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Uniden BC246T · Volume 4

Uniden BC246T — Vol 4: Reference

Analog Motorola Type II + EDACS + LTR trunking

4.1 Tips and tricks

  • The analog Motorola Type II decoder is genuinely good. Where a flagship scanner with a busy DSP can occasionally lose control-channel lock at marginal SNR, the 246T’s simpler chain tends to hold lock longer. If you’re hunting an analog Type II signal at the edge of coverage, the 246T may actually outperform the SDS100 on raw control-channel acquisition. Voice quality once locked is FM, full-stop, and identical between the radios.
  • NiMH battery memory effects matter on this radio. NiMH chemistry does not develop memory the way old NiCd did, but it does develop a “voltage depression” effect from chronic shallow discharge that looks like reduced capacity. Periodically (every 10-20 cycles) run the cells to genuine empty (until the radio shuts off under its own power) and then fully recharge. This restores the voltage curve. The Eneloop generation of low-self-discharge NiMH tolerates partial discharge cycles better than older cells, but the full-discharge cycle every few months is still good practice.
  • Conventional analog scan rate is faster than every digital scanner in the lineup. The 246T claims ~100 channels per second on conventional scanning; the digital scanners (SDS100 ↗, BCD396XT ↗) drop to 30-60 channels/second because each channel demands a DSP demod attempt. If you’re plowing a 500-channel conventional list looking for activity, the 246T finishes the sweep faster.
  • Replacement BNC connectors are $2-5 and a five-minute solder job. The antenna jack is a standard female BNC mounted on the main PCB with a single ground tab and a center pin. If the jack ever gets sloppy, replace it — don’t tape over the problem.
  • The mini-USB programming jack is the weakest mechanical point. If you program this radio frequently, the jack eventually wallows out. Replacement micro-USB jacks (or the original Mini-B if you want to preserve cable compatibility) are available on LCSC for $0.50; the replacement job is a 15-minute hot-air or careful iron job on the main board.
  • The cellular block (824-849 / 869-894 MHz) is permanent in US-market units per Part 15.121. This was never user-defeatable on the 246T. The 800 MHz public-safety and 851-869 MHz business-band trunked allocations are fully coverable; cellular voice is not.

4.2 Resources

Manuals:

  • ../manuals/uniden-bc246t/BC246T Owners Manual.pdf — the original Uniden user manual (~80 pages, covers menu hierarchy, trunking setup, conventional programming, all menu options)
  • ../manuals/uniden-bc246t/BC246T Quick Start.pdf — laminate-friendly front-panel cheatsheet — TBD: verify whether this is in the manuals folder or needs to be downloaded

Vendor / community:

  • Uniden legacy product page: https://www.uniden.com — the 246T is end-of-life; documentation is in the legacy-product archive
  • RadioReference BC246T wiki: https://wiki.radioreference.com/index.php/BC246T — the community knowledge base, with current programming notes, ARC246 / PSREdit300 setup guides, codeplug-format reference
  • RadioReference frequency database: https://www.radioreference.com — the source-of-truth for whether a given local system is still on analog Motorola Type II / EDACS / LTR (and thus monitorable on this radio) or has migrated to P25 (and is not)

Third-party programming software:

  • PSREdit300 (Starrsoft): http://www.starrsoft.com — paid Windows tool, the original commercial PC programmer for the 246T-vintage Uniden trunking scanners
  • ARC246 (Butel): https://www.butel.nl — paid Windows tool, the Butel-family programmer for the same generation
  • FreeScan: https://www.freescan.eu — free Windows tool with partial 246T support (conventional channels yes, trunking systems mixed)

Cross-references: