there are a lot of stations with that RF budget John [email protected] K5VGM WI2XLJIn a message dated 8/10/2020 1:01:55 PM Central Standard Time, [email protected] writes:
I think I misspoke. The station had a 40kW ERP, but the transmitter put out right at 20kW. On 8/10/2020 12:53 PM, john Parmalee via BVARC wrote:Yes it would take a lot of power to leak out of a dummy load and exceed the ham limit. I recall working with a load on a 50 kw TV transmitter. It had dowtherm circulated over an element about a foot long and an inch in diameter. It was a five horse pump and there was a heat exchanger to the house water supply., That one was good for CCS. John [email protected] K5VGM WI2XLJIn a message dated 8/10/2020 7:57:49 AM Central Standard Time, [email protected] write I was told there would be no math on this reflector, but 30db is 1000 times, so 1.5 MW That would take one heck of a dummy load. Not that I imagine that I've seen everything, but the biggest dummy load I've ever seen was able to handle 40 kW of 100 MHz signal for brief periods with the coolant circulating. I think someone's mistaken though. Hams don't have radiated power limits above 1.5 MHz. On 8/9/2020 5:17 PM, john Parmalee via BVARC wrote:well if the leakage from a dummy load is 30 db down how much power would you need to be 30 db above 1500 watt? John [email protected] K5VGM WI2XLJIn a message dated 8/9/2020 8:12:28 AM Central Standard Time, [email protected] writes: Does the the permitted radiated power limit for hams apply to dummy loads? Nizar K0NM. On Aug 8, 2020, at 10:16 PM, Chris Luppens via BVARC <[email protected]> wrote: Could actual location make a difference. Pieces are in different countries. Typos Compliments of iPhoneChris Luppens On Aug 8, 2020, at 10:12 PM, Rick Hiller via BVARC <[email protected]> wrote: Hamfest is pretty good so far. I did notice on the Expert Amplifier video that they demo'd the 1.5K amp into a dummy load, of course, and they got 1500 watts out on 30 meters (10 MHz). 1500 on 30 ???? Not sure they knew what they were doing. RH | | Virus-free. www.avast.com | ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
