Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs LinkedIn Crosswords Engineering Humor Kirt's Cogitations Engineering Event Calendar RF Engineering Quizzes USAF radar shop Notable Quotes App Notes Calculators Education Engineering Magazines Engineering magazine articles Engineering software Engineering smorgasbord RF Cafe Archives RF Cascade Workbook 2018 RF Stencils for Visio RF & EE Shapes for Word Advertising RF Cafe Homepage Sudoku puzzles Thank you for visiting RF Cafe!
everythingRF RF & Microwave Parts Database (h2) - RF Cafe

Channel Master Corporation
November 1951 Radio & Television News Article

November 1951 Radio & TV News
November 1951 Radio & Television News Cover - RF Cafe[Table of Contents]

Wax nostalgic about and learn from the history of early electronics. See articles from Radio & Television News, published 1919-1959. All copyrights hereby acknowledged.

As evidenced by this advertisement in a circa 1951 issue of Radio & Television News magazine, Channel Master has been producing commercial broadcast television and radio antennas and antenna accessories for a really long time. They are one of the very few companies still making such items, with RCA being another. A few years ago I bought a high gain Channel Master VHF-UHF-FM antenna for use with my vintage Alliance Model U-100 Tenna-Rotor. Both companies still sell remote control (wired) antenna rotators. Being an ardent over-the-air broadcast adherent, having a good old-fashioned steerable, multielement antenna is quite nice. I can dial in any TV or FM radio station within 50 miles, and some from over 100 miles away. I would like to have a similar setup for AM radio, but the antenna length gets out of hand at 530 to 1,700 MHz (525 to 1,705 MHz including 10 kHz channel spacing), equating to quarter wavelengths from 455 to 145 feet, respectively.

Channel Master Corp. Ad

Channel Master Corporation, November 1951 Radio & Television News - RF CafeTests Reveal Serious Mismatch in Stacked Yagis!

New Z-Match Yagi Achieves 100% Perfect Match To 300 Ohm Line, Single or Stacked.

Higher Gain On All Yagi Installations Accomplished By Adjustable Impedance And Wider Spaced Elements.

Now! Stack Yagis without extra stacking bars!

Mismatch eliminated! Now Channel Master proudly introduces the Z−Match Yagi - a new antenna that guarantees 100% perfect match in both single and stacked Yagi installations.

Single bay Yagi perfectly matches 300 ohms because of wider spaced elements. When Yagis are stacked, the center bars of the folded dipoles are removed and used as half−wave connecting rods. This reduces the impedance of each antenna, and automatically creates a perfect 300 ohm match for the complete stacked Yagi array. The Z−Match system, plus wide spacing, provide higher gain for Channel Master Yagis, single or stacked. No extra stacking bars result in lower cost.

Channel Master Corp.

Napanoch Road, Ellenville, N. Y.

Write for complete technical literature.

 

 

Posted September 14, 2020

Qorvo / Custom MMIC CMD242K4 GaAs Distributed Amplifier - RF Cafe
Windfreak Technologies Axiom Test Equipment - RF Cafe
About RF Cafe
Kirt Blattenberger - RF Cafe Webmaster
Copyright: 1996 - 2024
Webmaster:
    Kirt Blattenberger,
    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:  AirplanesAndRockets.com

spacer

Please Support RF Cafe by purchasing my  ridiculously low−priced products, all of which I created.

These Are Available for Free