[TenTec] Orion power cord

[Robert & Linda McGraw K4TAX]

In many cases where a longer than normal (what ever that is) cordage is 
used, often a second set of smaller conductors will be found to provide a 
sensing voltage back to the power supply.  Via than means the voltage 
reference is actually measured at the load end of the cord and adjusted 
accordingly by the fast response of the power supply regulator.  Of course, 
one must have a power supply with the capability of remote voltage sensing. 
Many do, except they are jumpered inside or one the output terminal strip.

As to the ORION cord, it is just fine for the length provided.

73
Bob, K4TAX


----- Original Message ----- 
From: "Grant Youngman" <nq5t at comcast.net>
To: "'Discussion of Ten-Tec Equipment'" <tentec at contesting.com>
Sent: Tuesday, May 24, 2005 7:23 AM
Subject: Re: [TenTec] Orion power cord


>> The supplied power cord for the Orion seems kinda wimpy to
>> me.  Has anyone changed to a larger wire and noticed any difference?
>
> If your power lead is SHORT and/or you see no contrast change on the 
> screen
> when you key down at full power it's probably ok.  If you have a longer 
> run
> to the power supply use the spare connector and make up a new cable.  I
> managed to squeeze a #10 cable into the connector pins.
>
> I actually go a step further, and transition a short #10 tail out of the
> radio to a #6 run to my power source.  The reason is that I have a longer
> cable run (8') and it goes to a DC battery backup system.   A few tenths 
> of
> a volt saved in cable losses adds up to more operating time out of the
> backup system when the lights are out.  The difference is significant. 
> The
> drop through an 8' piece of #14 wire at 25 amps is about 1.2 volt. 
> Through
> the same run sized at #6 it's only about .2 volts.
>
> Grant/NQ5T
>
>
>
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