My S/N 195 has a 1 microfarad installed and has what I would call an 8 mS
rise time.
Don K7FJ
----- Original Message -----
From: "GW0ETF" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Friday, March 28, 2008 6:48 AM
Subject: Re: [Elecraft] K3 Enhancements and Application Notes Page (CW
risetime)
According to the Application Notes Page my K3 #145 should have an ~8ms
rise
time. However, viewed on my analogue 'scope the rise time (0 - 100%) is
definitely shorter and nearer to 5ms with a similar fall time though with
a
sharper falling transition edge.
The notes suggest the mod is necessary to enable a future menu selectable
envelope adjustment but I don't want to reduce my rise time to a nominal
5ms
if it already is around that figure anyway - presumably I will end up with
an even steeper leading edge.
Anyone else looked at keying waveforms in pre s/n 211 K3s...?
Stewart Rolfe, GW0ETF
Eric - WA6HHQ wrote:
At long last we have the K3 Enhancements and Application Notes Page, and
K3 enhancements parts kits order form, on-line. :-)
See: http://www.elecraft.com/K3/k3_app_notes.htm
and:
http://www.elecraft.com/order_form_parts.htm#K3%20Parts
There are .pdf documents for each item, along with the approximate date
and s/n of any K3 enhancement phase in.
73, Eric WA6HHQ
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