10665Re: [loopantennas] Cores for Dallas Lankford antennas [1 Attachment]
- Jul 3, 2014Chris:
How many 35T0501 cores do you need? I can send a few to you, but I don't have the larger cores on hand.
The version of Dallas's J310/J271 amplifier that I sell (Z10130A) does not use 35T0501 cores. http://www.cliftonlaboratories.com/z10130a_fet_follower.htm for details.
The larger cores are used as common mode chokes in Dallas's design, and I would try DigiKey's PN 495-3857-ND as a substitute. It's an EPCOS part 34mm diameter, PN B64290L48X830 and should have similar performance to the Steward part.
If you absolutely have to have the Steward parts, and if you have a semi-plausible company name, call Steward's sales number and ask for samples.
On 7/3/2014 1:15 PM, Chris Waldrup kd4pbj@... [loopantennas] wrote:
Sorry to be slow in responding. The circuit is the dual ungrounded active flag on page 7. It calls for the Steward cores.
I checked and Steward seems to be based here in town (Chattanooga area) but they have been unresponsive to requests to purchase small quantities of their cores. The last time I checked, Digi Key didn't stock them.
Tracy City, TN