that is why the Top Ten AB antenna switches use two relays to gain isolation...
bill
At 02:04 PM 7/17/2008, Jim Brown wrote:
On Wed, 16 Jul 2008 21:15:14 -0700, Ron D'Eau Claire wrote:
>In this case Eric is saying there may be a leakage path through a relay.
Right. Almost all problems have more than one component. In problems like
this one, the sum is the algebraic sum of all of the leakage paths.
Relays DO have capacitively coupled leakage. I think I'm hearing numbers
on the order of -60 dB, which is pretty respectable for an antenna relay
or switch. I've measured numbers on the order of -50 - -55 with the Alpha
Delta switches.
73,
Jim K9YC
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