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Travel Back In Time To Buy A Good TV Antenna

The technical side of broadcasting. Think IBOC is a sham? Talk about it here! How about HDTV? Post DX reports here as well.
k8jd
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Location: Commerce, MI

Re: Travel Back In Time To Buy A Good TV Antenna

Post by k8jd » Mon Jan 18, 2016 7:01 pm

A long Yagi can get nearly the gain of a Rhombic and you can rotate it a lot more ealily if you want to look elsewhere. Rhombics are great for point to point HF work.



Arthur Mometer
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Location: Radar Room

Re: Travel Back In Time To Buy A Good TV Antenna

Post by Arthur Mometer » Sat Jan 30, 2016 10:16 pm

It's amazing the variety of antennas that were in use in the late 1950s and early 1960s. I walked to school and remember many of the antennas along the way. Some were brought back by the Allied Catalog pictures. I didn't know who the manufacturers were at the time. Our next door neighbor had a 2 Bay Inline High Low Amphenol with an Alliance Tenna Rotor. It was on a guyed mast, probably 20 feet high above the Cape Cod roof. One windy day, I came home from school to see it sprawled over the front porch. They had it fixed that time. I remember that they had the kits or parts on the truck I peered into. We were the first on our block to have a tower. I think that was because of the rusting stains and multiple guyed antennas falling in the neighborhood. Ours was a Par 5, a 2 Bay Inline High Low with two High Band Directors on each bay, plus a 5 Element Channel 6 Yagi. There was a knife switch to change antennas. Some people had 4 separate 5 Element Yagis for Channels 2, 4, 6, and 7, and a 4 Antenna switch. After there were 8 VHF channels you could see, people would try all kinds of combinations of the 4 antennas to optimize the performance on a particular channel. In our area, reception of some channels was very area dependent. I didn't know at the time that small terrain ridges on the order of 100 feet a couple miles from and parallel to rivers and streams were the reason for this, and the inexplicable areas where the UHF stations came in well all the time 45-50 miles away.


"I'm meteorologist Arthur Mometer."

"Those of you who think you know everything are very annoying to those of us who do."

"Lies have to be repeated and repeated to be believed. Truth stands on its own merit."

Arthur Mometer
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Joined: Wed Oct 22, 2008 9:52 am
Location: Radar Room

Re: Travel Back In Time To Buy A Good TV Antenna

Post by Arthur Mometer » Tue Oct 30, 2018 3:52 am

This thread had a huqe number of views, so I'm going to repost this recent link.

http://www.kvhf.com/flyers.htm
Last edited by Arthur Mometer on Tue Oct 30, 2018 3:53 am, edited 1 time in total.


"I'm meteorologist Arthur Mometer."

"Those of you who think you know everything are very annoying to those of us who do."

"Lies have to be repeated and repeated to be believed. Truth stands on its own merit."

Rich
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Location: Illinois
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Re: Travel Back In Time To Buy A Good TV Antenna

Post by Rich » Tue Oct 30, 2018 6:14 am

A day or so ago, Arthur Mometer posted that a high power broadcast station might be able to be received on the Moon. Here is a short response I had put together and tried to post but couldn't, as the site was having some issues at that time:

A UHF signal of one million watts ERP at the peak of its major lobe produces a field intensity of about 1 V/m at a horizontal distance of 3 miles. The distance from Earth to the Moon is about 240,000 miles, so, by inverse-distance attenuation the field at the Moon would be about 12.5 µV/m. But that would occur only for very brief intervals each day as the Earth rotates, when the Moon was fully "illuminated" by the main lobe portion of the UHF transmit antenna radiation pattern.



Arthur Mometer
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Re: Travel Back In Time To Buy A Good TV Antenna

Post by Arthur Mometer » Thu Nov 01, 2018 4:31 pm

I was about to post a reply also when the message board disappeared. When the article I read was published long ago, WJFM was still 500000 watts. It also alluded to all the "stars" having to be in alignment and proper rotation for this to work.


"I'm meteorologist Arthur Mometer."

"Those of you who think you know everything are very annoying to those of us who do."

"Lies have to be repeated and repeated to be believed. Truth stands on its own merit."

Arthur Mometer
Posts: 747
Joined: Wed Oct 22, 2008 9:52 am
Location: Radar Room

Re: Travel Back In Time To Buy A Good TV Antenna

Post by Arthur Mometer » Fri Dec 28, 2018 6:49 pm

TV Antenna Sales are way up over the last few years due to price gouging cable companies. That's the unvarnished truth in my opinion.

https://www.latimes.com/business/hollyw ... story.html


"I'm meteorologist Arthur Mometer."

"Those of you who think you know everything are very annoying to those of us who do."

"Lies have to be repeated and repeated to be believed. Truth stands on its own merit."

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