Home |
Search |
Today's Posts |
|
#1
|
|||
|
|||
New (to me) radio...and NOISE.
On 03/19/2011 02:02 AM, m II wrote:
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I found a very modestly priced Sony 2010 yesterday (FCC IDAK896AICF-2010) and am pretty happy with it, except for one thing. It uses THREE size D batteries. Two or four I don't mind, but where do you find a charger that handles three batteries at a time? It's a pain having to buy four and then rotate them in sequence. Small problem in the general scheme of things. I don't know if there is a serial number hidden somewhere on the thing, I'd like to find out when in the production run it was made. The sound is very good for a set this size and the 'sync' actually works, unlike the 7600 I tried a few years ago. That radio made me buy a Sangean 909. The noise that's been plaguing me for weeks turns out to be the solar panel battery charger/regulator. It's worse than any dimmer or fluorescent light I've ever heard. The unit is an Outback 60 amp mppt. I don't imagine there's an easy way to stop the noise. Night time miraculously clears things up. mike Clamp on ferrites on all wires in and out of the inverter. The model 80 on the page are Fair-Rite brand. Loop skinny wires through twice: http://www.allelectronics.com/make-a...errites/1.html |
#2
|
|||
|
|||
New (to me) radio...and NOISE.
On Mar 19, 5:05*am, dave wrote:
On 03/19/2011 02:02 AM, m II wrote: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I found a very modestly priced Sony 2010 yesterday (FCC IDAK896AICF-2010) and am pretty happy with it, except for one thing. It uses THREE size D batteries. Two or four I don't mind, but where do you find a charger that handles three batteries at a time? It's a pain having to buy four and then rotate them in sequence. Small problem in the general scheme of things. I don't know if there is a serial number hidden somewhere on the thing, I'd like to find out when in the production run it was made. The sound is very good for a set this size and the 'sync' actually works, unlike the 7600 I tried a few years ago. That radio made me buy a Sangean 909. The noise that's been plaguing me for weeks turns out to be the solar panel battery charger/regulator. It's worse than any dimmer or fluorescent light I've ever heard. The unit is an Outback 60 amp mppt. I don't imagine there's an easy way to stop the noise. Night time miraculously clears things up. mike Clamp on ferrites on all wires in and out of the inverter. The model 80 on the page are Fair-Rite brand. Loop skinny wires through twice: http://www.allelectronics.com/make-a...errites/1.html That should do some good; and usually the more you use the more effective they collectively become. If you can/have access to both ends of the Wires : { Place a Ferrite Bead [FB] on Each End of Each Wire} Solar Panel [FB] =Wires-to= [FB] Outback Outback [FB] =Wires-to= [FB] Batteries Outback [FB] =Wires-to= [FB House If you have one or more of the Remote Output Monitors for the Outback : Then Put a Ferrite Bead on each end of the Data Cable(s) too. hope this helps ~ RHF |
#3
|
|||
|
|||
New (to me) radio...and NOISE.
On 3/19/2011 7:11 AM, RHF wrote:
That should do some good; and usually the more you use the more effective they collectively become. If you can/have access to both ends of the Wires : { Place a Ferrite Bead [FB] on Each End of Each Wire} Solar Panel [FB] =Wires-to= [FB] Outback Outback [FB] =Wires-to= [FB] Batteries Outback [FB] =Wires-to= [FB House The chokes should go as close to the noise source as possible. They do zero good at the other end. |
#4
|
|||
|
|||
New (to me) radio...and NOISE.
