Topband: [Bulk] Re: 160 GP Choke

[Tim Shoppa]

The 0.75" #75 clamp-on is 0475176451 and circa $15. By my connibulations
it'll be a really close squeeze to get 5 turns of RG-6 through there. I
think 5 turns of RG-58 could happen.

The 2.4" #31 core is 2631803802, circa $7 and much easier to get many more
turns of RG-8X through it.

Tim N3QE

On Tue, Sep 30, 2014 at 9:28 AM, Grant Saviers <grants2 at pacbell.net> wrote:

> Jim,
>
> Would the type 75 material from Fair-Rite, be a better choice for 160 & 80
> with 5 turns thru the 0.75" id clamp on?
>
> http://www.fair-rite.com/newfair/LowFreqSuppression.html
>
> your thoughts?
>
> Grant KZ1W
>
>
> On 9/29/2014 11:56 AM, Jim Brown wrote:
>
>> On Mon,9/29/2014 10:43 AM, wb6rse1 at mac.com wrote:
>>
>>> Bill -  An effective common-mode choke can be made with 17 turns of
>>> RG58-coax wound on to an Amidon FT240-31 core.
>>>
>>
>> It's not an Amidon core, it's a Fair-Rite core. It's a LOT cheaper when
>> you buy from a Fair-Rite distributor. See Appendix One of
>> k9yc.com/RFI-Ham.pdf
>>
>> 73, Jim K9YC
>>
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