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-   -   What would 1000 Watts HF do if you touched an antenna? (https://www.radiobanter.com/antenna/290624-what-would-1000-watts-hf-do-if-you-touched-antenna.html)

[email protected] June 25th 20 11:18 PM

What would 1000 Watts HF do if you touched an antenna?
 
Hi I need to know how mutch wire 14 gauge can transmit by watts from hf on my base yaesu ft897

Fred McKenzie June 26th 20 02:50 AM

What would 1000 Watts HF do if you touched an antenna?
 
In article ,
wrote:

Hi I need to know how mutch wire 14 gauge can transmit by watts from hf on my
base yaesu ft897


If your antenna is fed with 50 Ohm Co-Ax, 1000 Watts would produce
223.61 Volts and 4.47 Amps RF at the feed point. Along the antenna, I
expect voltage to increase and current to decrease as you move away from
a 50 Ohm feed point.

I think a 14 gauge wire should be OK for the antenna, but DO NOT TOUCH
IT. It might burn your finger off.

But what are you really asking? I understand the FT-897 has a 100 Watt
transmitter. A 100 Watt transmitter would produce 70.71 Volts and 1.41
Amps at the 50 Ohm feed point. It might not burn your finger off, but
would cause a serious burn.

Fred

Rob[_8_] June 26th 20 09:50 AM

What would 1000 Watts HF do if you touched an antenna?
 
wrote:
Hi I need to know how mutch wire 14 gauge can transmit by watts from hf on my base yaesu ft897


That is impossible to tell, because the wire diameter (gauge) only
determines the maximum current, not the maximum voltage. And watts
is current times voltage.

So when you use a higer voltage with the same current (i.e. you have
a higher antenna impedance, of course matched with a tuner) you can
use thinner wire at higher power.

Ralph Mowery June 26th 20 04:50 PM

What would 1000 Watts HF do if you touched an antenna?
 
In article ,
says...

Hi I need to know how mutch wire 14 gauge can transmit by watts from hf on my base yaesu ft897



14 gauge wire for an antenna will take much more power than legal in any
amateur radio.

The 14 wire will take over 1500 watts easy.

Any wire that is strog enough to support its self will transmit over 100
watts.





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