is this good placement of a radio "antenna"

[themctipers]

So I'm trying to receive better reception on all radio channels FM and AM locally and shortwave (2.3-22mhz) channels better. Is this a good "antenna" placement? I use quotes because it's just a long piece of speaker cable. 

[Stefan1024]

optimal length ~wavelength / 4 (or multiple of that)

-> 3.75 meter (for 12 MHz) cable should be fine

[themctipers]

Just now, Stefan1024 said:

optimal length ~wavelength / 4 (or multiple of that)

-> 3.75 meter (for 12 MHz) cable should be fine

Ya but I'm also using this radio to receive FM channels too. Is there like a jack of all trades meter length for it to work for most channels? The fm frequencys are 92.5-104.5, am is 1430 and for shortwave I don't know; I have to search for them tonight. 

[Stefan1024]

1 minute ago, themctipers said:

Ya but I'm also using this radio to receive FM channels too. Is there like a jack of all trades meter length for it to work for most channels? The fm frequencys are 92.5-104.5, am is 1430 and for shortwave I don't know; I have to search for them tonight. 

Ypu should match the antenna for the lowest frequency. The upper once will run in a higher mode and should also work. But you may have to test different lengths to fine the best compromize.