Noise blanker 4-NB replacement for Drake R-4C

The well-known 4-NB noise blanker suppresses pulse-shaped noise on reception with the Drake R-4C receiver. Here you find a replacement for the original 4-NB noise blanker, made by Emco Electronics.

This 4-NB replacement is fully compatible with the original noise blanker from Drake.

EMCO Noise blanker 4-NB replacement for Drake R-4C

Features

Alignment procedures equal to original 4-NB noise blanker
All connections are compatible with the original 4-NB noise blanker
Performance similar to original 4-NB noise blanker

External Links

Drake NB-4 Noise Blanker Documentation on the WB4HFN site
(Description + Alignment (1), Alignment (2), Schematic Diagram).
General overview of the R-4C on the www.universal-radio.com site.
General overview of the R-4C on the www.rigpix.com site.

Audio Test Result

This audio file (mp3, 383 kB) demonstrates the 4-NB noise blanker replacement. Between 0:03 and 0:13 the noise blanker is switched on, before and after the noise blanker is switched off.

Part Number and Price (temporarily unavailable)

Part Number	Name	Price [Euro]
4-NB_REPL	Noise blanker 4-NB replacement for Drake R-4C	225.00

Additional information about this part number:

The 4-NB_REPL (Noise blanker 4-NB replacement for Drake R-4C) is a ready build, pre-aligned and tested PCB.
All prices are including 21% VAT.