On Mar 19, 11:53*am, dave wrote:
On 3/19/2011 7:11 AM, RHF wrote: That should do some good; and usually the more you use the more effective they collectively become. If you can/have access to both ends of the Wires : { Place a Ferrite Bead [FB] on Each End of Each Wire} Solar Panel [FB] =Wires-to= [FB] Outback Outback [FB] =Wires-to= [FB] Batteries Outback [FB] =Wires-to= [FB House The chokes should go as close to the noise source as possible. They do zero good at the other end. Dave -with-all-due-respect- Unless {Specifically} You Know The RFI Noise Source : Every Thing Is The Potential [Unknown] Source : Therefore Treat Every Thing As The Source Install FBs on Unit "A" -now- Unit "A" with a FB's on the Wire within an Inch or two from it is Protected. Those FBs acting as an RFI Shunts for Unit "A". However [But] the 25 Feet of Wire(s) going from Unit "A" to Unit "B" are a 'potential' Antenna. This Antenna may Pick-Up the RFI being Radiated from Unit "A" an inject the RFI back into Unit "B" and now Unit "B" passes that Noise around the rest of the System. Now install FBs on Unit "B" -now- Unit "B" with a FB's on the Wire within an Inch or two from it is Protected. Those FBs acting as an RFI Shunts for Unit "B". Oops there is also a 25 Feet of Wire(s) going from Unit "B" to Unit "C" are a 'potential' Antenna. the process of elimination continues ~ RHF I have small slide-on FB's on all the Wires on the Solar Array of now 88 Panels : The Contractors said it was not necessary & I Said Do It. I have Clamp-On FBs at the Service Feed Box at the base of the Solar Array. I have Clamp-On FBs at the Service Entry Box at the Controller / Regulators / Inverters. I have Clamp-On FBs at the Enclosure for the Batteries about 3-Inches from each Battery. Except for the 200KW Generator at the Corner of the Pond going 'On' and the snap-crackle-pop of a string of Power Grid Towers about a 1/4 Mile Away {Lions Dam to the Valley} I get an S-Meter "0" on many bands between RF Signals. and I Run 100 Foot+ SWL Antennas. I Am One Old Believer In "FB"s Everywhere : Especially When Wire Runs Get Longer than 6~8 Feet- iane ~ RHF |
#5
|
|||
|
|||
New (to me) radio...and NOISE.
On Mar 19, 5:34*pm, RHF wrote:
On Mar 19, 11:53*am, dave wrote: On 3/19/2011 7:11 AM, RHF wrote: That should do some good; and usually the more you use the more effective they collectively become. If you can/have access to both ends of the Wires : { Place a Ferrite Bead [FB] on Each End of Each Wire} Solar Panel [FB] =Wires-to= [FB] Outback Outback [FB] =Wires-to= [FB] Batteries Outback [FB] =Wires-to= [FB House The chokes should go as close to the noise source as possible. They do zero good at the other end. Dave -with-all-due-respect- Unless {Specifically} You Know The RFI Noise Source : Every Thing Is The Potential [Unknown] Source : Therefore Treat Every Thing As The Source Install FBs on Unit "A" -now- Unit "A" with a FB's on the Wire within an Inch or two from it is Protected. Those FBs acting as an RFI Shunts for Unit "A". However [But] the 25 Feet of Wire(s) going from Unit "A" to Unit "B" are a 'potential' Antenna. *This Antenna may Pick-Up the RFI being Radiated from Unit "A" an inject the RFI back into Unit "B" and now Unit "B" passes that Noise around the rest of the System. Now install FBs on Unit "B" -now- Unit "B" with a FB's on the Wire within an Inch or two from it is Protected. Those FBs acting as an RFI Shunts for Unit "B". Oops there is also a 25 Feet of Wire(s) going from Unit "B" to Unit "C" are a 'potential' Antenna. the process of elimination continues ~ RHF I have small slide-on FB's on all the Wires on the Solar Array of now 88 Panels : The Contractors said it was not necessary & I Said Do It. I have Clamp-On FBs at the Service Feed Box at the base of the Solar Array. I have Clamp-On FBs at the Service Entry Box at the Controller / Regulators / Inverters. I have Clamp-On FBs at the Enclosure for the Batteries about 3-Inches from each Battery. Except for the 200KW Generator at the Corner of the Pond going 'On' and the snap-crackle-pop of a string of Power Grid Towers about a 1/4 Mile Away {Lions Dam to the Valley} I get an S-Meter "0" on many bands between RF Signals. and I Run 100 Foot+ SWL Antennas. I Am One Old Believer In "FB"s Everywhere : Especially When Wire Runs Get Longer than 6~8 Feet- iane ~ RHF *. *. Who's generator is it ? A local hospital/hotel/FD ? Sounds a little heavy for a household back-up thingy ! |
#6
|
|||
|
|||
New (to me) radio...and NOISE.
