Date   

Re: [SDRSharp] TV signal viewing?

Joe M.
 

Realistically, how many people are using that configuration?

But, the driver swap method works no matter how far away
the PC is as long as you have a means to control the PC.

Joe M.

jdow wrote:

Computer is in a different room. And the dongle is at the end of a 16'
cable as far away from the computer as possible. (I plan to extend that
distance in the future given that the dongles really don't need maximum
performance on the USB link.)
{^_^}
On 2013/08/25 03:57, siegfried jackstien wrote:
But you are sitting close to your pc ... why you have to walk to another
room when changing the usb port??? I sit in front of the pc and plugging in
in a different usb port is easy (no need to walk to next room) ... even if I
had the stick in the attic (with a very long cable) I would not need to walk
to the attic when I wanna use a different port ... plug and pray

My windows "remembers" on what port I installed the zadig drivers and on
what port not ... so ... when using the port where the driver...bla bla ...
you know what I wanna say...

I even can use the original soft AND sdrsharp "together" when using 2
dongles and 2 usb ports (one with changed driver and the other with the
original driver) ...

But for that my pc is somewhat slow :-) (... it works with some dropouts)

Dg9bfc

Sigi


-----Urspr�ngliche Nachricht-----
Von: SDRSharp@... [mailto:SDRSharp@...] Im
Auftrag von jdow
Gesendet: Samstag, 24. August 2013 21:44
An: SDRSharp@...
Betreff: Re: AW: [SDRSharp] TV signal viewing?



Even that is annoying when the dongle is in another room to get it away
from the computer noise. And on Win 7 all I need to do is plug in the
dongle anywhere and it is found and speaks to rtlsdr.dll automagically.

{^_^}

On 2013/08/24 07:32, siegfried jackstien wrote:
Switching back and forth is annoying.

{^_^}
Here switching back and forth just takes using another (different) usb
port
Plug and pray :-)

Dg9bfc

Sigi




------------------------------------

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------------------------------------

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------------------------------------
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------------------------------------------------------------------------
No virus found in this incoming message.
Checked by AVG - www.avg.com Version: 9.0.932 / Virus Database: 3211.1.1/6107 - Release Date: 08/25/13 13:34:00


Re: [SDRSharp] Re: Overcoming local noise.

s.lloydhughes@btopenworld.com
 

Do a bit of investigation first . Have a look at the RSGB and ARRL websites. Then contact the manufacturer and Ofcom if appropriate.  But make sure your house is in order first.  You have the appropriate antennas and equipment connected up correctly with the aproved coax etc.  Unfortunately many issues investigated are due to faulty and poorly installed equipment. 

You may also find that your Eton G3 receiver is much more sensitve and is suffering from overload.  If it has a DX local switch see if that has an effect.  If switching to local has a marked affect the receiver is overloading.  If you can run it on batteries you can use it for tracing noise sources.  As many are 'common mode' running up the outer of connecting cables. I use an Eton E5, which is simillar but without the Airband and RDS,  It is great for finding noise sources. But also a good portable receiver.  Sometimes a bit noisy in its own right.  The line out is good to feed into a pc for data mode decoding.  With the whip antenna fully closed.  The internal ferrite rod antenna is good up to 4 MHz and has directional properties. Which may help you.

It has the facility for an external antenna.  Which you could feed via an ATU ( antenna tuning unit).  This will give the receiver a more controlled signal input.  With the antenna mounted far away from interfering noise sources.

Something to remember.  If you double the distance from a radiating transmitting/interference source you quarter the field strength at the antenna of your receiver.

I hope this helps.

From: jdow To: SDRSharp@...
Sent: Sunday, 25 August 2013, 22:31
Subject: Re: [SDRSharp] Re: Overcoming local noise.

Sometimes ferrite beads are your best friend. BIG ferrite beads are
needed on HF. Wrap power cords through them two to four times if you
can. Break up every long cable in the building with ferrite if needed.

