View allAll Photos Tagged "uhf"
VHF, UHF and microwave antennas for public safety voice communications and mobile data terminals (MDT).
Radio Center houses transmitters and repeaters for the City of Rochester and Monroe County, NY Police, Fire, EMS and other public safety agencies. It is located on Cobbs Hill (640 ft above sea level).
City Police, County Sheriff and town PDs are using about 30 P25 digital UHF channels.
City and County Fire using VHF, County EMS is VHF.
No 9-1-1 dispatching is done from this location, it is a primary transmitter site and radio installation/repair shop only.
NY State Troopers, NY Dept of Environmental Conservation (law enforcement division), medical examiners, probation and state university police have access to this system for interoperability.
I wanted to get one last photo of this in operation before the FCC shuts it down next year. It has no external antenna input, and even if it did, hauling around a converter box defeats the whole purpose of the Watchman.
I bought this on Canal Street in NYC over 20 years ago. At the time it was a marvel of miniaturization. It has an actual CRT, The electron beam hits the front surface of the phosphor rather than usual rear. The screen is angled and slightly curved to correct for the odd geometry. The set runs on 4 AA cells and gets pretty good battery life considering. It has a "sound only" mode that turns off the CRT for extra battery life.
Some time in the early 1990s Sony replaced this model with one that had an LCD screen.
VHF, UHF and microwave antennas for public safety voice communications and mobile data terminals (MDT).
Radio Center houses transmitters and repeaters for the City of Rochester and Monroe County, NY Police, Fire, EMS and other public safety agencies. It is located on Cobbs Hill (640 ft above sea level).
City Police, County Sheriff and town PDs are using about 30 P25 digital UHF channels.
City and County Fire using VHF, County EMS is VHF.
No 9-1-1 dispatching is done from this location, it is a primary transmitter site and radio installation/repair shop only.
NY State Troopers, NY Dept of Environmental Conservation (law enforcement division), medical examiners, probation and state university police have access to this system for interoperability.
Channel Master 4228 UHF 8-Bay HDTV Antenna (with lightning rod). This is getting the job done for me on the 2nd story roof, with the transmitters around 38 miles away.
Antenna rotors aren't worth it IMHO, because they fail after a year or two. Amplifiers on the mast are also prone to failure. Also unless you're careful, they can make things worse instead of better. Stick to the basics: an outdoor antenna up high, with good quality cable and as short a run as possible.
Actually, you'd get a lot of the same channels with an indoor antenna.
So long cable! (Actually, it has been decades since I had cable.) See:
www.cancelcable.com (No affiliation -- I just like their ideas!)
Car: Austin-Morris Mini City.
Engine: 848cc in-line 4.
Year of manufacture: 1980.
Date of first registration in the UK: 25th January 1980.
Place of registration: Liverpool.
Date of last MOT: No online MOT history.
Mileage at last MOT: No online MOT history.
Date of last change of keeper: 20th April 2023.
Number of previous keepers: 9.
Date taken: 14th May 2023.
Album: Classics in Cardiff May 2023
¿Quién no ha ido alguna vez por la calle escuchando música e imaginando estar dentro de un videoclip? Durante el mes de marzo UHF invitó a un creador a desarrollar un taller de cuatro sesiones de duración en donde explorar las posibilidades del videoclip. A lo largo del taller trabajamos partiendo de procesos caseros con el sonido y la imagen para crear nuestros propios videos musicales.
Sergio de Pablo, creador y músico residente en Madrid, ha colaborado en múltiples proyectos artísticos y audiovisuales. Su trabajo trata de mezclar diferentes estrategias creativas a través del humor.
UHF es una plataforma para jóvenes de 16 a 21 años donde trabajar con el audiovisual desde lo colectivo.
Who has not ever gone down the street listening to music and imagining being in a video clip? During the month of March UHF invited a creator to develop a four-session workshop in which to explore the possibilities of the video clip. Throughout the workshop we work from home processes with sound and image to create our own music videos.
Sergio de Pablo, creator and musician residing in Madrid, has collaborated in multiple artistic and audiovisual projects. His work tries to mix different creative strategies through humor.
UHF is a platform for youngsters from 16 to 21 years old where they work with the audiovisual from the collective.
Fotografías/ photographs: Andrés Arranz
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Enlaces: WEB CA2M | FACEBOOK CA2M | YOUTUBE CA2M | TWITTER CA2M
This is what I do on 'vacation'. I play radio. This is my HF/VHF/UHF radio. Also my home made 'paddles' to send Morse Code. Another one of my hobbies. Amateur Radio. This one is for you JZ.
