HELLSCHREIBER BIBLIOGRAPHY

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Introduction

Feld Hell literature:   
Dansk
Deutsch
English
Español
Français
Nederlands
Norsk
Polski
Rysski
Svenska

Hell-80 literature
 
Home-made Hellschreibers   

Other Hell literature
Deutsch
English
Nederlands

Computer software
Computer interfaces

Hell Contest   

Hell Activity Day

The Beacon Project

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Introduction

A number of the downloadable documents have a built-in viewer, which only works under Windows 9x.
The multi-page .tiff files require you to download the Wang Imaging system file called "img_us.exe" from  1 ,  2 ,  3 ,  4  or   5   (instructions ). This system is a plug-in for Windows 95.

Kodak subsequently bought the rights to the Wang software, and now sells it as a commercial package. This can be downloaded from Kodak. Unfortunately, this software now costs money.

However, Bob VE3TOK says that you can use the free "Quicktime" player (plugin) by Apple.
Adobe Acrobat 4.0 can also read multi-page tiff files (but Adobe Acrobat Reader 3.0 will not read them).

The Hellschreiber system
was invented by Dr. Rudolf Hell
Wikipedia Biography
who celebrated his 100:th birthday on 19 December 2001
and departed this life on 14 March 2002
There were obituaries in The Times, Berliner Zeitung and Die Welt

A special QSL card was issued on the centenary of Dr. Hell's birth

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Feld Hell - literature:

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DANSK

Amatörradio Teletype
Karsten Jensen og Kenneth Christensen
Kapitel 11, HELL, side 122 til 124
Udgivet af E.D.R's FORLAG ApS

==============================
DEUTSCH

Betriebsanweisung für der S-H Hellschreiber
(Hellschreiber Wiring Diagram)
(Taken from inside the Hellschreiber case)
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Der Siemens-Hell-schreiber
H. Stahl
Telegraphen- und Fernsprech- Technik, Bd 22, s. 291 - 295 (1933)
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Der Siemens-Hell-schreiber
H. Schulz
Telegraphen- und Fernsprech- Technik, Bd 30, s. 52 - 57 (1941)
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Fernschreibtechnik, 4. Aufl.
F. Schiweck
C. F. Winter'sche Verlagshandlung, Prien 1962
----------
Goetsch, H. W.: Taschenbuch für Fernmeldetechniker.
From the radio museum in Lucerne, Switzerland, founded by Ernst Erb (HB9RXQ, EA8BGN)
Principles of the Hellschreiber
Hellschreiber wiring diagram
----------
Apple-Hell-Schreiber
Klaas H. J. Robers PA0KLS, ins Deutsche übersetzt von DJ5QM Bernd Nienhaus
RTTY 4/87 p. 6 und 7
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D 758/1, Der Feldfernschreiber Vom 1.4.41 (Berlin 1941)
(Gedruckt in der Deutschen Zentraldruckerei)
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Hellschreiben - Nostalgie oder Realität
Helmut Liebich DL1OY,
Amateurfunk
File name: helldoc4.exe
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Hellschreiben - Nostalgie oder Realität?
Liebich, H. DL1OY
Funkschau", Sonderheft Spezial, November 1990, pp. 58-61
Description: in German; history, description and operation of the various Hell systems. One of THE articles on Hell.
Filename: hell-8.exe
File size: 573 kb
Filename: hell-8.tif
File size: 481 kb
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Der SH Feldschreiber, Bedienungsanleitung
Siemens-Halske AG, Wernerwerk, Berlin-Siemensstadt
Abteilung für Telegrafengerät, TE 77/25
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Siemens Fernmelde Technik,
Der Siemens-hell-schreiber
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Siemens Fernmelde Technik,
Stand der Siemens-hell-fernschreibtechnik,
Von R.Zimmerman
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"Literaturverzeichnis "Hellschreiben"
Liebich, H. DL1OY /DARC
Description: in German; listing of Hell-related literature references
Filename: hell-18.exe
File size: 301 kb
Filename: hell-18.tif
File size: 209 kb
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Hell-Fernschreiben mechanisch, mit Soundkarte u. dem HamComm-Modem
DH7UAF/Hell
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RTTY, Amtor, Hell, SSTV/FAX m. HammCom-Modem
DH7UAF/HC


