The Official UI-View32 Web Site

UI-View32, written by by Roger Barker G4IDE SK, is a 32-bit Windows APRS program.


UI-View16 and UI-View32 Windows APRS Clients


i [UI-View]   [UI-View32]  [Registration]  [Downloads]  [Support]  [Maps]  [Map Software & Add-Ons]  [APRS Links



What is UI-View?

UI-View is an APRS client that runs on Windows. This application differs from most APRS software in that it isn't designed just to be used with TNCs in terminal mode. UI-View also supports TNCs in KISS mode, AGWPE host mode and BPQ host mode. The 32 bit version of UI-View also supports WA8DED/TF host mode, and the variant of it used in the SCS PTC-II and PTC-IIe. The host mode support means that UI-View can be used with a wide range of packet hardware and allows up to 16 RF ports to be used.

It can run as a full-featured internal intelligent digipeater with the TNC in KISS mode, and with modification to the UI-View2.INI file, supports the new WIDEn-N settings, and has full support for connecting to APRS servers on the Internet and running as an IGate or Internet Gateway.

UI-View uses bitmap images for its maps. Also, the 32 bit version has full support for Undertow Software's Precision Mapping CD atlas version 5 or 6, allowing you to zoom to street level anywhere in the USA. Their version 7 is also supported by PMapServer7 modified by Bill Diaz KC9XG. Download PMapServer. Precision Mapping 8 could use PMapServer 7. Users of the newer Precision Mapping 9 should use PMapServer 9.

With open architecture, UI-View is designed to make it easy for software authors to write add-on applications that provide additional functionality. There are two versions of UI-View, the original UI-View (sometimes referred to as UI-View16), and UI-View32.

UI-View (or UI-View16)

The 16 bit version will work on Windows 3.1 as well as on 32 bit versions of Windows, but most people should use UI-View32. It is supplied as "registration-ware". An unregistered copy is almost fully functional. The only restriction is that some of the IGATE functionality is disabled. Registration covers both UI-View(16) and UI-View32. See the registration link below.


UI-View32 is a 32 bit version and so needs a 32 bit version of Windows - Win95, Win98, WinME, Win2000, WinXP. It is for registered users only, and has many extra features compared to UI-View(16). If you are unfamiliar with UI-View32, you can try UI-View(16), but unless your hardware doesn't meet the minimum specs for UI-View32, the 32 bit version is recommended. The absolute minimum hardware spec to run UI-View32 is a P120 with Windows 95, 98, ME, 2000 or XP. If you run it on anything less than that, then it will be very slow. Don't expect to be able to run PMapServer7 on a P120. Undertow's own "minimum spec" is for a 200 MHz Pentium, but you will get better performance by running it on a more capable machine. A 500 MHz machine will run PMapServer7 a lot more smoothly than one that only just meets the minimum requirements. It will run fine on Windows Vista, Windows 7, Windows 8.x and Windows 10, but because of UAC (user access control) it should NOT be installed below Program Files or Program Files(X86).

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Roger Barker G4IDE SK

Roger Barker G4IDE became a silent key on September 8, 2004. The amateur radio community lost a great friend on that day. He will be remembered as a true ham. Roger was the author of WinPack, UI-View and UI-View32, as well as other programs. UI-View has had a huge and positive impact on the APRS community. Most of us only knew him through the UI-View support group, but some UI-View users were fortunate enough to have met him. He was ever-present on the list answering questions that had usually been asked before, but always courteous and always helpful. Even in the middle of the night, he often posted replies. He leaves behind a legacy that will be useful to thousands of hams world-wide for years to come, and his loving wife Dee, his son Steven and his daughter Kate.

Just before Roger G4IDE passed away, the registration fees for UI-View and WinPack were waived, but it is asked that you make a donation to your local or national cancer agency. Please ignore the registration instructions in the UI-View Help.

UI-View Registration:

For registration of UI-View32, please visit Andy Pritchard's website (M0CYP). Enter your callsign and name and then click on the registrar that lives the closest to you. Andy also has some great "add-ons" for UI-View & UI-View32.

WinPack can be downloaded from Andy's site. The old WinPack site is no longer available.


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UI-View (16 bit) Downloads

UI-View v2.39 (not intended for XP and newer) is a single file for doing a full installation. uisfx239.exe (1.86MB).

If you want to be able to put the installation files on two floppies so you can transfer them to another PC, then download ui239_1.exe (1.38MB) and ui239_2.exe (475KB) instead and run each of them with an empty formatted floppy in A: drive and they will create disk 1 and disk 2 of a two floppy disk installation set.

