[TenTec] Jupiter & Pegasus CW note

[Steve Ellington]

Power supplies have nothing to do with this problem Carl. It's the noisy
70mhz first oscillator. This has been proven many times over although power
supplies can cause other problems with RF feedback etc.

Steve Ellington
N4LQ
-----Original Message-----
From: Carl Moreschi <n4py@earthlink.net>
To: tentec <tentec@contesting.com>
Date: Sunday, March 04, 2001 12:03 PM
Subject: Re: [TenTec] Jupiter & Pegasus CW note


>
>I just have to say that it is a known problem that if the pegasus or
jupiter
>is too close to the power supply, a 60 hertz component gets modulated on
>the CW carrier producing a raspy CW note.  You must keep the power
>supply at least 2 feet from the transceiver.  The problem is not RF getting
>into the transceiver, it is caused by the magnetic lines of force from the
>power
>supply transformer modulating the oscillators in the transceiver.
>
>I have had several hams listen to my pegasus CW note and all say it
>sounds great.
>
>I wonder if the ARRL test had the power supply near the pegasus.
>
>Carl Moreschi  N4PY
>Franklinton, North Carolina
>n4py@earthlink.net
>----- Original Message -----
>From: "David McClafferty" <at060@chebucto.ns.ca>
>To: "Paul Christensen" <paulc@mediaone.net>
>Cc: "Tentec Users Reflector" <tentec@contesting.com>
>Sent: Sunday, March 04, 2001 4:53 PM
>Subject: Re: [TenTec] Jupiter & Pegasus CW note
>
>
>>
>>
>>
>> On Sat, 3 Mar 2001, Paul Christensen wrote:
>>
>> >
>> > It's unlikely you'll  see anything abnormal with an audio spectrum
>analyzer.
>> >
>> Sorry I should have said I was using an RF spectrum analyzer. It is a
>> homebrew analyzer that was described in QST some years back. I built it
up
>> from an A&A Engineering kit. BTW it is for sale along with a Tektronix
902
>> diplay unit (scope). A spare scope tube, two spare Jerrold TV converters
>> (used in the Spec. Analyzer) for $400.00 Canadian, if anyone is
>> interested.
>>
>> 73, Dave. VE1ADH
>>
>>
>>
>> --
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>>
>>
>
>
>--
>FAQ on WWW:               http://www.contesting.com/FAQ/tentec
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>Problems:                 owner-tentec@contesting.com
>
>


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