Re: [drakelist] Vacuum Tube markings
And another method is to rub the tube on the hairs at the back of your neck. The oils will help read the tube markings (amazing what we remember from the old days). 73 Lee WB6SSW ** Check out AOL's list of 2007's hottest products. (http://money.aol.com/special/hot-products-2007?NCID=aoltop000301)
Re: [drakelist] Vacuum Tube markings
Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang -- Tube markings are generally difficult to rub off, at least tubes less than 50 years old. The early tubes were often marked with ink, which could wear or be washed off. Miniature tubes mostly were marked with an etch process that is very tough. That being said, I would try to wipe them first with a dry cloth, minimizing pressure or rubbing on the tube number. A cloth dampened with water, not wet, would be the next choice. Tubes that have had the number washed or rubbed off can often be read by breathing gently on the glass, as in cleaning eyeglasses, which will make the number appear. Another technique is to put the tube in the freezer and then when it's removed the number will be visible briefly. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B C-Line Service Supplement CDs www.k4oah.com Donley wrote: When restoring a tube type radio, the restoration looks better when the tubes are nice and shiny. But cleaning tubes is hazardous to tube identification. The markings usually come off easier than the dirt. What are recommended methods of cleaning tubes? Also, is there a method of reading the markings on tubes that have been smudged or with partially or totally removed markings? I seem to recall someone mentioning that the markings slightly etch the glass and there is a way to make the markings identifiable. Was I dreaming? If there is no way to identify an unmarked tube, what good is it? Dick KC9UB No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.16.14/1171 - Release Date: 12/4/2007 7:31 PM -- Submissions:[EMAIL PROTECTED] Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
[drakelist] Vacuum Tube markings
When restoring a tube type radio, the restoration looks better when the tubes are nice and shiny. But cleaning tubes is hazardous to tube identification. The markings usually come off easier than the dirt. What are recommended methods of cleaning tubes? Also, is there a method of reading the markings on tubes that have been smudged or with partially or totally removed markings? I seem to recall someone mentioning that the markings slightly etch the glass and there is a way to make the markings identifiable. Was I dreaming? If there is no way to identify an unmarked tube, what good is it? Dick KC9UB
Re: [drakelist] Vacuum Tube markings
Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang -- Lee - Another is alongside your nose.. Wonders of modern science! 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B C-Line Service Supplement CDs www.k4oah.com [EMAIL PROTECTED] wrote: And another method is to rub the tube on the hairs at the back of your neck. The oils will help read the tube markings (amazing what we remember from the old days). 73 Lee WB6SSW -- Submissions:[EMAIL PROTECTED] Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Vacuum Tube markings
Dan Ringer [EMAIL PROTECTED] made an utterance to the drakelist gang -- You might also try a soft (#2) lead pencil. Rub the side of the lead over the (absent) markings. You can read the tube type until you rub it off (again) (Funny the stuff you pick up in 45 years as a ham.) Dan, K8WV On 5 Dec 2007 at 15:39, Donley wrote: When restoring a tube type radio, the restoration looks better when the tubes are nice and shiny. But cleaning tubes is hazardous to tube identification. The markings usually come offeasier than the dirt. What are recommended methods of cleaning tubes? Also, is there a method ofreading the markings ontubes that havebeen smudged or with partially or totally removed markings? I seem to recall someone mentioning that the markings slightly etch the glass and there is a way tomake the markingsidentifiable. Was I dreaming? If there is no way to identify an unmarked tube, what good is it? Dick KC9UB --- Darrell (Dan) Ringer Attorney at Law ABA Solo Practitioner of the Year Past-President, WV State Bar WV Lawyer of the Year Fellow, WV Bar Foundation 823 Fairmont Road Morgantown, WV 26501 304-292-1999 FAX 304-292-3372 = Watch THE LAW WORKS (http://www.thelawworks.org) on WV Public Television, Thursdays at 8:30 p.m. = -- Submissions:[EMAIL PROTECTED] Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Vacuum Tube markings
