John The 2b noise limiter is not a noise blanker as we use to define. It is a simple circuit that works along with the diode detector. It is effective on AM (product detector must be off) for ingnition noise or eletric fence sparks , for instance.
In my opinion the Drake 2B is a receiver ahead of its time. If you have a good one , keep it. Regards Fred PY2XB On Thu, 23 Jul 2009 09:15:22 -0400, Paul Gerhardt <phgerha...@gmail.com> wrote: > John > Hope you are having fun with the 2B. My first one was used from Harrison > Radio in NYC. They had a stack of them in stock in '63 or so. Sold it > about '69 or so and purchased one from eBay about two years ago. I usually > don't need the noise limiter but it does seem to work on ignition type > pulse > noise reasonably well like I remember. Band static should sound the same. > Try it on 10-15 meters when cars are going by nearby and see if you notice > a > difference. > > BTW I reccomend Tom http://www.hayseedhamfest.com/ for the re-cap kit as my > 2B needed it. See pix of the 2B on my blog www.pgerhardt.blogspot.com > > > > Paul on the Eastern Shore of MD > > Message: 1 >> Date: Wed, 22 Jul 2009 12:18:01 -0700 (PDT) >> From: John King <k5...@yahoo.com> >> Subject: [Drakelist] Noise Limiter in Drake 2B >> To: Drakelist@zerobeat.net >> Message-ID: <402215.41959...@web50404.mail.re2.yahoo.com> >> Content-Type: text/plain; charset=us-ascii >> >> I bought my first Drake 2B in 1961, but like a dummy, sold it in about >> 1968 >> and regretted it until I was able to purchase a very nice replacement a >> couple of weeks ago. The replacement works well, but I am trying to >> determine how effective the NOISE LIMITER should be. I notice no >> difference >> in normal band static noise when I switch the Noise Limiter into the >> circuit. >> >> I would like your comments based on actual experience with a Drake 2B >> with >> a NOISE LIMITER. My experience with numerous Vintage Hammarlund, >> Hallicrafters, National and other brand receivers with a noise limiter >> has >> been that it is next to ineffective on noise and if the limiting is >> turned >> up on an adjustable noise limiter, it degrades gain and audio to the >> extent >> that listening to the noise is a better choice. >> >> Is that the same performance that I should expect on the Drake 2B noise >> limiter? Maybe I should look into noise BLANKERS for all my Drakes if >> that >> is the case. I know they are not common, but I seem to remember someone >> developing a blanker circuit for the Drake 4 Line. Anyone have info about >> that? 73, John, K5PGW >> >> >> >> >> -- >> Paul Gerhardt >> K3PG >> http://pgerhardt.blogspot.com >> QRP ARCI 6674 >> FP 274 >> _______________________________________________ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
