[Antennas] Running Ladder Line Through a Wall

[Dan Richardson]

I'm sorry but I don't understand how you are able to determine the 
transmission line loss by measuring only the input power. The only way I 
understand that transmission line losses can be measured by comparing the 
input power to the output power. In other words what goes in minus what 
comes out equals line loss.

Danny




At 05:45 AM 9/9/2004, you wrote:
>power meter was 50-ohm... as it was between the tuner and the rig
>
>the dummy load was 1000 ohms which was typical of the antenna
>at the freqs I operated.
>
>I really don't care the impedence bump between the balanced coax and
>the open-wire and it is fed with a tuner...
>
>I can see where using balanced coax and a "tuned" feeder could
>cause problems.
>
>72/73,
>
>Bill  KA8VIT
>
>*********** REPLY SEPARATOR  ***********
>
>On 9/9/2004 at 5:25 AM Dan Richardson wrote:
>
> >At 04:40 AM 9/9/2004, you wrote:
> >>I am not an engineer and won't argue with the theory,
> >>but in actual usage here, there was an increase in loss
> >>as measured with a dummy load and power meter.
> >
> >
> >I wondering how you made the measurements? Was your dummy load 100-ohms or
>
> >50-ohms and how did you measure the power level? If you used an in-line
> >power meter was it designed for a 50-ohm or 100-ohm line?
> >
> >Danny
> >
>
>Bill Chaikin, KA8VIT
>USS COD Amateur Radio Club - W8COD
>WW2 Submarine USS COD SS-224
>
>ka8vit at ix.netcom.com
>http://207.166.196.59/ka8vit
>http://www.qsl.net/ka8vit
>
>QRP-L NBR: 2596