[Lowfer] MP reception

[Bill Ashlock]

Hi again Mitch (and all),
 
Just another 'finding' relating to the use of ARGO after some time away from the action:
 
On my new Compaq laptop I was experiencing some interesting-looking background patterns that didn't seem to have anything to do with the receiver output signal. Turned out that the placement of the the shielded wire leading to the 'mike' input of the computer changed the pattern. To fix this I moved the attenuator and coupling xfmr close to the input, thus reducing the sensitivity of the cable, as a one-turn pick-up coil, to magnetic fields (which the shield has little effect over).
 
Will be watching tonight.....
 
Bill > Date: Sat, 15 Nov 2008 15:19:11 -0500> Subject: Re: [Lowfer] MP reception> From: mitch.powell at sympatico.ca> To: lowfer at mailman.qth.net> > > > > Just a short note to tell you I am seeing very strong QRSS60 MP's at the 185.3> > watering hole in Ellsworth, NH. Even saw them all day today.> > Thanks Bill - I hope conditions keep improving, and we get a nice quiet> winter - with good propagation. Sorta like the 10 stations in the "watering> hole" conditions !> > > > Eventually, after unplugging all the appliances, one by one, the 13" TV turned> > out to be the culprit, even thought it was not turned on! ........ so expect> > more reports in the future.> > Now you've got me thinking - I turn those things off - but don't actuall> unplug ... and I should know better. Thanks for the tip .> > > > Fill me in on what you are running these days in London.> > Still using the 137 kHz loop for transmit - very, very stable - just peak it> up once a month ( but not really necessary ). Using the famous NPN-PNP> combination you described and haven't changed things for a year or so.> > The "rig" is turned off when I want to do some listening for the other> 160-190 kHz stations.> > Always checking the mail though - so nice to hear from you> > 73> > Mitch> > _______________________________________________> >From the Lowfer mailing list> Send messages to: Lowfer at mailman.qth.net> To sub/unsub visit: http://mailman.qth.net/mailman/listinfo/lowfer
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