[Lowfer] Isolation transformer, Computer noise, etc.

[Mike.WE0H]

I'd guess a -43 core for the HF bands. -61 might work also. Mini Ring 
Core Calculator will tell you the frequency range for broadband 
transformers for different ferrite materials. A guy should be safe 
trying that.

Mike
WE0H



Paul D wrote:
> I agree . While I dont have much noise here my neighbor AF5M about 
> 1mile away as the crow flies has terrible noise. Paul is a DXer and is 
> very much bothered by it. Some of the ideas in this thread may help 
> him, and possibly improve my rec on lowfer.. 
> 
> I wonder what sort of core to use on the HF bands , particularly 160 
> meters. I have two Q meters so inductance and reactance measurements 
> are no problem. 
> 
> Paul K5wms