[TowerTalk] CMC-230-5K

[Bob K6UJ]

Jim,

Very well built.  I am curious about one thing.  Their write up states 
that this unit
uses 4  cascaded ferrite cores.  In the picture I can only see 2.
Thanks for sharing !


Bob
K6UJ



On 4/19/16 3:30 AM, Jim Thomson wrote:
> 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
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