All my ramblings about amateur radio, SAP/ABAP, and gadgets/gizmos.
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APRS - switching off.. .. switching back on!
I'm switching off all my APRS equipment as of today. Just have been told that 9W's AA has no F1D/F2D in the emission code table, hence is not legal to transmit digital over 2m/VHF. I'm taking down all my previous postings on APRS so that they will not confuse the rest of us and I'll take them back online after the issue has been resolved.
Update: Just realised that even 9M's AA does not have this 'Digital' mode too.
Update 2: As of today, we've got a very good backing saying that it is not illegal to work on APRS. I'm turning back on my APRS digi/igate .. and my mobile too!
What is the easiest way to get echolink node up and running on raspberry pi? Surely, get a premade image which has everything inside. I've created one image which can fit into 2GB SD card for this, just follow the following steps to get it up and running:
For hardware, you need to have the following: Raspberry Pi for sure, with a minimum 4GB SD cardA USB echolink interface, can be commercially sourced or DIY. There are many DIY schematics out there that you could follow. Here is the configuration on how to get the things working together, courtesy of svxlink.de website:
For software: Download the following prepared image from google drive, it is based on raspbian-2015-02-16 image and has pre-installed svxlink-14.08. raspi-wheezy-svxlink.img.zipUnzip the file and copy it to your SD card using the following instructions that can be found here.Boot up the RasPi, if you do not have an HDMI monitor, you may want to access the RasPi from your terminal emulator (putty or the like), connec…
I've come across many posting on the Internet (via google search), people asking on how to debug a DMEE for payment program. One of the few suggestion was to create a user exit just before the node that we would like to debug and put our breakpoint there. It seems that SAP has built-in this feature without needing us to create a user exit (available in ECC 6, have no idea if this is available on prior releases). Here is how you can put your breakpoint without any coding.
1. Display your DMEE tree using transaction: DMEE_DEBUG.
2. Click on the node that you would like to debug.
3. Go to conditions tab, you could see the Set Breakpoint button. Click to set.
4. Run the SAPFPAYM and specified the payment run date/id, payment format etc. SAP will stop at the node which you point your breakpoint at, as in 2.
5. To remove your breakpoint, just run the DMEE_DEBUG again, there is an option to delete all own breakpoints or all.