Sysop Settings control many of EchoLink's features when it is running in Sysop mode. Choose one of the tabs along the top to view the RX Control, TX Control, DTMF, Ident, Options, Signals, Web, or RF Info options. Each of these tabs is described in detail below.

RX Control Tab

The RX Control tab sets up the interface between your PC and your receiver (or transceiver).

Carrier Detect: EchoLink needs to be able to detect when a signal is being received at the receiver. Normally, a built-in VOX system monitors the received audio and triggers EchoLink when it rises above a certain level. However, for more positive operation on simplex links, it is also possible to connect the carrier-detect signal directly from the receiver to one of the PC's serial ports.

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Manual: Select this option if you do not wish to use VOX or the serial port. In order to 'transmit' to the other station over the Internet, you must click the Transmit icon or press the space bar. This would normally only be selected for testing.

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VOX: Select this option if you do not have a carrier-detect connection between your receiver (or transceiver) and your PC's serial port. This is the default. When VOX is enabled, and a connection is established to a remote station, EchoLink will begin 'transmitting' to the remote station whenever the peak audio level rises above the VOX threshold. The VOX threshold is set using a slider that appears just below the audio level indicator at the bottom of the EchoLink screen.

When VOX is enabled, EchoLink monitors your receiver's audio continuously, and the audio level indicator will be active at all times, even when your system is not connected to another station.

VOX Delay: When the VOX has been triggered by a local signal, EchoLink will continue sending audio to the station on the Internet for a short amount of time after the signal stops. VOX Delay controls this time period, in milliseconds. Increase this number if local stations tend to leave silent pauses frequently in their transmissions. This setting also controls the delay when using Serial CD, Serial CTS, or Serial DSR for carrier detect.

Anti-Thump: When using VOX, to avoid false triggering after going key-up, enter a non-zero value for Anti-Thump. The default is 500 milliseconds. This feature is particularly useful when operating a repeater node, to avoid having EchoLink's VOX trigger on your station's own squelch tail. This setting also applies when using Serial CD, Serial CTS, or Serial DSR for carrier detect.

ClrFreq Delay: Sets the size of the 'clear-frequency' window. This is the length of time EchoLink will wait, after the VOX releases, before determining that the local frequency is clear (i.e., not busy). During this time, the Hand annunciator appears at the bottom of the screen. The default is 3000 milliseconds. Certain functions, such as announcements and station IDs, can be automatically deferred until EchoLink determines that the frequency is clear.

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Serial CD, Serial CTS, and Serial DSR: Select one of these options if you prefer to use a directly-connected carrier-detect signal rather than VOX. In many cases, this will provide better results than VOX when operating a simplex link, since it allows EchoLink to positively track the incoming station's carrier rather than relying on its audio level. When this option is enabled, select the Serial Port to which the signal is connected from the drop-down list. EchoLink expects the signal to be low (inactive) when the receiver is squelched, and high (asserted) when a signal is being received. If Invert Sense is checked, the opposite is true. For more information about this connection, see Interfacing.

Note that the VOX Delay setting (despite its name) applies to any of these options as well. If you are using direct carrier-detect, consider reducing the VOX Delay to a somewhat smaller amount than the default.

Squelch Crash Anti-Trip: If you are using VOX, check this box to enable a special feature that improves VOX behavior when your link is tuned to a local repeater. When this feature is enabled and properly adjusted, EchoLink's VOX will ignore short noise bursts, such as squelch-tail 'crashes' and courtesy tones. This can significantly improve repeater-to-repeater linking.

Set the Duration value to the size of the 'window', in milliseconds, inside of which the noise pulse must fit in order for EchoLink's VOX to ignore it. Typical values are 40ms for squelch crashes and 300ms for courtesy tones. Experiment with this setting until the purple SIG annunciator no longer appears when the undesired noise is heard.

When this feature is enabled, all outbound audio is passed through a delay line as part of the detection process, approximately three times the Duration value in length. Note that this feature makes no effort to suppress noise bursts in the audio stream itself; it is only intended to prevent the VOX from tripping.

TX Control Tab

The TX Control tab sets up the interface between your PC and your transmitter (or transceiver).

