Golden Packet Comm Coordination Checklist
Last modified: Feb. 12, 2022
From aprs.org website dated: July 7, 2016
Below is a set of things that may make an operation during the ATGP event more successful and/or more enjoyable.
Importance of 2nd HT on 144.39 for receiving ANSRVR announcements
Temporarily turn off
INTERRUPTdisplay to see your D710 digi
BCONrate at Springer, Katahdin, & GD Hill. All others 10m
4 AH batery plus a spare seems to be enough for a 3 hour event
Minimize messages and if used, use
BLN#XXX’s to avoid
Communicate status by updating your status when things change
Camera: Take a camera and a book. Book is in case all work 100%.
Signal Mirror: For signalling other peaks in view as part of the Boy Scouts Operation On-Target or any other cooperating target. (Is this still something that’s happening? Have not heard of Boy Scout coordination lately.)
ARRL Pamphlets: Take ham rdio hand-out pamphlets for onlookers
APRS HT: (required) Use a 2nd APRS radio (HT) to maintain APRS text communications with the designated Shack Potato and all other stations using normal APRS on 144.390 MHz. Use the root callsign of your station without any SSID. Begin using it as you leave home! Periodically send status updates to ANSRVR with 1st words: “CQ AT …”
See http://aprs.org/ansrvr.html (Will need an updated link). The dual band APRS HT can also be used to monitor your local published voice repeater. Use EL power or long RG58 coax and a beam to the nearest digi to minimize self-QRM to your primary operations on 144.34 MHz.
BATTERY: You will need about 4 AHrs. Take two to have a main and a spare. And give you a half-way indiciation when the first one is out.
144.340 MHz DIGIPEATER: Set up your D7xx APRS digipeater radio BAND-A on 144.340 MHz and set the volume so you can hear what is going on on the channel. This channel is shared with Balloons and ATV, so we want to be aware of any conflicts, and hear how the packets are souding…
BAND-B on 445.925 MHz CTCSS 100: Use BAND-B on 445.925 MHz simplex for voice coordination to adjacent sites. This avoids QRM on the 2 meter event band! This is important! Also a VOICE-RELAY around a failed APRS mountain top will still count.
SETTINGS: Set up your radio as a HOPn-N and TEMPn-N digipeater operating in APRS mode. The D710’s can all be set from the front panel, but a PC is required for the initial setup of the D700 prior to the event, but is not required during operations. This digipeater radio will be used only for the 144.340 MHz DIGI, for APRS DIGI beacons (status text updated as needed) and for voice UHF coordination on 445.925 MHz voice. See radio settings:
** TURN OFF any AUTO-REPLY MESSAGES in digipeater radio!**
DUPLICATES: The D7XX has a bug that will cause your own station to digipeat its OWN packet a second time. Fortuntately the other digipeaters will not, because they will see that second one as a dupe. We just live with this quirk (and it does slightly improve success).
LOGGING: If possible, have a second APRS receive-only station running APRS on the event channel with a PC for logging all packets. This station can be left unattended down at the car or at home since it can hear all packets from your station’s digi. Do not let it beacon on the event channel! Even once…too much QRM.
COORDINATION/STATUS: Use your mobile (enroute) or your APRS HT (note 4 above), to be in communication