If you are using the 16 bit UI-View v2.32 or later, you can update it to v2.39 with  u16up239.exe (1.03MB). If you are using a version of UI-View earlier than v2.38 with AGWPE, you should install this update. Unless there is a reason to use the older 16 bit version, choose UI-View32 v2.03 below.

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UI-View32 v2.03 Downloads

UI-View32 cannot be used without a registration.

If you are in the USA or Canada, and want to use UI-View32 with Precision Mapping, then see the UI-View32 and Precision Mapping page for information about what you need to download. PMapServer9 allows use of Precision Mapping version 9 from UnderTow Software. You can still /download PMapServer. A few screenshots can be viewed here on this site.

V2.03 is the latest full installation of UI-View32. It is supplied as a single file, self-extracting installer 32full203.exe (5.02MB).

UI-View32 V2.03 Update - If you already have a previous version of UI-View32 installed, this self-extracting installation system can be used to update UI-View32 V1.80 or later to V2.03 - 32upd203.exe (2.52MB). See CHANGES.TXT for details of all the changes that have been made since V1.80.

NOTES: UI-View32 was written before Windows Vista, Windows 7, or Windows 8 were on the horizon. Versions of Windows newer than XP use UAC... User Access Control. The operating system doesn't like programs writing to files below Program Files. UI-View saves settings in the file uiview32.ini any time you make changes, and of course the station lists are always changing. For this reason, UI-View32 should be installed somewhere other than below Program Files for versions of Windows newer than XP.

Operating systems newer than XP do not support .hlp help files. The context sensitive help built into UI-View really helps set it apart from other APRS clients. If you are using anything newer than XP but older than Windows 10, you should download WinHlp32.exe from Microsoft's site. Unfortunately, it won't work on Windows 10, but there is a solution. Download RestoreWinhelp32.exe from Stephen WA8LMF's site. It is based on work by Komeil Bahmanpour.

UI-View Support

The old Yahoo support group has been closed. It was migrated over to on Nov 10 2019. Please include your call sign if you subscribe, and also include it in any posts. Messages to the group by email should be in plain text format. Use the following link to subscribe to the group.

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Map Software For UI-View32

There are several programs available for creating maps for UI-View32, plus there are some plug-in map servers and external display applications. Click here for more information on how to create static maps for UI-View with programs like SA Map Grabber for Street Atlas, UI-Terra for creating maps from aerial photos or topo maps (USA only), UI-Radar, tips on creating static maps grabbed from MS Streets & Trips or from scanning your own maps, and plug-in map servers such as PMapServer9. This will give hams in North America street level scrollable and zoomable maps for all of the USA and Canada. Other than for registration or for updates, Internet access is not needed. PMapServer9 works with Precision Mapping 9 from UnderTow Software. PMapServer7, PMapServer6 and PMapServer5 are still available. PMapServer 7 can be used with Precision Mapping Streets & Traveler versions 7 and 8.

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Download PMapServer9

The original version of PMapServer was written by Roger G4IDE.

Note - earlier versions of PMapServer MUST be removed before installing version 9. If you have run an earlier version since booting, restart your computer BEFORE installing PMapServer 9. If you have UI-View set to automatically start when Windows starts, temporarily disable this feature.

Install and register Precision Mapping Streets and Traveler 9.

Download and install PMapServer9.

>>> Download PMapServer9

PMapServer9 for use with Undertow Software's Precision Mapping 9, modified by Bill Diaz KC9XG, and was released on January 7 2005. Beta testing of PMapServer7 began on Dec 29 2004 and was essentially completed on Jan 6 2005. The final tweak was ready for release on Jan 7 2005. You can still download PMapServer.

NOTE: See special instructions posted Nov 14 2006 for use with PMap version 8. PMapServer 7 should be used with PMap 7 and 8.

More screenshots of PMapServer7 in action in UI-View32 can be seen here.

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Bill KC9XG has modified and released NWSGet ver 2.91. This add-on will retrieve and display weather radar images in UI-View32. NWSGet 2.91 will only work with PMap 9 (Precision Mapping Streets and Traveler 9.0) and PMapServer9. It will NOT work with PMapServer7, and earlier versions of PMap. NWSGet is left running to download the selected radar images. They are viewed in UI-View by going to Map - Control Panel - Underlays - Load Underlay.

NOTES:  There is a bug in the PMap OCX that precludes the use of NWS shape files at this time. Leave all choices unchecked for now. Bill will be supplying a severewx.ilm file once the "OCX bug" is resolved. It will include "Import Mgr display properties" for all of the shape files currently downloaded. This file will be placed in the "PMapServer9\shp files" folder.

