When I was growing up, he was the market engineering director for one of the two or three local FM conglomerates, and through the past 30 years or so, they kept getting gobbled up by larger corporations until probably 90% of the AM/FM radio audience was owned by either Clear Channel or CBS-then-Entercom-now-Audacy.
These groups also cut back substantially not only on local radio talent (there used to be shows through the day run by local DJs, now you're lucky to get a morning show and maybe an afternoon drive show), but also on the radio engineers deployed to the stations.
A lot is due to automation and ease of IP audio (and popularity of alternative formats like YouTube and Podcasts), but it's a bit of a sad, slow death of something I remember more fondly as a kid.
I recently had my Dad take me on a tour of a 'megawatt' (ERP) FM tower site in St. Louis (we posted a YouTube video of it) and it's incredible the engineering that goes into getting a signal (in the case of this site, 10 signals) into an FM antenna system 300m above the earth!
this is what always amazed me. we used to drive by/through the local antenna farm in my area, and it always impressed me as a kid that these towers was where the radio/tv signals originated. driving by, you could see the bases of some of them were on a single point of an inverted pyramid which revealed the importance of the guide wires. these were the first structures that i understood to be designed to move. then learning stories of the power of the signal, the amount of electricity to create that power, the fact that the AM signals could change their wattage at night to be more powerful, that video was an AM signal with the audio being FM all multiplexed together.
then there was the time that a military jet clipped the guide wires forcing the 2 occupants to eject and causing the station on that tower to go off the air. or the much more gruesome time a local teenager climbed one of the smaller towers, thinking he could recreate an action movie scene, attempted to slide down the guide wires. the attempt was not successful as it sliced off his fingers causing him to free fall catching a lower wire which created 2 halves of him. in case anyone thinks of trying this, don't.
after all of that, wound up becoming a video engineer.
•Alternate spelling to guy-wire
It is however guying the tower.
guy; 3rd person present: guys; past tense: guyed; past participle: guyed; gerund or present participle: guying
secure with a line or lines.
"it was set on concrete footings and guyed with steel cable"
> guy (n.1)
"small rope, chain, wire," 1620s, nautical; earlier "leader" (mid-14c.), from Old French guie "a guide,"...
pretty wild what circles language may run in.
Man on internet tries to correct things outside his control, news at 11.
Today, a random person on the internet took it upon themselves to let the rest of the internet know that someone was doing something they did not like. Themselves, in all things being perfect, decided it was high time to correct the pedantic use of a word in a way that differs from their personal use. In other news, the internet yawned, and went about its day.
I mean, just do a quick Google image search. Search "guide wire" and then "guy wire". Which one returns images of towers?
I'm sorry you took offense to me sharing information with you. I definitely didn't intend to make you upset by letting you know those cables are almost universally called a different term.
People use cables or ropes to guide long poles or similar structures into position and then tie them down for stability. Cranes of are of course easier, but not always available such as when replacing a sailing ships mast at sea.
Guy wires are often used similarly if for example wind loads are an issue during construction their tension need to be adjusted appropriately.
This is a view that is common among English speakers. Among many German native speakers it is instead common to love to analyze words and tell why some word is wrong even if it is actually in common use sometimes for decades.
I was under the impression these towers were AM because such a long wavelength is needed for AM radio stations that the whole tower is the antenna, with an insulator between the point of the inverter pyramid and the ground.
FM towers are not like this; the wavelength is much shorter and the tower is not part of the antenna. The antenna is a short element at the top insulated from the tower.
Happy to be corrected.
Apparently there's a deep 25'x25' slab of concrete underneath that holds the socket the tower rests on.
That said, David Sarnoff was a nasty opportunistic litigious man and frankly the way he treated Armstrong, Philo Farnsworth and others was despicable.
Another inventor Sarnoff stole from was Philo Farnsworth (https://en.wikipedia.org/wiki/Philo_Farnsworth). He didn’t kill himself like Armstrong but was broke and forgotten when he died in 1971.
While Sarnoff did try to kill FM as a threat (more NIH than anything) The move to 88-108 had some other good technical reasons - the higher frequency is less prone to skip, multipath, and tropospheric ducting. When the band opens on 6m (where the original band was) stations hundreds of miles away can swamp local traffic. Because Television isnt subject to the capture effect, there are less issues with it with analog TV. The interference of remote stations at the frequency it happens on low band VHF, would have sunk FM in the long term.
AM Radio Bandwidth. The original allocated channel bandwidth for AM allowed closer to 11-12kc of audio bandpass, with 8-10 being pretty common - the quality was more a function of how the lines feeding the network traffic to the station and the station to transmitter link were conditioned, and often well into the 70's the STL link was a leased conditioned line from the telco.
I do not disagree that RCA used its market position as holder of most of the radio related patents to shut out Armstrong, and it was/is despicable - but not all of the bad thind that happened were just malicious to be malicious.
Assuming this was done in 1938, this would cost the equivalent of $5.6 million today. And it was made obsolete by the frequency change just 7 years later.
With that said, 88 to 108 MHz fits a lot more stations than 42 to 50 MHz would have. The 42-50 would have had to expand somehow.
If they stuck with 42-50 MHz, they'd probably have to be creative, like have New York City use horizontal polarization and Philadelphia use vertical polarization (although now we know that doesn't make a huge reduction of interference).
If they expanded it downward, it would touch what's now the high end of the shortwave bands. Might have been some interesting propagation. Sometimes when the conditions are right, a 25 MHz signal can travel the globe during the daytime.
During the peak of sunspot cycle 22 in 1989-91, a great F2 layer propagation indicator here on the west coast US was New Zealand TV channel 1 audio on 50.75 MHz (+/- 10 kHz). If you could hear the wideband FM audio on 50.75 MHz, it was almost guaranteed you could make a ham radio contact with New Zealand at 50.110 MHz.
AM talk radio revived that old spirit in the 1990s.
We see similar things happening nowadays. After the corporate takeover of Twitter, the old guard has been dispersed. The Twitter of years past will be remembered as a creative and diverse place…going forward it will not be the same.
It's split into two parts, with the second part later in the same video, here: https://youtu.be/LMxate9gegg?t=1350
YouTube search.. leaves a bit to be desired these days.
Whatever/whoever comes with the most amount of £££. Same old, same old.
JUVE Patent website presents comments from UPC on the subject: https://www.juve-patent.com/news-and-stories/people-and-busi...
Edit: fixed the second link attribution to JUVE Patent, and removed speculation regarding trivialization of the issue by UPC.
Insert "(nearly a third of a billion in today's dollars)" there.
I don't know the actual figure.
Also I like Damn Interesting Week podcast that discusses fun news articles, they have so much fun with them.
This of course has gone away with digital TV.
The stations are WNYZ-LD New York City, KZNO-LD Los Angeles, WRME-LD Chicago, KBFW-LD Dallas/Fort Worth, KBKF-LD San Jose, WTBS-LD Atlanta, WDCN-LD Washington DC, KEFM-LD Sacramento, WEYS-LD Miami, KXDP-LD Denver, KGHD-LD Las Vegas, KMCF-LD Fresno, and WPGF-LD Memphis.
The FCC has issued an NPRM to decide if these stations will continue.
I tend to listen a lot to the HD2+ streams, as advertisers seem to not be interested in paying for ad spots there (which I guess could be indicative of poor adoption, at least beyond the main HD streams).
According to him, Sarnoff and Armstrong were friends at some point and RCA financed the development of FM radio initially although they just wanted a more efficient AM network.
Perhaps after he traveled back in time our future government(s) outlawed that sort of thing.