DigiPan Download Page

A Freeware Program for PSK31 and PSK63

DigiPan stands for "Digital Panoramic Tuning" and brings the ease and simplicity of PANORAMIC reception and transmission to PSK31and PSK63 operation. DigiPan provides a panoramic display of the frequency spectrum in the form of an active dial scale extending the full width of the computer screen. Depending upon the transceiver IF bandwidth, it is possible to "see" as many as 40 to 50 PSK31 stations at one time. Low-cost transceiver kits for 10 meters, 20 meters, 30 meters, 40 meters, and 80 meters, the PSK-10, PSK-20, PSK-30, PSK-40, and Warbler (PSK-80), are available from  Small WonderLabs that make full use of DigiPan's panoramic capabilities through the use of a 3000 Hz wideband IF. An article about DigiPan and the panoramic transceiver can be found starting on page 33 of the June, 2000, QST magazine. Other information about PSK31, including a downloadable copy of the article, is currently available for members from the ARRLTechnical Information Service.

DigiPan1.0 forever changed how PSK31 tuning was done, from manually tuning the transceiver, to "point-and-click" mouse tuning, in which a signal on the waterfall is clicked with the mouse button to find out the station's callsign and decide whether or not to contact that station...

Now, DigiPan 2.0 again changes how PSK31 tuning is done!

All stations on the waterfall are now simultaneously decoded, and the callsign and text of each station is continuously shown on a separate multichannel display. CQ calls are instantly highlighted in color, and color alerts for any other two strings of text are also available. Since the callsign and text of each station is already known, instead of clicking on a signal to identify and contact a station, just clicking on the text or callsign of the desired station will transfer it to the active Receive area for a contact.
 

PSK63 - A super-fast PSK mode!

Announcing the DigiPan PSK63 DXCC and WAS prizes!

 

Download DigiPan 2.0 (700K)

Digipan 2.0 works best on a 266 MHz or faster Pentium processor and requires Windows 95 or greater

If you experience slowness in downloading, or problems in installing DigiPan 2.0, download this zipped version: digipan20.zip

If you find that your computer is too slow using DigiPan 2.0, DigiPan 1.7 is still available: digipan7.zip

Before installing any new version of DigiPan, or reinstalling an older one, first quit any running version of DigiPan, locate digipan.ini in the Windows directory (folder), delete digipan.ini, and then install DigiPan. After installation, you will have to re-configure your macros and personal data.

 

PACTOR Interference and what you can do about it


In 1995, the FCC approved the use of automatic digitally controlled stations on HF for the first time, stating officially, "We also are confident in the abilty of the amateur service comunity to respond, as it has in the past, to the challenge of minimizing interference with novel technical and operational approaches to the use of shared frequency bands".

Instead of developing "novel technical and operational approaches to the use of our shared frequency bands", which are required by the FCC to be shared among all users, the PACTOR mailbox operators just use ARQ as a means of taking over a frequency for themselves, even if you are on it first! ARQ stands for "Automatic Repeat reQuest", and what this means is that the PACTOR station will continue transmitting in bursts, waiting for an acknowledgement of success, until it either succeeds or gives up. If you are in QSO using PSK31, PSK63, or CW, and a PACTOR mailbox station comes on the frequency you are using, it will contine to transmit to try to get through, possibly destroying your QSO in progress. In addition, if a mobile mailbox user is successful in connecting with a powerful fixed station, it will trigger that station to transmit back, and that fixed station is generally on fully automatic operation, with nobody there to listen to see if the frequency is already occupied.

PACTOR mailbox operators have a right to use the same frequencies everyone else uses, but they are required by the FCC to listen first for activity on the frequency before transmitting, just like everyone else must do. The number of times PACTOR stations override PSK31, PSK63, or CW communications is so great that the probability is that they seldom, if ever, "listen first" in their passion to use the ham bands as an automatic gateway to send and receive email to and from the Internet.

