Are you ready to share your ham knowledge?
Great! CATS is a cutting edge portal into the newest ham radio technologies.
Great! CATS is a cutting edge portal into the newest ham radio technologies.
Chasing DX is fun but you need the right and antenna and tips from fellow hams when it's active.
Whether it's DMR, DStar, Fusion, or P25, we're there. We also sponsor many local repeaters.
Stay up to date with the latest weather alerts and help the NWS with Chicagoland Skywarn.
Learn all about what a simple microcomputer like the Raspberry Pi can do. Arduinos are fun too.
The Chicagoland Amateur Technical Society (CATS) is a group of inquisitive minds that share their technical knowledge and collaborate on hands-on projects. While we embrace the traditional amateur radio activities of chasing rare DX, contesting, or communicating on repeaters, we focus on new digital radio technologies. We share antenna designs and tips from years of experience. We dive into microcomputers and software defined radio projects. We support Skywarn in our area. We believe in the confluence of radios, computers, and the internet.
Helpful resources for the hobby.
December XX, 20XX
3pm
Julio's Tacos
We will discuss technical stuff and drink
Fun stuff to keep you busy as the weather gets colder.
Helpful Tutorials and Software
Solar ConditionsLatest |
Solar ConditionsLatest |
HF MUFLatest |
VHF/UHFDucting |
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This affiliated system is accessible via local RF repeaters below,
DStar DCS312B/REF312B, Fusion FCS08623 and Room 40911 (TriStateDMR), Allstar #45417, Echolink AA9VI-R #7641 |
| Location | Callsign | Frequency (MHz) | Offset (MHz) | Color Code | Timeslot | Talkgroup |
| Bolingbrook, IL | K9BAR | 443.7 | + 5.0 | 1 | 1 | 8 |
| Chicago, IL | AA9VI | 441.21875 | + 5.0 | 1 | 1 | 8 |
| Crown Point, IN | N9IAA | 444.35 | + 5.0 | 1 | 1 | 8 |
| Crystal Lake, IL | K9VI | 444.80625 | + 5.0 | 4 | 1 | 8 |
| Inverness, IL | K9ORD | 441.05 | + 5.0 | 1 | 1 | 8 |
| LaPorte, IN | N9IAA | 444.675 | + 5.0 | 1 | 1 | 8 |
| Schaumburg, IL | K9MOT | 444.80625 | + 5.0 | 1 | 1 | 8 |
| Valparaiso, IN | N9IAA | 441.21875 | + 5.0 | 1 | 1 | 8 |
| Location | Callsign | Frequency (MHz) | Offset (MHz) | Access | Description |
| Inverness, IL | K9ORD__C | 147.39 | + 0.6 | DStar, Fusion | |
| Inverness, IL | K9ORD__B | 441.05 | + 5.0 | CC1, NAC293 | DStar, Fusion, DMR, P25 |
| Inverness, IL | K9ORD | 445.55 | 114.8 Hz | Allstarlink #42060 |
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The P25 Midwest Bridge is not directly affiliated but is recommended.
System Status |
| Location | Callsign | Frequency (MHz) | Offset (MHz) | NAC | Talkgroup |
| Joliet, IL | K9FRG | 442.95 | + 5.0 | 293 | 10 |
| McHenry, IL | KB9I | 444.075 | + 5.0 | 057 | 10 |
| Round Lake Beach, IL | N9JSF | 443.775 | +5.0 | 057 | 10 |
| Schaumburg, IL | K9FRG | 442.9 | + 5.0 | 293 | 10 |
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Not affiliated but suggested. |
| Location | Callsign | Frequency (MHz) | Offset (MHz) | Dig-ID | Room |
| Northbrook, IL | NS9RC | 147.345 | + 5.0 | 00 | Minn.-Wisc. |
| Lisle, IL | WA9WSL | 442.225 | + 5.0 | 00 | |
| Michigan City, IN | W9LY | 441.950 | + 5.0 | 00 |
Feel free to share your projects also.
Maps, warnings, and other local information on our partner site ChicagolandSkywarn.org
Find out what we're doing and how you can share your ham knowledge.
