Archive for November, 2017:

2017-11-28 Royal 500 And 3.5mm Phone Jack

I finally got around to spending some time online to search for a replacement jack for the corroded one in the Zenith Royal 500 I’m working on (#473430).  I had to destroy the jack to get the nut off, the whole jack was green.  The hole was so corroded the plug wouldn’t fit.  I ordered

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2017-11-22 Don’t Feed Homeless – Don’t Enable Them

From FB group Orange Talk Comment on Thanksgiving Day “Don’t feed the homeless, it just enables them.”  So let me get this straight: “Don’t enable them (homeless)” By not feeding them, they are going to go away?  Go away to  someone else’s neighborhood and steal to get something, like the kid’s bike, so they can

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2017-11-21 Phones And Line Levels 

From FB group Bell Telephone… In the days of analog phones like 500s and 2500s, Ma Bell had the phone matched to the line, so whatever the line length was, it compensated and the signal levels were very uniform, it worked great. Then came along the full duplex digital system, and everything went to hell.

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2017-11-19 Royal 510 PCB hairline crack 

For FB group Vintage Transistor Radios  Speaking of fuzzy garbled audio…  I won another auction for a Zenith “Royal 510” which I’d never heard of.  It turned out to be a Royal 250.  The seller got no bids at all, so with less than a minute left I bid the minimum ten dollars. I got

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2017-11-15 Zenith Royal 755 Vintage Radio Excellent 

From FB group Vintage Transistor Radios  I’m flabbergasted.  I received the Zenith Royal 755 I won last week – auction link is below.  the seller said repair/parts, but I’m amazed at how good a shape it’s in!  I suspect that it was in storage for most of its life.  The leather case is nearly new,

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2017-11-14 Closed Minded People And Politics

From FB group thread discussing C. K. refusal to pledge allegiance to the flag. Rich Gallego By your your way of thinking, then almost no one should vote.  Because most of those who think they should vote because they believe they’re informed should also not vote.  They’re just as much MISinformed as they are informed.

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2017-11-10 Built Phase Shift Oscillator From YouTube 

I watched the YouTube video of Radiofun232 testing the PSO that he built according to the schematic he showed.  I modified it somewhat.  My objective was to decrease the frequency down to 400 Hz. I used three 0.1 uF capacitors and a 0.56 uF instead of the 0.47 uF.  Instead of 1k I used 2.2k.  I replaced the

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2017-11-08 Using More Than 2 Phones As Intercoms

From FB group Bell Telephone… While I see a discussion about connecting phones in a party line, I’d like some input on this.  It’s easy to connect two phones because they can be connected in series, and both phones have to be off hook.  But more than two phones, they can’t be connected in series

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2017-11-04 Zenith Royal 500 Fixed Part Way

I got another Zenith Royal 500 at auction, I think it was $20 but the shipping cost a lot.  I got it out and tried it out.  I found the battery contacts were in good condition.  The battery compartment was missing the cover.  It came with a leather case, so that will stop the batteries

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2017-11-04 Change a Princess Phone Light To LED

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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