[Elecraft] K2 vs OMNI V keying waveform?
[email protected]
[email protected]
Wed Apr 30 22:47:43 2003
Dave, W1EUY wrote:
"I have never (repeat, never) heard anything approaching clix from a K2
-- and I've worked a bunch."
==========
If you've been listening on a K2, you won't necessarily hear klix because
the K2's filters have very broad skirts.
Don't get me wrong. I'm not trying to badmouth the K2. I said that I
heard the the K2 had a "slight" problem. I only repeated what I read on
another e-mail reflector about the K2's CW waveform and CW bandwidth.
As I said, I haven't checked my own K2 yet, but I intend to, using the
prodedure I described in my post (listening on another receiver with
narrow filters that have steep skirts).
When it was first suggested that the FT-1000MP had klix, virtually all MP
owners denied there was a problem. I checked mine in another receiver
using 250 Hz filters with steep skirts. Sure enough, my MP's klix could
be heard over +/- 2 kHz off frequency. I performed a mod developed by a
knowledgeable ham and now the MP's klix are only +/- 300 Hz. Most of the
skeptics have accepted the fact that the MP was a clicky rig and many
have incorporated the mod in their MPs.
The fact is that many of today's modern rigs have excessive CW bandwidth
(klix). Icom 756s and 746s are about +/- 1 kHz, but Kenwoods seem pretty
clean (these observations are my own from listening to on-the-air
signals).
All of the K2s I have worked have been when using my own K2 (during the
EQP). As I mentioned, the K2's filters have skirts which are too wide to
determine the other rig's CW bandwidth, so I didn't notice any K2s with
excessive CW bandwidth.
I will make it a point to check my K2's CW bandwidth next week after the
DX Convention in Visalia, and I'll report the results (good, bad, or
indifferent) on the Elecraft Reflector.
Until then, I choose not to be a naysayer.
73, de Earl, K6SE