[Repeater-Builder] Re: That horrible noise: SOLVED

2006-05-02 Thread Dave VanHorn
Well, in the end, it turned out to be the IOTA power converter. This is something that didn't show up in extensive testing here, and didn't show up at the site for a while either. With modern SMPS designs, you can't really use the term switching frequency, since the controllers do things like

[Repeater-Builder] Re: That horrible noise: SOLVED

2006-05-02 Thread Dave VanHorn
--- In Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED] wrote: At 5/2/2006 06:56, you wrote: Well, in the end, it turned out to be the IOTA power converter. :-(#) I thought you said you tried shutting down the switching supply. Yes, there may be another switcher close by. There is a

Re: [Repeater-Builder] Re: That horrible noise: SOLVED

2006-05-02 Thread DCFluX
The time has come for everybody to clean up their own back yard. I hear those Iota's make for pretty good target practice with 000 buck shot. On 5/2/06, Dave VanHorn [EMAIL PROTECTED] wrote: --- In Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED] wrote: At 5/2/2006 06:56, you wrote:

Re: [Repeater-Builder] Re: That horrible noise: SOLVED

2006-05-02 Thread Bob M.
I have a similar problem with a battery charger inside the transfer switch cabinet for my backup generator. It's a switcher. The outputs run through 30 ft of #14 wire in plastic conduit out to the generator. I could hear the signal every 101 kHz starting at 404 kHz and running up to over 5 MHz. An