Re: [Elecraft] KPA500 Serial interface question
"Serial IO board K1 is controlled by "SBYB" which traces to signal "BYPRLY". The names suggest "bypass relay" but under what circumstances is this signal set/cleared? In other words, when does K1 open the data out line?" Well I found the answer thanks to another KPA500 owner running a similar test. It turns out that setting SER POLL to OFF and remaining in the Menu stops polling but leaves the relay closed with -12 V on pin 3. Only when the menu is exited does the relay get deactivated and pin 3 goes open circuit. Similarly, opening the menu and setting SER POLL from Off to On leaves the relay open and the relay only closes when the menu is exited. I wonder how many KPA500 owners have been caught by this. 73, Andy k3wyc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KPA500 Serial interface question
I started down this path because I'm trying to help a Scottish op who seems to have a failed KPA500 XCVR port. (Scope shows no indication of polling when Ser Poll is on.) KPA500 has an IO board with two serial interfaces. One is for connection to a PC and the other for connection to a transceiver. The data out line of the XCVR port passes through relay K1 and I assumed this relay would be open when SER POLL is set to OFF. My scope measurements show this line is actually pulled low when SER POLL is Off which implies that K1 is not open. With Ser Poll On I see normal polling with IF;FA;FB; My interface works ok although I'm currently using the PC port not the XCVR for KPA500 control. I suspect that Jack is the only one who will know the details but I'm asking here so others can learn if interested. My question is: Serial IO board K1 is controlled by "SBYB" which traces to signal "BYPRLY". The names suggest "bypass relay" but under what circumstances is this signal set/cleared? In other words, when does K1 open the data out line? Thanks and 73, Andy, k3wyc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA500 no transmit question...
Thank you for the answer... I'll ask him tomorrow... More as I get it... Once I find out I'll also post. 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Awards ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 3/7/19 7:28 PM, Jack Brindle wrote: This sounds like there is no RF going into the KPA500. When the KPA500 is in STBY mode and he transmits, do the KPA500 indicators show the proper power level to match what he thinks the K3 is outputting? He might insert a wattmeter between the K3 and KPA500 to make sure that power is going into the KPA when he thinks it is. If not, then it is time to diagnose things in the K3. The folks down in Watsonville are very good at diagnosing system problems of this sort. Calling them to help solve the issue would be a good thing. 73! Jack, W6FB On Mar 7, 2019, at 5:50 PM, Dave Cole (NK7Z) wrote: I am writing this for a friend, who for now, has limited access to he list. He has a KPA500/KAT500/K3. All was working fine last time he used it. Today, the amp comes on, but no power. Here are the details... 1. Amp shows the "*" when it keys. 2. K3 shows KPA500 ON, when the amp comes on. 3. K3 shows KPA500 OPERATE when it is switched to operate. 4. The K3 reduces power when the KPA500 is in operate mode. 5. No fault is indicated. I loomed at TX INHIB, on the K3, and it is OFF as it should be. All cables are tight... I just got my KPA500 last week, so my experience is limited. What am I missing? He will call Elecraft tomorrow, but I want to know if it is a setting issue, or something broke. -- 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Awards ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 no transmit question...
This sounds like there is no RF going into the KPA500. When the KPA500 is in STBY mode and he transmits, do the KPA500 indicators show the proper power level to match what he thinks the K3 is outputting? He might insert a wattmeter between the K3 and KPA500 to make sure that power is going into the KPA when he thinks it is. If not, then it is time to diagnose things in the K3. The folks down in Watsonville are very good at diagnosing system problems of this sort. Calling them to help solve the issue would be a good thing. 73! Jack, W6FB > On Mar 7, 2019, at 5:50 PM, Dave Cole (NK7Z) wrote: > > I am writing this for a friend, who for now, has limited access to he list. > > He has a KPA500/KAT500/K3. All was working fine last time he used it. Today, > the amp comes on, but no power. Here are the details... > > 1. Amp shows the "*" when it keys. > 2. K3 shows KPA500 ON, when the amp comes on. > 3. K3 shows KPA500 OPERATE when it is switched to operate. > 4. The K3 reduces power when the KPA500 is in operate mode. > 5. No fault is indicated. > > I loomed at TX INHIB, on the K3, and it is OFF as it should be. > > All cables are tight... > > I just got my KPA500 last week, so my experience is limited. What am I > missing? He will call Elecraft tomorrow, but I want to know if it is a > setting issue, or something broke. > > -- > 73s and thanks, > Dave (NK7Z) > https://www.nk7z.net > Award Manager, 30MDG Grid Awards > ARRL Technical Specialist > ARRL Volunteer Examiner > ARRL OOC for Oregon > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KPA500 no transmit question...
