ATC: 121.5 Aviation Emergency, Snohomish County airports, Air2Air
Live Audio
Feed Details
| Feed ID | 45506 |
| Genre | Aviation |
| Status | Offline (2h 35m) |
| Listeners | 0 |
| Status Message | Offline for site treework until at least Thursday night |
Feed Notes
Located at 600ft elevation near the King/Snohomish, WA county border, this feed is dedicated to high-responsiveness monitoring of the 121.5 Emergency Guard frequency comms in a range over 160 nmi and local North Sound general aviation, some KPAE traffic and Harvey Field, and Monroe airport and Air2Air comms.
Note: High-altitude traffic is mostly covered on my Stratosphere feed to preserve local channel purity. That feed pairs well with my larger KSEA/Seattle commercial aircraft feed.
Active Frequencies Covered:
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121.500 – EMERGENCY GUARD (VHF Distress)
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127.175 – PAE CLNC (Paine Field Clearance Delivery)
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123.000 – Harvey CTAF (Snohomish County)
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122.750 – Air-to-Air Operations
Prioritization Hierarchy:
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Tier 1 (Priority 10): 121.5 GUARD. Primary emergency monitoring.
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Tier 2 (Priority 6): PAE CLNC. Local Paine Field operations.
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Tier 3 (Priority 2): Harvey CTAF - Local recreational and training traffic.
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Tier 4 (Priority 1): Air-to-Air. Secondary pilot communications.
Technical Specs: Powered by an Airspy Mini SDR and Raspberry Pi 5 with a DPD Productions Airband antenna at 50ft AGL.