Alan Bloom wrote:
The paint must also be removed from the sheet metal around each of the
points where it attaches to the 2D fasteners.
My recent P3 metalwork had much more paint underneath the spray masking
tape than the 3-y-o K3 had. It needed a vicious stainless steel scratch
pen to clean
Guys,
My P3 has developed a problem that appears to be some internally generated
noise that shows up on the screen but doesn't come from the K3. Below is a link
to a video I made this morning for a visual description of the problem. After
the P3 has warmed up it will disappear. It will
@mailman.qth.net
Sent: Tuesday, May 03, 2011 10:26 AM
Subject: [Elecraft] P3 - Appearent P3 Anomoly
Guys,
My P3 has developed a problem that appears to be some internally generated
noise that shows up on the screen but doesn't come from the K3. Below is a
link to a video I made this morning
When you placed your hand on the P3, you changed its miscellaneous
chassis resonance when floating. Try grounding the P3 and see if it
goes away. Sources? That looks most like a switching power supply or
something from a monitor.
Also check to see if the cover itself is somehow (by the paint)
I've occasionally had a noise problem with the K3 and P3 combination
that was solved by un-connecting and then re-connecting the coax signal
cable between the K3 and P3 at the P3 end of the cable. The symptom was
noises that tracked the K3 tuning but were not on the K3 transmit frequency.
73,
Hi Don,
The first thing I would check is the ground connections in the chassis.
Make sure that the paint has been removed from the sheet metal on the
inside surface around the BNC and the RS-232 connectors. The mounting
nuts on the BNC connectors and the jack screws on the RS-232 connectors
must
6 matches
Mail list logo
