Great video Fred and a good point as well. On switch mode P/S designed for radio equipment they usually allow you to tweak the switching frequency which lets you tune the interference out, otherwise a additional LC network filtering can help too. I just don’t know why they don’t build those features into the PS in the first place, it cant cost that much. Joel, N6ALT
I think these PSU's are really bench supplies Joel. When i bought this one about 3 years back it said it was ok for radio but it really is not. Thanks for the input. 73
Remember getting my A**E whacked when mother saw the shriveled up ubiquitous vinyl flooring next to the battery. The good old days Fred lol. Hope the family is well. 4 legs and 2 legs.Thanks again Fred
I would say aim for a 10 amp supply. If you think that you may stick the hobbie it might be worth investing in a 30 amp straight away for the future. If you UK based have a look at Knights CB. Those were the white supplies i showed in the video.
Good video Fred, as bad as it is for the 11m band, it's good to see it doesn't appear to wipe out the lower ham and shortwave bands. I wonder if it's worth testing the same frequencies using a handheld radio/scanner to see if the noise is mains distributed or as more likely via the airwaves? If its via airwaves, rather than not using it for radio, perhaps move it away from the radio to another part of the house and see if the noise is as bad? Perhaps putting it inside a bigger metal casing would reduce the stray RF emitted?
fredintheshed1 thats the only downside to cheap psu's, noise reduction parts cost pennies, but mass production would increase costs massively. This video will certainly help the new folks to radio as noise like this would put them off radio altogether.
Thanks Fred for taking the time to inform the rest of us. 2ao697 73's from across the pond. :)
Pleasure buddy :-)
Hi Fred
Thanks for the advice . Power supplies can make or break your station.
Great job !
Regards
Super Dave 61
Thanks David.
Great video Fred and a good point as well. On switch mode P/S designed for radio equipment they usually allow you to tweak the switching frequency which lets you tune the interference out, otherwise a additional LC network filtering can help too. I just don’t know why they don’t build those features into the PS in the first place, it cant cost that much. Joel, N6ALT
I think these PSU's are really bench supplies Joel. When i bought this one about 3 years back it said it was ok for radio but it really is not. Thanks for the input. 73
Sounds like the good old battery charger days Fred lol. As for the fan on the PS, it sounds like a hoover. Good video as usual, thanks Fred take care.
Hi Roy. Guess i was not the only one that used his dads battery charger as a CB PSU. I still rem the hum over transmit lol.
Remember getting my A**E whacked when mother saw the shriveled up ubiquitous vinyl flooring next to the battery. The good old days Fred lol. Hope the family is well. 4 legs and 2 legs.Thanks again Fred
great video and very good advice Fred
Fred, what power supply should I get for the 6900n? I'm thinking of getting back into cbs after 20 years of absence. Thanks for the videos man
I would say aim for a 10 amp supply. If you think that you may stick the hobbie it might be worth investing in a 30 amp straight away for the future. If you UK based have a look at Knights CB. Those were the white supplies i showed in the video.
Good video Fred, as bad as it is for the 11m band, it's good to see it doesn't appear to wipe out the lower ham and shortwave bands.
I wonder if it's worth testing the same frequencies using a handheld radio/scanner to see if the noise is mains distributed or as more likely via the airwaves?
If its via airwaves, rather than not using it for radio, perhaps move it away from the radio to another part of the house and see if the noise is as bad? Perhaps putting it inside a bigger metal casing would reduce the stray RF emitted?
Yes i thing a metal housing would help. I first noticed it on the Grant 2 where it knocked out all S2 signals on SSB. Not recommended this one.
fredintheshed1 thats the only downside to cheap psu's, noise reduction parts cost pennies, but mass production would increase costs massively. This video will certainly help the new folks to radio as noise like this would put them off radio altogether.
I agree the last thing you want to do is add noise to your set up esp if your homebased.
Old Computer PSUs are a cheap alternative to those on a budget and they are very RF friendly...Don't let all the wires put you off using them.
Yes well said. PC supplies can be a good supply as long as you work out the wiring. I think it was yellow for 12 volts.
I hope your not growing weed up in that loft :D
LOL it did look a bit like that with the blue lights LOL
Do ferrite clamps help reduce noise from psu?
No not on this one its way rough.
Just stick with a 30 or 50 amp linear psu & you'll have hassle free radio for years.
nowt wrong with yer mitts mate.
Cheers fella
buy cheap buy twice.
Yes afraid so.
this psu is ment for rc use !!!