrian <vk4tux@gmail.com>
Date: Wed, 14 Jul 2021 23:05:46 +1000
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
/archives//html/Amps/2021-07/msg00064.html (11,010 bytes)

27. Re: [Amps] Need Smarter Than I Am Help. (score: 1)
Author: Adrian <vk4tux@gmail.com>
Date: Mon, 11 Oct 2021 19:56:14 +1000
i see sense in your comments here Rob, but am curious on why the IMD spec would be worse ? Apart from correct biasing and build quality, I was always under the impression that more voltage and less c
/archives//html/Amps/2021-10/msg00026.html (8,513 bytes)

28. Re: [Amps] LK800C Help (score: 1)
Author: Adrian <vk4tux@gmail.com>
Date: Tue, 7 Dec 2021 10:13:08 +1000
Is this useful ? https://www.opweb.de/english/company/Amp_Supply/downloads/Amp_Supply--LK800--service_and_user--ID4282.pdf vk4tux On 7/12/21 09:51, Tom Hellem wrote: Amp Supply LK800C _______________
/archives//html/Amps/2021-12/msg00055.html (7,333 bytes)

29. Re: [Amps] What to do about 'Neutral' in HB amp? (score: 1)
Author: Adrian <vk4tux@gmail.com>
Date: Thu, 29 Dec 2022 12:00:17 +1000
It is interesting to see the various opinions on Neutral and electrical safety. In Australia we have world best regulation on Electrical standards and I am an A class licenced Electrician. Here we ha
/archives//html/Amps/2022-12/msg00143.html (11,986 bytes)

30. Re: [Amps] Amps Digest, Vol 240, Issue 45 (score: 1)
Author: Adrian <vk4tux@gmail.com>
Date: Sat, 31 Dec 2022 08:15:50 +1000
Jim, regarding below, I was referring to the opinions seen in this thread by list members regarding appliance connections, and not opinions by Electrical standard regulators. Misguided opinions are a
/archives//html/Amps/2022-12/msg00170.html (7,798 bytes)

31. [Amps] Eimac YU-100 (score: 1)
Author: Adrian <vk4tux@gmail.com>
Date: Fri, 7 Apr 2023 16:09:25 +1000
Has anyone tried the Eimac YU-100 replacing the 3-500z ? Thankyou vk4tux _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/list
/archives//html/Amps/2023-04/msg00016.html (6,277 bytes)

32. [Amps] Palstar AT1500CV (score: 1)
Author: Adrian <vk4tux@gmail.com>
Date: Sat, 8 Apr 2023 08:31:24 +1000
Is the power meter on the AT1500CV PEP or AVG reading ? Can't find anything in the manual or online, I feel it is avg ? Thankyou 73 vk4tux _______________________________________________ Amps mailing
/archives//html/Amps/2023-04/msg00018.html (6,341 bytes)

33. Re: [Amps] Starting up a NEW Henry amp (score: 1)
Author: Adrian <vk4tux@gmail.com>
Date: Thu, 14 Dec 2023 15:08:42 +1000
Alek, Did you try increasing Q of the input to ~c 2 to produce a better flywheel effect, which becomes a more stable input impedance  through a wider drive level range ? More capacitance, less induct
/archives//html/Amps/2023-12/msg00031.html (8,669 bytes)

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