On Mar 18, 2010, at 9:44 AM, lstavenhagen wrote:
Reason I ask is I decided to revisit my filter alignment (partly for an
educational exercise to learn how this all works) and after fighting with a
spectrum analyzer (iSpectrum on the mac, which just got me way off each
time) I abandoned ship
Hi Don,
Yeah, I've actually discovered that this is not very effective for the wider
filter bandwidths such as in SSB. I got them spot on in CW with the narrower
widths I use (1.40, .700, .400, .200) but in SSB I can't find the midpoint
very well at all.
I've decided, tho, to leave my K2 as-is
LS,
That method works, but it suffers from the fact that finding the actual
filter center frequency is difficult to do. As the filter width is
changed, the lower and upper skirts do not change at the same rate -
that is the main problem. Yes, you are correct that in 1999 tapping the
Hi all,
Not meaning to add to the wealth of info already on this topic, but I have a
specific question about the setting up your CW filters for the tonally
challenged article on the elecraft website.
Specifically, part of the instructions in it to read the BFO frequencies
after audibly finding
#2456
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED]
Sent: Saturday, July 01, 2006 12:57 AM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] K2 IF Alignment Question
The peak when adjusting L34 during IF alignment is at the top rather
Barker [EMAIL PROTECTED]
To: Elecraft@mailman.qth.net
Sent: Saturday, July 01, 2006 6:49 AM
Subject: RE: [Elecraft] K2 IF Alignment Question
You are not adjusting for the peak, you are adjusting for the maximum
signal/noise. It does not occur at the peak signal. Unless you are using
Spectrogram
The 'peak' on L34 is very broad and difficult to discern. It ideally should
be adjusted for the best signal to noise ratio.
If you use the 7000 KHz 'birdie' (no antenna connected), you can usually
hear the signal peak especially if you listen for the noise to minimize. A
Spectrogram display
I also found this procedure slightly confusing when I was going through it
yesterday. The manual tells you to use a DMM to measure AC volts in the speaker
out socket as an alternative to by ear assessment. I could measure the audio
volts out ok but it did not tell me anything about the signal
On Saturday 01 July 2006 00:57, [EMAIL PROTECTED] wrote:
The peak when adjusting L34 during IF alignment is at the top rather than
the l to 1 1/2 turns in mentioned in the manual. Has anyone else encountered
this?
73 Steve K8IDN
Steve,
It seemed like that to me too. I used
Happy Turkey Day to all,
Symptom: In aligning the IF Amp on K2 #5091, I am not hearing any signal
strength variation when adjusting L34 per the instructions on pg. 62. The
weak signal near 7000 khz is relatively loud but moving the slug doesn't
result in any variation that I can hear. I can
Symptom: In aligning the IF Amp on K2 #5091, I am not hearing any signal
strength variation when adjusting L34 per the instructions on pg. 62. The
weak signal near 7000 khz is relatively loud but moving the slug doesn't
result in any variation that I can hear. I can peak signals with L1 and L2
Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Vic K2VCO
Sent: Thursday, November 24, 2005 9:14 AM
To: [EMAIL PROTECTED]
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K2 IF Alignment question
[EMAIL PROTECTED] wrote:
Happy Turkey Day to all,
Symptom: In aligning
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