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Sylvania R1131C octal tube ?
I got a couple of the subject tubes which are supposed to be "glow
modulator tubes". Best I can determine is that the light output will vary with current but I can't find data sheet googling. If anyone has pinout and/or data I'd sure like to see it. I think it might be a mid 1960s item as my 1957 Sylvania manual doesn't show it. thanks -- 73 Hank WD5JFR |
Sylvania R1131C octal tube ?
"Henry Kolesnik" wrote in message . net... I got a couple of the subject tubes which are supposed to be "glow modulator tubes". Best I can determine is that the light output will vary with current but I can't find data sheet googling. If anyone has pinout and/or data I'd sure like to see it. I think it might be a mid 1960s item as my 1957 Sylvania manual doesn't show it. thanks -- 73 Hank WD5JFR Google is your friend. See: http://www.radiomuseum.org/tubes/tube_r1131c.html for a little information. Unfortunately they require a membership fee to download the datasheet illustrated. Evidently these tubes were orginally used for early facsimile machines (the sort used to send newspaper wire photos) but the search shows it was also used extensively in vision research. Perhaps someone knows of a better source for the datasheet. -- --- Richard Knoppow Los Angeles, CA, USA |
Sylvania R1131C octal tube ?
Henry Kolesnik wrote:
I got a couple of the subject tubes which are supposed to be "glow modulator tubes". Best I can determine is that the light output will vary with current but I can't find data sheet googling. If anyone has pinout and/or data I'd sure like to see it. I think it might be a mid 1960s item as my 1957 Sylvania manual doesn't show it. thanks I have a Sylania Technical Manual of tube data sheets dated 1959 and have the blue add-ons to 1960, and that tube is not listed anywhere in it. Sorry. |
Sylvania R1131C octal tube ?
Google "crater lamp"
-- Mike Schultz "Henry Kolesnik" wrote in message . net... I got a couple of the subject tubes which are supposed to be "glow modulator tubes". Best I can determine is that the light output will vary with current but I can't find data sheet googling. If anyone has pinout and/or data I'd sure like to see it. I think it might be a mid 1960s item as my 1957 Sylvania manual doesn't show it. thanks -- 73 Hank WD5JFR |
Sylvania R1131C octal tube ?
Henry Kolesnik wrote:
I got a couple of the subject tubes which are supposed to be "glow modulator tubes". Best I can determine is that the light output will vary with current but I can't find data sheet googling. If anyone has pinout and/or data I'd sure like to see it. I think it might be a mid 1960s item as my 1957 Sylvania manual doesn't show it. thanks Sounds like what we used to call "crater" (sp?) tubes and were used in NOAA weather satellite optical printers for APT data in the 80's. Muirhead (UK) was the mfgr. of the receiver/printer units. I simply don't recall who mfg the tubes, though. They were octal based, however. |
Sylvania R1131C octal tube ?
K3HVG wrote:
Henry Kolesnik wrote: I got a couple of the subject tubes which are supposed to be "glow modulator tubes". Best I can determine is that the light output will vary with current but I can't find data sheet googling. If anyone has pinout and/or data I'd sure like to see it. I think it might be a mid 1960s item as my 1957 Sylvania manual doesn't show it. thanks Sounds like what we used to call "crater" (sp?) tubes and were used in NOAA weather satellite optical printers for APT data in the 80's. Muirhead (UK) was the mfgr. of the receiver/printer units. I simply don't recall who mfg the tubes, though. They were octal based, however. Yes, it's definitely a crater tube. I don't have a data sheet on that one, but I have the phototube volume of the RCA HB-3 which has some other more or less similar crater tubes listed. The data sheet has a chart of light output vs. current and it's not very linear, but it tries to be. They were used in some early computer plotters and in a bunch of chart recorders as well. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
Sylvania R1131C octal tube ?
I just posted a pic of them to alt.binaries.pictures.radio
Hank "Scott Dorsey" wrote in message ... K3HVG wrote: Henry Kolesnik wrote: I got a couple of the subject tubes which are supposed to be "glow modulator tubes". Best I can determine is that the light output will vary with current but I can't find data sheet googling. If anyone has pinout and/or data I'd sure like to see it. I think it might be a mid 1960s item as my 1957 Sylvania manual doesn't show it. thanks Sounds like what we used to call "crater" (sp?) tubes and were used in NOAA weather satellite optical printers for APT data in the 80's. Muirhead (UK) was the mfgr. of the receiver/printer units. I simply don't recall who mfg the tubes, though. They were octal based, however. Yes, it's definitely a crater tube. I don't have a data sheet on that one, but I have the phototube volume of the RCA HB-3 which has some other more or less similar crater tubes listed. The data sheet has a chart of light output vs. current and it's not very linear, but it tries to be. They were used in some early computer plotters and in a bunch of chart recorders as well. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
Sylvania R1131C octal tube ?
