KPA-1500 design
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*Well all this speculation is fine, however, if every station calling CQ
from the US added the ability to RECEIVE one additional S unit, I think this would be far less expensive than a 1500W solid state amplifier that is just going to add to the QRM already on the bands. I often hear signals from the US and they are a genuine 59 signal. However, when VK's answer the call, I hear them being told they are 51/52 and the QRM is 59...so this begs the question...how is 1500W output going to help? The KPA-500 is a genuine 500W amplifier and I have found it great to use with a 4 element yagi. Expecting to work the EU with a G5RV and 1500W is about as silly an idea as trying the KPA-500 into a 1/4 wave mobile whip. Yes there are conditions where everything works, but not often. Before anyone tries to tell me about antennas in the ceiling etc, remember I run compromised antennas all the time and I don't see how 1500W is going to help much. I think there are more than enough stations transmitting beyond the capability of their antennas and radios and I don't think I need to add to the noise. JM2CW Gary * -- Gary VK4FD - Motorhome Mobile Elecraft Equipment K3 #679, KPA-500 #018 Living the dream!!! ______________________________________________________________ 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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Amen, Gary; I have an Alpha 87A, and since I got the KPA500 it has set dormant on the shelf. The 87A is fully automatic as is the KPA500, but the KPA500 changes bands faster and has no warm up or detectable tune time. I can't count how many DX stations I missed waiting for it to do the three minute warm up. Don't get me wrong. The 87A is a great amp, but it can't match the warm up and band change speed of the KPA500. On Wed, 22 Feb 2012 19:25:22 +1000, Gary Gregory <[hidden email]> wrote: [snip] >The KPA-500 is a genuine 500W amplifier and I have found it great to use >with a 4 element yagi. Expecting to work the EU with a G5RV and 1500W is >about as silly an idea as trying the KPA-500 into a 1/4 wave mobile whip. >Yes there are conditions where everything works, but not often. > [snip] >JM2CW > >Gary >* ______________________________________________________________ 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
Amateur Radio Operator N5GE
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And now just think how great it would be if Elecraft technology were applied
to a 1500 watt brick on the key amplifier...Actually with an "instant on" tube -- would be great! How about bringing back the old vapor cooled amplifier with auto tune...Wow... 73 de Greg-N4CC -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of [hidden email] Sent: Wednesday, February 22, 2012 7:01 AM To: Gary Gregory Cc: Elecraft Subject: Re: [Elecraft] KPA-1500 design Amen, Gary; I have an Alpha 87A, and since I got the KPA500 it has set dormant on the shelf. The 87A is fully automatic as is the KPA500, but the KPA500 changes bands faster and has no warm up or detectable tune time. I can't count how many DX stations I missed waiting for it to do the three minute warm up. Don't get me wrong. The 87A is a great amp, but it can't match the warm up and band change speed of the KPA500. On Wed, 22 Feb 2012 19:25:22 +1000, Gary Gregory <[hidden email]> wrote: [snip] >The KPA-500 is a genuine 500W amplifier and I have found it great to >use with a 4 element yagi. Expecting to work the EU with a G5RV and >1500W is about as silly an idea as trying the KPA-500 into a 1/4 wave mobile whip. >Yes there are conditions where everything works, but not often. > [snip] >JM2CW > >Gary >* ______________________________________________________________ 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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Would you go for it if Elecraft just bought some Alphas with no paint and painted on the Big E and added 2 grand for the effort?
Willis 'Cookie' Cooke K5EWJ & Trustee N5BPS, USS Cavalla, USS Stewart ________________________________ From: Greg <[hidden email]> To: 'Elecraft' <[hidden email]> Sent: Wednesday, February 22, 2012 8:57 AM Subject: Re: [Elecraft] KPA-1500 design And now just think how great it would be if Elecraft technology were applied to a 1500 watt brick on the key amplifier...Actually with an "instant on" tube -- would be great! How about bringing back the old vapor cooled amplifier with auto tune...Wow... 73 de Greg-N4CC -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of [hidden email] Sent: Wednesday, February 22, 2012 7:01 AM To: Gary Gregory Cc: Elecraft Subject: Re: [Elecraft] KPA-1500 design Amen, Gary; I have an Alpha 87A, and since I got the KPA500 it has set dormant on the shelf. The 87A is fully automatic as is the KPA500, but the KPA500 changes bands faster and has no warm up or detectable tune time. I can't count how many DX stations I missed waiting for it to do the three minute warm up. Don't get me wrong. The 87A is a great amp, but it can't match the warm up and band change speed of the KPA500. On Wed, 22 Feb 2012 19:25:22 +1000, Gary Gregory <[hidden email]> wrote: [snip] >The KPA-500 is a genuine 500W amplifier and I have found it great to >use with a 4 element yagi. Expecting to work the EU with a G5RV and >1500W is about as silly an idea as trying the KPA-500 into a 1/4 wave mobile whip. >Yes there are conditions where everything works, but not often. > [snip] >JM2CW > >Gary >* ______________________________________________________________ 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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In reply to this post by Gary Gregory
It all depends upon whether you're looking for more power to compete with QRM or QRN. If you're trying to rise above the QRM and everybody does the same, there's not much net gain. At any given time, though, the QRN is fixed and as best we know isn't smart enough to try to compete with you. Dave AB7E On 2/22/2012 2:25 AM, Gary Gregory wrote: > *Well all this speculation is fine, however, if every station calling CQ > from the US added the ability to RECEIVE one additional S unit, I think > this would be far less expensive than a 1500W solid state amplifier that is > just going to add to the QRM already on the bands. > > I often hear signals from the US and they are a genuine 59 signal. However, > when VK's answer the call, I hear them being told they are 51/52 and the > QRM is 59...so this begs the question...how is 1500W output going to help? > > The KPA-500 is a genuine 500W amplifier and I have found it great to use > with a 4 element yagi. Expecting to work the EU with a G5RV and 1500W is > about as silly an idea as trying the KPA-500 into a 1/4 wave mobile whip. > Yes there are conditions where everything works, but not often. > > Before anyone tries to tell me about antennas in the ceiling etc, remember > I run compromised antennas all the time and I don't see how 1500W is going > to help much. I think there are more than enough stations transmitting > beyond the capability of their antennas and radios and I don't think I need > to add to the noise. > > JM2CW > > Gary > * 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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