New Elecraft Amp(s) - with bare K2?
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Will the soon-to-be-sold new Amplifier(s) coming out
by Elecraft - be able to be fully driven by a bare bones basic K2? As always a fan of separate units; xcvr, amp, tuner, swr/power metering. I'm trying to end up with a CW/SSB decent wattage K2. I can't get myself to go the top-cover amplifier KPA100 route. IMHO - not the way to go for me. I guess what I'm driving at (!) - is what is the min. drive power required of these new amplifiers? Fred, N3CSY ____________________________________________________________________________________ Do you Yahoo!? Everyone is raving about the all-new Yahoo! Mail beta. http://new.mail.yahoo.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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Fred, you're gonna need the KPA100 to drive the Elecraft amplifier(s).
de Joe, aa4nn ----- Original Message ----- From: "Fred (FL)" <[hidden email]> To: <[hidden email]> Sent: Tuesday, February 27, 2007 5:40 PM Subject: [Elecraft] New Elecraft Amp(s) - with bare K2? > Will the soon-to-be-sold new Amplifier(s) coming out > by Elecraft - be able to be fully driven by a bare > bones basic K2? As always a fan of separate units; > xcvr, amp, tuner, swr/power metering. I'm trying to > end up with a CW/SSB decent wattage K2. I can't get > myself to go the top-cover amplifier KPA100 route. > IMHO - not the way to go for me. I guess what I'm > driving at (!) - is what is the min. drive power > required of these new amplifiers? > > Fred, N3CSY > > > > ____________________________________________________________________________________ > Do you Yahoo!? > Everyone is raving about the all-new Yahoo! Mail beta. > http://new.mail.yahoo.com > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
RE: New Elecraft Amp(s) - with bare K2?
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In reply to this post by Fred (FL)
For full output, you'll need 100 watts from the K2. It'll surely provide
reduced output with reduced drive, but I don't know how much you'll get with 10 watts drive. I don't understand your concern about the K2/100. The K2 was *designed* as a QRO rig! It just happened that Wayne/Eric released the 10 watt version of the K2 first. A primary reason I chose the K2 back in 1999 was that the amp was part of the design. Several ops who wanted to retain the low-power, internal battery and ATU options for the 10 watt version of the K2 have developed a way to mount the KPA100 in a separate E2 enclosure. Legally Elecraft couldn't provide the instructions to do that, but if you ask here you'll get a number of references to the instructions. That seems a very popular way to retain the low-power K2 and have QRO when you want it from the home station. I don't have any experience with the KPA100 mounted externally. I've always operated my K2/100 as an integrated rig just as it was intended. Ron AC7AC -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Fred (FL) Sent: Tuesday, February 27, 2007 2:41 PM To: [hidden email] Subject: [Elecraft] New Elecraft Amp(s) - with bare K2? Will the soon-to-be-sold new Amplifier(s) coming out by Elecraft - be able to be fully driven by a bare bones basic K2? As always a fan of separate units; xcvr, amp, tuner, swr/power metering. I'm trying to end up with a CW/SSB decent wattage K2. I can't get myself to go the top-cover amplifier KPA100 route. IMHO - not the way to go for me. I guess what I'm driving at (!) - is what is the min. drive power required of these new amplifiers? Fred, N3CSY ____________________________________________________________________________ ________ Do you Yahoo!? Everyone is raving about the all-new Yahoo! Mail beta. http://new.mail.yahoo.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Fred (FL)
What new amplifiers??? You mean that empty box that Elecraft has
been toting around the hamfests for the last year? I don't think there is really an amplifier in there. I think they have just been shining us on. If there were REALLY a KPA-800 & 1500, we would be using them right now. :-) Stan Rife W5EWA Houston, TX K2 S/N 4216 -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Fred (FL) Sent: Tuesday, February 27, 2007 4:41 PM To: [hidden email] Subject: [Elecraft] New Elecraft Amp(s) - with bare K2? Will the soon-to-be-sold new Amplifier(s) coming out by Elecraft - be able to be fully driven by a bare bones basic K2? As always a fan of separate units; xcvr, amp, tuner, swr/power metering. I'm trying to end up with a CW/SSB decent wattage K2. I can't get myself to go the top-cover amplifier KPA100 route. IMHO - not the way to go for me. I guess what I'm driving at (!) - is what is the min. drive power required of these new amplifiers? Fred, N3CSY ____________________________________________________________________________ ________ Do you Yahoo!? Everyone is raving about the all-new Yahoo! Mail beta. http://new.mail.yahoo.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
RE: New Elecraft Amp(s) - with bare K2?
