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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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AM modulation monitor
Hi Group
I am working on a BELAR, AMM-2A modulation monitor. Trouble is, someone before me was working on it and removed a 14 pin DIP chip. I suspect it is the dual voltage regulator, but no where can I find what type it should have. Anyone have any idea what it should have ? Source for a schematic ? Or any other tech info ? Regards Reed -- Looking for information on Marconi SMR-3 Marconi MSL-5 and Northern Electric R8119A receivers of WW 2. ARROW Research (Avro CF-105) Reed Park 252 Gauvin Road Dieppe, New Brunswick Canada E1A1M1 Amateur Radio V E 1 N U WW II, # 19 SET user Paraset replica builder and owner of a real one. |
#2
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"Reed Park" wrote in message ... Hi Group I am working on a BELAR, AMM-2A modulation monitor. Trouble is, someone before me was working on it and removed a 14 pin DIP chip. I suspect it is the dual voltage regulator, but no where can I find what type it should have. Anyone have any idea what it should have ? Source for a schematic ? Or any other tech info ? Regards Reed -- http://www.belar.com/ have you tried? |
#3
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TimPerry wrote: http://www.belar.com/ have you tried? Yes I have Tim. The monitor I am working on is no longer supported by Belar. It is obsolete as they say. Thanks for the reply Reed -- Looking for information on Marconi SMR-3 Marconi MSL-5 and Northern Electric R8119A receivers of WW 2. ARROW Research (Avro CF-105) Reed Park 252 Gauvin Road Dieppe, New Brunswick Canada E1A1M1 Amateur Radio V E 1 N U WW II, # 19 SET user Paraset replica builder and owner of a real one. |
#4
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On Thu, 09 Dec 2004 14:08:35 GMT, Reed Park wrote:
... ... Looking for information on ... ... Amateur Radio V E 1 N U WW II, # 19 SET user Paraset replica builder and owner of a real one. You realize, of course, that anyone searching in groups.google for that callsign will *never* get a hit on any of your posts? Pretty much ranks up there with the fellers that use some contrived ASCII code for a slashed-zero in their call. Again, a groups or web search by someone else will never get the "hit". 73 Jonesy -- | Marvin L Jones | jonz | W3DHJ | linux | Gunnison, Colorado | @ | Jonesy | OS/2 __ | 7,703' -- 2,345m | config.com | DM68mn SK |
#5
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Allodoxaphobia wrote: You realize, of course, that anyone searching in groups.google for that callsign will *never* get a hit on any of your posts? Pretty much ranks up there with the fellers that use some contrived ASCII code for a slashed-zero in their call. Again, a groups or web search by someone else will never get the "hit". 73 Jonesy Call me thick. But your comments were lost on me. I have no idea what you are talking about. 7 3 Reed -- Looking for information on Marconi SMR-3 Marconi MSL-5 and Northern Electric R8119A receivers of WW 2. ARROW Research (Avro CF-105) Reed Park 252 Gauvin Road Dieppe, New Brunswick Canada E1A1M1 Amateur Radio V E 1 N U WW II, # 19 SET user Paraset replica builder and owner of a real one. |
#6
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I think you were being admonished for having spaces in your sig ham call
sign..... What that has to do with your post, I have no idea either...... d:-)) |
#7
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On Thu, 09 Dec 2004 18:05:07 GMT, Reed Park hath writ:
Allodoxaphobia wrote: You realize, of course, that anyone searching in groups.google for that callsign will *never* get a hit on any of your posts? Pretty much ranks up there with the fellers that use some contrived ASCII code for a slashed-zero in their call. Again, a groups or web search by someone else will never get the "hit". 73 Jonesy Call me thick. But your comments were lost on me. I have no idea what you are talking about. 7 3 Reed Down in your (overly long :-) "-- " sig you have: Looking for information on ... ..... Amateur Radio V E 1 N U ..... ... Oh, I see now -- by trawling through The New And Improved (*NOT*) groups.google.com, I see _you_ , in fact, are VE1NU. Your composition there is a wee bit awkward: I thought you were "Looking for information" on three separate topics/subjects. But, my comment remains: A groups.google search by someone else 'interested' in VE1NU will never get a hit on any of your ng post(s) by searching for "VE1NU" (unless you meant it to be that-a-way.) I apologise for disturbing you. :-) 73 Jonesy -- | Marvin L Jones | jonz | W3DHJ | linux | Gunnison, Colorado | @ | Jonesy | OS/2 __ | 7,703' -- 2,345m | config.com | DM68mn SK |
#8
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"Reed Park" wrote in message ... TimPerry wrote: http://www.belar.com/ have you tried? Yes I have Tim. The monitor I am working on is no longer supported by Belar. It is obsolete as they say. Thanks for the reply Reed -- U1, U2, U3, U5, U6 are MC1741CP1 U4 is MC1468L U7 is ne536T U8 is MC1741SCP1 U9 not used U10 is MC3302P U11,U12, U13 are N74122A U14 is MC7494P do you have a fax no you can send me? i have complete documentation schematics, layout, parts list |
#9
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Hello, I have a manual and still using one of these monitors. Give me
an e-mail if you need something looked up. BTW the IC in question is NLA. |
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