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ENGLISH

The Hellschreiber, a rediscovery
Hans Evers, PA0CX (DJ0SA)
HAM RADIO December 1979, page 28 - 32
Description: in English; description by PA0CX=DJ0SA about principles, operation, experience with original Feld-Hell system. (Also see file hell-2.exe for the original 1977 article in Dutch).
One of THE articles on Hell.
HTML file, or file name: hell-28.exe
File size:
Filename: hell-28.tif
File size: 365 kb

Comments:
K6KA March 1980
W6DKZ March 1980
W1HR March 1980
G5XB September 1980
---------
Hellschreiber
Conklin, E.H., Plant, H.B.
Ham Radio, March 1980, p. 6
Description: in English; letters to the editor, in response to the "Hellschreiber - a rediscovery" article by PA0CX, (see file hell-28.exe)
Filename: hell-9.exe
File size: 184 kb
Filename: hell-9.tif
File size: 92 kb
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Hellschreiber, what it is and how it works
S.A.G Cook, G5XB
Radio Communication April 1981
Description: in English; title speaks for itself, includes discussion of pulse & bandwidth. One of THE articles on Hell.
Filename: hell-10.exe
File size: 560 kb
Filename: hell-10.tif
File size: 468 kb
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The Hellschreiber System
RSGB Teleprinter Handbook PP 11.1 - 11.3
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BITS & BYTES
Mike Richards G4WNC
Practical Wireless, June 1997, p 70-71
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The Hellschreiber (An article on the LMT system)
Richard König
Wireless World, 30 March 1939
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Let's see you in Hellschreiber
Murray Greenman ZL1BPU
QST, January 2000, pp 52-54
File size: 95 kb
Filename: greenman.pdf
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Channel Islands Occupation Society
Feld Hell and Enigma machines in use
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Marius Rensen - Hellschreiber pages
Rensen

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World Cup Hell
Football celebration spills over into ham bands
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PA0SE works Hellschreiber on 136 kHz
The World of LF. News, 14/10, G3YXM
------------------
LA9IHA Ottar Kvindesland
Electronics homebrew, computers, QSL card generator program, Hellschreiber, etc.

==============================
ESPAÑOL

Telegrafia Hell (1 parte), by EA4BVZ and EA3DPB
Revista de URE, Vol. XXXIV, No. 362, pp. 317-320, 1983
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Telegrafia Hell (2 parte), by EA4BVZ and EA3DPB
Ventajas y desventajas del sistema Hell en comparacion con RTTY
Revista de URE, Vol XXXIV
No. 363, pp. 386-387, 1983
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Telegrafia Hell, by EA3DPB
Revista de URE, Vol. XXXV, Marzo, pp. 172-173, 1984
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Telegrafia Hell: El teletipo Siemens-Hell 80, by EA3DPB
Revista de URE, Vol XXXV, Abril, pp. 232-234, 1984
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Hellschreiber con tarjeta de sonido: by Valentin Alonso, EA4CBH
==============================
FRANÇAIS

Pascal F1ULT has created a French language mirror site of Murray ZL1BPU's site, containing translations of many of the original pages.
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ITALIANO
==============================
NEDERLANDS

