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Old 06-08-2018, 04:40 PM   #1
Wa2yly
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Location: Hawley pa
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Default Converter ac noise

Hi all
My new apex 26ft trailer converter is generating lots of noise.Just with trailer plugged in at house,It generates noise on my hf receiver in my hamshack.
Today i hooked up oscilloscope and my old ts440 txc in trailer.I monitored ac line on scope and get lots of noise when transmitting.without tx,the noise level in rcvr is s-8.I guess i need some good ac line filters to get rid of this noise.
Has anyone else had this problem?
Bob
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Old 06-11-2018, 09:55 PM   #2
Radio
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Welcome aboard.

I haven't had any noise issues from the converter. Had one LED light that spewed some junk but it failed in short order. Are you running the rig off coach 12 VDC? I usually run my Kenwood TS570 off either a car battery or an Astron M35 power supply. No noise problems.

I have at one time or another on my ham radio career put ferrite chunks on just about everything.
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Old 06-12-2018, 08:44 AM   #3
Wa2yly
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Doesnt make any difference if i connect directly to battery.this thursday i have a friend coming over with a few emi filters and isolation transformer.will see if they help.
Bob
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Old 08-01-2018, 10:01 AM   #4
N3LYT
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I have a progressive charger/converter that replaced the old liniar supply it's dead quiet I basically use it as my DC supply for the radio when plugged in depending on battery charge somewhere between 13.2 13.8 volts @ 40 amp possible output. Broad voltage range LED's make a lot of noise! I bought some very nice flush mount LED fixtures (5 to 30 volt) they totally wiped out my FM radio, complete desince! I had to remove the switching supplies and run them with a 10 volt regulator.
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Old 08-02-2018, 08:17 AM   #5
Wa2yly
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Default Noisy battery charger

My converter and battery charger were on the same 110v breaker.I installed another 110v breaker.now when im on the radio,i shutoff 110v breaker,for battery charger.
Noise is almost gone when using external 12v supply for radio.If I connect directly to 12v battery with 110v breaker shutoff the noise charger.At least i have a work around.Of course i can purchase a better battery charger.But im ok for now.
73 all bob
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Old 10-29-2018, 03:18 AM   #6
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Look at putting a big ferrite core or two on the charger output cable. Won't cost much and might be all you need.
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