Page updates + News Rudolf Hell: history and patents The "Hell system" - how it works "Presse Hell"
bullet Overview
bullet News agencies using Hellcasts
bullet Early "Presse Hell" models
bullet "T empf 12" printer
bullet "T empf 14" printer
bullet "T send 18b" keyboard sender with printer
bullet Radio receivers used with "Presse Hell"
"Feld Hell"     (Feldfernschreiber)
bullet My Feld-Hell machine
bullet The Feld-Hell machine
bullet Electronic circuitry and schematics
bullet Components and construction
bullet Design evolutions
bullet The RV 12 P 4000 tube
bullet Bandwidth and duty-cycle
bullet Performance
bullet Markings on Feld-Hell machines
bullet Production volume
bullet Accessories
bullet Equipment photos
bullet Historical photos
bullet Original telegrams
bullet Radios used with the Feld-Hell
bullet Interfaces to a transceiver
bullet Maintenance & repair
bullet Hell "Feld Morseschreiber"
Other Hellschreiber models:
bullet Overview
bullet Feld-Hell derivative "Tbs 24b"
bullet Post-war Feld-Hell built in Hungary
bullet Hellschreibers built by the Hell Co.
bullet Hell 72 "GL" and 73 "AGL"
bullet Hell-80
bullet Other Siemens-built Hellschreibers
bullet Siemens Hellschreiber peripherals
bullet Original Siemens Hell equipment prices
bullet Hellschreibers from other manufacturers
Articles, documents, presentations
bullet Hellschreiber articles & documentation
bullet Presentations
bullet Industry & Technology 1920-1945
Hellschreiber fonts Sounds from Hell 3D photos Modern "software" modes (FM, MT, etc.) Hell software & PC-interfacing:
bullet Hellschreiber software
bullet Soundcard interfacing
My Hell WebCam Homebuilt Hell-printers
bullet My Hell-printer
bullet Other homebuilt
bullet Hell/CW filters
Paper tape, ink, felt inkrollers Links:
bullet Hellschreiber
bullet German 1920s-1945 radio technology
Annual Hell Meeting Frequencies, nets, museums, beacons Contact Frank / N4SPP Comments from visitors

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