Shadowfetch Apps

Utilities

Bandwarden: RF Coordination

Wireless mic frequency plans

iOSfor iPhone and iPad

$2.99

  • $2.99 one-time purchase
  • No account
  • No ads or app telemetry

View on the App Store

Update guide

Version 4.0 (build 6)

This guide covers version 4.0. The current website catalog lists version 4.0. Check the App Store for availability on your device; the features below require version 4.0 or later.

Version 4.0 (build 6) is now available on the App Store. The following describes this update.

Bandwarden is an offline wireless-microphone and IEM frequency coordination tool for iPhone and iPad. It works out which TV channels are occupied at your venue from bundled FCC records, computes intermodulation products, assigns frequencies and checks them against the US wireless-microphone band rules.

NEW IN 4.0 Frequency List Check: paste or import any frequency list, such as a house coordination, a rental preset sheet or a WWB or IAS text export. There is no channel cap. Each frequency shows its spacing, 2T3O and 3T3O hits (and 2T5O hits when enabled), along with duplicates and the single frequency whose removal clears the most. You can share the report or add the list to the rig as locked channels. Compatible Set: builds up to 64 mutually compatible frequencies for any system in the rig or the systems database, computed for the venue’s TV exclusions and band rules and optionally around the rig already on stage. The full analysis confirms every set. App Shortcuts: “Check Frequency List” runs on the device and returns a verdict.

FIXES The coordinator now avoids 2T5O products when 2T5O checking is on. Reference plates are re-rendered so text no longer runs off the edge, and the worked example lists every product. The eight equal-spaced “compatible grid” plates are removed, because equal spacing is the worst case for intermod. Text follows Dynamic Type, small text has stronger contrast, and iPad layouts use a readable width.

HONEST BY DESIGN Bandwarden is a planning aid. Its results and bundled data do not make a frequency legal and do not guarantee interference-free operation. The rules summary (47 CFR 15.236, 74.802, 74.861 and 90.303, re-checked on 2026-11-08) is not legal advice. The FCC TV records are dated 2026-09-23, and low-power station contours are estimates. Always confirm with a scan on site.

No account, no ads, no analytics and no network access. One-time purchase, no subscription.

Guide updated 2026-11-12.

About Bandwarden: RF Coordination

NEW IN 4.0
• Frequency List Check: paste or import any frequency list (house coordination, rental sheet, WWB or IAS text export) with no channel cap. See spacing and intermod hits for each frequency, duplicates, and the best one to drop. Add the list to your rig as locked channels
• Compatible Set: up to 64 mutually compatible frequencies for any system, computed for your venue's TV exclusions and band rules
• App Shortcuts, Dynamic Type throughout, and the coordinator now avoids 2T5O products when you turn them on

REAL TV DATA FOR YOUR EXACT VENUE
Bandwarden works out TV channel occupancy from real FCC records. Set the venue (offline city or ZIP search, one-time GPS, or coordinates) and it lists every TV channel whose station contour covers that spot. Each channel shows the stations behind it with call sign, class, distance and margin. The data is bundled, so it works with no signal backstage.

• 9,939 US TV transmitter sites with contours, from FCC records dated 2026-09-23, covering full power, Class A, low power and translators
• Location rule built in: a channel is excluded when you're within a co-channel station's contour plus 4 km (47 CFR 15.236(e), 74.802(b)). You can raise the margin, count or ignore construction permits, and mark corrections for each show
• Land mobile channels in 470–512 MHz around 11 metro areas (47 CFR 90.303), plus the Hawaii channel 17 rule
• US band rules check with sources: each frequency is checked against the Part 15 and Part 74 wireless-mic bands. It flags licensed-only segments (653–657 MHz, 941–960 MHz and others) and frequencies no rule lists. Part 15 or Part 74 is set for each show
• Scan Check: peak level for each TV channel from your imported scan, a one-tap "mark busy channels", and the −84 dBm whole-channel indoor check that applies to Part 74 licensees
• Walk-In Finder: pick a guest's system and get clear frequencies ranked by headroom from predicted intermod, plus an estimate of how many more channels fit
• Add many channels at once (Vox 1–8), duplicate a channel, and DECT / 2.4 GHz / 5.8 GHz systems are tracked as self-managed instead of getting fake assignments
• Export frequency lists: a plan CSV plus one plain-text list per equipment profile (MHz, one per line) for import into coordination software. Share or import complete show files between devices and crew
• The PDF report adds an RF Environment page: excluded channels and why, rules flags and sources

COORDINATION ENGINE
• Rig builder with a database of 155 wireless mic and IEM systems from 30 manufacturers, each with tuning range, step and spacing, or define your own
• 2T3O, 3T3O and 2T5O intermod products with severity triage
• Constraint-solver auto-assignment that respects locks, spacing, TV exclusions, band rules and your scan, plus a backup frequency pool
• Changeover Plans: stage retunes, compare the whole rig before and after, then apply the reviewed set

SPECTRUM
• Import scan CSVs from common analyzers or any two-column frequency/level CSV
• Zoomable plot with scan, assignments, intermod products and exclusions
• Six example scans to learn the workflow

SHOWS & REFERENCE
• Show files hold the venue, rig, rules basis, corrections and notes. Duplicate a show for the next tour stop
• Printable PDF frequency report
• Built-in US band rules reference with links to the regulation text
• 27 reference plates: band plans, US rules, intermod primers and venue checklists

HONEST BY DESIGN
Bandwarden is a planning tool. Its results and bundled data don't make a frequency legal and don't guarantee interference-free operation. TV data can lag real stations, and low-power station contours are estimates. Always confirm with a scan on site and check the current rules for your situation.

PRIVATE AND OFFLINE
No account, no ads, no analytics, no network access. Location is optional and stays in your show on your device.

Works on iPhone and iPad. One-time purchase, no subscription.

A Shadowfetch app. Published on the App Store by Robert Corbin.