I was looking at an ad in the new Texas Towers circular about a brand of power supply that I have not heard of..it was not Fischer-Price but something like Jetblue or JETSTREAM. These claim to be fully filtered and RFI friendly. Anyone ever try one of these? They have models up to 45 amps and look to be cheaper than the ASTRON supplies and also have adjustable voltage and amperage. - Mike
From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of George Henry Sent: Sunday, August 03, 2008 2:28 PM To: [email protected] Subject: Re: [Repeater-Builder] Power Supply from a PC. Slightly OT There was an article in QST a couple of years ago on doing this very thing. The major caveat is that the power supply MUST see a load at all times, in order to maintain regulation. Noise can definitely be an issue, but each manufacturer's supply is likely to be different from the next, with respect to frequencies and strength of any interference. Only way to know for sure is to play around. You might try substituting shielded leads for the bundle of 18-ga. wires that they all come with. That should at least help with radiated noise. 73, George, KA3HSW / WQGJ413 ----- Original Message ----- From: "Gmail - Kevin, Natalia, Stacey & Rochelle" <[EMAIL PROTECTED] <mailto:sparcnz%40gmail.com> > To: <[email protected] <mailto:Repeater-Builder%40yahoogroups.com> > Sent: Sunday, August 03, 2008 11:04 AM Subject: [Repeater-Builder] Power Supply from a PC. Slightly OT Hi All, This request is slightly OT but still for Amateur and possible Repeater use. I read an artical about using a PC power supply as a 12 and 5 volt/ high amp atable power supply for the bench. Looking over the specs it looks good for 12v at 19A and 5v at over 30A. Was interested and due to the size of the PC power supply takes up a lot less room on the bench then my standard Ham power unit. Before I go and use one of these (Have a couple of spares), I would like to know if anyone has already tried this, and if so what problems has it caused? Being a switch-mode is it very nosiey on HF or even the upper bands? Thanks Kevin. __________ NOD32 3301 (20080727) Information __________ This message was checked by NOD32 antivirus system. http://www.eset.com
