Re: [Drakelist] T-4XB Dial - White Diffuser Material
In my previous resonse regarding the white diffuser replacement I probably was not clear regarding the link I posted and the product made by EZ Quilting by Wrights. They make a mylar sheet that is 12" x 18" that is used for pattern making. This mylar sheet comes in various colors and is excellent for making both the blue filter and white diffuser replacements. One sheet can make several. I was shown this by a fellow ham who has refurbished several Drakes and replaced the filters and diffusers. I used it on a recent B-Line project and it works great. If you go to this link look at the white mylar pattern material for $3.99. http://www.simplicity.com/p-1470-no-melt-mylar-template-12-x-18.aspx Bill, nm4k On Sun, Aug 8, 2010 at 4:51 PM, Bill Jackson wrote: > Greetings to the Group, > > I picked up a Drake T-4XB at a local hamfest that has a cracked white dial > diffuser. I still have a couple of the blue filter replacement kits from > WA9TGT, but those kits did not include the white diffuser. I see that > KG9BV is > now selling the blue filter replacement kits including the white diffuser, > but > email quires to his published address have gone unanswered. > > Does anyone have a suggestion on where to obtain some of the white plastic > material that is suitable for this application? > > Thanks in advance. > > 73 de Bill, K9RZ > > > ___ > Drakelist mailing list > Drakelist@zerobeat.net > http://mailman.zerobeat.net/mailman/listinfo/drakelist > ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] Looking for TR-33c stuff
OK. Having looked at Ron's manual, it's not. The mixing scheme is the same as that used by Standard during the 1970s for some of their portable and mobile radios. On 09-Aug-10 00:44, Nigel Gunn G8IFF/W8IFF wrote: Was the Tr-33 basically a rebadged Trio/Kenwood TR-2200? On 08-Aug-10 16:40, Tom Swisher wrote: All; Does anyone have lurking about in the dark recesses of their computers an electronic copy of the manual(s) for the Drake TR-33c they might be willing to share? I'm also looking for a few crystals, specifically 145.270, 146.760, 147.060, 147.210 and 147.240 if anyone has any spares taking up space. Thanks, Tom -- Tom Swisher, WA8PYR "/A wise and frugal government, which shall leave men free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor the bread it has earned - this is the sum of good government." - /*Thomas Jefferson* ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.851 / Virus Database: 271.1.1/3057 - Release Date: 08/07/10 18:12:00 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.851 / Virus Database: 271.1.1/3057 - Release Date: 08/07/10 18:12:00 -- Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937 825 5032 Amateur Radio G8IFF W8IFF (was KC8NHF), e-mail ni...@ngunn.net www http://www.ngunn.net Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP Club International #385, Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK 0182, MKARS, ALC, GCARES, XWARN. ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] Looking for TR-33c stuff
Was the Tr-33 basically a rebadged Trio/Kenwood TR-2200? On 08-Aug-10 16:40, Tom Swisher wrote: All; Does anyone have lurking about in the dark recesses of their computers an electronic copy of the manual(s) for the Drake TR-33c they might be willing to share? I'm also looking for a few crystals, specifically 145.270, 146.760, 147.060, 147.210 and 147.240 if anyone has any spares taking up space. Thanks, Tom -- Tom Swisher, WA8PYR "/A wise and frugal government, which shall leave men free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor the bread it has earned - this is the sum of good government." - /*Thomas Jefferson* ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.851 / Virus Database: 271.1.1/3057 - Release Date: 08/07/10 18:12:00 -- Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937 825 5032 Amateur Radio G8IFF W8IFF (was KC8NHF), e-mail ni...@ngunn.net www http://www.ngunn.net Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP Club International #385, Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK 0182, MKARS, ALC, GCARES, XWARN. ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] T-4XB Dial - White Diffuser Material
Try a product called Tinted Template Plastic EZ Quilting by Wrights P.O. Box 398 West Warren, MA 01092-0398 I have a sheet of this in Blue and White that make good replacements. I think you can find them at Hobby Stores or Craft Stores. Here is a link that you can try: http://www.simplicity.com/p-1470-no-melt-mylar-template-12-x-18.aspx Good Luck Bill, nm4k On Sun, Aug 8, 2010 at 7:05 PM, Gary Poland wrote: > Bill, > I have longed searched for a suitable replacement for the white dial back > ground plastic. The only material that I have been able to come up with that > passed light well enough is plastic For Sale, Garage Sale, etc signs. You > don't get a lot of white area without printing for each sign you buy but > they are cheap. I have tried contacting the companies that make the signs in > hope of buying blank sheets, but have never received an answer. > > 73, Gary > > ___ > Drakelist mailing list > Drakelist@zerobeat.net > http://mailman.zerobeat.net/mailman/listinfo/drakelist > > ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] T-4XB Dial - White Diffuser Material
