Dave,
Yes that is exactly what it appears to be doing. My frequency counter
is showing RF at 153.600 MHz regardless of what part of the band it is
tuned to. I removed the K144XV Reference Lock Board and there was no
change. Is there anything that can be done to correct this, or do I
need to send it back to Elecraft? I just bought it 2 months ago so it
shouldn't be an early production run board.
Thanks,
Mike KI0HA
On 5/17/2013 6:50 PM, WW2R Elecraft wrote:
Both my early edition K144XV were not unconditionally stable and were swr
intolerant
I think you will find that the 3:1 swr is because it is oscillating "out of
band". Try listening on a scanner. I have experienced this on my two k144xv
and g4ddk had the same issue with his. One example produced 162MHz, one
168MHz one around 158MHz. When you tune or speak it stabilizes and generates
on 2m My k144xv were fine if I operated at the bottom end of 2m where the
swr was 1.1:1 but my antenna swr rose to 1.6:1 at around 144.8MHz and above
this point it showed the instability you mentioned
Mine were replaced with the later production run k144xv (the one without the
centre spacer, but that could just be coincidence!) and the issue has not
arisen since
Dave
G4FRE
Message: 19
Date: Fri, 17 May 2013 05:26:24 -0500
From: Michael Eberle <mtebe...@mchsi.com>
To: Elecraft@mailman.qth.net
Subject: [Elecraft] K144XV Strange Readings
Message-ID: <519605d0.20...@mchsi.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I've noticed strange behavior on both the W2 watt meter and a
cross-needle meter when using my K3 on 2 meters. Just curious if anyone
has had problems like this? In SSB mode, keying the mic without any
audio causes the watt meter to show about 3 watts output power and 3:1
SWR. However If I hold the TUNE button and put out a carrier It shows
the expected 7-10 Watts forward with normal low SWR. It also appears to
show normal readings while speaking into the mic, but goes to the
unusual readings with in between audio peaks.
Thanks
Mike KI0HA
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