View allAll Photos Tagged "uhf"
The low-UHF band Würzburg radar was the primary ground-based tracking radar for the Wehrmacht's Luftwaffe and Kriegsmarine (German Navy) during World War II. Initial development took place before the war and the apparatus entered service in 1940. Eventually, over 4,000 Würzburgs of various models were produced. It took its name from the city of Würzburg. This was the most powerful Radar in the World at that time.
The 1944 Radar Museum is installed on the historic site of the German radar station Distelfink, near the town of Douvres-la-Délivrande. Through a permanent exhibition in two refurbished bunkers, visitors can discover the history of the radar station since its creation by the Germans in 1943 until the liberation during the Battle of Normandy.
Originally, the land occupied by the two bearing points forming the German radar complex is gradually returned to the farmers after the fighting. But the museum was born thanks to the efforts of Raymond Laville, president of the Veterans of Douvres-la-Délivrande: the commune acquired three hectares of land in 1992. Two years later, shortly before the 50th anniversary of the landing, the Memorial Of Caen receives as donation a radar Würzburg-Riese which is finally installed on the site. On June 6, 1994, the museum was inaugurated. It is managed by the commune of Douvres-la-Délivrande since 2006.
Many car parking Information boards around the city feature UHF antennas reporting parking space status to a central control.
Unknown monitoring system, possibly late sixties. This system contains many interesting elements from several companies. The HF section covered by Collins, and VHF/UHF by Communications Electronics Inc. (CEI). This may well be an early TEMPEST setup. Sales Photo, Unknown Photographer
For Watkins-Johnson history, with hardware visit
This Sulphur-crested cockatoo was all puffed up, and cling onto our scanner/UHF radio antenna while the wind was blowing.
(Como uma música, uma foto, podem mudar radicalmente a vida de alguém...)
Sonhos na Estrada de Sintra - UHF
Poisa o teu braço no meu
Ajuda-me a seguir
Ao virar esta esquina
Há um paraíso por descobrir.
Não quero que assistas a esta lenta bebedeira
Porto-me como uma criança faminta
Vem embriagar-te comigo à beira
Ah de um barco, copo de absinto.
Mas dança, dança, dança p’ra mim
Dança p’ra mim
À noite, esta noite.
Chegou o momento de parar a farsa
Estou farto de conduzir esse animal
Sincero dizem no uso da palavra
Fotografia página jornal.
E se este for o teu sonho
A brisa do tempo mais secreto
O sonho rasga as entranhas
E os chacais já andam muito perto.
Mas dança, dança, dança p’ra mim
Dança p’ra mim
À noite, esta noite.
O assassino ergueu-se das travas do sucesso
E conduziu um carro azul por entre círculos de mulheres
E esse assassino eras tu
Roçando o imenso quente prazer de provocar
Esse assassino eras tu mulher, mulher… mulher do meu encanto.
Quero o meu nome
Ou o teu nome.
The low-UHF band Würzburg radar was the primary ground-based gun laying radar for the Luftwaffe and the Wehrmacht Heer (German Army) during World War II. Initial development took place before the war and the apparatus entered service in 1940. Eventually over 4,000 Würzburgs of various models were produced. It took its name from the city of Würzburg as the project leader liked geographical names.
In January 1934, Telefunken met with German radar researchers, notably Dr. Rudolf Kühnhold of the Communications Research Institute of the Kriegsmarine and Dr. Hans Hollmann, an expert in microwaves, who informed them of their work on an early warning radar. Telefunken's director of research, Dr. Wilhelm Runge, was unimpressed and dismissed the idea as science fiction. The developers then went their own way and formed GEMA (Gesellschaft für Elektroakustische und Mechanische Apparate) eventually collaborating with Lorenz on the development of the Freya and Seetakt systems.
By the spring of 1935, GEMA's successes made it clear to Runge that the idea was workable after all, so he started a crash program at Telefunken to develop radar systems. With Lorenz already making progress on early warning devices, Runge had the Telefunken team concentrate on a short-range gun laying system instead. Management apparently felt it to be as uninteresting as Runge had a year earlier and assigned it a low priority for development. By the summer they had built a working experimental unit working in the 50 cm band that was able to generate strong returns off a target Junkers Ju 52. By the next summer, the experimental set-up had been developed into a prototype known as the Darmstadt, which offered a range accuracy of 50 m at 5 kilometres (3.1 mi), not nearly enough for gun laying. Attitudes changed in late 1938, when a full development contract was received from the Luftwaffe.
