KPA1500 Cooling
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Firm believer in cooler is better. Also believe one must be careful not to
disrupt designed air flow. I purchased this : https://www.amazon.com/gp/product/B0059BCVXY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 and put it on the desk to the side of the amp. Seems to aid in moving the warm air from under amp and drops the temp 2-3 degrees C. Richard *W7ZR* ex:5C5Z, CN2ZR, K2JSP, W6SBZ, W7KXR, K9ZIJ, W9KNF, W0KDF, W0MQU, J68ZR, KC6ZR, PJ4/W7ZR, KH2,W7ZR, KH6/W7ZR, V31ZR, VK4AAZ, XE2DV *Be joyful in hope, patient in affliction, faithful in prayer* ______________________________________________________________ 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 Message delivered to [hidden email] |
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Personally I would love to see a liquid cooled high powered linear amplifier.
Sent from my iPad > On Jul 23, 2020, at 12:40 PM, Richard Zalewski <[hidden email]> wrote: > > Firm believer in cooler is better. Also believe one must be careful not to > disrupt designed air flow. I purchased this : > https://www.amazon.com/gp/product/B0059BCVXY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 > and put it on the desk to the side of the amp. Seems to aid in moving the > warm air from under amp and drops the temp 2-3 degrees C. > > Richard > *W7ZR* ex:5C5Z, CN2ZR, K2JSP, W6SBZ, W7KXR, K9ZIJ, W9KNF, W0KDF, W0MQU, > J68ZR, KC6ZR, PJ4/W7ZR, KH2,W7ZR, KH6/W7ZR, V31ZR, VK4AAZ, XE2DV > > > *Be joyful in hope, patient in affliction, faithful in prayer* > ______________________________________________________________ > 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 > Message delivered to [hidden email] > ______________________________________________________________ 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 Message delivered to [hidden email] |
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Until it leaks on the LDMOS devices.
Seriously, I would like to see the KPA1500 available with a larger finned heat sink and in a larger enclosure using 120 mm fans. That would move a lot of air across a larger heat dissipation area keeping noise and temps down. I love the 1500 and under normal use I can tolerate the noise. Contesting gets a little loud. That is what the Bose QC30 noise cancelling headphones are for. Dave wo2x Sent from my waxed string and tin cans. > On Jul 23, 2020, at 1:00 PM, W2xj <[hidden email]> wrote: > > Personally I would love to see a liquid cooled high powered linear amplifier. > > Sent from my iPad > >> On Jul 23, 2020, at 12:40 PM, Richard Zalewski <[hidden email]> wrote: >> >> Firm believer in cooler is better. Also believe one must be careful not to >> disrupt designed air flow. I purchased this : >> https://www.amazon.com/gp/product/B0059BCVXY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 >> and put it on the desk to the side of the amp. Seems to aid in moving the >> warm air from under amp and drops the temp 2-3 degrees C. >> >> Richard >> *W7ZR* ex:5C5Z, CN2ZR, K2JSP, W6SBZ, W7KXR, K9ZIJ, W9KNF, W0KDF, W0MQU, >> J68ZR, KC6ZR, PJ4/W7ZR, KH2,W7ZR, KH6/W7ZR, V31ZR, VK4AAZ, XE2DV >> >> >> *Be joyful in hope, patient in affliction, faithful in prayer* >> ______________________________________________________________ >> 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 >> Message delivered to [hidden email] >> > > ______________________________________________________________ > 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 > Message delivered to [hidden email] 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 Message delivered to [hidden email] |
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We have 40 KW liquid cooled solid state transmitters and they don’t leak. It depends on if it is properly designed. There are TV transmitters over 100 KW and liquid cooling is common in many models and they don’t leak as well.
Sent from my iPad > On Jul 23, 2020, at 1:10 PM, Dave <[hidden email]> wrote: > > Until it leaks on the LDMOS devices. > > > Seriously, I would like to see the KPA1500 available with a larger finned heat sink and in a larger enclosure using 120 mm fans. That would move a lot of air across a larger heat dissipation area keeping noise and temps down. > > I love the 1500 and under normal use I can tolerate the noise. Contesting gets a little loud. That is what the Bose QC30 noise cancelling headphones are for. > > Dave wo2x > > Sent from my waxed string and tin cans. > >> On Jul 23, 2020, at 1:00 PM, W2xj <[hidden email]> wrote: >> >> Personally I would love to see a liquid cooled high powered linear amplifier. >> >> Sent from my iPad >> >>>> On Jul 23, 2020, at 12:40 PM, Richard Zalewski <[hidden email]> wrote: >>> >>> Firm believer in cooler is better. Also believe one must be careful not to >>> disrupt designed air flow. I purchased this : >>> https://www.amazon.com/gp/product/B0059BCVXY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 >>> and put it on the desk to the side of the amp. Seems to aid in moving the >>> warm air from under amp and drops the temp 2-3 degrees C. >>> >>> Richard >>> *W7ZR* ex:5C5Z, CN2ZR, K2JSP, W6SBZ, W7KXR, K9ZIJ, W9KNF, W0KDF, W0MQU, >>> J68ZR, KC6ZR, PJ4/W7ZR, KH2,W7ZR, KH6/W7ZR, V31ZR, VK4AAZ, XE2DV >>> >>> >>> *Be joyful in hope, patient in affliction, faithful in prayer* >>> ______________________________________________________________ >>> 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 >>> Message delivered to [hidden email] >>> >> >> ______________________________________________________________ >> 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 >> Message delivered to [hidden email] > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qt ______________________________________________________________ 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 Message delivered to [hidden email] |
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