From FB group Bell Telephone… a reply to Lucky225 I fixed the same problem. A single 1N4003 rectifier diode in series with the LED. If you think there’s too much flicker, add a 220 uF capacitor across the LED. The LED must have a resistor in series, start with 1000 ohms (brown, black, red, gold
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From my post to FB group Bell Telephone… We were having problems with one of our 4 wire point to multipoint datacomm circuits. Every morning at a little after 9 AM the circuit would go down. I called in the problem and a Pac Bell tech came out, but couldn’t find a problem. Next day,
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From comments on FB group Bell Telephone.. Ed Vaughn said: That story makes me ill. Why break what was perhaps the best-run machine in the world? I replied: Why? Well, it wasn’t the first time AT&T was forced to comply with government’s decisions. Like you said, it was a machine, and whether or not it
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Posted to FB Antique Telephones group as a reply to Kevin J. Fitzgerald I helped some students in our computer lab, and one high school kid, I think his name was Robert, was totally into phones. He had written a Basic program that printed a list out, with the various exchanges in the 714 area
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From my comment on the FB group Bell Telephone Pat Chicas I worked for RSCCD, which owns the Sheriffs Training Center. Man, I would have loved to slap their hands! The OCSD installed their phone system on prem, and we supplied the data circuits, so our patch cords and theirs shared the same patch panels
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From a 2017-06-10 comment regarding a Weston capacitance meter on FB group vintage test equipment Reminds me of the ” kicker” meters the phone techs used on the phone lines. There was a polarity switch that reversed the pair, and the tech could tell about the line from the kick the meter needle gave when
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I came across a schematic of a computer microphone from Circuit Exchange. This interested me because I have never had any success with using the microphone jack found on the back of desktop PCs. First off, the typical microphone jack seems to be a three conductor, 3.5 mm ‘headphone’ jack, with the tip being the
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For both of my cell phones, I receive far more junk ‘spam’ calls than legitimate calls. I have reported hundreds of calls to do not call.gov, and I’ve seen no letup in the number of calls, if anything it has become worse. I believe that the telemarketing co’s get my name from a list of
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The day after tomorrow is turkey day, and I have been trying to read some online things but I keep getting distracted. One article I found on Investopedia is about at&t, as its logo is now spelled, but was known as AT&T for more than a century. The article gives a bit of at&t’s history
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I ordered five of the Ravpower RP-PB08 portable chargers and after I got them and showed them to my friends, they suddenly remarked that they needed one of them. So my five have suddenly dwindled to just a few left and those may disappear, too. These are rated at 3200 mAh. That’s just a bit
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