[RFI] DSL Filter Update

Cortland Richmond ka5s at earthlink.net
Sat Mar 7 18:24:22 PST 2009

Hi, Larrry.

I'd hang a couple of 180 degree hybrids on there and sweep 'em.  100 ohms
is probably close enough.  I have a purpose-built North Hills center tapped
transfomer for UTP DSL measurements, but only one of those.   


> [Original Message]
> From: Larry Benko <xxw0qe at comcast.net>
> I have designed many devices in the T1/E1/DSL arena.  The line impedance 
> for lines (without bridged taps) was always 110 to 120 ohms.  The slight 

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