De hellschrijver: een herontdekking
Hans Evers, PA0CX (DJ0SA)
Electron, jaarg. 32, s. 297 - 303 (1977)
Description: in Dutch, description by PA0CX=DJ0SA about principles, operation, experience with original Feld-Hell system.
(Also see file hell-28.exe for 1979 translation that appeared in Ham Radio magazine).
One of THE articles on Hell.
Filename: hell-2.exe
File size: 502 kb
Filename: hell-2.tif
File size: 410 kb
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Hellschrijven wint terrein
Rollema, D.W.
Electron, February 1983, pp. 74-76
Description: in Dutch; description of Hell system and description of several home-built mechanical Hell-printers
Filename: hell-11.exe
File size: 472 kb
Filename: hell-11.tif
File size: 380 kb
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Hell naar de maan en terug
Rollema, D.W., PA0SE
Electron, April 1982, pp. 182-183
Description: in Dutch, description and results of an Earth-Moon-Earth (moon- bounce) experiment with original Hellschreibers
Filename: hell-4.exe
File size: 169 kb
Filename: hell-4.tif
File size: 77 kb
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Hell op de twee-meter-band in alle modes
Dikker, H.G.
Electron, pp. 82-83
Description: in Dutch, description of operation and experience with Siemens 72GL Hellschreiber (start-stop synchronization, not Feldhell)
Filename: hell-5.exe
File size: 332 kb
Filename: hell-5.tif
File size: 240 kb
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Micro-hell
Robers, K.H.J. PA0KLS
Electron, July 1980, pp. 389-392
Description: in Dutch; description of the Feld-hell program for Apple-II developed by PAoKLS
Filename: hell-19.exe
File size: 370 kb
Filename: hell-19.tif
File size: 278 kb
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Schrijftoestel voor ontvangst van hell- of morsesignalen
M.J. Schuten, PA0MJS, Waalre
Electron, Mei 1982, p 239 - 245
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Hell-zendertje voor zelf-nabouwen
E.H. Leefsma, PA0KTV, Eindhoven
Electron, December 1982, p 645-647
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Hell, Nieuws voor hellers Rollema, D.W. PA0SE
Electron
Description: in Dutch, brief descriotion of general differences between Feld- Hell and "GL" system, and availability of refurbished GL units in Germany
Filename: hell-6.exe
File size: 211 kb
Filename: hell-6.tif
File size: 119 kb
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Hell-zendertje voor zelf-nabouwen Leefsma, E.H.
Electron, December 1982, pp. 645-647
Description: in Dutch, description and schematics of Hell character generator implemented in hardware.
Filename: hell-7.exe
File size: 335 kb
Filename: hell-7.tif
File size: 243 kb
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Papier voor Siemens-Hell-Feldschreiber
"DJ2HN levert hellschrijvers"
Rollema, D.W. PA0SE
Electron, December 1997, p. ?
Description: in Dutch; announcement of annual Hell contest and Hell-net times & frequencies; availability of paper for original Hellschreibers
Filename: hell-23.exe
File size: 146 kb
Filename: hell-23.tif
File size: 54 kb

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NORSK

HELL for ZX Spectrum 48 k
Sigfus Jonsson LA0BX (TF5SJ)
SARTG NEWS No. 70 p. 22 - 23 (1989)
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HELL for ZX Spectrum 48 k. Programbeskrivelse og oppkobling
Sigfus Jonsson LA0BX (TF5SJ)
SARTG NEWS No. 70 p. 24 - 25
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PC-HELL
Sigfus Jonsson LA0BX (TF5SJ)
SARTG NEWS No. 77 p. 21 - 23 (1990)
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PC-Hell
Sigfus Jonsson LA0BX (TF5SJ)
QTC, 1990, pp. 21-23
Description: in Norwegian, with English translation by A. Lovell SM6MOJ; description of HAMCOM-type modem for Hell
Filename: hell-22.exe
File size: 298 kb
Filename: hell-22.tif
File size: 206 kb
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Hell? - hvor? - når?
Sigfus Jonsson LA0BX (TF5SJ)
SARTG NEWS No. 98 p. 8 (1996)
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HS
Sigfus Jonsson LA0BX (TF5SJ)
SARTG NEWS No. 98 p. 31 (1996)
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PC-Hell: The Weekender
Sigfus Jonsson LA0BX (TF5SJ)
Weekender
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LA6NCA - GERMAN WWII GERETE PHOTOS - 3
LA6NCA's collection of Wehrmacht equipment, including a Feld-Hell Hellschreiber and an Enigma geheimschreiber. The entire collection takes a while to download.

LA6NCA also has photographs of the components of a 1938 Hellschreiber

==============================
POLSKI

HELL QSO
Piotr Herko SP5XSB
Magazyn Krotkofalowcow QTC 6/1998, p 162.
---------------------
Nowa emisja Hell?
Piotr Herko SP5XSB
Polski Zwiazek Krotkofalowcow Nr 2 (421)/1998
ISSN 1230-9990