PTT Activation: These options determine how EchoLink keys the local transmitter when a signal is received from a station on the Internet. If no signal is being received by the local receiver, EchoLink keys the local transmitter when any audio is received from the distant station, then un-keys it when the distant station stops its transmission.

External VOX: Select this option if you do not have any connection between your PC and your transmitter's push-to-talk (PTT) circuit. Although not commonly found on FM rigs, your transmitter may have VOX control, which can be enabled when this option is selected. Audio from the PC triggers the transmitter's internal VOX circuit and keys the transmitter. For most installations, however, a connection to the PTT circuit is preferred.

ASCII Serial: Select this option if you are using a WB2REM/G4CDY or VA3TO interface board, or an equivalent. This type of interface board is designed to receive ASCII commands from your computer's serial port. From the Serial Port list, select the port to which the board is connected. The serial-port speed is preset to 2400 bps; check the box marked 9600 bps if you are using an older interface which operates at that speed.

RTS and DTR: Select one of these option if you are using a RIGblaster (or equivalent) PC-to-radio interface. This type of interface activates the transmitter's PTT line when either the RTS or DTR pin of the serial port is asserted. From the Serial Port list, select the port to which the board is connected.

Key PTT on Local Transmit: Check this box to force the transceiver's PTT to be keyed when you tap the spacebar to begin transmitting, and to un-key when you stop. This feature is useful if you are running a Sysop link, and also wish to be able to join an EchoLink QSO from the local keyboard and microphone.

This feature can also be used in conjunction with the Serial Port option on the PTT Control screen of Preferences/Connections. If Auto-Select Mic Input is enabled, EchoLink will switch automatically between the transceiver audio and the local mic when transmitting locally. See PTT Control for more information.

DTMF Tab

Items on the DTMF tab list each of the functions EchoLink supports by entering DTMF (a.k.a. TouchTone) commands over the local link, or a secondary link receiver. DTMF commands may be used to activate or de-activate the link, or to connect or disconnect a distant station.

DTMF Decoder: Select one of the three options, depending on your equipment set-up.

External: Select this option if you are using a WB2REM or VA3TO interface board, or equivalent. These interfaces have an on-board DTMF decoder which communicates with EchoLink over the serial port.

Internal: Select this option if you are using another type of interface, such as a RIGblaster. When this option is selected, EchoLink itself detects DTMF tones as they are received at the PC's sound input, using digital signal-processing techniques.

Disabled: Select this option if you do not wish to accept DTMF commands. When this option is selected, none of the items in the DTMF Command list will be available.

Min Interdigit Time: Sets the minimum amount of time, in milliseconds, that EchoLink will allow between incoming DTMF digits. Set this to 0 for the default timing. Set this to a higher value (such as 200 or 500 ms) if you find that noisy signals are causing single digits to be interpreted as multiple digits.

Log All Commands: When this box is checked, EchoLink will log all DTMF sequences that are received, even those which do not trigger a function. These entries will appear in the System Log.

Auto Mute: When this box is checked, EchoLink will suppress DTMF signals (received over the local link) from going to the remote station over the Internet. DTMF signals are suppressed completely if the Internal decoder is used; when using the External decoder, the first part of the first digit may 'sneak' through.

Disable During PTT: When this box is checked, DTMF signals are not decoded while the local link transmitter is keyed. In some audio configurations, audio from the sound card might be fed into either the internal decoder or an external decoder. This can cause DTMF signals received over the Internet to be interpreted by EchoLink's decoder, which may be undesirable.

Enable Remote Pad: When this box is checked, stations connecting to your link using EchoLink version 1.6 or above can send DTMF commands to (or through) your link radio using the program's built-in DTMF encoder pad. Enable this feature if there are DTMF-controlled repeater or remote-base functions you wish to provide to remote users. The remote user's DTMF pad is not available if either node is participating in a conference.

Note that EchoLink's built-in DTMF decoder itself does not normally respond to signals received over the Internet; however, certain audio configurations may cause this to happen if they allow the sound card's output to be fed into its input, or to an external DTMF decoder. File commander activation code free.

Also note that this setting controls only the ability of the remote user to use EchoLink's built-in DTMF pad. It does not affect DTMF signals from other sources.

