Could be diode switching noise radiating from the power supply. Certainly
worth checking into.
Bob, K4TAX
----- Original Message -----
From: "JT Croteau" <jt.w6fo@gmail.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Friday, January 20, 2006 2:00 PM
Subject: Re: [TenTec] Paragon Problem
> Thanks for the reply Jim.
>
> In one of my tests last night, I turned off all circuit breakers in
> the house except the one powering the rig's power supply and the
> problem remained. I have been suspecting the power supply since day
> one and I will probably pull the battery out of my car tonight to test
> this theory. Nothing has been added to my house or neighborhood since
> I was last on the air that would make this kind of noise. The noise
> does go away when the antenna is removed.
>
> I was finally able to tune in WWV this morning but it wasn't as good
> as it usually is.
>
> The power supply is a 25A TrippLite unit and I don't recall off the
> top of my head if it's a switcher or not.. it may very well be.
>
> - JT
>
> On 1/20/06, James C. Owen, III <k4cgy_list@yahoo.com> wrote:
>> It sounds to me like the noise you're hearing is externally
>> generated. IE when you turn on the ATT the noise drops. The ATT
>> is almost the first thing that the signal sees and if it's
>> working the rest of the rig is working. Does the noise go away
>> when the antenna is removed? I would think it would since the ATT
>> drops it.
>> What power supply are you using? Is it a switcher? Have you added
>> any battery chargers since your previous rig? I had a battery
>> charger that I used in the basement and it drove me batts for a
>> couple of weeks until I figured out that the switcher in it was
>> causing the problem.
>> The Paragon I belive tunes the broadcast band. The signals there
>> should be well above the S7 noise level. See if you can pick up
>> signals between 530Khz and 1700 Khz.
>> 73 Jim K4CGY
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