The octal socket and mounting bracket are separate items.
"Jim Menning" wrote in message ... "Henry Kolesnik" wrote in message ... I just posted a pic of them to alt.binaries.pictures.radio Hank It's also got a very interesting mounting collar on it. Is that part of the tube socket, or completely separate from it? |
Sylvania R1131C octal tube ?
"Robert Baer" wrote in message ... Henry Kolesnik wrote: I got a couple of the subject tubes which are supposed to be "glow modulator tubes". Best I can determine is that the light output will vary with current but I can't find data sheet googling. If anyone has pinout and/or data I'd sure like to see it. I think it might be a mid 1960s item as my 1957 Sylvania manual doesn't show it. thanks I have a Sylania Technical Manual of tube data sheets dated 1959 and have the blue add-ons to 1960, and that tube is not listed anywhere in it. Sorry. Hi Robert, I have some PDF's of scanned tube manuals(Eimac, Taylor RCA), I would love to trade a few for a pdf of the Sylvania Manuals. If interested email me. Cheers |
Sylvania R1131C octal tube ?
"Martin Riddle" wrote in message news:PjEDj.2253$jw2.67@trndny04... "Robert Baer" wrote in message ... Henry Kolesnik wrote: I got a couple of the subject tubes which are supposed to be "glow modulator tubes". Best I can determine is that the light output will vary with current but I can't find data sheet googling. If anyone has pinout and/or data I'd sure like to see it. I think it might be a mid 1960s item as my 1957 Sylvania manual doesn't show it. thanks I have a Sylania Technical Manual of tube data sheets dated 1959 and have the blue add-ons to 1960, and that tube is not listed anywhere in it. Sorry. Hi Robert, I have some PDF's of scanned tube manuals(Eimac, Taylor RCA), I would love to trade a few for a pdf of the Sylvania Manuals. If interested email me. Cheers There is a Sylvania tube manual on-line at: http://www.pmillett.com/sylvania_tub...als_online.htm However, it does not cover the R1131C Lots of other good stuff on this site including several RCA tube manuals and many books. All in PDF form but _very_ large files. -- --- Richard Knoppow Los Angeles, CA, USA |
Sylvania R1131C octal tube ?
|
Sylvania R1131C octal tube ?
On Mon, 17 Mar 2008 19:48:06 -0700, "Richard Knoppow"
wrote: "Martin Riddle" wrote in message news:PjEDj.2253$jw2.67@trndny04... "Robert Baer" wrote in message ... Henry Kolesnik wrote: I got a couple of the subject tubes which are supposed to be "glow modulator tubes". Best I can determine is that the light output will vary with current but I can't find data sheet googling. If anyone has pinout and/or data I'd sure like to see it. I think it might be a mid 1960s item as my 1957 Sylvania manual doesn't show it. thanks I have a Sylania Technical Manual of tube data sheets dated 1959 and have the blue add-ons to 1960, and that tube is not listed anywhere in it. Sorry. Hi Robert, I have some PDF's of scanned tube manuals(Eimac, Taylor RCA), I would love to trade a few for a pdf of the Sylvania Manuals. If interested email me. Cheers There is a Sylvania tube manual on-line at: http://www.pmillett.com/sylvania_tub...als_online.htm However, it does not cover the R1131C Lots of other good stuff on this site including several RCA tube manuals and many books. All in PDF form but _very_ large files. Pretty good, but not my idea of big files. That starts with very full CD images and up. I do not bat an eye at downloading full multiple DVD distributions of Linux. I have dual layer rewriters and media as well. |
Sylvania R1131C octal tube ?
"gudmundur" wrote in message ... In article , says... I got a couple of the subject tubes which are supposed to be "glow modulator tubes". Best I can determine is that the light output will vary with current but I can't find data sheet googling. If anyone has pinout and/or data I'd sure like to see it. I think it might be a mid 1960s item as my 1957 Sylvania manual doesn't show it. thanks -- 73 Hank WD5JFR Everyone replies, and yet you get no answers, R-1131C,D Max dcv 150 ma. 3-25 peak ma. 55 starting voltage 225 crater dia. .093 candelpower .2@25 ma. light color white What is the pin arrangement? -- --- Richard Knoppow Los Angeles, CA, USA |
Sylvania R1131C octal tube ?