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Advanced: When using the Internal DTMF decoder, opens a window which allows the frequency tolerance, 'twist', and signal-to-noise ratio to be adjusted. If you have difficulty getting DTMF digits to decode reliably with the Internal decoder, you may find that adjusting these settings, particularly the frequency tolerance, will help. However, you may wish to try lowering the audio level of the receiver first.

DTMF Command List: The list shows the name of each DTMF command and the sequence of digits that is required to activate it. To change any of the function sequences, click on the appropriate entry in the Sequence column and edit it. To disable a function, leave the item in the Sequence column blank, or replace it with the letter X.

Reset to Defaults: Returns all DTMF function codes to their default values. This also adds any new function codes which may have been added since a previous version of the software.

Dead-Key Prefix: Some repeater controllers have a feature that mutes DTMF tones so that they are not heard on the output. Typically, however, these controllers provide a work-around in the form of a prefix that can be used to disable the DTMF muting feature (such as #). If you are running a link to such a repeater, and receiving audio from the repeater's output, users wishing to send EchoLink DTMF commands will have to prefix all EchoLink commands with this sequence.

In some cases, however, EchoLink receives and decodes this command prefix along with the command itself, which is usually not desirable. To avoid this problem, enable the Dead-Key Prefix option. This will cause EchoLink to always ignore the chosen command prefix, unless it is the only digit received. Drake take care download zip.

Station Shortcuts: Opens the Station Shortcuts window. This window allows you to create custom DTMF sequences for connecting to specific stations, like a personal phone book. For example, you could create the shortcut 99 to connect to K1RFD. This makes it easier for mobile stations to connect to a frequently-used station without having to memorize the station's node number. Be sure to use sequences that do not conflict with other functions; two- or three-digit sequences are usually good choices. Note that Station Shortcuts are implicit 'connect' commands, not simply abbreviated node numbers.

For more information about DTMF commands, see DTMF Functions.

Identification Tab

For general courtesy, and to help comply with your country's Amateur Radio regulations, EchoLink supports automatic identification of your link over the air. A Morse ID or voice ID (either an internally-generated one, or your own custom recording) can be played at the beginning and/or end of a connection, and periodically while the connection is active. EchoLink can also play an ID periodically when no connection is active, if desired.

Voice ID Source: Choose whether to use the internally-generated ID, or a custom WAV file you have created.

Morse: Enter the callsign you wish to use to identify. When the time comes to identify, EchoLink will send the callsign (as entered) in Morse, mixed with any other audio which may be present. The main advantage of a Morse ID is that it tends not to interrupt or delay the progress of a QSO. Click Settings to adjust the Morse speed, pitch, and audio level.

Internal: Enter the callsign you wish to use to identify. When the time comes to identify, EchoLink will 'read' the letters and digits as entered. Punctuation is not recognized, except that you can add a -L or -R suffix to generate the word 'link' or 'repeater' after your callsign, if desired.

External file: If you prefer to create your own voice ID, select this option and choose the '.' button to locate the file. This file must be a WAV file in 8-bit, 8000Hz, PCM Mono format. It is recommended to keep it as brief as possible, since a long announcement may interfere with smooth audio operation while in contact with another station.

Test: Choose this button to have EchoLink key the radio and identify according to the selected options.

Note: It is appropriate for a Sysop station to use its own callsign as the 'legal' ID, without any sort of special suffix. In the U.S. (and likely in most other countries), there is no requirement that this ID be the same as that of the repeater to which it is tuned, since it is considered a separate station.

Identify: Select any of these options, in any combination, to specify when EchoLink should send an on-air station ID.

Each time station connects: If this option is selected, your callsign will be announced immediately before the 'connected' announcement when a station connects over the Internet. Note that if Auto-Announce is enabled (on the Options tab), you will hear both your own call and the call of the connecting station, as in 'K1RFD Link Connected AK8V Repeater'. If Morse is selected, the Morse ID is played concurrently with the announcement.

Each time a station disconnects: If this option is selected, your callsign will be announced immediately after the 'disconnected' announcement when a station disconnects.

At end of transmission, every n min: Select this option, and enter the number of minutes, to have EchoLink announce your callsign periodically during a lengthy connection. If this option is selected, your callsign will be announced immediately after the remote station has finished speaking, and just before EchoLink un-keys the transmitter, but not more often than the number of minutes specified.

