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Ten-Tec Model 249 Noise Blanker for the Triton IV, 540 & 544 NEW in Box

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MPN:
249
Condition:
New
Shipping:
$7.00 (Fixed Shipping Cost)
  • Ten-Tec Model 249 Noise Blanker for the Triton IV, 540 & 544 NEW in Box
  • Ten-Tec Model 249 Noise Blanker for the Triton IV, 540 & 544 NEW in Box
  • Ten-Tec Model 249 Noise Blanker for the Triton IV, 540 & 544 NEW in Box
$74.99
Frequently bought together:

Description

Ten-Tec Model 249 Noise Blanker for the Triton IV, 540 & 544 NEW in Box

It is a fully assembled plug in board kit.

Description

Plug-in PC assembly for Models 540 and 544. Effectively blanks most impulse noise. Blanker is inserted into receiving I-F channel. Disable with switch on ALC control.

For 540 transceivers with serial numbers not starting with "T" and below 01349, order Model 249/MK.

Specifications

  • Input Frequency: 9 MHz.
  • Signal Gain: 0 dB.
  • Semiconductors: 1 IC, 6 transistors, 2 diodes.
  • Powered by transceiver
  • Size: HWL 3/4" x 2-5/8" x 4"
  • Weight: 1.5 oz.

 

Ten-Tec Model 249 Noise Blanker is a vintage optional accessory for the Triton IV transceiver series (Model 540 analog readout and Model 544 digital readout, produced late 1970s to early 1980s). It is an internal plug-in noise blanker board that installs in the receiver section to reduce impulse noise (e.g., ignition, power line, or atmospheric static crashes), a common issue in mobile or noisy environments. It was highly regarded by owners for its effectiveness on man-made noise, though not as advanced as modern blankers.Key Details and Specifications
  • Function: Clips impulse noise pulses from the IF chain before detection, improving readability on SSB/CW in noisy conditions.
  • Installation: Internal board that plugs into designated slots on the main board (simple drop-in for most Triton IV units; required soldering or connector mating per manual).
  • Compatibility: Specifically for Triton IV (540/544); not interchangeable with later models like Omni or Argosy without modification.
  • Era: Late 1970s (introduced with Triton IV production around 1978–1980).
  • Build: Small circuit board with components (transistors, diodes, etc.); often referred to as an "option board" in collector parlance.
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