Long Range UHF RFID Android Handheld Terminal For Warehouse Inventory,1D/2D Barcode Scanner Engine with Pistol Grips and Cradel www.b2s.pm/17XVEb
AY73 UHF : DAF XF 6x4 Recovery Truck of Dynes Motor Group from Erith, South-East London.
TRUCKFEST SOUTH-WEST 2024
Bath & West Showground, Shepton Mallett.
31-08-2024
The low-UHF band Würzburg radar was the primary ground-based gun laying radar for the Luftwaffe and the Wehrmacht Heer during World War II. It entered service in 1940 and over 4,000 were built.
This example was originally installed on the Norwegian island of Vigra, Ålesund, but was moved after the war to Nordlysobservatoriet in Tromsø. After being stored at Gardermoen it was moved to Sola and restored. It remains on display as part of the Flyhistorisk Museum, Sola, Norway.
10th June 2017
See www.qsl.net/pa0fbk/hampage_uk.htm
A highly usable portable antenna made from plain RG-58 for temporary stations. It can be rolled up for easy storage.
After making it, I immediately made a contact on 2 meters, 5 watts with PI4DEC, a station partaking in a "locator contest", about 25 kilometres away.
Unfortunately I haven't been able to test it properly on 70cm but I was able to work a friend at about 5 kilometres, 59 of course :)
I made a small choke by bundling the coax of the BNC connecting cable in some turns and securing it with tape, this improved the reception somewhat.
Radio Center from the other side of Cobbs Hill Reservoir - 144,000,000 gallons of drinking water.
VHF, UHF and microwave antennas for public safety voice communications and mobile data terminals (MDT).
Radio Center houses transmitters and repeaters for the City of Rochester and Monroe County, NY Police, Fire, EMS and other public safety agencies. It is located on Cobbs Hill (640 ft above sea level).
City Police, County Sheriff and town PDs are using about 30 P25 digital UHF channels.
City and County Fire using VHF, County EMS is VHF.
No 9-1-1 dispatching is done from this location, it is a primary transmitter site and radio installation/repair shop only.
NY State Troopers, NY Dept of Environmental Conservation (law enforcement division), medical examiners, probation and state university police have access to this system for interoperability.
The Nordic ID AR85 fixed area reader brings powerful, automated UHF RFID performance with multiple connectivity options. This fixed area reader contains Nordic ID NUR2-1W module and sophisticated antenna solution that allows to cover up to 120 m² of floor space at a reading speed of up to 1000 tags/s. Now even hard-to-read tags will be easier to detect. Thanks to its integrated computer 3rd party applications can be installed and run on reader. Nordic ID AR85 is ideal for efficiently monitoring a designated area.
SELECTV KWHY TV 22 ADD BY RALPH6343 (4RETROCHANNELNETWORK)
SelecTV was a subscription (Pay TV) television service formed in 1976, and first broadcasting in 1978 [1] The service focused entirely on televising movies, and ended in 1991. The service originally allowed subscribers to pay only for programs "selected" during the month, with the first several minutes free (the decoder box included a phone hook-up to transmit information back to the billing office). It later went to a flat-fee basis.
SelecTV was transmitted via scrambled signal from a local UHF television station. A decoder box was required to unscramble the signal and permit normal viewing. SelecTV was available in at least three markets: in Milwaukee on WCGV, channel 24 (now MyNetworkTV), KWHY channel 22 in Los Angeles (now a Spanish-language independent), and WWSG channel 57 in Philadelphia (now CW affiliate WPSG). On WWSG, the service utilized the gated-pulse scrambling technique for the video and using technology that would later be used to enable Multichannel television sound moved the audio to a different subcarrier, freeing the standard audio channel for use as a "barker" (sales promotion) channel. In 1984, New Jersey based WHT began offering SelecTV on its affiliated television stations after it stopped programming its own network, but the affiliation with SelecTV would not last long, as within a year, WHT ceased operations. This occurred following a massive financial collapse, as a result of a majority of their subscribers defecting to cable television services which offered more channels, including pay-tv services like HBO and Showtime.
In 1983, the service went national via satellite and was later purchased by Starion Entertainment, which eventually dropped the SelecTV branding in the late 1980s and renamed it Starion Premiere Cinema. The service ceased operations in 1991.