While active, every n min: Select this option, and enter the number of minutes, to have EchoLink announce your callsign periodically while the link is in use. The ID will be played the first time the transmitter is keyed, and then at n-minute intervals thereafter if there has been any transmission since the last ID. If the option Wait for clear frequency is selected, EchoLink will defer the ID if the link receiver is busy when it comes time to ID.

While not active, every n min: Select this option, and enter the number of minutes, to have EchoLink announce your callsign periodically when there has not been any transmissions on the link (regardless of whether anyone is connected). The first ID will be played when EchoLink starts up. If the option Wait for clear frequency is selected, EchoLink will defer the ID if the link receiver is busy when it comes time to ID.

Options Tab

The Options tab controls several other options for EchoLink.

Announce connects: Select one of the available options to control how EchoLink signals that a station has connected.

• None: No Connect announcement is made when a station connects (unless a local DTMF command invoked it).
• All users: A Connect announcement is made each time a station connects.
• First conferencee only: A Connect announcement is made when a station connects, but only if no other users are already connected.

Include callsign: If this box is checked, EchoLink will include the callsign of the newly-connected station in the Connected announcement.

Announce disconnects: Select one of the available options to control how EchoLink signals that a station has disconnected.

• None: No Disconnect announcement is made when a station disconnects (unless a local DTMF command invoked it).
• All users: A Disconnect announcement is made each time a station disconnects.
• Last conferencee only: A Disconnect announcement is made when a station disconnects, but only if no other users remain connected.

Include callsign: If this box is checked, EchoLink will include the callsign of the newly-disconnected station in the Disconnected announcement.

Announcement muting: Select one of the available options to control how Connect and Disconnect announcements are done if the link frequency is busy.

• No muting: Connect/Disconnect announcements are played even if the frequency is busy.
• Mute if freq is busy: Connect/Disconnect announcements are not played if the frequency is busy.
• Defer if freq is busy: Connect/Disconnect announcements are not played if the frequency is busy, but are deferred until the frequency becomes clear. The announcement is cancelled if more than 2 minutes has elapsed since the event.
• Suppress all: No Connect/Disconnect announcements are ever played, even if invoked from a local DTMF command.

Play welcome message to connecting station: Select this option if you wish to prepare a voice message to be played to stations that connect from the Internet. This message will not be heard over the local link. If this option is selected, choose the '.' to locate the WAV file to be played. The WAV file must be recorded at an 8kHz (8000 Hz) sample rate, using one channel (mono).

It is recommended that you keep such a message very brief (under 5 sec), as a long message may interfere with normal voice operation.

Play courtesy tone: Select this option if you wish EchoLink to play a brief tone at the end of each transmission from the Internet. To use a custom WAV file instead of the default tone, select a custom signal for Courtesy Tone on the Signals tab.

Play activity reminder every n sec: If you are running a Repeater link, select this option to have EchoLink to play a brief tone in between overs on the local link periodically while a station is connected. This tone serves as a reminder to stations engaged in a local QSO that at least one station is (still) connected to the link, and thus to leave a longer pause between overs to allow the remote station to break in. To use a custom WAV file instead of the default tone, select a custom signal for Activity Reminder on the Signals tab.

Max key-down time (sec): Enter the maximum number of seconds you wish to allow the local transmitter to remain keyed in a single transmission. If an incoming signal (from the Internet) exceeds this time, EchoLink will disconnect the station and un-key the local transmitter. To disable this feature, enter 0.

Dead-carrier timeout (sec): Enter the maximum number of seconds you wish to allow a station to transmit to your station (over the Internet) without providing any audio. If an incoming signal exceeds this time, EchoLink will disconnect the station. To disable this feature, enter 0.

Announcement pre-delay (ms): Enter the amount of time, in milliseconds, that EchoLink should pause between keying the PTT and beginning an announcement. The default is 150ms. This can be extended if announcements are being clipped at the beginning when heard.

Signals Tab

The Signals Tab controls announcements which are made on-air when certain system events occur.

For each event in the list, there is the option of using either the Default announcement, or a custom WAV file you provide.

Note that any custom WAV files you provide must be in 8-bit, 8000Hz PCM Mono format. Selection of any other type of WAV file will produce an error message.

