Shure Block J50Awireless mic block coverage
572.175–615.85 MHz43.7 MHz tuning rangeULX-D J50A; avoids 608–614 MHz radio astronomy
TV channels overlapping this block
ch.31ch.32ch.33ch.34ch.35ch.36ch.37
DTV stations on these RF channels are the primary interference sources for mics in this block.
Nationwide coverage map — Shure Block J50A
Predicted RF congestion at 1.5° grid points across the contiguous US. Green = lower interference, red = heavier congestion from nearby DTV stations. Based on FCC seed data; verify with on-location scan.
Best US markets for this block
| # | Market | Status |
|---|---|---|
| 1 | Orlando–Daytona Beach | Recommended |
| 2 | Baltimore | Recommended |
| 3 | Hartford–New Haven | Recommended |
| 4 | Columbus, OH | Recommended |
| 5 | Milwaukee | Recommended |
| 6 | Cincinnati | Recommended |
| 7 | West Palm Beach–Ft. Pierce | Recommended |
| 8 | Greenville–Spartanburg–Asheville | Recommended |
| 9 | Oklahoma City | Recommended |
| 10 | Harrisburg–York–Lancaster | Recommended |
| 11 | Birmingham | Recommended |
| 12 | Norfolk–Virginia Beach | Recommended |
| 13 | Albuquerque–Santa Fe | Recommended |
| 14 | Louisville | Recommended |
| 15 | Memphis | Recommended |
| 16 | Providence–New Bedford | Recommended |
| 17 | Fresno–Visalia | Recommended |
| 18 | Nashville | Recommended |
| 19 | Atlanta | Recommended |
| 20 | Sacramento | Recommended |
Most congested markets for this block
| # | Market | Status |
|---|---|---|
| 1 | Seattle–Tacoma | Avoid |
| 2 | Chicago | Avoid |
| 3 | New York | Avoid |
| 4 | Washington, DC | Avoid |
| 5 | San Francisco Bay Area | Avoid |
| 6 | Kansas City | Avoid |
| 7 | Philadelphia | Avoid |
| 8 | Portland, OR | Avoid |
| 9 | Phoenix | Avoid |
| 10 | Indianapolis | Avoid |
Compatible Shure models
ULXD1 (ULX-D bodypack)TXULXD4 (ULX-D receiver)RX
Score your address with Shure Block J50A
Enter your shoot location to see how this block performs at your exact position — RF Scout will highlight which TV channels are active nearby and whether your block is usable.