Hi Lyle,
You might try adding an attenuator between the K3 IF out and the LP-PAN
IF in and see if the overloading disappears. If so, it might indicate
the LP-PAN system is overloading rather than the K3.
73,
Lyle KK7P
PS - The K3 blocking dynamic range is 20 to 30 dB better than PC-based
And the rogue mixer could be our old friends Rusty Bolt, Anode and Cathode.
David
G3UNA
Of course, the device or transmitter generating this signal at 6980.36 kHz
might in fact be operating at a sub-harmonic frequency e.g. a MF BC station,
*and the rogue mixer itself is generating the
Yes indeed as both you and Joe, W4TV, have suggested before. Nickel plated
coax connectors can create similar problems.
Geoff
GM4ESD
David G3UNA wrote on Tuesday, June 16, 2009 at 3:19 PM
And the rogue mixer could be our old friends Rusty Bolt, Anode and
Cathode.
David
G3UNA
Of
Hi All,
I was just wondering about the 40 m and started to listen to the AM
broadcasts.
I also found the nasty noises, but when I checked on the LP-Pan, I found the
signal was ok.
Of course, when I turned off the noise blanker it went away.
Yet another senior moment.
73
Tim gm4lmh
Tim Heasman wrote:
Of course, when I turned off the noise blanker it went away.
In many cases you can use the DSP noise blanker instead of the IF
blanker. The DSP blanker has the advantage of the narrow crystal filter
ahead of it, and in many cases this will eliminate wideband intermod.
Or
Further to Joe's suggestion: I've heard of a strong local signal being
rectified in rusty guttering giving problems to a beam in just one
direction. Took years to find that one.
Reminds me of something which happened many years ago here in Southern
Germany.
The interference monitoring and
Hi Steve. Apparently there has been a problem with the messages to me from
the LP-PAN Yahoo Group, so this digest is the first I am aware of your post.
Sorry about that. I think it has been resolved now.
It sounds like you may have to check your gain setting in LP-PAN, as well as
the input level
A photo (40 meter Overload) has been uploaded to the file section of the
LP-PAN Yahoo Group. This photo is a screen capture from PowerSDR-IF showing
WYFR at 6985Khz and the resulting images on either side of the carrier. The
K3's preamp was off. Turning on ATTN reduces the levels somewhat but
1. Is it normal to expect the K3's front end to overload under these
conditions?
Are you sure the K3 front end is overloading and not the LP-PAN system
(QSD, attached soundcard)? Are you experiencing symptoms that suggest
reh K3 front end is overloading other than the LP-PAN display (which
: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Steve Ellington
Sent: Sunday, June 14, 2009 8:32 PM
To: Elecraft@mailman.qth.net; lp-...@yahoogroups.com
Subject: [Elecraft] K3 Overload from WYFR
A photo (40 meter Overload) has been uploaded to the file
You are using a doublet and tuner: to what frequency is the tuner tuned? Do
you get the same response if the tuner is set differently?
Further to Joe's suggestion: I've heard of a strong local signal being
rectified in rusty guttering giving problems to a beam in just one
direction. Took
11 matches
Mail list logo