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RYSSKI

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SVENSKA

Siemens Hell - skrivare för fältbruk
Siemens-Halske AG, Wernerwerk
Berlin-Siemensstadt, TE 11/31
-----------
Hellskrift
Karl-Gustav Strid, SM6FJB
QTC 9:1980, p. 276 - 279 (and SARTG NEWS No. 77 pp. 24 - 29)
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Hellskrift på amatörbanden
Karl-Gustav Strid, SM6FJB
QTC årg. 52, p. 366 (1980)
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Fältfjärrskrivare T. typ. 58, system Siemens-Hell
Karl-Gustav Strid, SM6FJB
SARTG NEWS Nor. 36 p. 9 - 15
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Renovering av Siemens Hell Feldfernschreiber
Andrew Lovell, SM6MOJ
QTC 11:1985 (och SARTG NEWS No. 56 p. 41 - 43)
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Micro-Hell med Apple 2
Klaas H. J. Robers PA0KLS (övers. SM6KST)
SARTG NEWS No. 49 p. 22 -
--------------
Att ansluta Hellskrivaren till Tx-Rx
Andrew Lovell, SM6MOJ
SARTG NEWS No. 54 p. 42 -
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Hastighet och bandbredd vid Hell
Andrew Lovell, SM6MOJ
SARTG NEWS No. 55 p. 44 -
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Audiofilter för Hell
Andrew Lovell, SM6MOJ
SARTG NEWS No. 58 p. 26 -
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Hell med Mitsubishi FM-25
Andrew Lovell, SM6MOJ
SARTG NEWS No. 59 p. 48 -
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Hell med FT-290R
Andrew Lovell, SM6MOJ
SARTG NEWS No. 60 p. 49 (1986)
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Hellskrift på Commodore C-64
Andrew Lovell, SM6MOJ
SARTG NEWS No. 65 p. 27 - 28
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Hellskrift på Commodore C-64
Andrew Lovell, SM6MOJ
SARTG NEWS No. 66 p. 32 (1988)
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Hellskrift med mikrodatorer (Olivetti M-10, NEC PC 8001, Tandy TRS-80 Mod. 100)
Hans Kreuzer DL1AN (Translated and edited by Andrew Lovell, SM6MOJ)
SARTG NEWS No. 71 p. 37 - 41 (1989)
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HELL-spalten. Vi labbar med filter
Andrew Lovell, SM6MOJ
SARTG NEWS No. 74 p. 44 (1990)
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HELLSPALTEN. Hell med C-64
Andrew Lovell, SM6MOJ
SARTG NEWS No. 83 p. 34 - 35 (1992)
==============================

Hell-80 literature:

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DEUTSCH

Siemens-Hell-Schreiber 80
Bedienungsanleitung
Siemens AG, April 1967
Draft copy

==============================
ENGLISH

A brief introduction to Hell-80
Andrew Lovell SM6MOJ
(Unpublished)

==============================
SVENSKA

Siemens-Hell-skrivare 80
Karl-Gustav Strid, SM6FJB
SARTG NEWS No. 56 p. 12 - 22 (1985)
==============================

Home-made Hellschreibers

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DEUTSCH

"Selbstbau eines Feld-Hellschreibers"
Bremer, E.
RTTY No. 2, 1981, pp. 8-12. 1981 RTTY
Description: in German; description of a home-built mechanical Hell-printer
Filename: hell-27.exe
File size: 309 kb
Filename: hell-27.tif
File size: 217 kb

==============================
ENGLISH

Frank N4SPP's Hellschreiber
Frank provided most of the .tiff files on this web site.
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Home-made Hellschreiber by VK2DSH

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NEDERLANDS

PAoMJS maakte zelf een mechanische hellontvanger
Dick Rollema PA0SE
Electron, October 1980, pp. 557-559
Description: detailed description of a home-built mechanical Hell-printer
Filename: hell-21.exe
File size: 300 kb
Filename: hell-21.tif
File size: 208 kb
==============================

Other Hell literature:

==============================
DEUTSCH

Feld-Hell mit dem Olivetti M-10
Hans Kreuzer DL1AN
cq-DL 3/1988

==============================
ENGLISH

Micro-Hell
K.H. Robers PA0KLS (Translated by Andrew Lovell SM6OJ)
Electron July 1980
-----------------
Seven-Frequency Radio-Printer
L. Deveaux and F. Smets
Les Laboratories, Le Matériél Téléphonique, Paris
(condensed)
-----------------
Long delay echoes on tape
(Technical Topics), RadCom January 1998
-----------------
American BC-918B machine
File size: 60 kb
Filename: new-3.gif
-----------------
Marius Rensen
has included a Hellschreiber history page on his fax web site.