Unlike rival service ONTV, SelecTV specialized in airing movies and did not air sports events. Foreign films were often shown in dubbed and subtitled versions, indicated in the monthly programming guide. In the early '80s, the Los Angeles affiliate simulcast some shows from Z Channel. During Oscar season in the Los Angeles market regular programming would often be preempted for special "Academy Consideration" screenings of films in contention for Oscar nominations. By 1985 (if not earlier), SelecTV aired softcore versions of pornographic films in their "Adult Theater" programming block.
Another thing making the channel unique was their policy of screening R-rated movies throughout the broadcast day, at a time when other pay services restricted R-rated content until after 8pm. SelecTV also transmitted its C-band satellite "in the clear" (unscrambled) for a longer time than rivals HBO and Showtime.
By 1984, OnTV and SelecTV merged, and some sports were broadcast on the combined service. Most of those events were simulcast from Prime Ticket, which was then a new regional sports network.
In 1986, SelecTV produced one original, non-sports series, a half-hour comedy, Channel K. [2] The title of the series was chosen to mock one of SelecTV’s early competitors, Z Channel. Each half-hour episode was composed of shorter segments, averaging five minutes, spoofing television programming. There were two comedy spin-offs from Channel K, both also airing in 1986, presented in ten minute segments in order to be used when fill time was needed between movies. The first was Bachelor Pad, where a self-proclaimed ladies man gave not-so-helpful tips to single men looking to be more successful at dating women. The second, Handy Dan, gave do-it-yourself lessons that always led to disaster. In 1987, Channel K returned to the network briefly with the new title, Son of Channel K. Three VHS volumes, including episodes of both Channel K and Son of Channel K, and segments of Bachelor Pad and Handy Dan, were released to the Home Video market in 1989 and 1990, as the SelecTV network, eroded away by the advancement of cable TV, went dark.[3]
Antenna I designed and built for US channels 14-60 (470-752mHz). Width of the bowtie dipole is 16 inches, with a 60 degree flare angle. The wide dipole ranges from over a half wavelength at the lowest frequency, to nearly a full wavelength at the highest, giving it a remarkably uniform impedance around 250 ohms. Spacing to the reflector chosen to raise impedance to around 300 ohms. Reflector is sold at Target as a shelf for a modular storage system.
Boeing has completed the Passive Intermodulation test of its UHF hosted payload with the company’s newest satellite. 702MP model satellite IS-22 is being built for Intelsat. In this photo, IS-22 and its UHF hosted payload are installed in the test chamber.
Boeing provides this photo for the public to share. Media interested in high-resolution images for publication should email boeingmedia@boeing.com or visit boeing.mediaroom.com. Users may not manipulate or use this photo in commercial materials, advertisements, emails, products, or promotions without licensed permission from Boeing. If you are interested in using Boeing imagery for commercial purposes, email imagelicensing@boeing.com or visit www.boeingimages.com.
This is a shot of my home made vhf and uhf antenna / aerials, Pleased to have worked DX
on 2 meter's today ssb CT1HZE on the Algarve, Portugal
Distance 1,831km's or 1,138miles!
Sporadic E Propagation at approx 11:40 hrs very good signals 5/9 plus!
Vy 73....de...Dave....2W0DAA / GW4JKR
The master antennas for New York's TV stations, and most of its FMs as well. The mast was actually much more cluttered at the height of TV's analog era, from 1960 to 1974, when many of the antennas moved to the World Trade Center. All moved back after 9/11, some on shated antennas. Most of those later went down: first, when analog TV was turned off, and second when many antennas were removed either to re-expose the building's art deco architecture, or to move stations to more modern antenna designs.
[Fast forward to December 2021] Nearly all of what's shown here is now gone. The T-shaped Alford antennas flanking the observation deck are gone, clearing room for taller windows. The barrell-shaped UHF below the Alfords is gone but the ones above I believe are still there. So are the master and mini-master FM antennas and the 7-11 TV antenna.
This photo shows the very small Final RF PA Board mounted on the main pa unit board
73, de Dave 2W0DAA / GW4JKR
Vista aerea parcial de la Ciudad de Guayaquil saliendo del Aeropuerto Jose Joaquin de Olmedo rumbo Miami
Two of my shack favourites, an Icom IC-2400A dual band transceiver & a Uniden Bearcat BC590XLT scanner. I used the top radio to contact the Space Shuttle Atlantis, mission STS-74 to the Mir Space Station in the 90's, it was quite a wake up call in the early morning hours to hear it flying overhead & surprisingly enough, I talked to it! You never know until you try, what an incredible hobby!!!
