Steve,
Firstly your figures are out for the 50 Ohm system; the figures are
273.9V and 5.5A
Once the SWR is no longer 1:1, there is an infinite range of impedances
for any particular SWR, and therefore an infinite range of voltages and
currents for a dissipation of 1500W. However, here are the upper and
lower limits:
2:1 SWR: 387.3V / 3.9A thru 193.6V / 7.7A
3:1 SWR: 474.3V / 3.2A thru 158.1V / 9.5A
Steve G3TXQ
On 26/09/2016 16:17, Steve NR4M wrote:
Hello all,
As I recall, in a 50 ohm system, 1500 watts is about 400 volts and
about 6 amps. Could someone give me an approximation of what I could
expect at 2:1 and 3:1 SWR?
Or, direct me to a formula.
I am looking at some gas discharge devices to help me mitigate
lightning issues and damage.
I have been using low voltage ones for years with low voltage DC
control lines and such, and now I'd like to try and apply them to the
coax lines.
73 de Steve NR4M
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