[Elecraft] OT: 20m moving QRM.

[Walter Underwood]

When QRM and QRN were codified, there was little or no RFI. I try to use “RFI” instead of “QRM” or “QRN”. Everyone understands that. 

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Mar 3, 2016, at 4:12 PM, Mike <mghutchins at xtra.co.nz> wrote:
> 
> I have no way of verifying this, and I only date back to the 1950s as both ham and commercial operator. But always understood that the N (as in QRN) meant the interference was from 'Natural' sources and the M (as in QRM) meant that the interference was from 'Man-made' sources.
> Guess only those who formulated the original Q-codes could tell us.....and they will all be SK by now!
> 73 de Mike, zl1mh.
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