Well ... Using exactly the values in the filter circuit diagram, 50R transforms through the filter to 48.5 - j2.86 (Ret Loss = 30dB, VSWR = 1.07) [Using GM3SEK's original Netcalc prog.] So that
Hello Andy, Is there any point in Paul putting his dummy load on the end of his 75 odd meters of feeder co-ax outside? And then on the secondary of his matching transformer when tapped one to one? In
The plot thickens! The square wave isn't exactly symmetrical but by that calculation it makes no more than 8 watts into the dummy load without the filter! It's likely a bit more because it isn't symm
Yes Try anything and try to work out what is happening. But first of all, he needs to know what power being deliverfed into a 50 ohmsload is seemingly higher than it 'can' be. The Vdd^2/2/Rl cann
I think Chris has some really good ideas here. I did turn a test with the dummy load at the far end of the coax the other day. The amp didn't seem quite as happy as with the dummy load in the shack b
Hello N1(de)BUG, Thank you, I am flattered, but don't for one moment go thinking I actually know what I am talking about, for God's sake! I am just bouncing thoughts, after thinking what I would try,
I had a thought. I set the HP 3325B to 10V pk-pk, ran it through the scopematch into the dummy load. Scopematch showed exactly the expected voltage and indicated 50 ohms, no reactance. Next I inserte
