Forums

Radio hiss. Power Supply?

Started by W. eWatson April 7, 2013
I have a Sonido radio by Sangean. To listen to distant radio stations, I 
use my PC in the den, and pick up the signal from our bedroom. The 
signal is sent from the PC via a CCrane xmiter. Sometimes the signal is 
so noisy I have to put the radio on the floor flat on its back to get 
something decent. Last night I had this problem, but decided to take out 
the wall wart. Instantly, the noise went away and the program could 
easily be heard. When I listen to local stations, there is little noise. 
I suppose the wall wart as it at fault. Comments?
On Sun, 07 Apr 2013 10:03:21 -0700, "W. eWatson"
<wolftracks@invalid.com> wrote:

>I have a Sonido radio by Sangean. To listen to distant radio stations, I >use my PC in the den, and pick up the signal from our bedroom. The >signal is sent from the PC via a CCrane xmiter. Sometimes the signal is >so noisy I have to put the radio on the floor flat on its back to get >something decent. Last night I had this problem, but decided to take out >the wall wart. Instantly, the noise went away and the program could >easily be heard. When I listen to local stations, there is little noise. >I suppose the wall wart as it at fault. Comments?
Cheapy filter caps. I had the same sort of problem with my Soundbridge... fired it up on a lab supply, noise went away. Bought a new wallwart. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
On 4/7/2013 1:03 PM, W. eWatson wrote:
> I have a Sonido radio by Sangean. To listen to distant radio stations, I > use my PC in the den, and pick up the signal from our bedroom. The > signal is sent from the PC via a CCrane xmiter. Sometimes the signal is > so noisy I have to put the radio on the floor flat on its back to get > something decent. Last night I had this problem, but decided to take out > the wall wart. Instantly, the noise went away and the program could > easily be heard. When I listen to local stations, there is little noise. > I suppose the wall wart as it at fault. Comments?
Some wall warts contain cheap switch mode power supplies notorious for electrical noise. You need a better power supply. Ed