This is an old revision of the document!
Noise Blanker Model 249
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.