CN Tower Facts:
Building#112537
Cost: $63 million
Completed in 1976
Located at Front Street West
Zoned: Railway Lands
Entertainment District
Height: 553 m (1,815 feet)
Toronto's Telecommunications Tower
-The CN Tower has UHF, VHF, Microwave, TV and fixed mobile communications facilities.
-The tower is comprised of two main observation decks: the lower and larger SkyPod at 1,150 ft (351 m), and the higher but smaller Space Deck at 1,465 ft (447 m).
-The SkyPod consists of three levels: at 342 m (1,122 ft) is an outdoor observation deck and an indoor portion with a glass floor, at 346 m (1,136 ft.) is "Horizons Café" and another indoor observation deck, and at 351 m (1,150 ft) is a revolving restaurant named "360".
-The revolving restaurant makes a complete rotation once every 72 minutes.
-The Space Deck is the world's highest public observation deck.
-The initial proposal for the project consisted of 3 towers linked by elevated bridges.
-The tower consists of 40,522 cubic meters of concrete, 129 km of post-tensioned steel, and 5,080 metric tons of reinforcing steel. The tower is estimated to weigh 132,080 metric tons.
-The Concourse level houses the Maple Leaf Cinema, the Edge Arcade, and the 12,500 square foot Marketplace souvenir shop.
-The elevators travel at a speed of 20 ft (6 m) per second, reaching the Skypod in just under one minute (58 seconds).
-The world's tallest slip-form structure began cement pouring on February 12, 1973 and finished on April 2, 1975.
-The CN Tower is a member of the World Federation of Great Towers.
-For all of its 553 meters, the shaft penetrates only 6 meters into a total 15 meter foundation.
-World's tallest self-supporting structure from April 2, 1975 when it overtook the Ostankino Tower until 2007 when it will be overtaken by Burj Dubai.
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This matching pair of Transceivers are for 433Mhz, 70 cms band, & 144Mhz and Two meter band
FM SSB CW Multimode Operation, Pwr: 5 watts Low, 25 watts Hi
73, ....de...Dave...2W0DAA / GW4JKR
Receiver/transmitter RT-178/ARC-27, main component of the AN/ARC-27 UHF communications radio in the KC-97L. This equipment is mounted on the left side of the cockpit, just ahead of the cockpit bulkhead.
The AN/ARC-27 utilized 54 tubes, weighed 71 pounds, and produced 9 watts of RF power from 225.0 -399.9 MHz.
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AN/ARC-27:
members.home.nl/a.k.bouwknegt/index_bestanden/ARC27.htm
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Boeing KC-97:
en.wikipedia.org/wiki/Boeing_KC-97_Stratofreighter
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Castle AIr Museum:
This is a very nice top quality instrument made in Japan, The external sensor has " N " type sockets fitted,
Will read down to 100 mw - 150watts max
73, de Dave...2W0DAA / GW4JKR
Wreckage of US Navy AD-6 Skyraider near Napa, California.
This is what remains of the RT-178/ARC-27 UHF radio receiver/transmitter unit from one of the Skyraiders.
An example of this radio, intact, can be seen here:
Photographed June 1996.
(Scanned 35mm color negative)
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On August 26, 1954, two US Navy AD-6 Skyraiders crashed into Mount St. Helena in Napa County, California, killing both pilots.
The planes and pilots were from Attack Squadron 195 (VA-195), which at the time was based at NAS Moffett Field. AD-6 135254 was piloted by LCDR Hubert L. Worrell, and AD-6 135264 was piloted by LTJG Roger W. Tillson, Jr.
According to the US Navy aircraft accident report, the flight, which had filed a VFR (visual flight rules) flight plan, entered overcast as it approached a mountain ridge significantly higher than its cruising altitude. Both pilots started to climb, but both aircraft struck the mountain approximately 800 feet below the peak.
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LTJG Roger W. Tillson, Jr., USN:
www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=14910119
LCDR Hubert L. Worrell, USN:
www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=38601802
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Douglas A-1 Skyraider (National Naval Aviation Museum)
www.navalaviationmuseum.org/attractions/aircraft-exhibits...
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VA-195, 1950s (Wikipedia):