Richard: Good job hunting down the offender. Give him a fair trial, then hang him by his power cord.
One word to the wise... You should not run the PreAmp higher than you need it. On 20 Meters in a city, probably at 0, in a quiet location perhaps +10. It won't damage anything, but you are using up your dynamic range for no reason. --- Graham == On Thu, Jul 22, 2010 at 4:27 PM, Richard Allen <[email protected]> wrote: > That is great reading. Thanks for the link. > > W5SXD > > > On Jul 22, 2010, at 3:32 PM, "Richard Clafton" <[email protected]> wrote: > > http://www.audiosystemsgroup.com/RFI-Ham.pdf >> >> search for bucket >> >> -----Original Message----- >> From: [email protected] [mailto: >> [email protected]] On Behalf Of Richard Allen >> Sent: Thursday, July 22, 2010 3:30 PM >> To: dan edwards >> Cc: [email protected] >> Subject: Re: [FlexEdge] noise source found and killed >> >> K9YC's bucket test? >> We gotta know ... >> >> w5sxd >> >> On Jul 22, 2010, at 3:02 PM, dan edwards <[email protected]> wrote: >> >> sure wish there was a cheap and easy way to clean those buggers up.. >>> >>> besides K9YC's 'bucket test'....... >>> >>> 73, w5xz, dan >>> >>> >>> --- On Thu, 7/22/10, richard allen <[email protected]> wrote: >>> >>> From: richard allen <[email protected]> >>> Subject: [FlexEdge] noise source found and killed >>> To: "Graham Haddock" <[email protected]> >>> Cc: [email protected], [email protected] >>> Date: Thursday, July 22, 2010, 6:55 PM >>> >>> Before: >>> >>> http://www.rcallen.com/noise14.gif >>> >>> 'Twas a little switcher that was powering my Oak Hills Research QRP >>> Wattmeter giving it a convienient path to my attached 1500. It was >>> s9+20 at 14.015 on my handheld Kenwood thf6. >>> >>> See the little bugger at: >>> >>> http://www.rcallen.com/offender.gif >>> >>> Thanks for all the ideas and now the bottom end of 20m is useable. >>> >>> http://www.rcallen.com/after.gif >>> >>> Great radio, Graham. >>> >>> Regards, >>> >>> Richard W5SXD >>> >>> Graham Haddock <[email protected]> wrote: >>> (07/22/2010 11:07) >>> >>> Richard: >>>> >>>> That looks like the signature of a switching powersupply. Are you >>>> >>> using a >>> >>>> "wallwart" or other switching supply >>>> to power your 1500? I would start by changing power supplies. >>>> >>>> Cheap switching supplies are notorious for emitting this kind of >>>> >>> garbage. >>> >>>> >>>> --- Graham / KE9H >>>> >>>> == >>>> >>>> On Thu, Jul 22, 2010 at 10:53 AM, richard allen <[email protected]> >>>> >>> wrote: >>> >>>> >>>> Does anyone recognise this type of noise? >>>>> >>>>> http://www.rcallen.com/noise14.gif >>>>> >>>>> I figured I'd ask before starting to unplug everything as I have >>>>> >>>> all sorts >>> >>>> of possibilities in my lab. I still hear it with a dummy load on >>>>> >>>> the >>> >>>> antenna of my 1500 but not as strong. >>>>> >>>>> Richard W5SXD >>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> Flexedge mailing list >>>>> [email protected] >>>>> http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz >>>>> This is the FlexRadio Systems e-mail Reflector called FlexEdge. >>>>> >>>> It is used >>> >>>> for posting topics related to SDR software development and >>>>> >>>> experimentalist >>> >>>> who are using beta versions of the software. >>>>> >>>>> >>> >>> _______________________________________________ >>> Flexedge mailing list >>> [email protected] >>> http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz >>> This is the FlexRadio Systems e-mail Reflector called FlexEdge. It >>> is used for posting topics related to SDR software development and >>> experimentalist who are using beta versions of the software. >>> >> _______________________________________________ >> Flexedge mailing list >> [email protected] >> http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz >> This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is >> used for posting topics related to SDR software development >> and experimentalist who are using beta versions of the software. >> >> >> > _______________________________________________ > Flexedge mailing list > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz > This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used > for posting topics related to SDR software development and experimentalist > who are using beta versions of the software. > _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software.