To change the setting for a particular event, select the event in the list, and select either Default or Custom. If Custom is selected, choose 'Select.' to locate the WAV file you wish to use.

To test the announcement signal for an event, select the event and click the loudspeaker icon. (This function works only when no station is connected.)

Os x 10.3 dmg download. The Station Info announcement is played whenever a station enters the Station Info DTMF sequence, which by default is the star key (*).

The Courtesy Tone sound is played only if 'Play courtesy tone' is enabled on the Options tab.

The Activity Reminder sound is played only if 'Play activity reminder' is enabled on the Options tab.

Note that the events in list apply only to Sysop mode.

Speech Speed: Select Normal, Slow, or Fast. If Fast is selected, words are overlapped slightly to shorten announcement time; if Slow is selected, extra space is placed between words to improve intelligibility. (These settings do not apply to any Custom WAV files.)

Tone Burst: Some repeaters require a brief tone signal to activate them. If the local repeater has such a feature, EchoLink can send a tone burst at the beginning of each transmission, or when a remote station initially connects. Several tone frequencies are available (1750 Hz is the most common), and the duration is adjustable.

Remt (Remote Control) Tab

For convenient 'wireline' remote control, EchoLink has two built-in options.

The first is a built-in, password-protected Web server which allows the station to be remotely controlled from any Web browser connected to the Internet. The Web server displays an HTML page which displays the current status of the program, and allows the link to be enabled or disabled, and stations to be connected or disconnected. The page also shows recent entries from the System log. Settings in the top section of this tab control whether the Web server is enabled, and how it is configured.

The second option works with a 'voice modem' connected to your PC, and allows EchoLink to be remotely controlled from a touch-tone telephone. The program answers an incoming call, accepts DTMF commands over the call, and allows the caller to monitor the audio going through the link.

Enable Web remote control: Select this option to enable the built-in Web server. If you select this option, be sure to enter the other information below.

TCP Port: The TCP port number on which the Web server will operate. The default is 8080, to avoid conflict with other Web services which may already be running on port 80. You may need to change this setting if your firewall (or ISP) does not permit inbound traffic on port 8080.

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Username, Password: If you would like the Web server to be password-protected (recommended), enter a user name and password. When accessing EchoLink from a remote Web browser, a box will pop up prompting you to enter this information in order to gain access.

Notes:

If you have activated the Web server on port 8080, the URL for accessing it will be http://hostname:8080/ , where 'hostname' is the name or IP address of your computer. (If you are using a dial-up or DSL connection to the Internet, keep in mind that your hostname and/or IP address may change each time you reconnect to the Internet.)

If you are operating EchoLink behind a firewall (such as a cable or DSL router), be sure to configure the firewall to forward inbound traffic on TCP port 8080 to the computer running EchoLink.

Enable dial-in remote control: Check this box to have EchoLink accept DTMF control-operator commands from an incoming telephone call.

Voice-modem device: If more than once voice modem is connected to your PC, choose the device you wish to use with EchoLink. If this option is disabled, it means that EchoLink did not detect any compatible devices. See Notes for more information.

Answer on n rings: Determines how many times the line will ring before EchoLink answers the call.

Timeout (sec): Sets the amount of time after the last DTMF command that EchoLink will keep the line open before hanging up. (Most voice modems will also hang up the line shortly after the caller hangs up.) Set the timeout to 0 to keep the line open as long as the caller remains off-hook.

Audio level: Sets the audio level from EchoLink to the telephone line. Move the slider to the right to increase the level.

Audio Monitor: Check this box to allow audio from the QSO to be heard over the telephone line while the control operator is connected. Un-check this box if your voice modem is not able to detect DTMF digits while sending audio through the phone line.

Passcode: Sets the DTMF sequence that the caller must supply before being allowed access to the link. This field may be left blank.

Notes:

This feature requires that a TAPI-compatible voice modem be installed. In contrast to a conventional modem, a voice modem is one that can place or accept voice calls, and is often used with speakerphone or answering-machine PC software. The most common (and inexpensive) type of voice modem is the internal PCI 'winmodem' type, although not all winmodems are voice modems. Check the product literature for references to 'telephone answering machine' or 'speakerphone' to determine if a particular modem has voice capability.