You might also contact the "freeview dvb" people about the EMI they
create. It may be illegal in your venue, which might lead to some
interesting scandals.

{^_^}


On 2013/08/25 02:33, Philip Jones wrote:
>
>
> though I haven't noticed it on sdr my freeview dvb box obliterated the low to
> mid hf bands on my Eton g3 reciever I have only got 2 sockets in my room so I
> have to use extension cables to run everything which adds to the noise


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Re: [SDRSharp] TV signal viewing?

josephrot
 

Joanne...those that have tested, used or tried to, with the recommended 16' USB cable, and with the 30 to 50 foot USB-with-repeater/extender modules, will advise that SDR and related or other performance can suffer some when extended past the "usual" 16' recommendation, and potentially suffers far more than one might expect the usual 30 to 50 ft USB-with-repeater/extender.

Mileage varies with the type of signals and data-train speeds one is pumping through the extended USB cables at the time, and although the effects are less with USB 2, they can magnify with USB 3.

Test always before committing to the extenders with one's critical data.

Joe

--- In SDRSharp@..., jdow <jdow@...> wrote:

Computer is in a different room. And the dongle is at the end of a 16'
cable as far away from the computer as possible. (I plan to extend that
distance in the future given that the dongles really don't need maximum
performance on the USB link.)

{^_^}

On 2013/08/25 03:57, siegfried jackstien wrote:
But you are sitting close to your pc ... why you have to walk to another
room when changing the usb port??? I sit in front of the pc and plugging in
in a different usb port is easy (no need to walk to next room) ... even if I
had the stick in the attic (with a very long cable) I would not need to walk
to the attic when I wanna use a different port ... plug and pray

My windows "remembers" on what port I installed the zadig drivers and on
what port not ... so ... when using the port where the driver...bla bla ...
you know what I wanna say...

I even can use the original soft AND sdrsharp "together" when using 2
dongles and 2 usb ports (one with changed driver and the other with the
original driver) ...

But for that my pc is somewhat slow :-) (... it works with some dropouts)

Dg9bfc

Sigi


-----Ursprüngliche Nachricht-----
Von: SDRSharp@... [mailto:SDRSharp@...] Im
Auftrag von jdow
Gesendet: Samstag, 24. August 2013 21:44
An: SDRSharp@...
Betreff: Re: AW: [SDRSharp] TV signal viewing?



Even that is annoying when the dongle is in another room to get it away
from the computer noise. And on Win 7 all I need to do is plug in the
dongle anywhere and it is found and speaks to rtlsdr.dll automagically.

{^_^}

On 2013/08/24 07:32, siegfried jackstien wrote:

Switching back and forth is annoying.

{^_^}
Here switching back and forth just takes using another (different) usb
port

Plug and pray :-)

Dg9bfc

Sigi




------------------------------------

Yahoo! Groups Links





------------------------------------

Yahoo! Groups Links




Re: TV software - Which one?

Paul NN4F
 

I certainly wouldn't want your clients, and I do know windows very well, with several Microsoft Certifications, Cisco Certifications, and several degrees in the computer field, please provide your said knowledge base articles numbers??

--- In SDRSharp@..., "josephrot" <joerotello@...> wrote:

Then you will never see any of our clients asking you to test or service their Windows computers.

The previous recommendation is not only common-sense, it is taken directly from my notes as a Windows operations and OS consultant since 1984, and has been admitted to database, approved and used by Microsoft staff in the Knowledge-base.

Apparently, you may congratulate yourself -- you know more than we and they do, and must have the consultative and OS history to prove it.

Joe

--- In SDRSharp@..., "paulnn4f" <paul@> wrote:

Joe Rot, Worst advise EVER, Joe M is correct......you can leave them on and disabled and you can plug and play as much as you like....show me where it says there is a limit to how many times you can and can't....