I am writing this for a friend, who for now, has limited access to he list. He has a KPA500/KAT500/K3. All was working fine last time he used it. Today, the amp comes on, but no power. Here are the details... 1. Amp shows the "*" when it keys. 2. K3 shows KPA500 ON, when the amp comes on. 3. K3 shows KPA500 OPERATE when it is switched to operate. 4. The K3 reduces power when the KPA500 is in operate mode. 5. No fault is indicated. I loomed at TX INHIB, on the K3, and it is OFF as it should be. All cables are tight... I just got my KPA500 last week, so my experience is limited. What am I missing? He will call Elecraft tomorrow, but I want to know if it is a setting issue, or something broke. -- 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Awards ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KPA500 / KAT500 Cable Question
Just want to be sure nothing has changed from what I found in the archives - I am looking at purchasing a KPA500 and KAT500 in the next few weeks and want to be sure that, if I opt to use my own SVGA cables (actually from CableWholesale.com) that I need to remove pins 1, 6, 7, and 8. Yes? p.s. - sorry if this is a duplicate - I tried to post it yesterday, but it seems to have gone into the ether... Jim / W6JHB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KPA500 - power out question
I am considering replacing my 3-500 amplifier (puts out approximately 850 Watts) with the KPA500. My question: What have users been experiencing as output power in the real world? Specifications make great reading, but I am interested in what is real. Thanks, Bill W2BLC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 - power out question
Thanks to all who answered. I didn't know there was such a perceived difference, at the receiving end, between 500 Watts and 850 Watts. I have always been under the impression that doubling of power (3 db gain) was the least discernible difference and that if you did not, at a minimum, double your power - there was really little to be gained. Also, I am amazed at the reported differences in power - from 350 Watts to 600 Watts. That is a rather large disparity. Thanks, Bill W2BLC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 - power out question
Bill, Would you be willing to share the data you gathered with the rest of the group? I just (as of late last night) replaced my AL-811H with a KPA500. My tests showed output of 530-550 watts with 35 watts drive from my K3. I'm very pleased with that result. Thanks and 73, -- Ian Ian Kahn, KM4IK Roswell, GA EM74ua km4ik@gmail.com K3 #281, P3 #688 HRD v5.x/6.0 Test Team -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill Sent: Sunday, May 12, 2013 9:05 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 - power out question Thanks to all who answered. I didn't know there was such a perceived difference, at the receiving end, between 500 Watts and 850 Watts. I have always been under the impression that doubling of power (3 db gain) was the least discernible difference and that if you did not, at a minimum, double your power - there was really little to be gained. Also, I am amazed at the reported differences in power - from 350 Watts to 600 Watts. That is a rather large disparity. Thanks, Bill W2BLC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 - power out question
My KPA500 puts out 600-650 watts with 35 watts drive on all bands. I'm not sure exactly what's going on with people getting 350 watts out. I'd guess those reporting 350 watts are running high duty cycle modes, like RTTY or AM. People listening to your signal will likely notice very little difference going 850 watts to 600 watts output. However, the KPA500 adds 6 meters, QSK and auto bandswitching, which for me was worth more than the 3dB I was losing going from 1300 watts to 650. 73, Scott, N9AA On 5/12/13 9:05 AM, Bill wrote: Thanks to all who answered. I didn't know there was such a perceived difference, at the receiving end, between 500 Watts and 850 Watts. I have always been under the impression that doubling of power (3 db gain) was the least discernible difference and that if you did not, at a minimum, double your power - there was really little to be gained. Also, I am amazed at the reported differences in power - from 350 Watts to 600 Watts. That is a rather large disparity. Thanks, Bill W2BLC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 - power out question
