Carefully consider expanding into switchers. The designs are quite varied. To repair them you really need a good high frequency scope, shielded isolation transformer, 0.18 ohm 1000 watt resistor load, and most of all a good schematic. Switcher parts are hard to find especially the low ESR capacitors (a common failure). Fixing an analog supply is a slam dunk compared to a switcher. I would not put one at a repeater site unless the site happens to be my home.
Gran K6RIF
At 16:49 7/17/2005, you wrote:
Does anybody have a web site to look at IOTA power supply? I need to find
some to replace my power supplies in the future. Bruce KD4BOH.-----
Original Message -----
From: "Joe Montierth" <[EMAIL PROTECTED]>
To: <Repeater-Builder@yahoogroups.com>
Sent: Wednesday, May 25, 2005 2:22 PM
Subject: Re: [Repeater-Builder] IOTA Switched Power Supply and Noise?
>I have one of the 75 amp supplies working at a remote
> site. We have not seen any noise from the unit, but
> our equipment is all VHF and UHF, haven't checked it
> down in HF, but at UHF we have seen no problems. We
> have 20 UHF RX's and 6 VHF and have not seen any
> degradation.
>
> These IOTA's run much cooler than the analog Astron's,
> and are much smaller. I will probably be changing out
> all of the Astrons to these in the next few years, as
> conditions warrant.
>
> Joe
>
> --- Nick Papadonis <[EMAIL PROTECTED]> wrote:
>> Hi Folks,
>>
>> I'm considering purchasing a 45A IOTA Switched Power
>> supply to power a UHF Micor and am concerned about
>> switch PS noise.
>>
>> Has anyone tried these supplies with UHF radios? Is
>> noise experienced?
>>
>> Insight greatly appreciated. Thanks.
>>
>> --
>> Nick KB1GZN Boston, MA
>>
>>
>>
>>
>
>
>
>
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