In my case I inserted a bead type common mode choke at the end of the
matching stub and at the beginning of the 52 ohm coax run to the house. The
grass soon grew up over the coax and the choke, and never once did my lawn
mower chop into the coax or the choke.

-- John, N9JG

"Mike Coslo" wrote in message
36...
wrote in news:1178935164.295223.69320
@o5g2000hsb.googlegroups.com:

Can the 20m, 75ohm matching stub perform double duty as a common mode
choke?

ie: will it hurt if i wind the stub around something like 4" PVC?

Best thing to do is try it and let us know your results. I would
guess that it might have some small effect on the match. In my own case,
there really isn't a good place to put the coil near the antenna, so a
choke is better right before entering the house.

- Mike -