Thread: my SWR reading
View Single Post
  #16   Report Post  
Old October 25th 07, 04:16 PM posted to rec.radio.amateur.antenna
Cecil Moore[_2_] Cecil Moore[_2_] is offline
external usenet poster
 
First recorded activity by RadioBanter: Mar 2007
Posts: 3,521
Default my SWR reading

Jeff wrote:
Assuming the transmitter does not fold back, the 11% reflected power
will not change the signal strength... The reflected 11% will be 88%
radiated on the return trip (minus any line losses) and 88% of that on
the next round trip, etc... ]


That will only be true IF the Tx output stage has an infinite SWR looking
back in to it, AND the reflection is in phase with the forward signal. In
practice this will not happen.


How about this?

50 ohm
100w TX-------1/2WL Z0=100 ohm feedline--------50 ohm load

--
73, Cecil http://www.w5dxp.com