[TowerTalk] Calculating CableLoss With Wattmeter HELP

[Fred Roberts]

Sarky-

If you put the Bird Wattmeter between the PSG Power Source and the
cable, and then measure forward power, P1.  Then move the Bird to the
end of the coax but before the load, and measure forward power, P2. 
Then P1-P2 = Power Loss.

As you have described your procedure, it sounds like you are measuring
Forward Power and Reflected Power (zero), hence all forward and no
reflected or SWR=1:1.

Hope this helps.

73-
Fred, W6TKV

sarky wrote:
> 
> Hello all
> 
> I have the Bird 43 Wattmeter, and i am trying to calculate Cable loss.
> I am using a PSG Power Source Generator sold by YDI.com and
> i dont seem to be able to figure out how to calculate the LOSS .
> 
> what i get now if i turn the slug towards the termincator i get a reading
> and if i turn it 180deg towards the powersource i get 0.
> 
> PSG ==== Wattmetert (1W 2.4 - 2.5Ghz Slug) -50Ohms Terminator.
> 
> As you can see i am new to this any help will be apreciated.
> 
> Sarky
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