Author: Bill kollenbaum via CQ-Contest <cq-contest@contesting.com>
Date: Tue, 3 Mar 2020 00:03:56 +0000 (UTC)
Looking for a backup amp for the new station. Probably going to run SO2R so auto-tune is important. I'm running a K3S and the second radio will also be a K3S. I really don't care if the amp "match
The KPA1500 offers ~1kw on 6M if thats important to you. I have no first-hand experience with either amp. 73, Chris W4WF -- Chris Plumblee 407.494.5155 _______________________________________________
Hi Bill, I've owned a KPA1500 since early July. It's NOT auto-tune like an 87A, but it can memorize multiple trained settings for each output. This makes it more or less equivalent to the 87A IF we'v
Bill, I know a little about the KPA1500 since K4BAI bought one this past summer. His worked fine until about a week ago when it started putting out 1/2 power - around 700 watts. I posted a message on
Nothing matches the speed of tuning of a solid state amp. So, I'd go with the KPA1500. 73 Ria, N2RJ _______________________________________________ CQ-Contest mailing list CQ-Contest@contesting.com h
If you want auto tuning with an amp, you cant beat the SPE amps. I have an older one, the 1K-FA and love it. Solid state autotune up to FOUR antennas with two inputs. Stan, K4SBZ "Real radio bounces
My only issue with the KPA1500 is that its very fussy about SWR: it wont put out full power at more than about 1.3:1. However, the ATU will usually get it low enough. Im told the Expert 2K will do 1.
I was warned off the OM2000A for reasons of extreme fan noise. Several guys whose views I respect have swapped them out for that reason. Instead I added a second ACOM 2000A. I have a very early one (
Super loud and super SWR sensitive doesnt sound like good characteristics for an amp. Backing off at 1.3:1 doesnt leave one much play on 80 or 160M. Ed N1UR --Original Message-- From: CQ-Contest [mai
The SWR issue isnt really a show stopper, as the ATU, once trained can generally keep the SWR low enough. In normal CW content operation, including lots of CQing, the fans are barely audible with a R
I have NOT experienced SWR sensitivity with reasonable antennas that the KPA1500's built-in tuner can't handle. I suspect someone having this problem has not RTFM, which describes how to train the tu
Bill, You might consider an OM2000A+ . This is an automatic no tune amplifier. https://www.om-power.com/products/om2000aplus I looked on the OM Power web page and I don't see that they sell OM2000A's
I have NOT experienced SWR sensitivity with reasonable antennas that the KPA1500's built-in tuner can't handle. I suspect someone having this problem has not RTFM, which describes how to train the tu
Jeff, Two reasons for an amp capable of more than 400W: Unusually, UK licencing regs allow 400W *at the antenna feedpoint*. Cable runs on 10m and 6m here are 420ft; measured cable loss is 1.8dB at 28
I agree with Jim's comment. My KPA 1500 does not fold back until I reach close to 3 to 1. I rarely use the tuner and my CC 2L 40 will cover the whole band without using a tuner. I would imagine that
Perhaps theres something wrong with my KPA1500. (Yes, I did RTFM.) At any SWR above 1.5:1, according to the meter on the amp, it will usually fault due to either high current or excessive drive power
I run 20 watts all the time in to my KPA 1500. The SWR is 1.1:1 most of the time. With the turner, sometimes it is 1.3:1. My out put is 800 -1000 W all the time depending on band and antenna. 73, Eve
I had access to a KPA1500 for one day during ARRL DX CW 2018. I found that 1500 watts into 1.5 SWR always produced a hard fault. SWR had to be 1.4 or less on every tuner segment. The tuner had to be
There is a raft of interrelated parameters that can be set in the KPA-1500 firmware on a per-band basis, relating to the allowable SWR. The KPA-1500 manual is of limited help on these, and much more
Those are two completely different animals, one is lightweight and has LDMOS finals that need an antenna tuner or a perfect antena and the other uses a ceramic tetrode that can tolerate 3:1 SWR. A te