radio telephone

radio telephone

Antique Radios : Collections

• The G8EPR Pye Museum - G8EPR pye telecoms museum incorporating.. emeregency services & radiotelephone museum of great britain
  [ Hits: 431 | Votes: 0 | Rating: 0 ]

• Play Things of Past - Vintage tubes, radios, parts, radio books and magazines, old telephones, speakers, phonographs, etc. Retail store in Cleveland, Ohio
  [ Hits: 3876 | Votes: 18 | Rating: 3.83 ]

• K-Com - comprehensive line of products for rejection of Radio Frequency Interference (RFI) to telephone equipment.
  [ Hits: 843 | Votes: 1 | Rating: 1 ]

• K-Y Filter Company - Modem Telephone Super Filters For HF and AM Radio Interference.
  [ Hits: 355 | Votes: 0 | Rating: 0 ]

• Nathan Stubblefield - Kentucky farmer invents wireless telephone! But was it radio? Facts and folklore about Nathan Stubblefield by Bob Lochte.
  [ Hits: 854 | Votes: 7 | Rating: 9.85 ]
• Nicola Tesla autobiography - Free pdf book on Nicola Tesla. He is the true unsung prophet of the electric age; without whom our radio, auto ignition, telephone, alternating current power generation and transmission, radio and television would all have been impossible
  [ Hits: 444 | Votes: 2 | Rating: 5.5 ]
• Invention Story of Radio - History of Radio from the invention of telephone and telegraph, to the invention of radio.
  [ Hits: 213 | Votes: 1 | Rating: 8 ]
• Evolution of Car Radios: From Marconi to Motorola - his historical account traces the development of car radios from Marconi's mobile wireless telegraph station on a steam engine vehicle in 1901 to Motorola's iconic car radio models in the 1930s. It highlights key milestones such as Alfred Grebe's radio-telephone experiments on Long Island and the introduction of Marconi-Phone 8 radios by the Daimler Company in England. The narrative explores technological advancements, including the transition from TRF to Super-Heterodyne circuitry and the integration of push-button controls. The evolution from vacuum tubes to transistors and compact discs is also documented, showcasing the continuous innovation in automotive entertainment systems.
  [ Hits: 51 | Votes: 1 | Rating: 1 ]

• Prestigecom - Australian dealer for UHF CB radios, Amateur Radio HF VHF Radios, GPS navigation systems, two-way radio, cordless telephones, radar detectors, marine electronics, amateur radio gear and many other consumer electronic products.
  [ Hits: 1273 | Votes: 5 | Rating: 6.88 ]

• DTMF decoder - A very easy to use program to decode DTMF dial tones found on telephone lines with touch tone phones. The DTMF Decoder is also used for receiving data transmissions over the air in amateur radio frequency bands.
  [ Hits: 7949 | Votes: 14 | Rating: 4.79 ]

• RadioTelephone Tutor - Helps you study for the Ham Radio & FCC GROL exams. Often times, test questions are worded in ways; that fool you. RadioTelephone Tutor drills on missed questions, till you know the answers backwards and forwards. Can take entire question pools in straight, or random order. Creates a practice test; which represents what you would be given in a real exam.
  [ Hits: 444 | Votes: 0 | Rating: 0 ]

• 16 DTMF Tone Generator Keypad App - This app will give you a 16 tone DTMF keypad and the ability to generate custom DTMF sequences, and set the duration and tone to silence ratio. Includes the characters 1234567890*# and the menu tones ABCD. You may enter a custom sequence via the keypad, soft keyboard, or speech if your device already has speech-to-text capability. This is basically a touch tone telephone keypad, which may be of interest to amateur ham radio repeater operators
  [ Hits: 729 | Votes: 4 | Rating: 7.75 ]

• Grounding HF Transceiver using Coax Cable - Improper grounding or earthing system can cause several unwanted RF interferences (RFI) to television sets, broadcast receivers, hi-fi sets and telephone sets. In this Article the author explain how to setup a proper radio shack grounding using coaxial cable and ceramic disc capacitor
  [ Hits: 1293 | Votes: 4 | Rating: 7.75 ]

• Lightning Protection : Protecting each I/O line - KB22UT Article on how protecting ham radio station and in particular I/O Lines such as AC power, coax cable, control circuits, telephone line.
  [ Hits: 771 | Votes: 0 | Rating: 0 ]