UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Ferrite rod antenna and RF amp for Valve radios

Christoffrad · 9th Oct 2019, 4:35 pm

Paul
Thank you for your circuit. I note that your antenna uses a tapped single coil. The antenna I have uses two discrete windings a primary tuned winding and a isolated coupling coil.

1936
In fact I have been using a screened 50ohm cable on the output to avoid the effect you describe. I have not tried floating the primary windings so I'll give that a go.

Thanks for your comments

Chris

9th Oct 2019, 4:35 pm	#32
Christoffrad Hexode Join Date: Jun 2018 Location: Cambridge, Cambridgeshire, UK. Posts: 262	Re: Ferrite rod antenna and RF amp for Valve radios Paul Thank you for your circuit. I note that your antenna uses a tapped single coil. The antenna I have uses two discrete windings a primary tuned winding and a isolated coupling coil. 1936 In fact I have been using a screened 50ohm cable on the output to avoid the effect you describe. I have not tried floating the primary windings so I'll give that a go. Thanks for your comments Chris