Find on this site... Site Index  ·Classes ·Exams ·Clubs ·Hamfests ·Addresses    Search site:    Call sign search:   ARRL Member Login... Username:   Password:    Register    Forgot userid/password?  Quick Links... ·Join or Renew ·Catalog & Store ·ARRL Courses ·Classifieds ·Getting Started

Operating Activities Licensing News/Bulletins Services Education Public Service Support Donate to ARRL ARRL Info Text-only

ARRL Products: Digital Communications (More) Nifty E-Z Guide to PSK31 Operation -- Coming Soon! -- A complete guide for implementing PSK31! The ARRL Software Library for Hams 2.0 -- CD-ROM, Version 2.0. Quick access to utilities, applications and information. The ARRL Image Communications Handbook -- Use Amateur Radio to see and talk with other hams! Enjoy the imaging modes: NBTV, ATV, SSTV and WEFAX. ARRL's HF Digital Handbook -- Now Shipping! -- Join the Digital Race! 4th Edition. Digital Signal Processing Technology -- Essentials of the Communications Revolution. An understandable presentation and reference on DSP in contemporary communications technology.

Note: Many of the PDF files used on ARRLWeb will not work with versions of Adobe Reader prior to 6.0 and may cause errors with version 6.

Viewing and printing ARRLWeb's Portable Document Format (PDF) files requires that you obtain and install the free Adobe Reader program. Mac users can use the built-in Preview program (for OS X), however it may not support all the features of Adobe Reader.

ARRL recommends that you install the latest version of Adobe Reader, which can be downloaded directly from Adobe.

If you have an older version of Adobe/Acrobat Reader, it either may not function with files on this site, or may give errors when you try to open files.

The current versions of Adobe Reader as of Jan 2007 are versions 7 and 8.

Note: Adobe Reader is also included on the ARRL Handbook CD 2.0 and later, on recent QST/QEX/NCJ Publication CD-ROMs, and on the ARRL Antenna Book CD.

Once you've downloaded and installed Adobe Reader, you can click on any of ARRLWeb's PDF-file links to view, save or print the document involved--and Adobe Reader's Weblink feature lets you and your browser seamlessly follow the hyperlinks we add to ARRLWeb's PDF documents. (If you've already configured your browser to use Adobe Reader as a viewer and just want to save a PDF file to disk locally instead of spawning the viewer, pressing Shift as you click on the file's hyperlink and/or right-clicking on the hyperlink will give you that option in Mozilla Firefox, Netscape Navigator, and Microsoft Internet Explorer.)