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How much power for coax?
Does anyone have experience with how much power can be run through rg-58
versus rg-8. I am purchasing an Ameritron al-80B and will be running about 1K out. Can I still get away with RG-58? I will be using 160 thru 40 meters. I have a 200 foot run of RG-8 running to my antenna site, but I hate to feed the dipole with something so heavy as RG-8. thanks in advance for any help W0EZI |
"flashback" wrote in message
... Does anyone have experience with how much power can be run through rg-58 versus rg-8. I am purchasing an Ameritron al-80B and will be running about 1K out. Can I still get away with RG-58? I will be using 160 thru 40 meters. I have a 200 foot run of RG-8 running to my antenna site, but I hate to feed the dipole with something so heavy as RG-8. thanks in advance for any help W0EZI At 10 MHz, the power rating for RG-58 (Polyethylene Dielectric) is 730w and for RG-8 it is 3700w). For foam dielectric, use something like 50% of the above. Note that RG-8x is rated at 1000w at this frequency. Data from http://www.nemal.com/Catalog/30.pdf Paul AB0SI |
"flashback" wrote in message
... Does anyone have experience with how much power can be run through rg-58 versus rg-8. I am purchasing an Ameritron al-80B and will be running about 1K out. Can I still get away with RG-58? I will be using 160 thru 40 meters. I have a 200 foot run of RG-8 running to my antenna site, but I hate to feed the dipole with something so heavy as RG-8. thanks in advance for any help W0EZI At 10 MHz, the power rating for RG-58 (Polyethylene Dielectric) is 730w and for RG-8 it is 3700w). For foam dielectric, use something like 50% of the above. Note that RG-8x is rated at 1000w at this frequency. Data from http://www.nemal.com/Catalog/30.pdf Paul AB0SI |
"flashback" wrote in message
... Does anyone have experience with how much power can be run through rg-58 versus rg-8. I am purchasing an Ameritron al-80B and will be running about 1K out. Can I still get away with RG-58? I will be using 160 thru 40 meters. I have a 200 foot run of RG-8 running to my antenna site, but I hate to feed the dipole with something so heavy as RG-8. thanks in advance for any help W0EZI At 10 MHz, the power rating for RG-58 (Polyethylene Dielectric) is 730w and for RG-8 it is 3700w). For foam dielectric, use something like 50% of the above. Note that RG-8x is rated at 1000w at this frequency. Data from http://www.nemal.com/Catalog/30.pdf Paul AB0SI |
Also I understand that coax power handling capabilities should be de-rated as the SWR goes up. Any one have a formula for this ? -- Caveat Lecter "pfriedmanNoSpam" wrote in message ... "flashback" wrote in message ... Does anyone have experience with how much power can be run through rg-58 versus rg-8. I am purchasing an Ameritron al-80B and will be running about 1K out. Can I still get away with RG-58? I will be using 160 thru 40 meters. I have a 200 foot run of RG-8 running to my antenna site, but I hate to feed the dipole with something so heavy as RG-8. thanks in advance for any help W0EZI At 10 MHz, the power rating for RG-58 (Polyethylene Dielectric) is 730w and for RG-8 it is 3700w). For foam dielectric, use something like 50% of the above. Note that RG-8x is rated at 1000w at this frequency. Data from http://www.nemal.com/Catalog/30.pdf Paul AB0SI |
Also I understand that coax power handling capabilities should be de-rated as the SWR goes up. Any one have a formula for this ? -- Caveat Lecter "pfriedmanNoSpam" wrote in message ... "flashback" wrote in message ... Does anyone have experience with how much power can be run through rg-58 versus rg-8. I am purchasing an Ameritron al-80B and will be running about 1K out. Can I still get away with RG-58? I will be using 160 thru 40 meters. I have a 200 foot run of RG-8 running to my antenna site, but I hate to feed the dipole with something so heavy as RG-8. thanks in advance for any help W0EZI At 10 MHz, the power rating for RG-58 (Polyethylene Dielectric) is 730w and for RG-8 it is 3700w). For foam dielectric, use something like 50% of the above. Note that RG-8x is rated at 1000w at this frequency. Data from http://www.nemal.com/Catalog/30.pdf Paul AB0SI |
Also I understand that coax power handling capabilities should be de-rated as the SWR goes up. Any one have a formula for this ? -- Caveat Lecter "pfriedmanNoSpam" wrote in message ... "flashback" wrote in message ... Does anyone have experience with how much power can be run through rg-58 versus rg-8. I am purchasing an Ameritron al-80B and will be running about 1K out. Can I still get away with RG-58? I will be using 160 thru 40 meters. I have a 200 foot run of RG-8 running to my antenna site, but I hate to feed the dipole with something so heavy as RG-8. thanks in advance for any help W0EZI At 10 MHz, the power rating for RG-58 (Polyethylene Dielectric) is 730w and for RG-8 it is 3700w). For foam dielectric, use something like 50% of the above. Note that RG-8x is rated at 1000w at this frequency. Data from http://www.nemal.com/Catalog/30.pdf Paul AB0SI |
Download program COAXRATE from website below in a few seconds and run
immediately. Easy to use. It calculates, amongst other useful things, power loss and temperature rise in solid polyethylene coaxial cable, versus dimensions, RF power input, SWR etc., under various physical conditions. It is at least as accurate as manufacturers' own rating data. It takes into account ambient temperature which almost invariably is ignored. Cable power rating depends on whether it is used at midnight in mid-winter in N.Alaska, or at noon, in mid-summer, in New Mexico. Data in ARRL handbooks is fairly useless. Program COAXRATE. ---- .................................................. .......... Regards from Reg, G4FGQ For Free Radio Design Software go to http://www.btinternet.com/~g4fgq.regp .................................................. .......... ---- Reg, G4FGQ |
Download program COAXRATE from website below in a few seconds and run
immediately. Easy to use. It calculates, amongst other useful things, power loss and temperature rise in solid polyethylene coaxial cable, versus dimensions, RF power input, SWR etc., under various physical conditions. It is at least as accurate as manufacturers' own rating data. It takes into account ambient temperature which almost invariably is ignored. Cable power rating depends on whether it is used at midnight in mid-winter in N.Alaska, or at noon, in mid-summer, in New Mexico. Data in ARRL handbooks is fairly useless. Program COAXRATE. ---- .................................................. .......... Regards from Reg, G4FGQ For Free Radio Design Software go to http://www.btinternet.com/~g4fgq.regp .................................................. .......... ---- Reg, G4FGQ |
Download program COAXRATE from website below in a few seconds and run
immediately. Easy to use. It calculates, amongst other useful things, power loss and temperature rise in solid polyethylene coaxial cable, versus dimensions, RF power input, SWR etc., under various physical conditions. It is at least as accurate as manufacturers' own rating data. It takes into account ambient temperature which almost invariably is ignored. Cable power rating depends on whether it is used at midnight in mid-winter in N.Alaska, or at noon, in mid-summer, in New Mexico. Data in ARRL handbooks is fairly useless. Program COAXRATE. ---- .................................................. .......... Regards from Reg, G4FGQ For Free Radio Design Software go to http://www.btinternet.com/~g4fgq.regp .................................................. .......... ---- Reg, G4FGQ |
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