--- In SDRSharp@..., "josephrot" <joerotello@> wrote:

Presuming Windows OS, you can do that just so much in Win 7 and Win 8, and should not in Win XP.

To transgress the limits, the end-user pays for it in a sometimes hopelessly corrupted OS installation.

When done doing the above as a driver test(s), then delete the unneeded drivers from the OS is the best policy...not to just leave them there, installed but not enabled, etc.

Joe

--- In SDRSharp@..., MCH <mch@> wrote:

You can also just install one driver, then disable it and install the
second one, then enable which one you want to use in the Device Manager.

Joe M.

EB4APL wrote:


Akos,

Didn't you got a CD with your dongle? The drivers and the TV software is
on it.
But probably you can't use the dongle for SDR and DVB-T on the same
computer, since the programs need different drivers. Some folks on this
list have had success installing the DVB drivers using a different USB
port that Zadig used for SDR, but it depends of your computer and OS and
the exact reason is not clear. I could not do it when tried that on 3
different computers.

Regards,
Ignacio EB4APL


On 25/08/2013 18:34, Akos Czermann wrote:

Hi,

Thanks for the reply. I'm looking for DVB-T software specifically as
in Ireland we have freeview. So which software shall I get? I'd
greatly appreciate a link or pointers, more precisely my other half
would, as she is not so content watching spikes and a waterfall
display as I am :-)
Thanks in advance,

Akos

PS. I use 75 ppm frequency correction, seems to work well.





------------------------------------------------------------------------


No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 9.0.932 / Virus Database: 3211.1.1/6106 - Release Date: 08/25/13 02:15:00


Re: TV software - Which one?

josephrot
 

Then you will never see any of our clients asking you to test or service their Windows computers.

The previous recommendation is not only common-sense, it is taken directly from my notes as a Windows operations and OS consultant since 1984, and has been admitted to database, approved and used by Microsoft staff in the Knowledge-base.

Apparently, you may congratulate yourself -- you know more than we and they do, and must have the consultative and OS history to prove it.

Joe

--- In SDRSharp@..., "paulnn4f" <paul@...> wrote:

Joe Rot, Worst advise EVER, Joe M is correct......you can leave them on and disabled and you can plug and play as much as you like....show me where it says there is a limit to how many times you can and can't....

--- In SDRSharp@..., "josephrot" <joerotello@> wrote:

Presuming Windows OS, you can do that just so much in Win 7 and Win 8, and should not in Win XP.

To transgress the limits, the end-user pays for it in a sometimes hopelessly corrupted OS installation.

When done doing the above as a driver test(s), then delete the unneeded drivers from the OS is the best policy...not to just leave them there, installed but not enabled, etc.

Joe

--- In SDRSharp@..., MCH <mch@> wrote:

You can also just install one driver, then disable it and install the
second one, then enable which one you want to use in the Device Manager.

Joe M.

EB4APL wrote:


Akos,

Didn't you got a CD with your dongle? The drivers and the TV software is
on it.
But probably you can't use the dongle for SDR and DVB-T on the same
computer, since the programs need different drivers. Some folks on this
list have had success installing the DVB drivers using a different USB
port that Zadig used for SDR, but it depends of your computer and OS and
the exact reason is not clear. I could not do it when tried that on 3
different computers.

Regards,
Ignacio EB4APL


On 25/08/2013 18:34, Akos Czermann wrote:

Hi,

Thanks for the reply. I'm looking for DVB-T software specifically as
in Ireland we have freeview. So which software shall I get? I'd
greatly appreciate a link or pointers, more precisely my other half
would, as she is not so content watching spikes and a waterfall
display as I am :-)
Thanks in advance,

Akos

PS. I use 75 ppm frequency correction, seems to work well.





------------------------------------------------------------------------


No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 9.0.932 / Virus Database: 3211.1.1/6106 - Release Date: 08/25/13 02:15:00


Re: [SDRSharp] Re: TV signal viewing?

jdow <jdow@...>
 

Do remember that at my age nearly everybody looks young with bodies that
have barely been lived in.