Although EchoLink has been tested with several different makes and models of voice modems, compatibility with all models cannot be assured. When installing the modem, be sure that the matching voice-modem drivers are installed as well. Windows 95 users should also be sure that the TAPI 1.4 and Unimodem/V updates have been applied, since these are not present in a base Windows 95 installation.

When dialing in to EchoLink over the telephone, EchoLink will pick up the line and announce 'EchoLink <callsign>' to the caller. If a passcode was configured, the caller must enter the correct DTMF passcode. Echolink then announces 'Enabled'. At this point, it is ready to accept DTMF commands, and the caller will hear the link audio, if a QSO is in progress and the Audio Monitor box is checked. Since there is no carrier detect over the telephone, allow 3 seconds after each DTMF sequence for the command to be recognized, or use the pound sign (#) as a terminator.

If the telephone line and the voice modem both support Caller ID, the caller's name and telephone number will appear in the System log.

RF Info Tab

The RF Info tab is used to provide information about your link which may be helpful to nearby stations trying to locate it. EchoLink includes an implementation of the Automatic Voice Reporting System (AVRS), which uses the APRS® network and protocols to disseminate real-time information about VoIP links such as EchoLink nodes. This feature was developed in collaboration with Bob Bruninga, WB4APR. The program also provides a mechanism for collecting and displaying this information on the Web, as an adjunct to APRS.

If you wish to disseminate basic information about your simplex link, or the repeater to which your repeater link is connected, you can enter it here. By default, the information is transmitted to a central database on the Internet upon startup, and again each time a station connects or disconnects from your link. This information will be displayable and searchable on the EchoLink Web site.

If a packet TNC is connected to your computer, and the APRS option is enabled, the same information will be sent periodically to local users using APRS. Mobile stations equipped with APRS often have alphanumeric displays which will show the location and status of your node, if they in range of your APRS transmission or a nearby digipeater. Future APRS software may include the ability to allow a mobile station to send a general query for local EchoLink activity.

The information fields on the RF Info Tab are defined by the AVRS spec as follows:

• Lat: Station latitude, in degrees and decimal minutes. For example, 41.1175 degrees is 41 degrees, 07.05 minutes. Be sure to indicate North or South.
• Lon: Station longitude, in degrees and decimal minutes. Be sure to indicate East or West.
• Power (W): Transmitter power, as measured at the feedpoint of the antenna.
• HAAT (ft): Antenna height above average terrain, in feet. Note that this is the height of the antenna above average ground, not the elevation above sea level.
• Antenna gain (dB): Antenna gain in the favored direction, rounded to the nearest decibel.
• Directivity: General direction, if any, in which signals are favored by the antenna.
• Freq (MHz): Frequency on which the link receives. If the link is to a repeater, this is the output frequency of the repeater.
• PL (if any): CTCSS frequency, if any, required to activate the link (or to activate the repeater to which the link is tuned).

If you do not wish to provide or disseminate any of this information, enter 00 00.00 for Lat and 000 00.00 for Lon.

Values for some of these items are limited to a small set of choices, due to the way the data is encoded in the AVRS specification.

The following options are also available:

Report Status via APRS: If using a TNC to disseminate status information over APRS, check this box and confirm the settings below.

TNC Interface: Serial port to which the packet TNC is connected. EchoLink will access the TNC through this port at 9600 bps. Be sure this port is not already in use by another application. However, if you are using the program UIView32, you can configure UIView32 to communicate directly with the TNC, and choose the UIView32 option to have EchoLink share the TNC with UIView32. The only limitation is that UIView32 cannot use the TNC in KISS mode.

Auto Initialize: Check this box to have EchoLink set the TNC parameters automatically at startup. If enabled, EchoLink will attempt to put the TNC into command mode, set the UNPROTO path, and then put the TNC into converse mode. Otherwise, EchoLink assumes that these steps have been performed manually before EchoLink is started.

Unproto Path: If Auto Initialize is enabled, choose one of the paths from this list. This affects the way outgoing packets are addressed, and whether they will be accepted and relayed by a digipeater. A common setting is RELAY.

Include name(s) of connection stations in status: If checked, EchoLink will include the callsign of the connected station when it sends a status report over the APRS network. Otherwise, the report only indicates that the link is in use.