I still see people reading the SSB signal as low power on the meter and believing it is PEP. Depends on who is reading the meter and the peak/average setting as well. 73, Jim KG0KP -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Scott Manthe Sent: Sunday, May 12, 2013 12:29 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA500 - power out question My KPA500 puts out 600-650 watts with 35 watts drive on all bands. I'm not sure exactly what's going on with people getting 350 watts out. I'd guess those reporting 350 watts are running high duty cycle modes, like RTTY or AM. People listening to your signal will likely notice very little difference going 850 watts to 600 watts output. However, the KPA500 adds 6 meters, QSK and auto bandswitching, which for me was worth more than the 3dB I was losing going from 1300 watts to 650. 73, Scott, N9AA On 5/12/13 9:05 AM, Bill wrote: Thanks to all who answered. I didn't know there was such a perceived difference, at the receiving end, between 500 Watts and 850 Watts. I have always been under the impression that doubling of power (3 db gain) was the least discernible difference and that if you did not, at a minimum, double your power - there was really little to be gained. Also, I am amazed at the reported differences in power - from 350 Watts to 600 Watts. That is a rather large disparity. Thanks, Bill W2BLC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 - power out question
My KPA500 loafs at 400W with about 30W of drive (UK legal limit), driven to max power it's about 650W with 35W. I think the disparity between results may be down to the type of load being driven. Best regards, Tim Hague, M0AFJ Skype m0afj.Tim Sent on my iPad On 12 May 2013, at 18:29, Scott Manthe scott.man...@gmail.com wrote: My KPA500 puts out 600-650 watts with 35 watts drive on all bands. I'm not sure exactly what's going on with people getting 350 watts out. I'd guess those reporting 350 watts are running high duty cycle modes, like RTTY or AM. People listening to your signal will likely notice very little difference going 850 watts to 600 watts output. However, the KPA500 adds 6 meters, QSK and auto bandswitching, which for me was worth more than the 3dB I was losing going from 1300 watts to 650. 73, Scott, N9AA On 5/12/13 9:05 AM, Bill wrote: Thanks to all who answered. I didn't know there was such a perceived difference, at the receiving end, between 500 Watts and 850 Watts. I have always been under the impression that doubling of power (3 db gain) was the least discernible difference and that if you did not, at a minimum, double your power - there was really little to be gained. Also, I am amazed at the reported differences in power - from 350 Watts to 600 Watts. That is a rather large disparity. Thanks, Bill W2BLC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 - power out question
I received many direct emails - far more than are posted here. As they were sent to me directly, I assume the sender's did not wish to share. Hence, I would not feel comfortable in sharing same. Suffice to say: Most emailers are happy with the KPA500 and do recommend it. However, based on a number of comments, I do think I will purchase the 500 Watt tuner box also. Bill W2BLC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 - power out question
Bill, I suspect it has more to do with the default reply nature of the group, in that replies are sent straight back to the originator of the message rather than to the group itself. It's not typical of the way that groups tend to be set up these days and so catches us all out from time to time! If I may add my indirect experience of the KPA500 in that a good friend of mine bought one, he too very quickly followed up with an order for the KAT500 and is, I believe, very happy with its performance. 73 Stephen G4SJP On 12 May 2013 20:35, Bill b...@w2blc.net wrote: I received many direct emails - far more than are posted here. As they were sent to me directly, I assume the sender's did not wish to share. Hence, I would not feel comfortable in sharing same. Suffice to say: Most emailers are happy with the KPA500 and do recommend it. However, based on a number of comments, I do think I will purchase the 500 Watt tuner box also. Bill W2BLC __**__**__ Elecraft mailing list Home: http://mailman.qth.net/**mailman/listinfo/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.**htmhttp://mailman.qth.net/mmfaq.htm Post: mailto:elecr...@mailman.qth.**net Elecraft@mailman.qth.net 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 - power out question