==============================
NEDERLANDS

Radiomodem voor Hell, Morse en RTTY Fockens, T.W.H. PA0KDF
Electron, Oct/Nov/Dec 1986, pp. 490-493/557-56/645
Description: in Dutch; description and schematics of modem with tuning indicator, and interesting automatic detection-threshold adjustment scheme
Filename: hell-24.exe
File size: 985 kb
Filename: hell-24.tif
File size: 893 kb
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De eerste hellschrijver van PA0MJS
Electron October 1980
PA0CX
------------------
Schrijftoestel voor ontvangst van hell- of morsesignalen
Schouten, M.J.

Electron, May 1982, pp. 239-245
Description: in Dutch; description of home-built mechanical Hell-printer and its motor rpm control
Filename: hell-25.exe
File size: 694 kb
Filename: hell-25.tif
File size: 602 kb
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Schrijven over Hellschrijven
Grauwelman, C.L.A.
Electron, February 1984, pp. 77-80
Description: in Dutch; description of a Hell-character generator in CMOS
Filename: hell-26.exe
File size: 387 kb
Filename: hell-26.tif
File size: 295 kb
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Apple-Hell
Robers, K.H.J. PA0KLS
Electron, November 1979, pp. ?
Description: in Dutch, describes results of Feld-Hell software for Apple II developed by PA0KLS
Filename: hell-1.exe
File size: 162 kb
Filename: hell-1.tif
File size: 70 kb
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Micro-Hell
K.H.J Robers PA0KLS
Electron July 1980
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Hellschrijven, "Reflecties"
Rollema, D.W. PA0SE
Electron, November 1981, pp. 591, 592
Description: in Dutch; photos of get-together of European Hell-operators, and Hell-contest announcment
Filename: hell-12.exe
File size: 193 kb
Filename: hell-12.tif
File size: 101 kb
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Hellschrijven, "Reflecties"
Rollema, D.W. PA0SE
Electron, August 1982, p. 404-405
Description: in Dutch; brief description of Hell system and of Hell-net times & frequencies
Filename: hell-13.exe
File size: 200 kb
Filename: hell-13.tif
File size: 108 kb
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Hellschrijven, "Reflecties"
Rollema, D.W. PA0SE
Electron, August 1980, p. 485
Description: in Dutch; brief comparison of Feld-Hell and "GL" system
Filename: hell-14.exe
File size: 166 kb
Filename: hell-14.tif
File size: 74 kb
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"Hellschrijven, "Reflecties"
Rollema, D.W. PA0SE
Electron, July 1987, p. ?
Description: in Dutch; brief description of various Hellschreiber implementation options (mechanical vs electronic)
Filename: hell-15.exe
File size: 212 kb
Filename: hell-15.tif
File size: 120 kb
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Het Hell-verreschrijfsysteem
ten Wolde, R.
Electron, June 1977, p. 330
Description: in Dutch; brief description of Hell system
Filename: hell-16.exe
File size: 152 kb
Filename: hell-16.tif
File size: 60 kb
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Laagfrequentfilter voor Hell en CW
Anon.
Electron, June 1981, p. 301
Description: in Dutch; description, schematic, and tuning of a 5-stage LC-filter for Hell audio (-3dB bandwidth of 150 Hz, -60dB bandwidth of 680 Hz !!)
Filename: hell-17.exe
File size: 162 kb
Filename: hell-17.tif
File size: 70 kb
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Electron August 1983
Nog een hell-systeem
van Ooijen, A. PE1AQB
Electron, August 1983, p. 417
Description: description of a Hell-like system that optically scans handwritten paper strips
Filename: hell-20.exe
File size: 166 kb
Filename: hell-20.tif
File size: 74 kb
==============================

Computer software for Hellschreiber

==============================
Software and other information is available from the following sites:

IBM PC and COMPATIBLES

Murray ZL1BPU, the European mirror site or European FTP download site

Nino IZ8BLY wrote a very popular program.
IZ8BLY Hellschreiber 4.0 supports Windoze XP,

Ko Versteeg NL9222 - mirror site
------------------
WinHell by Henk PA3BQS
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HS by Sigfus LA0BX for DOS computers.
------------------
HELL01 by PA20HH for DOS computers.
------------------
ON6ET (DH2JH). This site contains links to lots of Hell-like software.
------------------
MixW.xx (Shareware)
MixW suports Hellschreiber and many other digital modes. Also available from the USA mirror site
------------------
MULTIPSK
MULTIPSK by F6CTE suports Hellschreiber and many other digital modes.
Mirror sites: N8KBR and Terry
------------------
Fldigi by W1HKJ
------------------
Skysweeper
Skysweeper Standard (and higher) supports Hellschreiber
Unfortunately, this software costs money.
Registration fee for SkySweeper LITE is £27.99, STANDARD £59.99, STANDARD PLUS £119.99, PROFESSIONAL £349.49 (On-line prices, Jan 2004)
------------------