NWSGet 2.91

  1. If an older version of NWSGet was running, exit and remove the old NWSGet files from your computer, including any files in the PMapServer underlay folder.
  2. Download NWSGet ver 2.91 and Unzip the files into a folder... e.g. if using Windows XP... C:\Program Files\NWSGet 2.91 but if using Windows 7 or Vista, do NOT place it in Program Files or Program Files (0x86). However, if you don't take this advice for Windows 7, make sure you turn on administrative privileges for NWSGet by right clicking on the NWSGet.exe file and selecting "Run as Administrator".
  3. "Save radar in native format" must be checked or a conversion error will result when you download radar images.
  4. Users who downloaded version 2.9 can just copy the 2.9.1 NWSGet.exe file
    to the NWSGet 2.9 "installation" folder.

The older NWSGet 2.2.1 is still available for download, but it is effectively obsolete because the URLs that it downloaded from have all changed.

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Overlays and Underlays for PMapServer

You can place overlay and underlay files in the "Pmap Overlays" or "Pmap Underlays" folder below the PMapServer installation folder... e.g. the following is an overlay of the Dayton Hamvention.

  • Dayton Hamvention® and HARA Arena overlay - 11 KB Hamvention-HARA.OVR Hamvention® and HARA Arena are at 39º 49.29 N / 84º 15.40 W. Created with Precision Mapping Streets and Traveler v5.0 but tested in UI-View32 with PMapServer7 and it seems to work fine. Submitted by Joe KA8C.

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UI-Point32 is an add-on for UI-View32 that allows you to plot APRS stations on MapPoint 2002 maps. See the UI-Point32 page for more information.

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Maps for UI-View

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PCSAT Telemetry V2.41 Decoder

This is an add-on for UI-View32 V1.65 or later. It decodes the telemetry from PCSAT and provides pass predictions. Besides decoding the PCSAT telemetry, this version will provide orbital pass predictions for both PCSAT and ISS, and will plot the locations of the two satellites on the UI-View32 map. pstlm241.exe (1.02MB) is an InstallShield single file installer, run it and it will take you into an installation dialogue. Click here for a picture of the decoder.

There is also a standalone version of the PCSAT Telemetry Decoder for 32 bit Windows. It doesn't need UI-View32, but it does need AGWPE, and it is freeware. Besides decoding the PCSAT telemetry, it has a map window that shows the current position and footprint of either ISS or PCSAT, and it has a terminal window that you can use for transmitting. The current version is V2.42. If you have previously installed an older version, then you must uninstall it before installing this version.

The installation package PCDec242.MSI (2.10MB) requires Windows Installer.

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Callbook servers for UI-View32

From V1.51, UI-View32 supports callbook servers as plug-ins. They allow you to both look up callbook information for stations that appear on your maps, with just a couple of mouse clicks, and to manually input and search for a callsign. There are currently three servers available:

  • HamCallSrv is a server for the BuckMaster HamCall CD hcsrv130.exe (751kB)
  • FCCSrv is a server for the USA FCC callsign database. It also supports adding the Canadian callsign database information to the FCC data (see the help file included with it) - fccsv160.exe (900kB)
  • RACSrv is a server for the Radio Amateur Callbook CD - racsv120.exe (762kB)
  • VKSrv is a server for the Radiomag VKText.TXT file - vksrv110.exe (905kB)
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If you want to read some comments about how Roger tested programs, what PC hardware he used and so on, take a look at G4IDE's PC Page.


APRS Server List

If you have just installed UI-View, the server list will be out-of-date. Click on "FILE - Download APRS Server List" and change the URL to one of the following.




Non-English UI-View Resources

The following resources are available in languages other than English. If you know of any others, please let me know!

  • Italian Manual
    Adriano, IK2CBD, produced an Italian manual in Word format for UI-View and UI-View32. It was an absolutely superb document. Roger wanted to publicly thank Adriano for all the effort he has put into it. Unfortunately, it is no longer available from his web site.
  • An Italian version of the UI-View help file
    This zip contains Italian replacements for UIVIEW.HLP and UIVIEW.CNT.
    Note - this is for UI-View(16). Click to download it. (148kB).
  • A mirror of this site in French
    Go to Club APRS - FRANCE and follow the 'Logiciels' link... or go directly to the UI-View in French: UI-View page.
  • A Spanish UI-View/APRS site
    The EA1URO site has Spanish versions of all the help files for UI-View(16).
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Rig Control

When DX cluster spots are received in "DX Cluster Spy" mode, information about them is made available to client programs via a DDE interface from both UI-View and UI-View32. UI-View32 also makes the information available to programs that use it as an ActiveX component. UIV32-HF150.ZIP contains the VB5 source code of a simple rig control add-on. It works with the Lowe HF-150, but it should be very easy for anyone with some knowledge of VB5 to change it to control other rigs.