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In reply to this post by Ron D'Eau Claire-2
I need to correct the statement below. I should have said, "For full output,
you'll need more than the 10 watts the low power version of the K2 provides." As I went on to say, I don't know how much you'll get with only 10 watts of power. Ron AC7AC -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Ron D'Eau Claire Sent: Tuesday, February 27, 2007 3:56 PM To: [hidden email] Subject: RE: [Elecraft] New Elecraft Amp(s) - with bare K2? For full output, you'll need 100 watts from the K2. It'll surely provide reduced output with reduced drive, but I don't know how much you'll get with 10 watts drive. I don't understand your concern about the K2/100. The K2 was *designed* as a QRO rig! It just happened that Wayne/Eric released the 10 watt version of the K2 first. A primary reason I chose the K2 back in 1999 was that the amp was part of the design. Several ops who wanted to retain the low-power, internal battery and ATU options for the 10 watt version of the K2 have developed a way to mount the KPA100 in a separate E2 enclosure. Legally Elecraft couldn't provide the instructions to do that, but if you ask here you'll get a number of references to the instructions. That seems a very popular way to retain the low-power K2 and have QRO when you want it from the home station. I don't have any experience with the KPA100 mounted externally. I've always operated my K2/100 as an integrated rig just as it was intended. Ron AC7AC -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Fred (FL) Sent: Tuesday, February 27, 2007 2:41 PM To: [hidden email] Subject: [Elecraft] New Elecraft Amp(s) - with bare K2? Will the soon-to-be-sold new Amplifier(s) coming out by Elecraft - be able to be fully driven by a bare bones basic K2? As always a fan of separate units; xcvr, amp, tuner, swr/power metering. I'm trying to end up with a CW/SSB decent wattage K2. I can't get myself to go the top-cover amplifier KPA100 route. IMHO - not the way to go for me. I guess what I'm driving at (!) - is what is the min. drive power required of these new amplifiers? Fred, N3CSY ____________________________________________________________________________ ________ Do you Yahoo!? Everyone is raving about the all-new Yahoo! Mail beta. http://new.mail.yahoo.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Fred (FL)
Hi Fred,
I fully appreciate the quality of Elecraft products. However, they still need to have a marketable amplifier. In other words, to cover their R&D, they should aim at selling the amplifier not only to the K2 users. My barefoot K2 can drive both my ICPW-1 and Quadra System to 350-400 watts. Therefore, the forthcoming KPA800 / 1500 should have similar amplification gain. If the proposed KPA800 / 1500 can only work with K2/100 and with less gain, I regret to say that the marketability of the amplifiers will be adversely affected. ICPW-1 and Quadra System are selling about US$4000 in VR2. I would expect KPA800 /1500 selling at similar price. For the price range, if the KPA800 / 1600 only can work with K2/100 and less amplification gain, it is really not a market taker. 73 Johnny Siu VR2XMC From: "Fred (FL)" <[hidden email]> To: [hidden email] Subject: [Elecraft] New Elecraft Amp(s) - with bare K2? Date: Tue, 27 Feb 2007 14:40:52 -0800 (PST) Will the soon-to-be-sold new Amplifier(s) coming out by Elecraft - be able to be fully driven by a bare bones basic K2? As always a fan of separate units; xcvr, amp, tuner, swr/power metering. I'm trying to end up with a CW/SSB decent wattage K2. I can't get myself to go the top-cover amplifier KPA100 route. IMHO - not the way to go for me. I guess what I'm driving at (!) - is what is the min. drive power required of these new amplifiers? Fred, N3CSY _________________________________________________________________ MSN Tool Bar 幫你刪除惱人的廣告 ! http://toolbar.msn.com.hk _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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The amplification of the PA is limited by the low only in the USA. Hope