A low-speed Hellschreiber implementation has been developed by Lionel G3PPT
A modified version of Slow Hell was used by Markus DF6NM on 137 kHz

Slowfeld3 program created by DL4YAO
Slowfeld wave file created by KF4HEY
Slowfeld screen shot created by KF4HEY

Lionel G3PPT has recently developed a new mode, similar to Hellschreiber, referred to as THROB.
Download THROB software from Lionel G3PPT or Ko Versteeg NL9222:
Lionel G3PPT has documentation and a link to the program from G3PPT, or just the program:
Ko Versteeg NL9222 has download pages at NL9222 or mirror site and the latest version is throb25.zip
The current release (currently "THROB Version 2.5) and links to other useful software are available from Dave G3VFP.

MACINTOSH

cocoaModem and Guide by W7AY
------------------
Chris Smolinski N3JLY has written a commercial Multimode program with Guide which supports CW, RTTY, ASCII, NAVTEX, WEFAX, Packet, SSTV, PSK31 Hellschreiber, ICAO Selcall, ALE, DTMF, EIA, and CIR. It has a waterfall spectrum display.
==============================

Interfaces for Computer / Hellschreiber

==============================
DEUTSCH

Ein CW-Hell Interface
von Klaas H.J. Robers PA0KLS
Übersetzung durch Helmut Liebich DL1OY
RTTY 4/87

==============================
ENGLISH

Hamcomm interface
This is the interface used with the LA0BX DOS-based program etc.
One very neat, compact implementation has been designed by WB5NBQ
Another implementation was designed by Bo, SM6MDH. This is not so compact, but is a good project if you have a large soldering iron (;~)
------------------
LA9ZO has developed a simple interface for the LA0BX program that uses the parallel port of a slow (i.e. older) computer (this is included in the LA0BX distribution).
LPT_Info. File size: 6 kb
------------------
OH1KH has designed a parallel port interface which is reckoned in Helsinki to be more sensitive than the Hamcomm interface when used with the LA0BX program. Great for older computers which might not have the power to run the program with a serial interface.
LPT-2. File size: 6 kb
------------------
David G3VFP has developed a powered interface, which avoids problems of +12 V loops and ground loops between your transceiver, computer and any other equipment. Please check "OPTO ISOLATION SCHEMATIC" on David's Download page G3VFP, or you can read the review
------------------
The Rigblaster by West Mountain Radio inc. (Commercial site)
A series of all-in-one interfaces for just about any transmission mode that uses a computer sound card and a radio transceiver.
------------------
DONNER's Digital Interface Sales (Commercial site)
A Division of Donner's Country Crafts
Digital Interfaces for PSK31, RTTY, Hellschreiber, and other digital modes of Amateur Radio communication
------------------
MicroHam USB <-> radio interface (Commercial site)
 A digital / USB interface for computers without (enough) COM ports. Supports most common log programs

==============================
NEDERLANDS

Een CW-HELL Interface
Robers, K.H.J. PA0KLS
Electron, December 1980
Description: in Dutch, schematic and description of a simple pre-HAMCOM modem for Hell
Filename: hell-3.exe
File size: 282 kb
Filename: hell-3.tif
File size: 190 kb

==============================
SVENSKA

Tigertronics new sound card interface is available from
Skandic Radio (Commercial site)
Supports Hell, APRS etc.
------------------
Exodin Interface (semi-commercial supplier)
So far only available by mail order from exodin/a/telia.com.spam
(change the / to brackets and delete .spam)
or phone +46 90-14 63 20 (Nicklas) or
+46 90-13 35 03 (Bertil)

Three variants are available:

==============================

The Beacon Project

This began as a Hellschreiber PIC Beacon, designed by Bryan ZL1HIT, who started work on the Hell Beacon (Some of the links don't work properly.)
Murray ZL1PBU then took over the Hellschreiber Beacon Project, did a lot of work on it, and started the
AVR Beacon Keyer Project
-----------------
==============================
Top

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