The FCC has promised to take action to stop this illegal interference by PACTOR mailbox stations, so if you experience your QSO being destroyed by PACTOR station, report the offense to Riley Hollingsworth by filling out the form below, and slimply clicking "Send". Ask your QSO partner to go to http://www.digipan.net, fill out the same form, and "Send" it. DigiPan now includes PACTOR RX, so if you quickly switch to PACTOR RX (with the Mode menu or with the Status bar), you may be able to identify the callsign of one of the stations being called. Riley wants to help us get the interference stopped, but we must let him know when it occurs, and how often. To help you in identifying if an interfering signal is a PACTOR signal, here is a DigiPan waterfall screenshot of a PACTOR signal. To the left, in blue, is a PSK31 signal for comparison. If the PACTOR signal comes on and overlays your QSO partner's signal on the waterfall, it is potentially interfering with your QSO. If the PACTOR signal is merely adjacent to your QSO partner's signal on the waterfall, it may be affecting the AGC of your receiver, the effect of which can sometimes be reduced with passband tuning, IF shift, or a more narrow filter, but it is not considered interference, and should not be reported as such.


PACTOR Interference Complaint

Fill out all the fields below and then click the Send button to file a complaint directly with the FCC about a PACTOR station coming on top of an ongoing QSO. DO NOT file a complaint if the PACTOR station is merely adjacent to your frequency!

 


 

In addition to using DigiPan's PACTOR RX to identify a PACTOR mailbox signal, which only consistently transmits identification if it is successful in connecting with a fixed PACTOR station, mobile PACTOR mailbox stations are also supposed to transmit their callsign in either PACTOR or CW if they fail to connect with a fixed automatic PACTOR station. This identification has always been required by FCC regulations, and was supposed to have been phased in over the summer of 2003, but it is almost never done. Listen for CW ID at the end of the PACTOR transmission if it does not trigger a transmission from the other PACTOR station, or quickly switch DigiPan to PACTOR RX and look for the callsign of the calling station. For example, when you see <Calling:W1AW>, W1AW is the callsign of the fixed PACTOR mailbox station being called, not the callsign of the calling station. If sent by PACTOR, the callsign of the calling station will be shown in addition to the called station's callsign, or by CW at the end of the PACTOR transmission.

DigiPan Tips:

Windows 2000 users - if you get a "Soundcard is already in use or does not exist" error message when you try to run DigiPan, there may be a conflict with a voice modem driver that Windows 2000 installs by default, whether you have one or not. To eliminate the problem, go to Control Panel/System/Device Manager and look for a device called a Unimodem Half-Duplex Audio Device. Disable or remove this device and that should solve the problem.

Revision History

1.0c: 01/04/2000 Initial release

1.1: 05/15/2000 Second release. Added Seek, DTR PTT, Bookmarks on Spectrum Window, Right-click macro editing, Wordwrap, Tune signal, Additional Log bar, Drag-drop Log entry, Spectrum window default palette selection, Dial Scales for 80m - 10m, CW ID, and other macros.

1.2: 06/01/2000 Third release. Added SCAN, Markers, log editing, support for nine serial ports, additional macros, and corrected the intermittent disappearing cursor problem.

1.5: 11/05/2000 Fourth official release. Added dual channel reception, selectable colors for all windows, ability to transmit and receive on different frequencies, easier to use log, QSO data display on status bar, phase scope, Sound history, and transmitted IMD measurement.

1.6: 1/1/2001 Fifth release. Fixed bug that changed the Regional Settings, added ADIF Log import and export, and changed to new internal log format for faster searching.

1.6c: 1/5/2001 Sixth release. This is a maintenance release that corrects some minor bugs in the log operation.

1.6d: 1/14/2001 Seventh release. This is another maintenance release that corrects a bug in the log operation that rendered searching impossible if the search operation was cancelled.

1.7: 6/16/2003  Eighth release. Added PSK63, CI-V frequency control for Icom transceivers, and PACTOR-I (receive only).

2.0: 11/1/2004 Ninth release. Added multichannel reception, CQ alert, Internet callsign lookup, and Rx and Tx offset adjustment.

Skip Teller, KH6TY

hteller@comcast.net

December 16, 2004