[Elecraft] K1 Bandwidth

[jimimaxi2 at comcast.net]

What is the BW of the signal produced by the K1? 

I was keying on 3.550 last night and noticed my Kenwood TS-480's S meter responding on 3.560. 



I thought the BW would be more in line with a 1kHz wide signal. 



Thanks in advance, 



Jim C 

KC2ROF 

K1 S# 2646