What about cutting a piece of glass then sand blasting it to create a fresnal lens? Sounds crazy but it just might work. From: drakelist-boun...@zerobeat.net To: Bill Jackson ; drakelist Sent: Sun Aug 08 16:05:09 2010 Subject: Re: [Drakelist] T-4XB Dial - White Diffuser Material Bill, I have longed searched for a suitable replacement for the white dial back ground plastic. The only material that I have been able to come up with that passed light well enough is plastic For Sale, Garage Sale, etc signs. You don't get a lot of white area without printing for each sign you buy but they are cheap. I have tried contacting the companies that make the signs in hope of buying blank sheets, but have never received an answer. 73, Gary ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] T-4XB Dial - White Diffuser Material
Bill, I have longed searched for a suitable replacement for the white dial back ground plastic. The only material that I have been able to come up with that passed light well enough is plastic For Sale, Garage Sale, etc signs. You don't get a lot of white area without printing for each sign you buy but they are cheap. I have tried contacting the companies that make the signs in hope of buying blank sheets, but have never received an answer. 73, Gary___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] T-4XB Dial - White Diffuser Material
Greetings to the Group, I picked up a Drake T-4XB at a local hamfest that has a cracked white dial diffuser. I still have a couple of the blue filter replacement kits from WA9TGT, but those kits did not include the white diffuser. I see that KG9BV is now selling the blue filter replacement kits including the white diffuser, but email quires to his published address have gone unanswered. Does anyone have a suggestion on where to obtain some of the white plastic material that is suitable for this application? Thanks in advance. 73 de Bill, K9RZ ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] Clear up the confusion
Bob - Looking at your photo again, I'm assuming the cap at the lower right is the one you are concerned about. Are you sure it's 'blown'?? They are coated with wax, and when heated the wax tends to accumulate on the lowest point, and is much thicker and has that 'brown' color. It' VERY unusual for a disc ceramic to fail unless it's physically damaged. Also, that one is on the lower RF side of the feedthrough, meaning it shouldn't see much if any RF over and above the AC filament voltage. That is a 'garden variety' disc ceramic cap, 0.1 uF, and the 'Z5V' code means +10° to +85° operating range, and +20 / -80% capacitance change over that range. Interesting that yours seems to be marked 'backwards', i.e., +80 / -20%. The most common is 'Z5U' which is a +20 / -55% variety. The absolute value isn't all that important. The voltage isn't marked, but most disc ceramics of that type/era were 600V DC unless marked otherwise. These days they are typically lower voltage, 50 or 100V DC, which would still be more than high enough. Any of the usual suspects, Mouser, Digikey, Allied, etc. should have plenty. Even better, if you have any sort of electronics surplus stores left, they would have boxes of them. Hamfests are also a good source. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement CDs ROBERT SMITH wrote: Hope I'm not getting into trouble posting this again. I have a late model L4B amp- serial number 6122. I'm new to this Drake and vintage gear so please bear with me. I blew a Ceramic Disc capacitor on the L4B C -26, Stamp .1 Z5V+80 -20. This goes to the RFC 2 then to one of the 3-500Z filament. It has to have high amperage thru it I would image, plus what voltage? Tube info says 5 volts on the filament. So what I would like to know where I could fine a replacement for the blown one and a couple extras. Part number ect. I have enclosed a picture of the blown cap. I think this is used for keeping RF away from croke and filament?? Thanks Bob w0vu ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] Clear up the confusion
