14.2 vdc is the power supply's output at its terminals...it then goes thru a
blocking diode with about 6/10th vdc drop at the batteries.
----- Original Message -----
From: "Carl Moreschi" <n4py@earthlink.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Wednesday, April 20, 2005 4:46 AM
Subject: Re: [TenTec] Omni VI and power supply occilation???
> The Paragon, Paragon II, , Omni V, Omni VI, Jupiter, and Orion all have a
> circuit that reduces drive if the current in the finals goes above a
> threshold. This circuit not in the original Omni A, Omni D series. It
> may
> be that the setting for this threshold is too high on Denton's radio.
>
> I am also sheptical of the power supply output voltage being 14.2 volts.
> I
> think the maximum should be 13.8 volts.
>
> Carl Moreschi N4PY
> Franklinton, NC
> ----- Original Message -----
> From: "Vic Klein" <vhklein@ptd.net>
> To: <tentec@contesting.com>
> Sent: Wednesday, April 20, 2005 7:05 AM
> Subject: Re: [TenTec] Omni VI and power supply occilation???
>
>
>> > ----- Original Message -----
>> > From: denton
>> > To: Discussion of Ten-Tec Equipment
>> > Sent: Saturday, April 09, 2005 11:14
>> Not sure about the "oscillation" thing in the power supply, but Ten Tec
>> radios do not fold power back under high-SWR conditions and depend on the
>> Ten Tec power supply's ability to limit current supplied to the radio in
>> order to protect the finals. There may be an oscillation happening in the
>> radio that is causing it to to draw excessive current and since your
> supply
>> is not limited, that may be affecting the finals. Ten Tec used to sell an
>> outboard circuit breaker for "foreign" supplies that went between the rig
>> and supply to provide the same protection. I'd suggest getting that or an
>> equivalent in your setup.
>>
>> =Vic=
>> WA4THR
>>
>> > Subject: [TenTec] Omni VI and power supply occilation???
>> >
>> >
>> > I recently purchased a used Omni VI that quit transmitting, sent it in
> to
>> > TT
>> > for repair and alingment. TT replaced the finals and some other
>> > work...
>> > I recieved the repaired Omni yesterday and wasted no time getting back
> on
>> > the air.
>> > This morning....no rf out AGAIN!!! Exact same sympthons as before.
>> > I made a call to the TT repair department, and they said since I run a
>> > homebrew power supply, I may have an ocillation from the power supply
>> > that
>> > is destroying the finals in the Omni.
>> > What ocillation??
>> > I have used this power supply for years. It is currently feeding an FT
>> > 990
>> > and uhf/vhf radio without problems. The power supply has fed various
>> > TT
>> > hf
>> > rigs thru the years without problem. Is there something unique about
>> > an
>> > Omni
>> > that will not allow it to be used in my station on the existing power
>> > supply??
>> > The power supply is currently hooked up to a pair of absorption mat
> deep
>> > cycle batteries with a blocking diode between the B+ and the
>> > batteries.
>> > It
>> > has been used this way for quite some time without problem, and the
> power
>> > supply alone is capable of 35 amps continous all day long.
>> > TT also tried to tell me this morning that I may have to run the Omni,
>> > when
>> > it gets back from being repaired a second time, on a separate power
>> > supply
>> > that will shut down when it detects ocillation.
>> > Anyone run across this before...thanks....
>>
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>
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>
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