<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div style="RIGHT: auto">Hi All,</div>
<div style="RIGHT: auto">Phil I would think Maximo, EA1DDO has found a nice interface with plenty of isolation. I have a simple one on a single core plus a resistor that does about 25dB isolation over HF. Also I would think it a good idea to put a 3dB or 6dB pad on the RF source port to force the source Z to 50 ohms. I built mine from the ARRL Solid State Handbook. It is a hybrid splitter which is a return loss bridge. QEX had one with 3 cores a few years ago. I had a couple emails with author on how to modify the layout to reduce lead lengths by stacking the cores. </div>
<div style="RIGHT: auto">I could not open the link Phil provided. Frank WA1GFZ<VAR id=yui-ie-cursor></VAR></div></div></body></html>