{^_-}

On 2013/08/25 04:04, siegfried jackstien wrote:
HA HA .... thanks for the flowers :-)

Nice compliment

Dg9bfc

Sigi


-----Urspr�ngliche Nachricht-----
Von: SDRSharp@... [mailto:SDRSharp@...] Im
Auftrag von jdow
Gesendet: Samstag, 24. August 2013 21:46
An: SDRSharp@...
Betreff: Re: [SDRSharp] Re: TV signal viewing?



Near Bremen. And he's not bad looking in a youngish sort of way.

{^_-}

On 2013/08/24 08:29, josephrot wrote:
Thank you for the information, but where is "here", location wise ?

Joe

--- In SDRSharp@... <mailto:SDRSharp%40yahoogroups.co.uk>
, "siegfried jackstien" <siegfried.jackstien@...> wrote:


Switching back and forth is annoying.

{^_^}
Here switching back and forth just takes using another (different) usb
port

Plug and pray :-)

Dg9bfc

Sigi



------------------------------------

Yahoo! Groups Links




Re: [SDRSharp] TV signal viewing?

jdow <jdow@...>
 

Computer is in a different room. And the dongle is at the end of a 16'
cable as far away from the computer as possible. (I plan to extend that
distance in the future given that the dongles really don't need maximum
performance on the USB link.)

{^_^}

On 2013/08/25 03:57, siegfried jackstien wrote:
But you are sitting close to your pc ... why you have to walk to another
room when changing the usb port??? I sit in front of the pc and plugging in
in a different usb port is easy (no need to walk to next room) ... even if I
had the stick in the attic (with a very long cable) I would not need to walk
to the attic when I wanna use a different port ... plug and pray

My windows "remembers" on what port I installed the zadig drivers and on
what port not ... so ... when using the port where the driver...bla bla ...
you know what I wanna say...

I even can use the original soft AND sdrsharp "together" when using 2
dongles and 2 usb ports (one with changed driver and the other with the
original driver) ...

But for that my pc is somewhat slow :-) (... it works with some dropouts)

Dg9bfc

Sigi


-----Urspr�ngliche Nachricht-----
Von: SDRSharp@... [mailto:SDRSharp@...] Im
Auftrag von jdow
Gesendet: Samstag, 24. August 2013 21:44
An: SDRSharp@...
Betreff: Re: AW: [SDRSharp] TV signal viewing?



Even that is annoying when the dongle is in another room to get it away
from the computer noise. And on Win 7 all I need to do is plug in the
dongle anywhere and it is found and speaks to rtlsdr.dll automagically.

{^_^}

On 2013/08/24 07:32, siegfried jackstien wrote:

Switching back and forth is annoying.

{^_^}
Here switching back and forth just takes using another (different) usb
port

Plug and pray :-)

Dg9bfc

Sigi




------------------------------------

Yahoo! Groups Links





------------------------------------

Yahoo! Groups Links




Re: TV software - Which one?

Paul NN4F
 

Joe Rot, Worst advise EVER, Joe M is correct......you can leave them on and disabled and you can plug and play as much as you like....show me where it says there is a limit to how many times you can and can't....

--- In SDRSharp@..., "josephrot" <joerotello@...> wrote:

Presuming Windows OS, you can do that just so much in Win 7 and Win 8, and should not in Win XP.

To transgress the limits, the end-user pays for it in a sometimes hopelessly corrupted OS installation.

When done doing the above as a driver test(s), then delete the unneeded drivers from the OS is the best policy...not to just leave them there, installed but not enabled, etc.

Joe

--- In SDRSharp@..., MCH <mch@> wrote:

You can also just install one driver, then disable it and install the
second one, then enable which one you want to use in the Device Manager.

Joe M.

