EMA Packet infrastructure notes

The VHF frequency 145.09 is pretty busy these days. I took a look at what my station is hearing today and also what the BROCK node is hearing. The ax2 interface is the active radio interface:

/uronode$ J
Just Heard list:
Callsign Device Packets Date & Time Frame Type(s)


W1ZSA ax2 1247 Jun 22 12:44:22 Text
W1ZSA-1 ax2 1303 Jun 22 12:44:22 Text
KA1VSC-5 ax0 51752 Jun 22 12:44:04 NetRom
KZ2X ax2 814 Jun 22 12:42:01 Text
KD1CY ax2 469 Jun 22 12:41:23 Text
N1UMJ ax2 1971 Jun 22 12:40:39 Text
N1XTB-4 ax2 8348 Jun 22 12:40:04 Text
W1MV-7 ax2 6838 Jun 22 12:39:30 Text
KW1U-1 ax2 1767 Jun 22 12:38:26 Text
N1IQI ax2 3267 Jun 22 12:38:06 Text
W1SGL-10 ax2 4400 Jun 22 12:36:49 Text
KF1D-10 ax2 2406 Jun 22 12:36:29 Text
WB2CMF-5 ax0 15497 Jun 22 12:31:07 NetRom
WA1PLE-2 ax2 4191 Jun 22 12:17:27 Text
WX1BOX ax2 1165 Jun 22 11:56:56 Text
KW1U ax2 3524 Jun 22 10:27:13 Text
N1IQI-1 ax2 381 Jun 21 22:02:41 Text
ax2 2573 Jun 17 14:02:57 Text
W1JT-3 ax2 53 Jun 9 11:09:48 Text
WB2CMF-15 ax0 10 May 23 15:34:54


To get a bigger picture, the BROCK node has a large footprint, so took a look at what it hears using the long form JHeard command:

uronode$ c ax2 brock
link setup (ax2)…
*** connected to BROCK

CONNECTED TO NODE BROCK(W1MV-7) CHANNEL A

Welcome to BROCK (W1MV-7) in Brockton, Mass
ENTER COMMAND: B,C,J,N, or Help ?
J L
WX1BOX > W1SGL-10 06/21/22 06:27:47
KF1D-10* > AB1PH-10 06/21/22 06:37:17
VIA WA1PLE-2 N1IQI > BEACON 06/21/22 06:38:56
VIA BROCK KZ2X > BEACON 06/21/22 06:42:51
VIA BROCK W1ZSA > BEACON 06/21/22 06:45:05
VIA WA1PLE-2 W1ZSA-1 > MBX 06/21/22 06:45:05
VIA WA1PLE-2 W1SGL-10 > BEACON 06/21/22 06:45:43 WA1PLE-2 > BEACON 06/21/22 06:48:17 AB1PH-10 > WL2KUS-5 06/21/22 06:53:26 KC1CNP > BEACON 06/21/22 06:55:00 KW1U-1 > ID 06/21/22 06:59:28 W1MV-7 > ID 06/21/22 07:00:20 N1XTB-4 > FBB 06/21/22 07:00:54
VIA *BROCK
N1XTB-7 > ID 06/21/22 07:00:55
KD1CY > N1XTB-10 06/21/22 07:03:58
N1XTB-10 > KD1CY 06/21/22 07:04:22
BROCK > N1XTB-15 06/21/22 07:04:32
N1XTB-15 > BROCK 06/21/22 07:04:37

Don Rolph AB1PH has done quite a bit of work keeping track of the Winlink and APRS stuff going on. Hope to provide some of Don’s information shortly.