Re: [TenTec] [orion565] Astron Power Supplies

["Richard Detweiler" <rdetweil@hotmail.com>]

I beleive Astron allows the use of two units to get 24 volts,  so the 
negative needs to be isolated.  I don't think it's hard to bring it to 
ground,  and it will help in some RFI siturations.
Generally there is no problem with the Astron Supply, however,   in a high a 
current situation, ( antenna badly mis-tuned)  the current the final 
transistors will draw is not enough to trip the Astron over-current 
protection, but is enough to burn the finals out.
I recommend using the 963 supply with the Orion,  as it will shut down 
faster than any fuse or airpax on the DC line when the over current happens 
and save your finals.
Best wishes,
rich
K5SF

> From: "Chuck Frame" <n6psn@comcast.net>
> Reply-To: orion565@yahoogroups.com
> To: <orion565@yahoogroups.com>,"'Discussion of Ten-Tec Equipment'" 
> <tentec@contesting.com>
> Subject: Re: [orion565] Astron Power Supplies
> Date: Mon, 4 Dec 2006 15:50:53 -0800
>
> I am using a stock Astron 35m with the Orion. No problems here.
> N6PSN Chuck
> ----- Original Message -----
> From: "Larry Menzel" <retire@means.net>
> To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>;
> <orion565@yahoogroups.com>
> Sent: Monday, December 04, 2006 3:08 PM
> Subject: [orion565] Astron Power Supplies
>
>
> Hey, guys,
>
> I've been using a 35amp Astron supplies in my shack.  I have been running 
> my
> Orion off it since I got them, and with no problems.
>
> It crapped out the other day, and I believe I read or heard someone say 
> that
> the negative post should be grounded to the case of the supply. The one I
> have been using does NOT.
>
> Well I just got a replacement supply, and I opened the case, and I can see
> that indeed, the negative post is isolated with insulators on both sides of
> the negative post.  Do I recall Paul Clinton telling me that the post 
> should
> be connected to the case?
>
> Number one, if so, why doesn't Astron do that to begin with?  And second
> question, will it do any harm to do so?
>
> Your opinions would be much appreciated before I put this one into service.
>
> TIA.
>
>
> Larry, N0XB
> Northfield, MN
>
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