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I saw another article or two indicating DC to an area of mostly textiles , and elevators in apartments. My guess would be that houses, apt units, would want the new gadgets that mostly ran on AC, but

PS, I am aware that the 6H6 was used as a modification in the SX28 and I have found and downloaded a circuit diagram for that modification as a reference. Possibly the SX17 circuit might be be similar

I have been working on a hallicrafters SX17 receiver and so far work is progressing (audio and detector circuit restored and interstage transformer replaced) although a bit slowly and cautiously.

I don't know. The articles I found don't make it clear. I can't even find a list of cities that had DC power. Evidently New York, or at least Manhattan did and parts of Boston. Power was

Jim, I just wanted to pinpoint that any AC power transmission system made of wires is ruled by transmission line theory. As such, some effects that are more easily seen in the RF domain, like SWR,

Richard RE: When my family visited the Canadian side of Niagara Falls when I was a kid they had 25Hz power. Way back Toronto wanted Niagara power to run street cars, and 25 cycles is more stable

"Back in the early years of these groups, computer memory and dial-up connections limited discussions.? Now these issues are trivial, digital memory is cheap and internet connections are quite

All the samples appear okay to me. 73, Gary – W6GVS Sent from Mail for Windows Sent: Wednesday, July 31, 2024 7:55 PM To: [email protected] Subject: Re: [HallicraftersRadios]

The 8R-40 information on the Web indicates that its chassis is laid out essentially the same as my S-40B with the exception that the 5Y3 is replaced by a solid state rectifier so the 8R-40 has only

Richard, just for the record, did they distribute DC to homes? Exactly where https://en.wikipedia.org/wiki/War_of_the_currents talks about it, and just says “customers”, with no mention about

If it is a matched lossless transmission line then there is no reflected power so the load receives 100% of the power!? Or at least that is the theory.? <grin>Jim Re: [HallicraftersRadios] S-38B

Good luck with the S-38B. My original one was accidently included in a bunch of stuff I had in storage and sold. It was in pretty bad shape (my fault). I have an S-38 in the queue for restoring.

Post up a couple of pics. Justin B. - KI5GKD

My original post was about the materials use for the S-38B tuning extension shafts. Having now pulled the chassis out of the radio, it turns out that the shafts, which were made of plastic, had been

It has a BFO pitch control, last knob on the right! :-) 73, -- Justin B. KI5GKD

DC is still used for specific long distance transmission lines. For instance the Pacific Intertie which runs at near a million bolts DC from The Dales in Oregon to Los Angeles. I have been at the

There is another reason to use DC on very long power transmission lines, and this one is not necessary obvious… On certain installations, and I believe that the Manitoba line is one, the length of

RE Plus – no synchronization problems!! Yes, the Long AC lines from remote generators tend to be unstable, and was a real big problem for AC. I tell mechanical people it is like having a

Yes – because DC has no “crest factor,” it makes greater efficient use of transmission. The peak, average, and RMS values for DC are all the same, reducing insulation requirements and

Oh, good to know a bit about that Bill. Now if I accidentally post a big image, and then go on line, and remove it, will it be purged from the system automatically, and it I delete the whole posting