Dennis Monticelli [EMAIL PROTECTED] made an utterance to the drakelist gang -- I clean the tube envelope with Windex and am careful to keep off the markings. Qtips can be used to increase precision. I then do a light dry rub on the letters to take off loose surface dirt. Works pretty well. Identifying worn markings can sometimes be accomplished by the hot breath method. Apparently the condensation is different between the naked glass and the marked glass leading to some heightened contrast. There are some tubes that rare ecognizable without markings, but most of the unmarked tubes remain mystery tubes. On Dec 5, 2007 12:39 PM, Donley [EMAIL PROTECTED] wrote: When restoring a tube type radio, the restoration looks better when the tubes are nice and shiny. But cleaning tubes is hazardous to tube identification. The markings usually come off easier than the dirt. What are recommended methods of cleaning tubes? Also, is there a method of reading the markings on tubes that have been smudged or with partially or totally removed markings? I seem to recall someone mentioning that the markings slightly etch the glass and there is a way to make the markings identifiable. Was I dreaming? If there is no way to identify an unmarked tube, what good is it? Dick KC9UB -- Submissions:[EMAIL PROTECTED] Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Vacuum Tube markings
Hi 73, Dick PA2DW On 5-12-2007 22:35:00, [EMAIL PROTECTED] wrote: And another method is to rub the tube on the hairs at the back of your neck. The oils will help read the tube markings (amazing what we remember from the old days). 73 Lee WB6SSW ** Check out AOL's list of 2007's hottest products. (http://money.aol.com/special/hot-products-2007?NCID=aoltop000301)
Re: [drakelist] 4 line blue filters
W4RXN [EMAIL PROTECTED] made an utterance to the drakelist gang -- Gary Are the 755 bulbs OK to use in TR-4 and TR-4C and the RV sries VFO's ? Thanks 73 Wayne W4RXN - Original Message - From: Garey Barrell [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, November 07, 2007 8:16 PM Subject: Re: [drakelist] 4 line blue filters Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang -- Gary - That has been my experience also. The white background tends to yellow with age, imparting a greenish cast to the blue-green of the original filter color. I did find a frosted mylar sheet that diffused the light almost as well as the white, but still had a hot spot in the middle. Using the 755 bulb instead of the original 47 helps considerably in extending the life of both filter pieces, plus gives the added benefit of almost forever bulb life. 73, Garey - K4OAH St Charles, IL Drake 2-B, 4-B C-Line Service Supplement CDs www.k4oah.com Gary Poland wrote: Gary Poland [EMAIL PROTECTED] made an utterance to the drakelist gang -- Except for the white plastic used for GARAGE SALE signs I have yet to find a suitable sub for the white plastic dial background material. I have also tried sheet vinyl from the local hobby shop but it wont pass enough light. 73, Gary W8PU http://home.cinci.rr.com/w8pu -- Submissions:[EMAIL PROTECTED] Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net -- -- Submissions:[EMAIL PROTECTED] Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] 4 line blue filters
Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang -- Wayne - Yes, they are exactly the same voltage and current rating as the #47. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B C-Line Service Supplement CDs www.k4oah.com W4RXN wrote: W4RXN [EMAIL PROTECTED] made an utterance to the drakelist gang -- Gary Are the 755 bulbs OK to use in TR-4 and TR-4C and the RV sries VFO's ? Thanks 73 Wayne W4RXN - Original Message - From: Garey Barrell [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, November 07, 2007 8:16 PM Subject: Re: [drakelist] 4 line blue filters Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang -- Gary - That has been my experience also. The white background tends to yellow with age, imparting a greenish cast to the blue-green of the original filter color. I did find a frosted mylar sheet that diffused the light almost as well as the white, but still had a hot spot in the middle. Using the 755 bulb instead of the original 47 helps considerably in extending the life of both filter pieces, plus gives the added benefit of almost forever bulb life. 73, Garey - K4OAH St Charles, IL Drake 2-B, 4-B C-Line Service Supplement CDs www.k4oah.com Gary Poland wrote: Gary Poland [EMAIL PROTECTED] made an utterance to the drakelist gang -- Except for the white plastic used for GARAGE SALE signs I have yet to find a suitable sub for the white plastic dial background material. I have also tried sheet vinyl from the local hobby shop but it wont pass enough light. 73, Gary W8PU http://home.cinci.rr.com/w8pu -- Submissions:[EMAIL PROTECTED] Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