Comment: Enter up to 8 characters (letters, numbers, or spaces) which will be appended to the report. This information will appear along with the APRS status report, and is visible on the screen of some mobile stations.

For more information about the AVRS specification, please see http://web.usna.navy.mil/~bruninga/avrs.html

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Introduction

Portmon is a utility that monitors and displays all serial andparallel port activity on a system. It has advanced filtering and searchcapabilities that make it a powerful tool for exploring the way Windowsworks, seeing how applications use ports, or tracking down problems insystem or application configurations.

Portmon 3.x

Version 3.x of Portmon marks the introduction of a number of powerfulfeatures.

• Remote monitoring: Capture kernel-mode and/or Win32 debug outputfrom any computer accessible via TCP/IP - even across the Internet.You can monitor multiple remote computers simultaneously. Portmonwill even install its client software itself if you are running iton a Windows NT/2K system and are capturing from another WindowsNT/2K system in the same Network Neighborhood.
• Most-recent-filter lists:Portmon has been extended withpowerful filtering capabilities and it remembers your most recentfilter selections, with an interface that makes it easy to reselectthem.
• Clipboard copy: Select multiple lines in the output window andcopy their contents to the clipboard.
• Highlighting: Highlight debug output that matches yourhighlighting filter, and even customize the highlighting colors.
• Log-to-file: Write debug output to a file as its being captured.
• Printing: Print all or part of captured debug output to aprinter.
• One-file payload:Portmon is now implemented as one file.

The on-line help-file describes all these features, and more, in detail.

Installation and Use

Simply execute the Portmon program file (portmon.exe) and Portmonwill immediately start capturing debug output. To run Portmon onWindows 95 you must get the WinSock2update from Microsoft. Notethat if you run Portmon on Windows NT/2K portmon.exe must be locatedon a non-network drive and you must have administrative privilege.Menus, hot-keys, or toolbar buttons can be used to clear the window,save the monitored data to a file, search output, change the windowfont, and more. The on-line help describes all of Portmon's features.

Portmon understands all serial and parallel port I/O control (IOCTLs)commands and will display them along with interesting informationregarding their associated parameters. For read and write requestsPortmon displays the first several dozen bytes of the buffer, using'.' to represent non-printable characters. The Show Hex menu option letsyou toggle between ASCII and raw hex output of buffer data.

How it Works: WinNT

Advanced Serial Port Monitor Activation Key

The Portmon GUI is responsible for identifying serial and parallelports. It does so by enumerating the serial ports that are configuredunder HKEY_LOCAL_MACHINEHardwareDeviceMapSerialComm and theparallel ports defined underHKEY_LOCAL_MACHINEHardwareDeviceMapParallel Ports. These keyscontain the mappings between serial and parallel port device names andthe Win32-accessible names.

When you select a port to monitor, Portmon sends a request to itsdevice driver that includes the NT name (e.g. deviceserial0) thatyou are interested in. The driver uses standard filtering APIs to attachits own filter device object to the target device object. First, it usesZwCreateFile to open the target device. Then it translates thehandle it receives back from ZwCreateFile to a device objectpointer. After creating its own filter device object that matches thecharacteristics of the target, the driver callsIoAttachDeviceByPointer to establish the filter. From that point onthe Portmon driver will see all requests aimed at the target device.

Portmon has built-in knowledge of all standard serial and parallelport IOCTLs, which are the primary way that applications and driversconfigure and read status information from ports. The IOCTLs are definedin the DDK file ddksrccommincntddser.h andddksrccommincntddpar.h, and some are documented in the DDK.

Advanced Serial Port Monitor Activation

How it Works: Windows 95 and 98

On Windows 95 and 98, the Portmon GUI relies on a dynamically loadedVxD to capture serial and parallel activity. The Windows VCOMM (VirtualCommunications) device driver serves as the interface to parallel andserial devices, so applications that access ports indirectly use itsservices. The Portmon VxD uses standard VxD service hooking tointercept all accesses to VCOMM's functions. Like its NT device driver,Portmon's VxD interprets requests to display them in a friendlyformat. On Windows 95 and 98 Portmon monitors all ports so there is noport selection like on NT.

Advanced Serial Port Monitor Activation Download

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