Uh-oh... Is this a pattern?? :-) Are certain that this arrangement is "original" and not a 'fix' applied later? Interesting photo, if original, perhaps Drake wasn't completely happy with Sprague 80P3s after all! These look much more robust. Are there any markings on the white feedthroughs? They look almost like ceramic feedthroughs, i.e., just a bolt with insulation around it, in which case Drake came to the same conclusion I did. Is the 'blown' one one of the tan disc caps on either side? Yes, the function is to keep the RF Drive signal inside the input shielded area of the amp. The caps work against the inductance of the filament choke, L2. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement CDs ROBERT SMITH wrote: Hope I'm not getting into trouble posting this again. I have a late model L4B amp- serial number 6122. I'm new to this Drake and vintage gear so please bear with me. I blew a Ceramic Disc capacitor on the L4B C -26, Stamp .1 Z5V+80 -20. This goes to the RFC 2 then to one of the 3-500Z filament. It has to have high amperage thru it I would image, plus what voltage? Tube info says 5 volts on the filament. So what I would like to know where I could fine a replacement for the blown one and a couple extras. Part number ect. I have enclosed a picture of the blown cap. I think this is used for keeping RF away from croke and filament?? Thanks Bob w0vu ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Clear up the confusion
Hope I'm not getting into trouble posting this again. I have a late model L4B amp- serial number 6122. I'm new to this Drake and vintage gear so please bear with me. I blew a Ceramic Disc capacitor on the L4B C -26, Stamp .1 Z5V+80 -20. This goes to the RFC 2 then to one of the 3-500Z filament. It has to have high amperage thru it I would image, plus what voltage? Tube info says 5 volts on the filament. So what I would like to know where I could fine a replacement for the blown one and a couple extras. Part number ect. I have enclosed a picture of the blown cap. I think this is used for keeping RF away from croke and filament?? Thanks Bob w0vu<>___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] Looking for TR-33c stuff
Tom, you will find on my Drake website (WB4HFN.com) the complete manual for the TR-33. It is in the Adobe (.pdf) format.Here is the link. http://wb4hfn.com/DRAKE/DrakeManual-PDF.htm 73, Ron / WB4HFN _ From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net] On Behalf Of Tom Swisher Sent: Sunday, August 08, 2010 12:40 PM To: drakelist@zerobeat.net Subject: [Drakelist] Looking for TR-33c stuff All; Does anyone have lurking about in the dark recesses of their computers an electronic copy of the manual(s) for the Drake TR-33c they might be willing to share? I'm also looking for a few crystals, specifically 145.270, 146.760, 147.060, 147.210 and 147.240 if anyone has any spares taking up space. Thanks, Tom -- Tom Swisher, WA8PYR "A wise and frugal government, which shall leave men free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor the bread it has earned - this is the sum of good government." - Thomas Jefferson ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Looking for TR-33c stuff
All; Does anyone have lurking about in the dark recesses of their computers an electronic copy of the manual(s) for the Drake TR-33c they might be willing to share? I'm also looking for a few crystals, specifically 145.270, 146.760, 147.060, 147.210 and 147.240 if anyone has any spares taking up space. Thanks, Tom -- Tom Swisher, WA8PYR "A wise and frugal government, which shall leave men free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor the bread it has earned - this is the sum of good government." - Thomas Jefferson ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] l4b feed through caps
Karl - Yep, those are the Sprague 'HyPass' caps. They are rated for 20A, which is a little disconcerting, but there seem to be few failures. SSN doesn't have them any more though. The current limitation would be the size of the internal conductor, and the attachment method at each end. I suspect the conductor just runs warm, which may be what has caused the limited failures. The other thing of interest would be the voltage drop across it, lowering the applied filament voltage, which may not be a bad thing! 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement CDs Karl Corder wrote: Found the boxes that the feed through caps came (miracle), anyway the boxes read Sprague by pass capacitor 80P3 .1 MF 600 WVDC 516 .0693-000 . These were purchased from Surplus Sales of Nebraska for $18/each. I hope this helps, been using the L4B for six months and no problem so far. I have been driving it with a t4x and now a tr4, according to the meters it is putting out around 950 watts cw and near 1500 watts ssb. I hope that helps as I spent a year repairing this L4B as it had been badly abused. I received tremendous help for folks on this site, like Garey and Rick and others. karl - wa2ovj ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] l4b feed through caps
Found the boxes that the feed through caps came (miracle), anyway the boxes read Sprague by pass capacitor 80P3 .1 MF 600 WVDC 516 .0693-000 . These were purchased from Surplus Sales of Nebraska for $18/each. I hope this helps, been using the L4B for six months and no problem so far. I have been driving it with a t4x and now a tr4, according to the meters it is putting out around 950 watts cw and near 1500 watts ssb. I hope that helps as I spent a year repairing this L4B as it had been badly abused. I received tremendous help for folks on this site, like Garey and Rick and others. karl - wa2ovj ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
