Jerry,
Can you suggest an appropriate compound ? Perhaps a source of same ? I
suppose the big suppliers have most of this stuff available.
Its not so easy to find any more - guess cause the Ham market has gotten so
small.
73 de Gary, AA2IZ
----- Original Message -----
From: "Dr. Gerald N. Johnson" <geraldj@weather.net>
To: <tentec@contesting.com>
Sent: Sunday, October 25, 2009 11:13 AM
Subject: Re: [TenTec] Omni VII: RF in TX Audio
> On Sat, 2009-10-24 at 19:59 -0600, Stephen Cannon wrote:
>> Alan,
>> I was wondering about the ferrite materials. My initial thought was to
>> use
>> 31 Material (because Material 31 is designed for HF); however, I further
>> thought that noise in other frequency ranges (other than HF) may affect
>> signals within some of the electronics. Should I just stick with 31
>> Material on HF receivers or do you have additional suggestions?
>
> You want a lossy material at the subject frequency, not one used for
> transformers at the frequency to be filtered. Typically that means a
> considerably higher permeability for the noise filter toroid than a
> transformer toroid.
>
> 73, Jerry, K0CQ
>>
>>
>> Stephen AD7TD
>
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|