[GreenKeys] 'Russian woodpecker' of old...

[Keelan Lightfoot]

The noise blanker switch on my Yaesu FT-901DM finally makes sense! I always found it odd that they would include a filter designed specifically to remove pulsed noise; it seemed to specific.

- Keelan (VE7NCR)

On 2010-10-14, at 3:50 PM, Al Klase wrote:

> Ken,
> 
> The woodpecker was a Russian over-the-horizon radar system operating in 
> the HF bands.  Naturally they used the bands that were open.  It was so 
> bad that radios like the Kenwood TS-930 had separate woodpecker-tuned 
> noise blankers.  You'll find more that you want to know by googling 
> "russian woodpecker."
> 
> Al