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PGXL power supply RFI noise
James Eastham Jr
Member ✭✭
I'm notice an significant amount of power supply RFI coming from my PGXL on several bands. The worst spikes are measuring about 10khz wide at a peak of S4 about every 50 khz across 20 mtrs. 30mtrs and 10 meters also affected although not as severe as 20mtrs. Anyone else noticing RFI noise from the amp? Solutions?
Jim
NX3Z
Jim
NX3Z
0
Comments
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None here on any band. What happens when you connect a dummy load? 73 Mack W4AX0
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I had a switching that suddenly failed in regards RFI. One of the filters in the PS failed. Don’t know if it was the mains filter or the harmonic filter in the converter part, but it caused much noise in the sub 1 MHz and lots of spikes above. So maybe the failure is similar to your problem. All it takes is a capacitor to go bad and still have the voltages still be correct. You might want to consult with FRS customer support.0
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I saw RFI on 6M probably b/c my 6M antenna is closer to the shack than my HF antenna.
The interference emanates from the Ethernet cable. Perhaps the length of the cable may effect certain bands more than others.
Elimination was effected by coiling up several turns of the Ethernet cable [at the amps RJ45 connector] and install small snap-on ferrites around the coil. Hope this helps.
Bill W2PKY0 -
Added the DX Engineering Ethernet RFI Filters to Clean up everything Mike0
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Put a toroid on the RG8 between the PGXL and my HF Auto Tuner and that knocked the RFI down quite a bit. Another one will probably clean it up entirely. Thanks for the replys.
Jim NX3Z0
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