Rotator Control

UI-RCI provides a link between UI-View and EA4TX's Rotator Control Interface. DX spots from the DX cluster appear in a list window in UI-RCI, and the antenna can be rotated simply by clicking a station in the list. Download and read the text file in the zip for information on how to use UI-RCI.

UI-View Add-Ons

M0CYP's UI-View Page Great add-ons for UI-View and UI-View32 by Andy M0CYP such as...

  • UI-Path32

  • UI-ODBC Bridge

  • UI-Route

  • UI-PaintBox

  • Quick Logbook

  • FindU Log

  • UI-HeightTrack

  • UI-DX Bridge

  • UI-Store & Fwd



  • UI-NetActive

  • UI-Drafts

  • UI-Weather

  • UI-Traffic Monitor

  • UI-InfoKiosk

  • XTR Control Panel

  • UI-Waypoint

  • UI-Filter

  • UI-SignPost

and by Chris PA7RHM (click on downloads)...

  • NWS-Report - NWS Weather reporting add-on suggested by Moe Brewer Jr. N4CQW

  • APRS_Beacon - Define your APRS beacon comment, including new Operating Frequency option for Kenwood TM-D710

  • APRSNL_UG101.PDF - Dutch APRS Guide by Ben PD0B and Chris PA7RHM

  • Overlays - Various (UI-View) overlay files for PA, ON and LX (also special event stations 50 year memorial of 1953 flooding disaster )

  • logfileextract - Extracts data from UIView logfile for 1 callsign

  • uidfplot - Plot RDF solution on your UI-View32 screen

  • PA7RHMsvr map server - A UI-View32 map server based on the MapTool principle of getting maps from the Internet

  • UI_EMAIL - A UI-View32 add-on that will send emails that are sent to the APRS destination EMAIL

  • UI_TWP - The TinyWebPage server for UIView32

  • MapTool - Create UI-View maps using MapBlast

  • VicinityAlarm - Sound an alarm when stations come within range


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Links to other UI-View and APRS sites



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Other APRS Links

  • APRS SIG... subscribe at
  • Bob Bruninga WB4APR developed Automatic Packet Reporting System (APRS)
  • Downloads:
  • Fixing the 144.390 MHz APRS Network
    or Stephen WA8LMF's mirror site
    • Please note that RELAY, WIDE and TRACEn-n are now obsolete in North America. The big problem with them is that they cause a horrendous number of dupes. The "ping pong" effect of the dupes does more harm to the APRS network than paths that were too long.
    • The new "universal" path is WIDE2-2. Fill-in digipeaters that used to respond to RELAY should change their alias to WIDE1-1. Where mobiles need the help of a "fill-in" digipeater, they should a path of WIDE1-1,WIDE2-1 instead of WIDE2-2. Even if they happen to be in an area where the fill-in digis haven't yet changed to WIDE1-1, this path will still be compatible with all of the WIDEn-n digis in the rest of the network.
    • There may be occasions where a station needs a longer path, but many smart digipeaters are "trapping" excessively long paths. Do your part to help fix the APRS network by helping to spread the word, as well as changing your own trackers to WIDE2-2 or WIDE1-1,WIDE2-1.
  • NWAPRS - supporting APRS in the "Pacific Northwest" but lots of good information concerning configuring TNC based digipeaters with the "new paradigm" settings for WIDEn-n "wide" digipeaters and for WIDE1-1 "home fill-in" digipeaters.
  • TinyTrak 3 and PocketTracker
  • OpenTRAC Open Tactical Reporting and Communications is a message protocol designed for carrying tactical information, including GPS position reports, weather data, and telemetry, over an unreliable, bandwidth-constrained network. Typically, this is the Amateur 2-meter VHF band using 1200 bps AFSK. The protocol is specifically designed, however, for use across multiple networks to support Internet backbones, satellite links, and so on. Time will tell if this is an "APRS replacement" or if it will be a parallel network.
  • OpenTracker is an APRS and OpenTRAC capable GPS and telemetry encoder, physically and electrically compatible with the Byonics TinyTrak3. The device connects to a GPS receiver and radio, and transmits AX.25 packets at 1200 or 300 baud. The firmware is published under the BSD license.
  • Xastir APRS client designed to run on several platforms including Linux & Windows.