On Mar 19, 10:38*pm, wrote:
On Mar 19, 5:34*pm, RHF wrote: On Mar 19, 11:53*am, dave wrote: On 3/19/2011 7:11 AM, RHF wrote: That should do some good; and usually the more you use the more effective they collectively become. If you can/have access to both ends of the Wires : { Place a Ferrite Bead [FB] on Each End of Each Wire} Solar Panel [FB] =Wires-to= [FB] Outback Outback [FB] =Wires-to= [FB] Batteries Outback [FB] =Wires-to= [FB House The chokes should go as close to the noise source as possible. They do zero good at the other end. Dave -with-all-due-respect- Unless {Specifically} You Know The RFI Noise Source : Every Thing Is The Potential [Unknown] Source : Therefore Treat Every Thing As The Source Install FBs on Unit "A" -now- Unit "A" with a FB's on the Wire within an Inch or two from it is Protected. Those FBs acting as an RFI Shunts for Unit "A". However [But] the 25 Feet of Wire(s) going from Unit "A" to Unit "B" are a 'potential' Antenna. *This Antenna may Pick-Up the RFI being Radiated from Unit "A" an inject the RFI back into Unit "B" and now Unit "B" passes that Noise around the rest of the System. Now install FBs on Unit "B" -now- Unit "B" with a FB's on the Wire within an Inch or two from it is Protected. Those FBs acting as an RFI Shunts for Unit "B". Oops there is also a 25 Feet of Wire(s) going from Unit "B" to Unit "C" are a 'potential' Antenna. the process of elimination continues ~ RHF I have small slide-on FB's on all the Wires on the Solar Array of now 88 Panels : The Contractors said it was not necessary & I Said Do It. I have Clamp-On FBs at the Service Feed Box at the base of the Solar Array. I have Clamp-On FBs at the Service Entry Box at the Controller / Regulators / Inverters. I have Clamp-On FBs at the Enclosure for the Batteries about 3-Inches from each Battery. Except for the 200KW Generator at the Corner of the Pond going 'On' and the snap-crackle-pop of a string of Power Grid Towers about a 1/4 Mile Away {Lions Dam to the Valley} I get an S-Meter "0" on many bands between RF Signals. and I Run 100 Foot+ SWL Antennas. I Am One Old Believer In "FB"s Everywhere : Especially When Wire Runs Get Longer than 6~8 Feet- iane ~ RHF *. *. Who's generator is it ? A local hospital/hotel/FD ? *Sounds a little heavy for a household back-up thingy *! Mike [M II] only presented a Half-Truth from this Post : "My One Big Problem During a 'Local' Power Outage is that the Local Water Company has a Kohler 200 KW Back-Up Electrical Generator at the Corner of the Pond with in 100 Yards of the House." http://groups.google.com/group/rec.r...bcf0bc4ff6eac2 It's the Water Company's Generator and it within 100 Yards of the House. yes - it is that simple ~ RHF |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Radio noise | Homebrew | |||
Radio noise | Homebrew | |||
WTB: HP/Agilent 346A (or B) Noise Source for HP 8970A Noise Figure Meter | Homebrew | |||
Automatic RF noise cancellation and audio noise measurement | Antenna | |||
Automatic RF noise cancellation and audio noise measurement | Homebrew |