don't forget any loss figures are multiplied at higher swr beacuse when you have reflected power the signal has to travel back and forth o the coax before its radiated  thats why windw r ladder line is so grat it's loss even at high swr is almost nothing :)
73 kb7nla
On Jul 20, 2010, at 7:01 PM, John Miller wrote:

> If you have any power above and beyond the radio at all, rg-58 will bite you 
> bad. It can't handle it, I don't like to use it for anything if I can help 
> it but would never put more than 100 watts through it.
> ----- Original Message ----- 
> From: "Bob Heiser" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, July 20, 2010 11:17 AM
> Subject: Re: Need some input on HF wire antennas for the Michigan house
> 
> 
>> Hello Tom,
>> On 40 and 80 meters you could use R G 58u and above 40 you might want to 
>> use
>> R G 8 U.
>> Bob Heiser
>> K9BOB
>> ----- Original Message ----- 
>> From: "tom behler" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Tuesday, July 20, 2010 10:11 AM
>> Subject: Re: Need some input on HF wire antennas for the Michigan house
>> 
>> 
>>>   Wonder what the comparison would be for RG8X?
>>> 
>>> 73 from Tom Behler:  KB8TYJ
>>> 
>>> ----- Original Message ----- 
>>> From: "Howard Kaufman" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Tuesday, July 20, 2010 4:38 AM
>>> Subject: Fw: Need some input on HF wire antennas for the Michigan house
>>> 
>>> 
>>> I forwarded the feedline comparison page to a friend of mine.  I have no
>>> idea if it is speech friendly, but here are the surprising results of his
>>> test data.
>>> 
>>> I put the first Wireman ladderline in.  100 feet.  SWR 10 to 1.  Power 
>>> 100
>>>> watts.  Frequency 30 megahertz.  Loss is 1.33 dB.  74 watts is still
>>>> radiated.
>>>> 
>>>> Then I put in Belden RG 58.  Same parameters otherwise.  Loss is 5.5 dB.
>>>> 29
>>>> watts radiated on 10 meters.
>>>> 
>>>> Is coax that more convenient than ladder line???
>>>> 
>>>> Thanks for the reference.