KPA500 & K3 - 30 meters
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I had a KPA500 a year ago and in a moment of stupidity, sold it. Now considering a replacement. Got a question about it's operation that I can't for the life of me recall from my previous ownership.
Let's say that I want to use the amp on all the HF bands except for 30 meters. Does the KPA500 have a per-band memory for the "operate / standby" function? Scenario: If I put the K3/KPA500 on 30 meters and place the amp in bypass, then drop down to 40 meters and go to "operate" mode, and then later on go back to 30 meters - will the KPA500 "remember" that I want it in bypass mode, or do I have to do it manually? Looked in the downloadable KPA500 manual, but saw no reference to this. Thanks in advance, Jim / W6JHB ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Well, I just did a test with my K3/KPA500 and it appears that Operate/Standby is NOT band dependent. I did this test. K3 was tuned to 80 meters and KPA500 in Standby mode. I switched to 20 meters and manually placed KPA500 in Operate mode. I then switched back to 80 meters but the KPA500 remained in Operate mode, it did not revert to Standby.
73, phil, K7PEH On Oct 15, 2013, at 8:08 PM, Jim Bennett <[hidden email]> wrote: > I had a KPA500 a year ago and in a moment of stupidity, sold it. Now considering a replacement. Got a question about it's operation that I can't for the life of me recall from my previous ownership. > > Let's say that I want to use the amp on all the HF bands except for 30 meters. Does the KPA500 have a per-band memory for the "operate / standby" function? Scenario: If I put the K3/KPA500 on 30 meters and place the amp in bypass, then drop down to 40 meters and go to "operate" mode, and then later on go back to 30 meters - will the KPA500 "remember" that I want it in bypass mode, or do I have to do it manually? Looked in the downloadable KPA500 manual, but saw no reference to this. > > Thanks in advance, Jim / W6JHB > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by Jim Bennett
Jim -
I do not yet have a KPA500, but did recently set one up for a friend. Although the standby/operate function is not remembered on a per band basis, I am not sure why that might be an issue. If your concern is that you do not want to inadvertently run 500 watts on 30 meters, the per band drive level is the perfect solution. I set my friend's up so if he is on 40 meters, the drive level of the K3 gives 500 watts out, and when he switched to 30 meters the drive level drops sufficiently that the KPA500 only puts out 200 watts. Switching to standby on any band puts the K3 back to 100 watts. If your reason is other than the above, I don't know what you need. Very 73 de Dave - K9FN Jim Bennett <[hidden email]> wrote: I had a KPA500 a year ago and in a moment of stupidity, sold it. Now considering a replacement. Got a question about it's operation that I can't for the life of me recall from my previous ownership. Let's say that I want to use the amp on all the HF bands except for 30 meters. Does the KPA500 have a per-band memory for the "operate / standby" function? Scenario: If I put the K3/KPA500 on 30 meters and place the amp in bypass, then drop down to 40 meters and go to "operate" mode, and then later on go back to 30 meters - will the KPA500 "remember" that I want it in bypass mode, or do I have to do it manually? Looked in the downloadable KPA500 manual, but saw no reference to this. Thanks in advance, Jim / W6JHB ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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The other thing you can do if you have the KPAK3AUX cable installed is to use the INHIBIT function (if you are not using DIGOUT1 to control a PR6 preamp). In the KPA menu, set INHIBIT to ENABLE, then in the K3 config menu set DIGOUT1 ON when you are on 30 meters. The problem with this solution is that if you are using DIGOUT1 ON to turn on the PR6 preamp it will inhibit the amp on 6 meters too.
Dave's solution below is the better way to go. Cheers, Fred KE7X -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of David Bunte Sent: Wednesday, October 16, 2013 12:48 AM To: Jim Bennett Cc: Elecraft Reflector Reflector Subject: Re: [Elecraft] KPA500 & K3 - 30 meters Jim - I do not yet have a KPA500, but did recently set one up for a friend. Although the standby/operate function is not remembered on a per band basis, I am not sure why that might be an issue. If your concern is that you do not want to inadvertently run 500 watts on 30 meters, the per band drive level is the perfect solution. I set my friend's up so if he is on 40 meters, the drive level of the K3 gives 500 watts out, and when he switched to 30 meters the drive level drops sufficiently that the KPA500 only puts out 200 watts. Switching to standby on any band puts the K3 back to 100 watts. If your reason is other than the above, I don't know what you need. Very 73 de Dave - K9FN Jim Bennett <[hidden email]> wrote: I had a KPA500 a year ago and in a moment of stupidity, sold it. Now considering a replacement. Got a question about it's operation that I can't for the life of me recall from my previous ownership. Let's say that I want to use the amp on all the HF bands except for 30 meters. Does the KPA500 have a per-band memory for the "operate / standby" function? Scenario: If I put the K3/KPA500 on 30 meters and place the amp in bypass, then drop down to 40 meters and go to "operate" mode, and then later on go back to 30 meters - will the KPA500 "remember" that I want it in bypass mode, or do I have to do it manually? Looked in the downloadable KPA500 manual, but saw no reference to this. Thanks in advance, Jim / W6JHB ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Guys - thanks for all the helpful info. I had completely forgotten that the K3 can, when used in conjunction with the KPA500, use two RF output settings per band: one with the amp on and another with it off. Dave was right on - set it to 100 watts (or whatever) with the amp off, and with the amp on, set it to something less than 201 watts. Perfect!
73, Jim / W6JHB On Wednesday, Oct 16, 2013, at Wednesday, 7:28 AM, Cady, Fred wrote: > The other thing you can do if you have the KPAK3AUX cable installed is to use the INHIBIT function (if you are not using DIGOUT1 to control a PR6 preamp). In the KPA menu, set INHIBIT to ENABLE, then in the K3 config menu set DIGOUT1 ON when you are on 30 meters. The problem with this solution is that if you are using DIGOUT1 ON to turn on the PR6 preamp it will inhibit the amp on 6 meters too. > Dave's solution below is the better way to go. > Cheers, > Fred > KE7X > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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