Noise Blanker Model 249

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.

• 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.