Sunday, 09 March 2014 01:23

Send email with APRS

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Using a Kenwood TH-D72a HT to send and receive email via APRS

There are several ways to send an email using the APRS network.  In these examples I am using a Kenwood TH-D72A HT radio that has a built in TNC but you can certainly use this information to send emails using whatever APRS setup that works for you.

Even if you don't have any APRS iGates in your area, you can wait to send it when the ISS is to be flying overhead and send it through the space station!  There's ways to even update your twitter feed this way.

The methods here are to send a message from the APRS network to an email address

  • EMAIL
  • EMAIL-2
  • SAMAIL
  • WLNK-1

RF to Email

Method 1

EMAIL

Send an email by sending your APRS message directly to EMAIL.  This method is fairly straight forward but is limited to one line emails with a maximum count of 67 total characters.  The 67 maximum does not include the [Message To] (in this case EMAIL) but does include the [Message Body] (in this case the actual email address and email message including spaces).  This method does not allow for the email recipient to respond to your message.

APRS Message

[Message To]   [Message Body] - Max 67 Characters
    Recipient's emails address [space] message
EMAIL   This email address is being protected from spambots. You need JavaScript enabled to view it. Hi John, This is an email from my HT via APRS.

 

If you have your HT setup to send/receive APRS beacons using your TH-D72A radio to send an email is easy.  (If not check out my THD-72A APRS Quick Start Guide for some additional information)

  1. Power on the radio
  2. Confirm you have the TNC turned On in APRS mode
  3. Confirm you are tuned to the correct frequency (144.390 in US)
  4. Press MSG
  5. Press Menu
  6. Use the navigation pad to move down to New
  7. Press Right on navigation pad to select New
  8. You should read MSG Input > To:
  9. Type using the keypad or using the tuning knob on top to input EMAIL (now it should read MSG Input > To:EMAIL with the cursor on the L)
  10. Press Right twice (once to move cursor and once to complete the line)
  11. With the cursor now on the second line ([Message Body]) Type the email address (you can toggle #/ENT to find the @ and .)
  12. After the email address you NEED a space (type a space by pressing 0/DUAL key)
  13. After the email address and space type your message and when finished press Right twice

 

Raw packet found by searching http://aprs.fi/?c=raw&call= of an actual email I sent (I changed the email address in the example shown)

2014-03-09 10:09:12 CDT: KC9BUD-7>APK003,KF9D,K9ESV-10,WIDE2*,qAR,K9IJ::EMAIL    :This email address is being protected from spambots. You need JavaScript enabled to view it. This is a test! Pick up some milk {6

 

Method 2

EMAIL-2

Send an email by sending your APRS message directly to EMAIL-2.  This method is similar to the EMAIL method above but you have a few more options.

Shortcuts

With EMAIL-2 you can use shortcuts by sending a message to EMAIL-2 with the shortcut name then a [space] followed by the address you want to shorten.

Create shortcut me with my email address:

[Message To]   [shortcut name][space][address to shorten]
EMAIL-2   me This email address is being protected from spambots. You need JavaScript enabled to view it.

 

Create shortcut wife with her email address:

[Message To]   [shortcut name][space][address to shorten]
EMAIL-2   wife This email address is being protected from spambots. You need JavaScript enabled to view it.

 

Use shortcut me and send an email message (shortcut [space] message):

[Message To]   [shortcut name][space][Message Body]
EMAIL-2   me Hi this is an email test!

 

List all shortcuts used (email address to send info too [space] lower case L):

[Message To]   [shortcut name] l                                
EMAIL-2   me l

 

Remove individual shortcut (remove me as a shortcut by sending shortcut name [space] Lowercase R):

[Message To]   [shortcut name] r                                
EMAIL-2   me r

 

 If you have your HT setup to send/receive APRS beacons using your TH-D72A radio to send an email is easy.  (If not check out my THD-72A APRS Quick Start Guide for some additional information)

  1. Power on the radio
  2. Confirm you have the TNC turned On in APRS mode
  3. Confirm you are tuned to the correct frequency (144.390 in US)
  4. Press MSG
  5. Press Menu
  6. Use the navigation pad to move down to New
  7. Press Right on navigation pad to select New
  8. You should read MSG Input > To:
  9. Type using the keypad or using the tuning knob on top to input EMAIL-2 (now it should read MSG Input > To:EMAIL-2 with the cursor on the L)
  10. Press Right twice (once to move cursor and once to complete the line)
  11. With the cursor now on the second line ([Message Body]) Type the email address (you can toggle #/ENT to find the @ and .)
  12. After the email address you NEED a space (type a space by pressing 0/DUAL key)
  13. After the email address and space type your message and when finished press Right twice

 

Method 3

SAMAIL (Down??)

This server SAMAIL sounds like it should work similar as EMAIL-2 as it supports shortcuts and is supposed to send the sender an APRS message once the email has been sent.  I tested this on 2014/03/09 and I did not receive a response from SAMAIL nor did I receive the email message sent.

 

Method 4

WLNK-1

This server WLNK-1 ...[Need to add]

 

Email to RF

Method 1

EMAIL-2

The server EMAIL-2 allows people to email messages to the APRS network directly to your callsign so you can receive emails on your radio.

  • The email address sending the message to your callsign needs to be setup as a shortcut on the EMAIL-2 server (see above Method 2 under RF to Email)
  • The email message is limited to the subject line
  • Formatting is very specific

 

Send a message from email to a callsign (mind the colons as it will not work without them)

To: This email address is being protected from spambots. You need JavaScript enabled to view it.
Subject: [Callsign][SSID] : [Message]               
Body: userid:[shortcut]:

 

To: This email address is being protected from spambots. You need JavaScript enabled to view it.
Subject: KC9BUD-7:Hello this is a test message !!
Body: userid:me:

 

From the radio you can have the EMAIL-2 server re-transmit your emails again that are cached (EMAIL-2 caches emails for 24 hours) by sending get

[Message To]   [Message Body]                               
EMAIL-2   get

 

 

References

http://www.aprs-is.net/email.aspx

http://www.aprs.org/aprs-messaging.html

http://www.vk3.aprs.net.au/aprs_email_sms.htm

Read 10185 times Last modified on Thursday, 24 September 2015 15:16
Algis Salys

Creator and owner of algissalys.com.  Linux enthusiast, electronics tinkerer, and likes to spend time in the workshop building and creating new projects.