[Elecraft] Elecraft CW Net Report
Good Evening, I think I added noise, or QRN, to every signal report. It started moderately loud, increasing steadily throughout both nets. My ears were ringing after I was done with the second net. Forty meters was working well close in, as well as in the first hop. MUF (NVIS) was 7.2 MHz so Idaho and Washington were quite strong. Twenty meters worked across the Midwest into the Southeast. Even though there was more noise, the signals were strong enough. QSB worked to my advantage pulling in more from the SE. On 14050.5 kHz at 2200z: NO8V - John - MI W0CZ - Ken - ND NS4V - David - NC K6XK - Roy - IA K4JPN - Steve - GA AB9V - Mike - IN On 7047 kHz at z: WM5F - Dwight - ID K0DTJ - Brian - CA K7TXA - Jim - ID KG7V - Marv - WA Until next week 73, Kevin. KD5ONS - It was a quiet morning, the town covered over with darkness and at ease in bed. Summer gathered in the weather, the wind had the proper touch, the breathing of the world was long and warm and slow. You had only to rise, lean from your window, and know that this indeed was the first real time of freedom and living, this was the first morning of summer. __ 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] KPA1500 power supply (remote)
On 2022-08-14 08:43, Dick Dievendorff wrote: The KPA1500 power supply container houses several power supplies. Only a small one is on all the time. It can run a microcontroller and switch the larger supplies, but not much else. *** And with good reason. It's hard to switch say 65Amps at 50V ( I don't know the exact voltage of the PA, but 50 - 53V is common ). And PA's are very sensitive to voltage drop. The less, the better. I have a very quiet homebrew amp with a remote mounted power supply. The supply lives in a box under the bed. Right now I duck under the bed to turn it on & off. I have a high power 12V relay on the bench. I plan to put that relay at the AC line input and use a separate 12V power supply to power it. A couple of wires to the RF deck going to a little tiny toggle switch on the front panel. Two other small wires will also go to the power supply to talk to it via CAN bus, which can monitor output current and two power supply temperatures. I *could* extend the CAN bus to a processor to control the power input relay, but I don't want to work that hard :). - Jerry, KF6VB The 50V and 12v supplies are switched completely off when the amp is “off”. The fans are associated with the 50v supply. It’s like a TV set that can be operated by a remote control. Or a wall power switch that can be turned on by a microcontroller. 73 de Dick, K6KR On Aug 14, 2022, at 08:17, Rick Tavan wrote: I leave my KPA1500 PS on continuously, whether I'm local or remote. No observed ill effects. When the amp is off, the PS is silent. I haven't measured its current drain in that condition but I expect it is minimal. I have a remote relay box that I could use to key a larger relay in the 230V AC supply line but I don't see any need to do that. 73, /Rick N6XI On Sun, Aug 14, 2022 at 6:30 AM Jorge Diez - CX6VM wrote: Hello! when you use the KPA1500 remotely, the power is always on. With which it could spend several years on continuously. Could this be harmful to the power supply? Is it thought and designed to withstand this? Is there a way to turn the power on and off remotely? thanks! -- 73, Jorge CX6VM/CW5W __ 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 rta...@gmail.com -- -- Rick Tavan Truckee and Saratoga, CA __ 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 d...@elecraft.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 Message delivered to je...@tr2.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 power supply (remote)
The KPA1500 power supply container houses several power supplies. Only a small one is on all the time. It can run a microcontroller and switch the larger supplies, but not much else. The 50V and 12v supplies are switched completely off when the amp is “off”. The fans are associated with the 50v supply. It’s like a TV set that can be operated by a remote control. Or a wall power switch that can be turned on by a microcontroller. 73 de Dick, K6KR > On Aug 14, 2022, at 08:17, Rick Tavan wrote: > > I leave my KPA1500 PS on continuously, whether I'm local or remote. No > observed ill effects. When the amp is off, the PS is silent. I haven't > measured its current drain in that condition but I expect it is minimal. I > have a remote relay box that I could use to key a larger relay in the 230V > AC supply line but I don't see any need to do that. > > 73, > > /Rick N6XI > >> On Sun, Aug 14, 2022 at 6:30 AM Jorge Diez - CX6VM >> wrote: >> >> Hello! >> >> when you use the KPA1500 remotely, the power is always on. With which it >> could spend several years on continuously. Could this be harmful to >> the power supply? >> >> Is it thought and designed to withstand this? >> >> Is there a way to turn the power on and off remotely? >> >> thanks! >> >> -- >> 73, >> Jorge >> CX6VM/CW5W >> __ >> 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 rta...@gmail.com >> > > > -- > -- > > Rick Tavan > Truckee and Saratoga, CA > __ > 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 d...@elecraft.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 power supply (remote)