I have found that the KPA500 and KAT500 combination is outstanding. In fact one thing I noticed right away about the KAT500 is that when it is tuned correctly I can both see and hear the difference in RX signal strength in the headphones and on the P3 SVGA screen. My Alpha 87A and Palstar AT5K are both setting idle now until I begin to get serious about DXCC on 160m and 80m CW this fall. 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member On Sun, 12 May 2013 20:42:39 +0100, Stephen Prior eastbrantw...@gmail.com wrote: Bill, I suspect it has more to do with the default reply nature of the group, in that replies are sent straight back to the originator of the message rather than to the group itself. It's not typical of the way that groups tend to be set up these days and so catches us all out from time to time! If I may add my indirect experience of the KPA500 in that a good friend of mine bought one, he too very quickly followed up with an order for the KAT500 and is, I believe, very happy with its performance. 73 Stephen G4SJP [snip] __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KPA500 voltage tap question
Hello, all... I've just finished assembling my KPA500 and have a question about selecting the correct tap wire to set the operating voltage. My 220v line reads 231v no load, so I selected the yellow tap. The amp no load voltage is 71.7v. The transmitting voltage is 58v DC which is marginally low. If I select the red tap then I expect I'll be marginally high. If my choice is between marginally low and marginally high, which is the better choice? Thanks for comments. Sure is a nice piece of equipment... as usual from Elecraft. ...robert -- Robert G. Strickland, PhD, ABPH - KE2WY rc...@verizon.net Syracuse, New York, USA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 voltage tap question
On Sat, Sep 8, 2012 at 1:13 PM, Robert G. Strickland rc...@verizon.net wrote: Hello, all... I've just finished assembling my KPA500 and have a question about selecting the correct tap wire to set the operating voltage. My 220v line reads 231v no load, so I selected the yellow tap. The amp no load voltage is 71.7v. The transmitting voltage is 58v DC which is marginally low. If I select the red tap then I expect I'll be marginally high. If my choice is between marginally low and marginally high, which is the better choice? Thanks for comments. Try the red tap. So long as the idle voltage is still under 85V, go with it. 73, ~iain / N6ML __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KPA500 pounded--fan question
Dear Gang: I have been pounding my KPA500 on 6m WSJT meteor scatter and love it (this is 30 sec rx, 30 sec TX full power for hours). Here is my question for you RF engineers. I have been testing the fan settings. Here is what I get for the peak PA temp at different settings. NOR = 65, 3 = 65, 4 = 61, 5 = 55, 6 = 52 degrees peak PA temp. These are all stablized numbers. One of the most charming attributes of the KPA500 is its SILENCE. I hardly ever hear it when I use it on CW at NOR fan setting. So, will I prolong the life of my PA transistors with a higher fan setting in this application? If the PA sensor is reading 65 degrees, the actual device temperature has got to be higher. Is the higher fan speed and increased noise worth it? Or should I leave it on NOR. Thanks, Eric WD6DBM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KPA500]And the question is ...
A European model will be required: we don't have the gain restriction you have, however, we do like stability and putting lots of gain into one box could be tricky. David G3UNA - Original Message - From: Phil Townsend phi...@mac.com To: Bruce Beford bruce.bef...@myfairpoint.net Cc: elecraft@mailman.qth.net Sent: Tuesday, March 15, 2011 9:31 PM Subject: Re: [Elecraft] [KPA500]And the question is ... I'll do it! Just send me a KPA500 and I am good to go! Phil Santa Fe On Mar 15, 2011, at 3:16 PM, Bruce Beford wrote: Mark wrote: Who is going to calculated alternate replacement values of the resistors in the two attenuators so that the KPA500 may be driven to a full 500 watts by a K3 / 10? Mark, NØOKS You are, if you intend to try this on your new KPA-500. -Bruce, N1RX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KPA500]And the question is ...
Agreed. 73, Eric On 3/16/2011 11:02 AM, David Cutter wrote: we don't have the gain restriction you have, however, we do like stability and putting lots of gain into one box could be tricky. David G3UNA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] [KPA500]And the question is ...
Who is going to calculated alternate replacement values of the resistors in the two attenuators so that the KPA500 may be driven to a full 500 watts by a K3 / 10? Mark, NØOKS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KPA500]And the question is ...
Mark wrote: Who is going to calculated alternate replacement values of the resistors in the two attenuators so that the KPA500 may be driven to a full 500 watts by a K3 / 10? Mark, NØOKS You are, if you intend to try this on your new KPA-500. -Bruce, N1RX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KPA500]And the question is ...
I'll do it! Just send me a KPA500 and I am good to go! Phil Santa Fe On Mar 15, 2011, at 3:16 PM, Bruce Beford wrote: Mark wrote: Who is going to calculated alternate replacement values of the resistors in the two attenuators so that the KPA500 may be driven to a full 500 watts by a K3 / 10? Mark, NØOKS You are, if you intend to try this on your new KPA-500. -Bruce, N1RX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [KPA500]And the question is ...
OK, so far I get the first pad to have a characteristic impedance of 70 ohms and an attenuation of 2.5 dB. I need help on the second one as it is an impedance converter also. Mark, NØOKS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KPA500 carrying case question
I would take one to match the K3 bag I got from you. Of course I'd like the amp first ;-) John K2QY __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 carrying case question
Rose, I'll buy one when I get the amp. However, because my SGC-230 autotuner can't handle the power, I probably won't buy the amp until Elecraft releases the new autotuner and I have one of those. Oscar, WB5GCX On Thu, Mar 3, 2011 at 11:26 AM, Rose elecraftcov...@gmail.com wrote: I'm about to have foam end caps made for carrying the KPA500 amplifier in a DXpedition case, and I'd like to have some idea of how many to order. They will be identical to the K3 cases. Do you expect to purchase one? 73! Rose - N7HKW elecraftcov...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 carrying case question
Carrying CaseHmmm... is the KPA500 in production? Sorry Rose for posing a question off your post! Duane I'm about to have foam end caps made for carrying the KPA500 amplifier in a DXpedition case, and I'd like to have some idea of how many to order. They will be identical to the K3 cases. Do you expect to purchase one? Rose -- bw...@fastmail.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 carrying case question
Hi Duane, No, the KPA500 isn't in production that I'm aware of, but will be soon. I'm just getting prepared. I've already made a dust cover for one of the beta testers, and have a number of responses to my question that indicate plans to purchase dust covers and/or carrying cases by future KPA500 purchasers. 73! Rose - N7HKW elecraftcov...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 carrying case question
Rose, I confirm that I need both a dust cover and a carry case and when your ready please let me know so that I can make arrangements with you. Regards, Gary On Sat, Mar 5, 2011 at 6:35 AM, Rose elecraftcov...@gmail.com wrote: Hi Duane, No, the KPA500 isn't in production that I'm aware of, but will be soon. I'm just getting prepared. I've already made a dust cover for one of the beta testers, and have a number of responses to my question that indicate plans to purchase dust covers and/or carrying cases by future KPA500 purchasers. 73! Rose - N7HKW elecraftcov...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- VK4FD - Motorhome Mobile http://www.qsl.net/vk4fd/ K3 #679 Dare to be different!!! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KPA500 carrying case question
I'm about to have foam end caps made for carrying the KPA500 amplifier in a DXpedition case, and I'd like to have some idea of how many to order. They will be identical to the K3 cases. Do you expect to purchase one? 73! Rose - N7HKW elecraftcov...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