EB4APL wrote:


Akos,

Didn't you got a CD with your dongle? The drivers and the TV software is
on it.
But probably you can't use the dongle for SDR and DVB-T on the same
computer, since the programs need different drivers. Some folks on this
list have had success installing the DVB drivers using a different USB
port that Zadig used for SDR, but it depends of your computer and OS and
the exact reason is not clear. I could not do it when tried that on 3
different computers.

Regards,
Ignacio EB4APL


On 25/08/2013 18:34, Akos Czermann wrote:

Hi,

Thanks for the reply. I'm looking for DVB-T software specifically as
in Ireland we have freeview. So which software shall I get? I'd
greatly appreciate a link or pointers, more precisely my other half
would, as she is not so content watching spikes and a waterfall
display as I am :-)
Thanks in advance,

Akos

PS. I use 75 ppm frequency correction, seems to work well.





------------------------------------------------------------------------


No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 9.0.932 / Virus Database: 3211.1.1/6106 - Release Date: 08/25/13 02:15:00


Re: [SDRSharp] Re: Overcoming local noise.

jdow <jdow@...>
 

Sometimes ferrite beads are your best friend. BIG ferrite beads are
needed on HF. Wrap power cords through them two to four times if you
can. Break up every long cable in the building with ferrite if needed.

You might also contact the "freeview dvb" people about the EMI they
create. It may be illegal in your venue, which might lead to some
interesting scandals.

{^_^}

On 2013/08/25 02:33, Philip Jones wrote:


though I haven't noticed it on sdr my freeview dvb box obliterated the low to
mid hf bands on my Eton g3 reciever I have only got 2 sockets in my room so I
have to use extension cables to run everything which adds to the noise


Re: [SDRSharp] Re: TV software - Which one?

Siegfried Jackstien
 

My e4k dongles came with presto pvr (fm, dab, dvbt)

My r820t dongles wit "blaze video" (iirr)

But I only installed the new driver (original) for the r820t and still use
presto pvr for dvbt, dab fm locals

Dg9bfc

Sigi

-----Ursprüngliche Nachricht-----
Von: SDRSharp@... [mailto:SDRSharp@...] Im
Auftrag von Akos Czermann
Gesendet: Sonntag, 25. August 2013 16:34
An: SDRSharp@...
Betreff: [SDRSharp] Re: TV software - Which one?



Hi,

Thanks for the reply. I'm looking for DVB-T software specifically as in
Ireland we have freeview. So which software shall I get? I'd greatly
appreciate a link or pointers, more precisely my other half would, as she
is not so content watching spikes and a waterfall display as I am :-)
Thanks in advance,

Akos

PS. I use 75 ppm frequency correction, seems to work well.


Re: Overcoming local noise.

josephrot
 

One of many reasons to take a look at JameCo, DigiKey and similar providers/distributors, and at their transformer/linear AC adapters and other power units.

SDR's and related circuits are like any sensitive receiver/transceiver hardware; switching power supplies/AC adapters are to be roundly avoided, unless proven almost overwhelmingly well filtered on the incoming AC line and outgoing DC line.

Joe

--- In SDRSharp@..., "don_wa5ngp" <m240zz@...> wrote:

Unfortunately, many of these power supplies do not receive any testing to see if they meet Class A or B (USA) or EU equiv standards. So they are actually illegal but of course there are bigger fish to fry than these guys.

Don


Re: TV software - Which one?

josephrot
 

Presuming Windows OS, you can do that just so much in Win 7 and Win 8, and should not in Win XP.

To transgress the limits, the end-user pays for it in a sometimes hopelessly corrupted OS installation.

When done doing the above as a driver test(s), then delete the unneeded drivers from the OS is the best policy...not to just leave them there, installed but not enabled, etc.

Joe

--- In SDRSharp@..., MCH <mch@...> wrote:

You can also just install one driver, then disable it and install the
second one, then enable which one you want to use in the Device Manager.

Joe M.

