Re: Spectrum Analyser TR4172
I'm not sure I'd go for a Kirkby kit but lots of people seem happy with them.
I'm still confused by your VNA plot of s11 because now it looks about right for a healthy directional filter. Could it be that despite the broken connection there is still sufficient coupling capacitance there to make the broken connection act as a DC block at 2GHz? This would mean the resistors are still there at 2GHz. If so, adding the piggy 50R resistors might make it worse...
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Regards, Jeremy G0HZU
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