QRP Club

QRP Station => Builder's Corner => Topic started by: vu2nan on November 08, 2019, 04:12:16 UTC

Title: Makeshift Square Loop Antenna for a Crystal Radio
Post by: vu2nan on November 08, 2019, 04:12:16 UTC
A heavy 2 m x 2 m floor-standing wooden showcase in the shack appeared to be suitable as a frame for a crystal radio loop antenna. As luck would have it, the lone 20 km distant 612 kHz, 200 kW AM broadcast station being in the end-on position by default, there would be no need to move the unit. The counter top would make it quite convenient to sit down and carry out the testing.

The 5 turn loop was easily wound using about 42 m of ordinary hook-up wire.

The shack is relatively quite small to get a photo of the actual unit.

Here's a representation of the same.

(https://1.bp.blogspot.com/-VQ71jHxyfNU/XcFI8TUgTGI/AAAAAAAAIZQ/xoc9f8XgJ38TAZdZlkykpuKwVN3W2sCbQCPcBGAYYCw/s1600/Loop%2BAntenna.jpg)

It works quite well with my series/parallel-tuned crystal radios.

Further details at

https://nandustips.blogspot.com/2019/10/another-loop-antenna-crystal-radio.html

73,

Nandu.
Title: Re: Makeshift Square Loop Antenna for a Crystal Radio
Post by: IZ5ZCO on November 17, 2019, 17:04:36 UTC
Great idea!  ;D
Title: Re: Makeshift Square Loop Antenna for a Crystal Radio
Post by: vu2nan on November 18, 2019, 04:25:29 UTC
Many thanks, OM Nicola! :)

73,

Nandu.