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Old 03-12-2014, 07:09 PM   #1
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Ham Radio and RVing

I have been a ham for many years and also enjoy listening to shortwave and AM broadcasts. In our last camper, an R-Vision travel trailer, the power converter made so much electrical noise that it would cover up most AM and shortwave signals when I was listening of an evening.

We just bought a Rockwood 8285IKWS (picking it up tomorrow) and am anxious to see if the power converter will be noisy in the RF range. Do any hams or SWLs have any experience with Rockwood and how they do with radio signals? Has anyone tried any filters or anything to suppress the RF noise?
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Old 03-13-2014, 12:56 AM   #2
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Every camper we've ever owned has had that problem. The switch mode power supplies used in the converters are just noisy and have virtually no shielding. Even if the converter were shielded, I'm afraid every inch of 12V wiring is an antenna for the power supply hash.

Add to that the fact that every other camper in the RV park is generating there own RFI and you have a situation where broadcast band and at least every thing below 20 meters will be useless. Even when I go off park power and use just battery power the RFI is still 20db over S9 in most parks!
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Old 03-13-2014, 01:20 AM   #3
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I do battery powered swl and have had good success for short periods of time by simply throwing the breaker to the converter. Not a real breakthrough I admit.
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Old 03-13-2014, 01:46 AM   #4
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Guy's I have to agree, I've tried all types of filters,
but even when I thought I had thngs in hand
we would go to a camp ground and I might as well
turned the radio off.

I have drilled and taped a 3/8 treaded hole in the
bumper this winter and then ran a ground strap
1 inch wide into the coach.... I have a 4ft ground
rod that I use for the generator that I drive in the
ground when dry camping. So this year I'm going
to try putting in one from the bumper and see if
that helps when we are use shore power at a
camp grounds.

So rburns4147 please let us know how things
turn out, hope to here you on the air

73
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Old 03-13-2014, 09:17 AM   #5
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Old 03-13-2014, 02:22 PM   #6
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Sent him a message, we will see what happens

tnxs 73
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Old 06-10-2014, 11:53 AM   #7
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I have a Ham radio, but It's in my TV. The DW doesn't mind my hobby, she just doesn't like listening to it. I am still able to enjoy the hobby in my pickup. My pickup is and has always been my Ham shack. 10,12 meters,2m,440/70cm,11m cb, and ssb.
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Old 06-10-2014, 02:52 PM   #8
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Update on the electrical noise from the converter...It is just as bad with the new 5th wheel as it was with the old travel trailer. I do like Simchasabre suggested and turn the converter off once in a while when I want to listen to AM or short wave.

I have mounted a dual band antenna for my 2M/440 HT on the ladder and it seems to work fine. I used a trucker's mirror mount with a screw on connector so I can take the cable off when traveling. So far, it works pretty well.
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Old 06-10-2014, 03:13 PM   #9
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I would think you could turn off the converter for several hours without any real drain. After all the boondockers in the world run for days on battery. And you will still have the 110 volt shore power running the big stuff. Although the 110 electrical appliances can still drum up plenty of RF.
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Old 06-14-2014, 07:10 PM   #10
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I just turn the inverter off.

I use an Astron 35M power supply. Heavy, takes up space, but seems quiet. And someone gave it to me so the price was right.

If dry camping I'll take a group 27 marine battery. If it needs charging I'll jump it with the truck.
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