In order to enable an iCal export link, your account needs to have an API key created. This key enables other applications to access data from within Indico even when you are neither using nor logged into the Indico system yourself with the link provided. Once created, you can manage your key at any time by going to 'My Profile' and looking under the tab entitled 'HTTP API'. Further information about HTTP API keys can be found in the Indico documentation.
Additionally to having an API key associated with your account, exporting private event information requires the usage of a persistent signature. This enables API URLs which do not expire after a few minutes so while the setting is active, anyone in possession of the link provided can access the information. Due to this, it is extremely important that you keep these links private and for your use only. If you think someone else may have acquired access to a link using this key in the future, you must immediately create a new key pair on the 'My Profile' page under the 'HTTP API' and update the iCalendar links afterwards.
Permanent link for public information only:
Permanent link for all public and protected information:
DMR spectrum utilization is suboptimal using conventional network topologies. Trunking is a natural fit for DMR given its TDMA nature. This talk explains how controllerless DMR trunking works and how it can scale vertically to address shortcomings of conventional DMR systems. We then explore a theoretical implementation of a trunked DMR system in the amateur radio spectrum, how that might be managed and administered, and what advantages and disadvantages is has in relation to current systems.
I can do a presentation and show-and-tell on mag loop antennas. I have also performed WSPR test results against other antennas for comparison. Mark Skelton has seen the presentation at LARC.
Ron Schwartz 720-415-3080
PiPat: A Winlink Hotspot30m
Winlink email continues to be a highly-used system in incident management and disaster response operations. However, the primary client software, Winlink Express, runs only in the Windows OS, which poses problems for operators who primarily run other operating systems.
Inspired by Mark Griffith KD0QYN's PiGate concept and hardware, PiPat combines a Raspberry Pi computer, TNC-Pi 2 board and the Pat web-based Winlink client to deliver an integrated, modern solution for Winlink operation.
PiPat is usable with smartphones and tablets and works for a variety of use cases. In addition to being an economical AX.25 packet and Winlink station, it can also serve in emergency response roles. For example, it could be deployed at an emergency shelter to allow laypeople to send and receive emails to loved ones via Winlink from their own devices while still giving the ham operator control over transmission. It can be attached to an existing WiFi network or establish itself as an independent WiFi access point. The system supports UHF, VHF and HF transceivers and protocols.
Anyone that has used the Colorado Connection's 145.31 Thorodin repeater
has used voted receivers to access the repeater.? These voted receivers
improve coverage for lower power users and users operating in challenging
places for access to this repeater. This talk describes the problem that
voted receivers help with, analog voting hardware from the past,? the
challenge of voting receivers across variable latency Ethernet
connections, hardware currently in use and an intro to some future
A DMR System Dashboard30m
The Rocky Mountain Ham Radio DMR network has grown to over 30 repeaters, linked together through a single, commercial call routing device known as a C-Bridge. The C-Bridge provides a complex, web-based interface used by System Administrators to configure and monitor the repeater network. This talk describes the tools, techniques, and design used to produce a simplified user dashboard that collects information from the C-Bridge administrator web pages, and allows members to monitor activity on the RMHam DMR network.
Exploring slot antennas for mobile applications30m
Early investigations and experiments regarding vehicular slot antennas for VHF & UHF mobile applications. Construction, radiation patterns, feeding, matching, other practical concerns.
This is an open investigation. There will probably be more questions than answers. The content and the author's disposition will continue to evolve up to and possibly throughout the presentation.