The resulting system, known as the FuMG 62, as well as the prototype system FuMG 39T Darmstadt were demonstrated to Hitler at Rechlin in July 1939. The Telefunken team developed an accurate system based on a klystron microwave tube operating in the range of 54–53 cm (553–566 MHz)—an extremely short wavelength for the time—with a pulse length of 2 microseconds, a peak power of 7–11 kW and a pulse repetition frequency (PRF) of 3,750 Hz. It had a maximum range of about 29 kilometers (18 mi), and was accurate to about 25 metres (27 yd) in range. Würzburg used a 3-metre (3.3 yd) paraboloid dish antenna, which could be "folded" along the horizontal midline for travel on a wheeled trailer. The system was first accepted into service in 1940 and 4,000 of this basic layout were delivered.
RAF Upper Heyford Air Show 1990.
Built in the USA in 1943 and registered 43-13064. to the RAF as FT323. To the Netherlands Air Force as B-19. To the Dutch civil register as PH-SKK. To the UK register as G-AZSC on 07Apr72.
White noise in the art studio, on a new tiny tv I found at a sale (poor Ken!) - hardly as tall as some of my paintbrushes! :)
One of my hobbies: Ham (Amateur) Radio. This is my Alinco DJ-580T VHF/UHF radio
365: The 2025 Edition Week 8 Theme: Hobby
Hardsuit 'Scout'
Environment: Woodlands
Primary: Long-range rifle
Secondary: Machine pistol
Melee: Long blade
Accessory: UHF radio
The low-UHF band Würzburg radar was the primary ground-based gun laying radar for the Luftwaffe and the Wehrmacht Heer (German Army) during World War II. Initial development took place before the war and the apparatus entered service in 1940. Eventually over 4,000 Würzburgs of various models were produced. It took its name from the city of Würzburg.
Taller Acción en Cadena
UHF. Acción en Cadena.
Taller de vídeo-collage con Fermín Jiménez Landa dirigido a jóvenes de entre 13 y 18 años.
Fermín Jiménez Landa es artista. Su trabajo parte de lo cotidiano y próximo para explorar ciertas ideas abstractas propias de la física con el objetivo de trasladarlas de una manera eufórica al terreno doméstico, diario y rutinario.
Action Chain Workshop
UHF. Action in Chain.
Workshop of video-collage with Fermín Jiménez Landa directed to young people between 13 and 18 years.
Fermín Jiménez Landa is an artist. His work starts from the daily and the near to explore certain abstract ideas typical of physics with the objective of moving them in a euphoric way to the domestic, daily and routine.
Foto/Photo: Carlos Granados
TALLER CON FERMÍN JIMÉNEZ LANDA EN CA2M
___________________________________________________________________
Enlaces: WEB CA2M | FACEBOOK CA2M | YOUTUBE CA2M | TWITTER CA2M
If you find an error, corrections are welcomed.
This started out as a project to make a t-shirt. The t-shirt maker required an Encapsulated Postscript (vector) file. This is a montage of cobbled together images. Some of the above was created from traced raster images from my photos. The knobs and shadows all had to be horsed with to get to this image. The virtual "Frequency 9" label is vector art.
At the top is the radio control head used by the operator to adjust settings. A twenty to thirty five pound box housing the electronics and tubes was mounted elsewhere in the vehicle and connected via a garden-hose-sized cable. The speaker and microphone are pasted below. These had maybe 3 tubes in their transmitter and everything else was transistors.
FREQUENCY 9 GE MASTR PROFESSIONAL UHF RADIO: At left is what's supposed to look like a 1975 Santa Clara County ambulance radio made by now-defunct General Electric Mobile Radio. It might be what you saw in a Fields, Palo Alto Ambulance, Bigleys, AAA, San Jose Ambulance, or the other companies whose names I can't recall. This was before paramedics. Everything was on one channel. If someone was bitten by a dog in Los Altos Hills, an ambulance in Gilroy, (at the other end of the county), could hear the dispatch. When an ambulance crew called the hospital to give report, everyone heard that, too. "Wheeler, Three Zero Six, inbound with a 57-year-old male, victim of a fall from a horse..." Radio users had to set the 1-2-3-4 switch to the correct setting for the geographic location of the ambulance. The ultra-high frequency (UHF) transmitter produced 60 watts. It was a basic, functional, single-channel system. Even in 1975, it was almost 24-hour, non-stop radio calls. Monday at 2am? There were people talking on the radio.
