What is Feld Hell?
Welcome to the Feld Hell Club website. Our club is dedicated to Hellschreiber, or Hell, a unique, HF digital mode for sending and receiving text using facsimile technology in which the characters are not decoded, but “painted” graphically on a screen for the operator to interpret.
How do you decode Hellschreiber?
Hellschreiber lets you decode Feld Hell transmissions on your iPhone iPad, and iPod Touch. Just set your iPhone or iPad near a radio, tune in a transmission, and view the decoded text. The slider lets you adjust the contrast of the received text. There is also a volume indicator.
What does CQ stand for in ham radio?
I wish to contact any amateur station
Morse Code (CW)+ The best way to start with CW is to tune around until you hear someone calling CQ. CQ means, “I wish to contact any amateur station.” When answering a CQer you should zero beat the other ham’s frequency. That means setting your transmit frequency as close to theirs as possible.
What does SSB mean in ham radio?
Single Sideband
SSB (Single Sideband) is an obscure but very important way to communicate via radio. It is used primarily for two-way voice communication by ham radio operators, aircraft and air traffic control (ATC), ships at sea, military and spy networks. Occasionally some shortwave broadcast stations use this format.
How do you break into a ham radio conversation?
If you’d like to join in or “break” in to an ongoing conversation or QSO as its called, the first thing you want to do is LISTEN. Make a note of the callsign of one or all in the QSO. Then, WAIT for the transmitting station to hand it back to the next station. Between the break in their QSO, you would say your call.
What is a Hellschreiber?
Hellschreiber (Also known as Feld Hell or just Hell) is a teleprinter system developed in the late 1920’s by Rudolf Hell, a German inventor. Hellschreiber (Also known as Feld Hell or just Hell) is a teleprinter system developed in the late 1920’s by Rudolf Hell, a German inventor.
What is the frequency range of Hellschreiber?
There are several modes of Hellschreiber, the most popular being a single-tone version call Feld-Hell, an on-off keyed system with 122.5 dots/second, or about a 35 WPM text rate. FH has a narrow bandwidth of about 75 Hz.
What is Feld Hell and slow Hell?
Feld Hell (and it’s immediate variants) and Slow Hell use On-Off Keying, where Feld Hell 80 (Rudolf Hell’s last original Hell mode, designed in the 1970’s) uses 2- FSK modulation and the FSK Hell modes use 2-DMSK (Differential Minimum Key Shifting). The signal is transmitted in columns.
What is a hell printer?
Hellschreiber (Also known as Feld Hell or just Hell) is a teleprinter system developed in the late 1920’s by Rudolf Hell, a German inventor. Hell physically prints characters onto the screen, unlike other modern teletype modes which encode and decode signals.