Hi Don,
I do have the SVGA option installed but do not remember upgrading the K3
for 1 amp. Not sure how I missed that upgrade. So in a few weeks will be
opening up my K3 to check that and if not there putting in the upgrade.
Thanks for your advice.
73, tom w7sua
On 10/28/2019 9:10 PM, Don Wilhelm wrote:
Tom,
If you have not yet made the K3 switch to the 1 amp output, that alone
could explain the problem, especially if you have the SVGA option in
your P3. The 0.5 amp source is marginal in the P3 without any options.
73,
Don W3FPR
On 10/28/2019 11:17 PM, Tom Azlin W7SUA wrote:
Thanks Don.
I measured the power supply sag at the power supply to be about 0.05
volts. Replaced the cables with larger gauge and still had a problem,
perhaps internal to the K3. Switched to feeding the P3 directly from
the power supply ( an Astron 70, but switch to Alinco 50 amp with same
results) and now the P3 is rock solid. I did order the K3 mod to raise
the current limit from 0.5 to 1 amp as suggested by Elecraft. And will
be making that Aux DC out to P3 cable of heaver gauge.
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