[TowerTalk] CMC-230-5K

[Chuck Dietz]

I read: "Two cascaded chokes (2) on four (4) large 2.4″ (61mm) Ferrite
cores" at:  http://myantennas.com/wp/product/cmc-230-5k/
I don't see but two either, however, I assume there are two stacks of two...

Chuck W5PR

On Tue, Apr 19, 2016 at 9:54 AM, Bob K6UJ <k6uj at pacbell.net> wrote:

> 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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>>
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