CALFIRE MOTOROLA SPECIAL PRODUCTS MOTRAC RADIO: In the 1970s, CalFire was known as CDF: California Division of Forestry. It was part of the Resources Agency. Like the Highway Patrol, they had radios custom built to match their growing, statewide system.
Their radios might be made by low bidders RCA, General Electric, or Motorola. The buttons, and names on them, looked the same regardless of who made the radio. They might be a different shaped button but they were labeled as here. Nowadays this is called "user interface." If you needed "District, Tone 4" you press the D button (District channel) and the 4 button (Tone 4) whether it was an RCA or Motorola radio. This was true until Midland microprocessor-based radios of the mid-1980s. "District" is now "Region."
I do not own this CDF Motrac or any other old CDF equipment. I may have had a MASTR Professional, or possibly a MASTR II, repair manual but these seem to have disappeared.
Both of these systems used an elderly technology called, "tone burst." I think the State tones were 1,800 Hertz, 1,950 Hertz, 2,100 Hertz, 2,250 Hertz, and 2,552 Hertz. Each mountaintop site listened for its assigned beep tone. If you selected 3, the radio would make a roughly 2-second, 2,100 Hertz beep every time you pressed the push-to-talk button. "[beeeeep] San Andreas, Chief Fourty Four Hundred responding." After an hour of busy radio traffic, your ears would be ringing with a 2,100 Hertz tone. Our engineers put a notch filter that knocked the ambulance network (Frequency 9) burst tone down to about one tenth of its original volume while having no effect on voice.
You may recognize the microphone and speaker on the CalFire radio at right. These were standard Motorola parts you'd see on television shows like Dragnet, Emergency, or Adam 12. Both the City and County of Los Angeles used a standard Motorola control head less complicated than the CalFire model shown.
By the way, the t-shirt came out perfectly.
The good thing about a legacy system is that you have one…
— Homer R. Wagner MD, Ph D
Please do not copy this image.
Journalism Grade Image.
Source: montage 5,200x2,700 TIF file.
www.youtube.com/watch?v=KFRUnn3-C7w
A LÁGRIMA CAIU
Tu sabes bem, que o amor se perdeu
Não o faças refém, foi meu e teu
Foi o que foi, o que nós deixamos
Inocentes os dois, culpados ficamos
A lágrima caiu, sem tu saberes
Por ti caiu, a última vez
A flor da saudade, que nasce selvagem
Daninha se espalha, por toda a paisagem
Por todos os locais, em todos os cheiros
Há histórias reais, de um cativeiro
A lágrima caiu, sem tu saberes
Por ti caiu, a última vez
Um dia talvez, possamos lembrar
De novo talvez, falar sem gritar
A lágrima caiu, sem tu saberes
Por ti caiu, a última vez
A lágrima caiu, sem tu saberes
Por ti caiu, a última vez
UHF I A LÁGRIMA CAIU
"La Pop End Rock" - 2003
RAF Upper Heyford, 08 September 1991. Scanned from my own slide.
Nose art reads 'Have Gun, Will Travel'
Columbia, Houston, UHF comm check
Columbia, Houston, UHF comm check
Columbia, Houston, UHF comm check
.
.
.
These massages remained unanswered by shuttle Columbia for ever same as other messages sent to the flight crew of Ukraine flight 752... In memory of 176 people we lost.
Heartbreaking 💔
Song by Taijin Kyofusho
The evpatoria report
Winegard HD8200U Platinum HD VHF/UHF Antenna It’s The Top Selling
Availability: Usually ships in 24 hours
Eligible For Free Shipping
Winegard HD8200U Platinum HD VHF/UHF Antenna Review
If you want for the top a good idea Winegard HD8200U Platinum HD VHF/UHF Antenna and after that...
blogonlineshop.xyz/winegard-hd8200u-platinum-hd-vhfuhf-an...
Upper Heyford, 08 September 1991. Scanned from my own slide.
Coded ER with 15 Sqn, RAF Lossiemouth .