Tom,
If you ever start to miss that hum, you might put the supply on top of an
empty paint can, which would act as an acoustic amplifier.
Steve
----- Original Message -----
From: "T Behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, December 27, 2007 21:15
Subject: Re: using TS480 with 35-amp Samlex switching power supply
> Steve and all:
>
> Well, I tried transmitting on various power levels, including 5 watts, and
> the hum was still there, although it was somewhat less noticeable on 5
> watts. I also tried farther separating the power supply from the radio,
> and
> plugging the power supply into another outlet, but the hum still
> persisted.
> Again, the hum is not unbearable--it's just noticeable if you listen
> closely
> when the rig is keyed.
>
> I'm starting to conclude that this is all normal for this type of power
> supply. So, I tried the ultimate "low tech" solution of them all; I put
> the supply on a computer mouse pad on my ham desk, and the noise almost
> became unnoticeable. So, I think I'm just going to leave it that way for
> now.
>
> If the supply or radio ran hot, I'd re-think my strategy, but so far,
> things
> run very very cool.
>
> 73 from Tom Behler: KB8TYJ
>
>
> ----- Original Message -----
> From: "Steve Forst" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, December 26, 2007 10:31 PM
> Subject: Re: using TS480 with 35-amp Samlex switching power supply
>
>
>> Tom,
>>
>> I don't have one of these, so can't comment on if it's normal or not.
>> If
>> it's not normal for this supply, perhaps you are getting some RF into
>> it
>> through the ac line cord. If you feel like playing, try reducing power
>> and
>> see what happens, try seperating the rig and supply as far as possible,
>> or
>> perhaps a different outlet to see what happens.
>>
>>
>> Or maybe someone will tellyou it is normal for this supply and you can
>> just
>> enjoy your new toys.
>>
>> 73, Steve
>
>
>
>
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