TopBand: Beverage baluns/transformers de W0AH

[Phil Clements]

At 08:40 AM 11/6/97 -0500, you wrote:
>	Hi, Phil.  Quick question re core mix...  For some reason, I
>thought that the mix basically defined the top frequency end, to avoid
>hysteresis loss, and the LF end wasn't affected much by mix.  Don't have
>my ref materials here at work, so cannot find info.  Your inputs, pls...
>73- George, W4BUW

Hi George,

Amidon offers nine mixes for powdered iron:

Mix 26........ D.C. to 1.omhz
Mix 3......... .05-.5 mhz
Mix 15........ .1-2.0 mhz
Mix 1......... .5-5 mhz
Mix 2......... 1-30 mhz
Mix 6......... 3-50 mhz
Mix 10......., 5-100 mhz
Mix 12/17..... 20-200 mhz
Mix 0......... 50-300 mhz

For ferrite, there are 10 mixes:

Mix 43........  .01-1 mhz
Mix 61........  .2-10 mhz
Mix 63........  15-25 mhz
Mix 67........  10-80 mhz
Mix 68........  80-180 mhz
Mix 72........  .001-1.0 mhz
Mix 75........  .2-15 mhz
Mix 77........  .001-1 mhz
Mix F.........  .001-1.0 mhz
Mix J.........  .001-1 mhz


(((73)))
Phil, K5PC



--
FAQ on WWW:               http://www.contesting.com/topband.html
Submissions:              topband@contesting.com
Administrative requests:  topband-REQUEST@contesting.com
Problems:                 owner-topband@contesting.com