I've wondered what the hourly cost is to transmit at those levels even 50k. That seems like a lot of power.
You could probably assume it was 50% efficient, so it would be consuming 1000kWh of power every hour it was on the air.
It's hard to find electricity rates for that time period, so I'll use this article:
https://www.fortnightly.com/fortnightly/2015/12-0/cost-electricity-roaring-20s-minneapolis
Which averages out to about 9.14 cents / kWh. So for every hour the transmitter was on the air, it consumed about $91 in electricity. Rates were probably cheaper in more-developed Cincy than in Minneapolis, but that's all I have.
In today's cash, that's ~$1540/hr of operation, for almost $37,000 per day of operation. That doesn't include the army of technicians and engineers to keep it on the air.
Those ED commoricals must pay well.
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