Uniden BC246T — Vol 4: Reference

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 programming connection is the Remote jack, not USB. The BC246T has no USB port. The PC cable plugs into the Remote jack on the right side and ends in a DB9 serial connector; a PC without a serial port needs Uniden’s USB-1 adapter (Prolific PL2303) and its driver.
• 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 Firmware and software on this site

Every firmware and software release archived for the BC246T, including superseded versions, is listed at scanners.fubsypoly.com/downloads/#uniden-bc246t. Each hosted download is the original publisher’s file, unmodified, packaged with a README and SHA-256 checksums and malware-scanned; each release page carries the full README and the other versions.

Table 1 — Firmware and software on this site

Product	Recommended release
BC246T firmware	2.60.00
FreeSCAN	2.18-beta6
ProScan	paid — vendor only
BC_VUP firmware updater	3.03.00
BC246T Uniden Advanced Scanner Director (UASD)	2.0.1.7 — paid — vendor only
USB-1 cable driver (Prolific PL2303)	1.6.0

4.3 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 (Sixspot Software): https://sites.google.com/site/sixspotsoftware/downloads — free Windows tool that lists the BC246T as supported (its trunking support has not been assessed here)

Cross-references:

• Vol 1 (Overview, decision graph) — where this radio sits in the lineup
• Vol 16 (BCD396XT) — the digital handheld successor; what the 246T points to when “I need P25 too” is the question
• Vol 13 (SDS100) — the modern flagship handheld; the radio that has fully superseded the 246T in active use
• Vol 18 (BC350A) — sibling legacy Uniden, desktop form factor, analog-only
• Vol 3 (Programming software landscape) — the full deep dive on PSREdit300, ARC246, FreeScan, ProScan, Sentinel, and the Uniden CPS history
• Antennas Vol 9 (Portable & mobile monopoles) — handheld whip menu
• Antennas Vol 29 (Use-case Matrix) — per-radio antenna recommendations including the legacy Uniden handhelds