I leave my KPA1500 PS on continuously, whether I'm local or remote. No observed ill effects. When the amp is off, the PS is silent. I haven't measured its current drain in that condition but I expect it is minimal. I have a remote relay box that I could use to key a larger relay in the 230V AC supply line but I don't see any need to do that. 73, /Rick N6XI On Sun, Aug 14, 2022 at 6:30 AM Jorge Diez - CX6VM wrote: > Hello! > > when you use the KPA1500 remotely, the power is always on. With which it > could spend several years on continuously. Could this be harmful to > the power supply? > > Is it thought and designed to withstand this? > > Is there a way to turn the power on and off remotely? > > thanks! > > -- > 73, > Jorge > CX6VM/CW5W > __ > 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 rta...@gmail.com > -- -- Rick Tavan Truckee and Saratoga, CA __ 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] KPA1500 power supply (remote)
Hello Lou thanks very much for the information! 73, Jorge El dom, 14 ago 2022 a las 11:13, Lou Laderman () escribió: > Here’s a thread from the Flex Community regarding remote relay setups to > control power to 220v amps with some good ideas. > > > https://community.flexradio.com/discussion/8023204/remote-220-240vac-switch#latest > > I built a remote 220v power switch using this relay from Amazon > > > https://www.amazon.com/gp/aw/d/B07FCJ39QR?psc=1=ppx_pop_mob_b_asin_title > > I’m using an old 110v to 12v wall wort that’s plugged into one of the > receptacles on a Digital Loggers web pro switch to control the relay. Works > extremely well. It’s behind my router so if my network goes down I can’t > access it directly. There are web switches available that can be directly > accessed if that’s an important need for you. > > 73. Lou W0FK > > Lou Laderman > Sent from my mobile device > > On Aug 14, 2022, at 8:29 AM, Jorge Diez - CX6VM > wrote: > > Hello! > > when you use the KPA1500 remotely, the power is always on. With which it > could spend several years on continuously. Could this be harmful to > the power supply? > > Is it thought and designed to withstand this? > > Is there a way to turn the power on and off remotely? > > thanks! > > -- > 73, > Jorge > CX6VM/CW5W > __ > 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 llader...@icloud.com > -- 73, Jorge CX6VM/CW5W __ 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] KPA1500 power supply (remote)
Here’s a thread from the Flex Community regarding remote relay setups to control power to 220v amps with some good ideas. https://community.flexradio.com/discussion/8023204/remote-220-240vac-switch#latest I built a remote 220v power switch using this relay from Amazon https://www.amazon.com/gp/aw/d/B07FCJ39QR?psc=1=ppx_pop_mob_b_asin_title I’m using an old 110v to 12v wall wort that’s plugged into one of the receptacles on a Digital Loggers web pro switch to control the relay. Works extremely well. It’s behind my router so if my network goes down I can’t access it directly. There are web switches available that can be directly accessed if that’s an important need for you. 73. Lou W0FK Lou Laderman Sent from my mobile device On Aug 14, 2022, at 8:29 AM, Jorge Diez - CX6VM wrote: Hello! when you use the KPA1500 remotely, the power is always on. With which it could spend several years on continuously. Could this be harmful to the power supply? Is it thought and designed to withstand this? Is there a way to turn the power on and off remotely? thanks! -- 73, Jorge CX6VM/CW5W __ 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 llader...@icloud.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 Message delivered to arch...@mail-archive.com
[Elecraft] KPA1500 power supply (remote)
Hello! when you use the KPA1500 remotely, the power is always on. With which it could spend several years on continuously. Could this be harmful to the power supply? Is it thought and designed to withstand this? Is there a way to turn the power on and off remotely? thanks! -- 73, Jorge CX6VM/CW5W __ 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