EB4APL wrote:


Akos,

Didn't you got a CD with your dongle? The drivers and the TV software is
on it.
But probably you can't use the dongle for SDR and DVB-T on the same
computer, since the programs need different drivers. Some folks on this
list have had success installing the DVB drivers using a different USB
port that Zadig used for SDR, but it depends of your computer and OS and
the exact reason is not clear. I could not do it when tried that on 3
different computers.

Regards,
Ignacio EB4APL


On 25/08/2013 18:34, Akos Czermann wrote:

Hi,

Thanks for the reply. I'm looking for DVB-T software specifically as
in Ireland we have freeview. So which software shall I get? I'd
greatly appreciate a link or pointers, more precisely my other half
would, as she is not so content watching spikes and a waterfall
display as I am :-)
Thanks in advance,

Akos

PS. I use 75 ppm frequency correction, seems to work well.





------------------------------------------------------------------------


No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 9.0.932 / Virus Database: 3211.1.1/6106 - Release Date: 08/25/13 02:15:00


Re: [SDRSharp] Re: TV software - Which one?

Joe M.
 

You can also just install one driver, then disable it and install the second one, then enable which one you want to use in the Device Manager.

Joe M.

EB4APL wrote:

Akos,
Didn't you got a CD with your dongle? The drivers and the TV software is on it.
But probably you can't use the dongle for SDR and DVB-T on the same computer, since the programs need different drivers. Some folks on this list have had success installing the DVB drivers using a different USB port that Zadig used for SDR, but it depends of your computer and OS and the exact reason is not clear. I could not do it when tried that on 3 different computers.
Regards,
Ignacio EB4APL
On 25/08/2013 18:34, Akos Czermann wrote:
Hi,
Thanks for the reply. I'm looking for DVB-T software specifically as in Ireland we have freeview. So which software shall I get? I'd greatly appreciate a link or pointers, more precisely my other half would, as she is not so content watching spikes and a waterfall display as I am :-) Thanks in advance,
Akos

PS. I use 75 ppm frequency correction, seems to work well.
------------------------------------------------------------------------
No virus found in this incoming message.
Checked by AVG - www.avg.com Version: 9.0.932 / Virus Database: 3211.1.1/6106 - Release Date: 08/25/13 02:15:00


Re: Overcoming local noise.

diyer
 

Unfortunately, many of these power supplies do not receive any testing to see if they meet Class A or B (USA) or EU equiv standards. So they are actually illegal but of course there are bigger fish to fry than these guys.

Don


Re: [SDRSharp] Re: TV software - Which one?

kjs1982 <kjs@...>
 


Which os? If your using Linux then mine works fine with tv headend running onubutntu with the kernel upgraded to 3.10 - xbmc is used as the front-end.

For saorview you'll be fine, but if you are in the north the freeview hd multiplex and the mini mux carrying RTÉ and TG4 are dvb t2 so won't work with the rtl dongles.

Fwiw one of my dongles didn't come with the CD or aerial, some UK based sellers targeting sales at the sdr market remove them to save shipping costs (although I did get a link to download it)

On 25 Aug 2013 17:34, "Akos Czermann" <inrepertum@...> wrote:
 

Hi, 

Thanks for the reply. I'm looking for DVB-T software specifically as in Ireland we have freeview. So which software shall I get? I'd greatly appreciate a link or pointers, more precisely my other half would, as she is not so content watching spikes and a waterfall display as I am :-) 
Thanks in advance, 

Akos

PS. I use 75 ppm frequency correction, seems to work well. 


Re: [SDRSharp] Re: TV software - Which one?

EB4APL <eb4apl@...>
 

Akos,

Didn't you got a CD with your dongle? The drivers and the TV software is on it.
But probably you can't use the dongle for SDR and DVB-T on the same computer, since the programs need different drivers.  Some folks on this list have had success installing the DVB drivers using a different USB port that Zadig used for SDR, but it depends of your computer and OS and the exact reason is not clear.  I could not do it when tried that on 3 different computers.

