ARRL RTTY Roundup 3.9
Also Supports FT Roundup!
(System Requirements - Windows Vista through Windows 10. XP versions here.)

Rtty Software Freeware
Rtty Software Download
Rtty Software Ham Radio
Rtty Software Free

Download ARRL RTTY Contest Log Now!

The 'Mode' menu selects a working mode (RTTY, ASCII-7, ACSII-8, AMTOR-FEC, BPSK31 etc.). Signal speed and frequency shift are selected via the 'Speed' and 'Shift' menus respectively. Take into consideration that when you select RTTY or AMTOR mode via the 'Mode' menu, speed and shift are reset to the default values 45 Baud/170 Hz and 100 Baud. Even though I've been active on RTTY for over 20 years, have won several RTTY contests and have achieved RTTY DXCC Honor Roll, I don't claim to have all the answers. I do have a technical background and am familiar with many of the technical aspects of operating RTTY. RTTY is the most fun I've had in over 30 years of Amateur radio.

ARRL RTTY Contest Log Features:

Very easy and intuitive to use!

Checks for duplicates (including partials).

Lists all contacts.

Lists all the sections, and section color changes when it is worked.

Lists countries worked.

Interfaces with many digital programs and other software via API including WSJT-X, N7YG, Fldigi, JTAlert, PSK Express and more!

Provides a country lookup function.

Writes Cabrillo file format for log submission.

Provides many current statistics.

Interfaces with most Elecraft, Icom, Kenwood and Yaesu radios.

Writes ADIF Export file format.

Provides DX spotting.

Performs Super Check Partial.

Fully networkable! You can have as many PCs updating the same log file simultaneously as your LAN will support.

Click here for a revision history of this program.

ARRL RTTY Contest Log Registration

The ARRL RTTY Contest Log is limited to 30 contacts until registered. For permanent use of this downloaded program, a $8.99 registration fee is required.

Register all of our logging software at once and save hundreds with the N3FJP Software Package! Please see the Register Now! page for details!

Rtty Software Freeware

Registration Options:

Please send Cash, Check or Money Order payable to Affirmatech Inc. for registration of this program. Please be sure to include your call sign and e-mail address with your request so we can process your registration promptly! Please send your payment to the address below:

Affirmatech Inc.
G. Scott Davis, N3FJP
118 Glenwood Road
Bel Air, MD 21014-5533

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ARRL RTTY Roundup Contest Log - $8.99

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N3FJP Software Package includes full registration of all my amateur radio software (more than one hundred programs in all)! Simply install the software from this website whenever you like. This option also includes free registration of any additional amateur radio software that I add to the package, as well as free upgrades to existing programs. There are no annual / maintenance costs of any kind. Simply pay once and you are set with N3FJP Software for life!

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About this page

Use of RadioTeletype (RTTY) has received a boost since NASA Marine introduced the Weatherman receiver. But, what is RTTY and why is it useful to sailors? A separate page deals with some reception problems.

On this page -

Do I need RTTY?

I sometimes get asked 'Should I have NAVTEX or the NASA Weatherman?'. My usual reply is 'Both!' If not Weatherman, then have an HF/SSB receiver, with laptop and decoding software.

To understand the question and answer we need to know about RadioTeletype (RTTY). This is old technology but is still used in some parts of the world. Around Western Europe and throughout the Mediterranean it provides a useful forecast service that complements other GMDSS services that sailors will receive via Marine VHF, NAVTEX and Inmarsat-C. The DWD has said that they intend to continue the service despite rumours to the contrary. ( See the Yachtcom site for much good advice on marine radio communications.)

So, What is RTTY?

RTTY is a system for broadcasting text over radio. The technology dates back to the late 1950s and seems somewhat anachronistic. Speeds are slow, even slower than NAVTEX. A similar service is the USCG service, SITOR (Simplex Teletype Over Radio) providing offshore and coastal forecasts over very wide and remote areas from the tropics to the polar regions.

There is dedicated equipment to receive RTTY and SITOR but we can receive both using a standard HF/SSB receiver with software packages such as TRUETTY, JVcomm and SEATTY to decode the signals.

The main advantage of RTTY/SITOR is the reception of information over an entire ocean area. The USCG also shares frequencies across multiple transmitters according to a schedule, rather like NAVTEX. The system is available over the Atlantic and Pacific including polar regions not served . For more about SITOR see the Monitoring Times link or the USCG site.

Around Western Europe and the Mediterranean, the Deutscher Wetterdienst (DWD) , the German Weather Service has accepted the responsibility to broadcast weather information for mariners on RTTY. Frequencies are as in the table below.

DWD Frequencies