Re: Power Source


vincent
 

On 5/20/2012 3:43 PM, MIKE DURKIN wrote:
 

Depends on how low the local noise floor is ....

If the noise floor goes up alot when the antenna is plugged in ... then no, but if it goes up a little - like 6db, then I would run the SDR off of batteries to see if the noise floor drops with the antenna disconnected....

Your just looking for what your noise floor is and if its bad, what's causing it.

Could be a broadband router giving hash .... wall warts .... etc.

If the noise floor goes up 30db ( like mine ) when the antenna is plugged in ... then the only way ( mostly) to bring the noise floor down is to put up an antenna that receives less local noise ... like a horizontal loop or dipole....

Mike KC7NOA

-----Original Message-----

From: altechtogo@...
Sent: 20 May 2012 19:59:42 GMT
To: sdr-radio-com@...
Subject: Re: [sdr-radio-com] Power Source

 

On 5/20/2012 12:57 PM, MIKE DURKIN wrote:

 

No .... its the plasma Tv that's radiated all the trash. I have the same problem.

-----Original Message-----

From: vince48b
Sent: 20 May 2012 19:36:25 GMT
To: sdr-radio-com@...
Subject: [sdr-radio-com] Power Source

 

Greetings,
I seriously contemplating in purchasing a Acopian A5MT1200 power supply. Question, do you think it is worth switching out the unit that came with my NetSDR? I suffer from the usual electrical noises, mainly from my plasma TV. Anyone that has one of these units are that has switch from the original power supply with good results, please let me know. TIA.

vince48

Thanks, besides the plasma noise, is it worth the expense in your opinion?
Yes, looks like I do not need the power supply. unplugged it is -130dbm, antenna plugged in goes up to -115dbm. Thanks for the help.

Vincent

Join main@SDR-Radio.groups.io to automatically receive all group messages.