Regards,
Ignacio EB4APL


On 25/08/2013 18:34, Akos Czermann wrote:
 
Hi, 

Thanks for the reply. I'm looking for DVB-T software specifically as in Ireland we have freeview. So which software shall I get? I'd greatly appreciate a link or pointers, more precisely my other half would, as she is not so content watching spikes and a waterfall display as I am :-) 
Thanks in advance, 

Akos

PS. I use 75 ppm frequency correction, seems to work well. 


Re: [SDRSharp] Re: TV software - Which one?

David J Taylor
 

Hi,

Thanks for the reply. I'm looking for DVB-T software specifically as in Ireland we have freeview. So which software shall I get? I'd greatly appreciate a link or pointers, more precisely my other half would, as she is not so content watching spikes and a waterfall display as I am :-)
Thanks in advance,

Akos

PS. I use 75 ppm frequency correction, seems to work well.
==================

Akos,

Software may have come with your dongle, or at least the supplier should point you to suitable software.

Cheers,
David
--
SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-taylor@...


Re: TV software - Which one?

Akos Czermann <inrepertum@...>
 

Hi, 

Thanks for the reply. I'm looking for DVB-T software specifically as in Ireland we have freeview. So which software shall I get? I'd greatly appreciate a link or pointers, more precisely my other half would, as she is not so content watching spikes and a waterfall display as I am :-) 
Thanks in advance, 

Akos

PS. I use 75 ppm frequency correction, seems to work well. 


Re: TV signal viewing?

Alberto I2PHD
 

On 8/25/2013 4:35 PM, s.lloydhughes@... wrote:

Remember there is DVB-T2 transmissions here in the UK. Which is likely to
replace DVB-T in a few years time. As they provide more capacity per multiplex.

I asked a local radio and TV reseller here, and he told me that almost all new
TV sets are already equipped with a T2-compliant decoder.

--
73 Alberto I2PHD


Re: [SDRSharp] Overcoming local noise.

Martin <kb0hae@...>
 

Hi Chris. Did you order a generic power supply, or an HP brand replacement? I had a similar experience when I bought a generic supply as a spare for my IBM T43. I got rid of it and got an original IBM supply. No noise from the IBM supplies.

Poorly designed switch mode power supplies are a real problem these days. Many electronic devices including some wireless (WiFi) routers use these RF noise generators. I have many CFL bulbs, none cause interference unless they are less than 6 inches from an antenna. I have read that plasma TVs and many newer furnaces cause a lot of interference too.

I have managed to eliminate most of the noise sources here, and my neighbors are farther away than in most local areas here. Turning things off is not enough. You need to unplug things, since many devices have noisy internal power supplies that are not turned off by the power switch. Do this one thing at a time, leaving things unplugged as you go until you find the culprit.

In the case of external supplies, sometimes you can replace a switch mode supply with a non-switching supply. I managed to find Netgear routers (one as a spare) that have non-switching supplies. Previous routers had very noisy switching supplies.

ttyl

On 08/24/2013 11:46 PM, feralmet wrote:

A few days ago, the 18.5 volt power pack for my HP 311 notebook
failed, so I ordered a new one. The new power pack obliterated radio
reception all over the house, and even interfered with FM radio
broadcasts received on a good outdoor co-ax fed antenna. No amount of
filtration with ferrite blocks or mains filters made any difference.

Things are just going from bad to worse with some of these
switch-mode power supplies.

Other notable noise sources are the charger for my electric bike and
my variable heat soldering iron. Low wattage flouro lamps were a
problem sometimes too, but I have replaced those with LED globes and
they seem to be silent.

So what I am saying is that it's worth investigating possible noise
sources by turning things off around the house. In my case it was
causing considerable de-sensitisation of the dongle, both on VHF and
HF (with HamItUp upconverter).

Hope this might help a newbie or two....

Cheers, Chris VK3CJS




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