Do you all realize there was a web site a few years ago that showed you how to modify a TenTec noise blanker to work in a Drake R-4C? The thing was modified by Rob Frohne, KL7NA. I don't know if his e-mail address is still good but it was [email protected] (E.F. Cross School of Engineering).
Lee, w0vt ----- Original Message ----- From: Jim Pruitt To: DrakeList Sent: Saturday, October 10, 2009 4:34 PM Subject: Re: [Drakelist] TR-4 (and R4C) Noise Blanker question Garey, I had tried a few times to contact Martin Sole, HS0ZED about his noise blanker for the R4C on his web page at http://www.qsl.net/hs0zed/drake/r4cnb.html but so far have never been able to get in touch with him or at least get a reply but he apparently had pc boards for the R4C noise blanker at one time. I do not know how much that helps with the 34PNB Blanker but if they are the same then it might be one avenue to get or make replacements. He does have a picture of his pc board at http://www.qsl.net/hs0zed/drake/r4cnb.html and http://www.qsl.net/hs0zed/drake/R4CNB1b.jpg and http://www.qsl.net/hs0zed/drake/R4CNB1a.jpg . Martin used to hang out on this reflector and may still be here. Thank you. Jim Pruitt >>> From: Garey Barrell <[email protected]> To: <[email protected]>, Drakelist <[email protected]> Date: 10/7/2009 7:42 PM Subject: Re: [Drakelist] TR-4 Noise Blanker question I have a copy of the 34-PNB manual on my CD. There is also a hi-res color photo of the 34-PNB board (both sides) with the transistors id'd and a table of voltages, along. The 34-NB manual has the circuit and Drake's photo of the component side and installation procedure in a TR-4. The circuit is the same in all of them, and the basic circuit topology is the same all the way back to the 9-NB. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B, C-Line & TR-4/C Service Supplement CDs <www.k4oah.com> Ron wrote: > Pete, > I gave Garey a copy of the 34NB kit that Drake sold for wired install to the TR3 and early TR4s. I have the electronic copy somewhere, and I think Garey has it on his CDs, but am not sure. I seem to remember that it had a picture of the PC board, so it might be fairly easy to fabricate. About the only hard part would be any toroids. Seems like it has 2 or 3 of them. I could guess resonate at the IF freq, but not really sure. > > If you are serious, I will try to look up the electronic doc and get it to you. > > 73, > Ron WD8SBB > > --- On Tue, 10/6/09, RadiosRUs <[email protected]> wrote: > > >> From: RadiosRUs <[email protected]> >> Subject: [Drakelist] TR-4 Noise Blanker question >> To: [email protected] >> Date: Tuesday, October 6, 2009, 9:38 PM >> >> >> This may have been covered before; but ... has >> anyone ever hand built a >> noise blanker using the Drake schematic and installed it in >> a TR-4? >> >> Pete N6QW ------------------------------------------------------------------------------ _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
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