Description

Genuine Astec UM1233 UHF Modulator (Channel 36) – New Old Stock

Restore the crystal-clear RF signal on your vintage 8-bit hardware with this genuine Astec UM1233 UHF Modulator. These are New Old Stock (NOS) components, originally manufactured circa 1987 and kept in pristine, unused condition.

As an analogue modulator tuned to UHF Channel 36, it is the industry-standard component for many iconic 1980s home computers. Whether you are performing a full restoration or fixing a “no signal” issue, this is the authentic replacement part required for a factory-standard repair.

Key Compatibility:

Sinclair: ZX Spectrum 16k / 48k (Rubber Key & Plus models), ZX80, ZX81
Acorn/BBC: BBC Micro Model B, Acorn Electron
Other Systems: Compatible with various 1980s PAL-I video circuits requiring a Channel 36 RF output.

Specifications:

Brand: Astec
Model: UM1233 / UM1233-E36
Frequency: UHF Channel 36
Condition: New Old Stock (Unused)

Era: Manufactured approx. 1987

Additional information

Weight	0.250 g
Dimensions	4 × 3 × 1.5 cm

Reviews

There are no reviews yet.

Be the first to review “Astec UM1233 UHF Modulator Channel 36 – Replacement for ZX Spectrum, ZX81 & BBC Micro (NOS)”

Astec UM1233 UHF Modulator Channel 36 – Replacement for ZX Spectrum, ZX81 & BBC Micro (NOS)

Restore your vintage computer’s video signal with this genuine Astec UM1233 UHF Modulator (Channel 36).

These are New Old Stock (NOS) units manufactured in 1987, offering a direct, unused replacement for the Sinclair ZX Spectrum 16k/48k, ZX81, and BBC Micro.

Ideal for authentic retro hardware restoration and RF signal repair.