[TowerTalk] CMC-230-5K

[Jim Thomson]

I just received a pair of  CMC-230-5K  common mode chokes...from MyAntennas.com to experiment with.
They are configured as a  line isolator, with  silver-teflon  SO-239s  on each side.  They can also be configured as
a balun, with a pair of standoffs on the balanced ant side if you like.   Extremely well designed and built, better
than I expected.   He does a beautiful job of terminating the coax.  I will try some different placement configurations,
including both in series, also in different locations. 
2-30 mhz rated, 7k - 12.2k Z...with RS slightly less, 5.4K – 11.3k   5 kw icas.
If this doesn’t do it, I give up, esp with 2 of em in series.   Rated for 40db of common mode attenuation...per  unit.
Should be 80db  for a pair of em in series.   They are heavier than I thought, and UV proof. 
This will be an interesting experiment.  If I can dump some noise on RX, I will be happy.   Stay tuned.
http://myantennas.com/wp/product/cmc-230-5k/

Jim  VE7RF