that there will be an overseas edition, who can be made happy by barefoot K2. 73 Val LZ1VB > Hi Fred, > > I fully appreciate the quality of Elecraft products. However, they still > need to have a marketable amplifier. In other words, to cover their R&D, > they should aim at selling the amplifier not only to the K2 users. > > My barefoot K2 can drive both my ICPW-1 and Quadra System to 350-400 watts. > Therefore, the forthcoming KPA800 / 1500 should have similar amplification > gain. If the proposed KPA800 / 1500 can only work with K2/100 and with > less gain, I regret to say that the marketability of the amplifiers will be > adversely affected. > > ICPW-1 and Quadra System are selling about US$4000 in VR2. I would expect > KPA800 /1500 selling at similar price. For the price range, if the KPA800 > / 1600 only can work with K2/100 and less amplification gain, it is really > not a market taker. > > 73 > > Johnny Siu VR2XMC > > > > > From: "Fred (FL)" <[hidden email]> > To: [hidden email] > Subject: [Elecraft] New Elecraft Amp(s) - with bare K2? > Date: Tue, 27 Feb 2007 14:40:52 -0800 (PST) > > Will the soon-to-be-sold new Amplifier(s) coming out > by Elecraft - be able to be fully driven by a bare > bones basic K2? As always a fan of separate units; > xcvr, amp, tuner, swr/power metering. I'm trying to > end up with a CW/SSB decent wattage K2. I can't get > myself to go the top-cover amplifier KPA100 route. > IMHO - not the way to go for me. I guess what I'm > driving at (!) - is what is the min. drive power > required of these new amplifiers? > > Fred, N3CSY > > _________________________________________________________________ > MSN Tool Bar 幫你刪除惱人的廣告 ! http://toolbar.msn.com.hk > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by johnny-52
So you put 10 watts in and get ~400 watts out!
You put in 50 watts and get 2000 watts out Where's the rub? de Joe, aa4nn ------------------------------------------------------ ----- SNIP ----- > My barefoot K2 can drive both my ICPW-1 and Quadra System to 350-400 > watts. Therefore, the forthcoming KPA800 / 1500 should have similar > amplification gain. If the proposed KPA800 / 1500 can only work with > K2/100 and with less gain, I regret to say that the marketability of the > amplifiers will be adversely affected. > _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
Re: New Elecraft Amp(s) - with bare K2?
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In reply to this post by Fred (FL)
A power gain of x40 is very high for a mass produced RF ham amplifier (about 17db). I believe an FCC rule limits it to 15 or 16db for US marketability, due to CB issues in part.
Many non-US amateur amp developers work around this by using power swamping resistors in the input circuits, of the US market amps they make, to comply with the FCC requirements. Just take a look at what the Italian amp maker Expert has had to do with its new solid state 1Kamp, just to get it approved by the FCC (60 watts inputfor the US version, 20 watts for the rest). The limiting factor is the need for neutrlisation in a high gain RF amp. Something to stay well away from, and at 17db you're pushing the envelope quite close. Just take a look at the 'export' versions of the QRO and Command amps - x35 power gain - and that's just for the overseas market. A higher gain amp can be built and made to work without neutralisation, but may be difficult to reproduce for mass use. Happiness is around 13db or x20 in my view. 73, Wyn VR2AX So you put 10 watts in and get ~400 watts out! You put in 50 watts and get 2000 watts out Where's the rub? de Joe, aa4nn ------------------------------------------------------ ----- SNIP ----- My barefoot K2 can drive both my ICPW-1 and Quadra System to 350-400 watts. Therefore, the forthcoming KPA800 / 1500 should have similar amplification gain. If the proposed KPA800 / 1500 can only work with K2/100 and with less gain, I regret to say that the marketability of the amplifiers will be adversely affected. _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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