"gudmundur" wrote in message ... In article , says... I got a couple of the subject tubes which are supposed to be "glow modulator tubes". Best I can determine is that the light output will vary with current but I can't find data sheet googling. If anyone has pinout and/or data I'd sure like to see it. I think it might be a mid 1960s item as my 1957 Sylvania manual doesn't show it. thanks -- 73 Hank WD5JFR Everyone replies, and yet you get no answers, R-1131C,D Max dcv 150 ma. 3-25 peak ma. 55 starting voltage 225 crater dia. .093 candelpower .2@25 ma. light color white What is the pin arrangement? -- --- Richard Knoppow Los Angeles, CA, USA |
Sylvania R1131C octal tube ?
Thanks for all the help..
I also found this on an old schematic where they show a 1 meg resistor across the 3 & 7. pin 3 cathode pin 7 anode -- 73 Hank WD5JFR "Richard Knoppow" wrote in message ... "gudmundur" wrote in message ... In article , says... I got a couple of the subject tubes which are supposed to be "glow modulator tubes". Best I can determine is that the light output will vary with current but I can't find data sheet googling. If anyone has pinout and/or data I'd sure like to see it. I think it might be a mid 1960s item as my 1957 Sylvania manual doesn't show it. thanks -- 73 Hank WD5JFR Everyone replies, and yet you get no answers, R-1131C,D Max dcv 150 ma. 3-25 peak ma. 55 starting voltage 225 crater dia. .093 candelpower .2@25 ma. light color white What is the pin arrangement? -- --- Richard Knoppow Los Angeles, CA, USA |
For sale: Johnson Ranger....
For sale: Viking Johnson Ranger I bought it at a hamfest a number of years ago ('03?) when I was phasing into retirement and thinking of doing some kind of a restoration and had partial success with this. However, I have gravitated to a different kind of retirement ham hobby activity: total or almost total homebrewing. Thus, I'd like to find a new home for this Ranger. Caveats: It has some major internal problems, The guy before the guy I bought it from had totally torn out all of the CW circuitry. Also, the modulator was converted from 2x1614s to a pair of 2E26s. The modulation transformer is unknown, hermetically sealed (black pot), and of a brand name I've never heard of, and larger than the original, AND located on the opposite side of the chassis. This guy also converted the speech amplifier to a big mess and a phase inverter driver for the 2E26s. Also, as part of this job, he tore out the 5V4 (?) and left the 5R4 thus making it all 500-550 vdc and no low voltage. To get low voltage (for VFO and 6CL6s) he used power resistors in series with low voltage load and connected the top to the high voltage supply. He also moved the VR tube to where the crystal socket was. The power transformer and large choke seem like the original. At the time I aquired the rig, the electrolytic was dry (hum on carrier looke like 30% on a scope). I made a kludge repair on that and drove the 2E26s with an outboard hi-fi amp and actually had the rig on the air in several AM contacts on 160 and 75. The VFO does not jump frequency (I had this problem on an earlier Ranger many years ago) during or after warm-up, at least to the extent that I monitored this. I have observed a spur coming sometimes from the 6146 driver (in standby, swishing through the driver tune knob, get a herterodyne in a receiver). My own mods included two mini-toggle switches near the function switch (which needs cleaning and oil). The meter is OK, but the meter switch needs cleaning, too. I added a DPDT relay run off the 110 vac as part of a plan to change the manner of control of standby to transmit and back. Off the back panel I've added banana jacks for certain outside "port" connections, and one of those European-type female chassis plugs (three prong) that you see everywhere now for AC-in. I also tore out the power line filter (caps to ground & series inductances [I've gotten mild shocks off all of this old gear that put those things in under the 'old ways' GMPs, but I think they are basically useless]). The cabinet cosmetics are probably, IIRC, closest to "very good" in terms of few scratches/wear and barely any rust or corrosion anywhere (except some on some surfaces of the transformers/chokes). There may be some other minor issues but I can't think of them just now. So, you could look at this as a restoration to a less-than-original state or a spare-parts source. I paid $200 for this, but I paid too much. I guess its worth $50, now, and I think I don't want to ship it. I'm in southern Delaware and not in a hurry to get rid of it but would like to free up some space in my hamshack and get it into someone's hands who is wants to do the restoration I was going for (just AM capability), or whatever. So, I'm willing to drive one way about up to one hour in any direction to some "half-way" point away from my home. Manual reproduction comes with. There is also a Georgetown, DE hamfest on April 12, here (at Sussex Tech HS), and could meet someone there, too. If you are interested then email me and tell me your story (in case there is more than one person interested who can meet me within my one hour driving radius of Georgetown, DE). Respond to the email address originating from this post, but if I don't answer within 2 days, make a followup post and give your email address in that post (I have spam filters but simple email usually does get through). W4PON |
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